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Bibliography on: Invasive Ductal Carcinoma (causes)

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Robert J. Robbins is a biologist, an educator, a science administrator, a publisher, an information technologist, and an IT leader and manager who specializes in advancing biomedical knowledge and supporting education through the application of information technology. More About:  RJR | OUR TEAM | OUR SERVICES | THIS WEBSITE

RJR: Recommended Bibliography 23 Sep 2026 at 01:51 Created: 

Invasive Ductal Carcinoma (causes)

Invasive ductal carcinoma (IDC), also known as infiltrating ductal carcinoma, is cancer that began growing in a milk duct and has invaded the fibrous or fatty tissue of the breast outside of the duct. IDC is the most common form of breast cancer, representing 80 percent of all breast cancer diagnoses.

The causes of invasive ductal carcinoma have not been conclusively established. Researchers have determined that cancer can form when the cells in a milk-producing duct undergo changes that cause them to grow uncontrollably, divide very rapidly or remain viable longer than they should. The result is an accumulation of excess cells that can form a mass, or tumor, and potentially spread to nearby lymph nodes and distant areas of the body. The underlying reason for those cellular changes, however, remains unclear.

By evaluating the results of extensive studies, scientists have identified certain hormonal, environmental and lifestyle factors that are believed to influence a person's breast cancer risk, such as smoking, poor nutrition and prior radiation therapy administered to the chest area. Even so, it's important to keep in mind that some individuals who have no risk factors develop cancer, while others with one or more risk factors do not. Most likely, the precise cause is a complex interaction of many factors.

In rare cases, the causes of invasive ductal carcinoma have been traced to inherited attributes, such as mutations of the: (a) Breast cancer gene 1 (BRCA1), a tumor suppressor gene, (b) Breast cancer gene 2 (BRCA2), a tumor suppressor gene, or (c) ErbB2 gene, which produces the HER2 protein that promotes cellular proliferation.

Created with PubMed® Query: ( ("invasive ductal carcinoma" OR IDC) AND (cause OR caused OR etiology) ) NOT pmcbook NOT ispreviousversion

Citations The Papers (from PubMed®)

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RevDate: 2026-09-21
CmpDate: 2026-09-21

Gil-Lozano M, Simoes E, Wu M, et al (2026)

Combinatorial targeting of the miR-379/miR-410 cluster normalizes glucose and lipid homeostasis in male models of diabetes and obesity.

Nature communications, 17(1):.

Non-coding RNAs from the Dlk1-Dio3 locus are critical for the maturation of metabolic tissues in early stages of postnatal development; however, their role in the mature organs remains elusive. Herein, we show that microRNAs from the miR-379/miR-410 cluster are robustly upregulated in livers of subjects with obesity and various mouse models of metabolic dysfunction. Adult-onset, combinatorial inhibition of this miRNA cluster by hepatocyte-specific expression of a decoy sequence reduces triglyceride, total and LDL cholesterol circulating levels, decreases basal glycemia and improves glucose tolerance and insulin sensitivity irrespective of sex. Consistent with the decoy-triggered enhancement of PI3K/mTOR signaling in these mice, hepatocytes expressing the combinatorial decoy show augmented mitochondrial mass and function. Notably, decoy therapy also ameliorates glucose and lipid homeostasis in both type 1 diabetic and diet-induced, type 2 pre-diabetic, obese male animals. Collectively, our results demonstrate that microRNAs from the miR-379/miR-410 cluster are critical regulators of metabolic homeostasis in the mature liver. Given the preservation of miRNA dysfunction in human obesity, hepatocyte-specific combinatorial inhibition of a large miRNA cluster represents an approach towards multi-parameter improvements in diabetes and obesity.

RevDate: 2026-09-22
CmpDate: 2026-09-22

Sánchez-Corona Y, EE Quiñonez-Urrego (2026)

[Clinicopathological characteristics of human epidermal growth factor receptor-2 1+ cases in breast cancer].

Revista medica del Instituto Mexicano del Seguro Social, 64(5):e6875.

BACKGROUND: The expression of the HER2 oncogene has a specific prognostic and therapeutic objective in breast cancer care. Low gene expression, called HER2-low implies the possibility of being a candidate for targeted therapy. However, there is significant variability in its interpretation, hence the importance of emphasizing its proper identification and reporting.

OBJECTIVE: To estimate the proportion of cases confirmed as HER2 1+ among biopsies previously reported as HER2 1+, and to describe their clinicopathological characteristics, as well as the interobserver agreement in their classification.

MATERIALS AND METHODS: Observational, retrospective, and analytical study of cases previously diagnosed as HER2-negative score 1+, which were reviewed by 2 independent pathologists.

RESULTS: 351 cases were included, with a mean age of 59.56 years. The histological subtypes were invasive ductal carcinoma NOS (70.66%), histological grade 2 (56.92%), and SBR score 6 (41.82%), associated in 89.17% of cases with hormone receptor expression. There was agreement for the HER2-low diagnosis in 78.91% of cases, with a Cohen's kappa simple of 0.62, which is similar to some studies documented in the literature.

CONCLUSIONS: Agreement in the interpretation of HER2-low increases when it is performed by at least 2 pathologists; likewise, proper handling of surgical specimens in the pre-analytical phase is vital for optimal assessment, as this has a direct impact on current prognosis and treatment.

RevDate: 2026-09-21
CmpDate: 2026-09-21

Abunasser S, Al-Taweel R, Elnatsheh S, et al (2026)

Male breast cancer in Arab populations: a systematic review of molecular, genetic, and clinicopathologic characteristics.

Journal of the Egyptian National Cancer Institute, 38(1):.

BACKGROUND: Male breast cancer (MBC) accounts for less than 1% of all breast cancer cases, yet its incidence is increasing worldwide. Research on MBC remains limited, particularly in Arab populations, where molecular and genetic characteristics are poorly characterized. Improved understanding of MBC biology is essential to support region-specific, biology-driven management strategies.

METHODS: This systematic review was registered in PROSPERO (CRD42024607019) and conducted according to PRISMA guidelines. PubMed, Embase, and Scopus were searched from inception to 28 December 2025. Eligible studies reported MBC cases from Arab countries and included data on molecular subtypes, receptor status, genetic alterations, and/or clinicopathologic characteristics. Data were extracted independently by four reviewers. Risk of bias was assessed using the Joanna Briggs Institute (JBI) critical appraisal tool, and findings were synthesized narratively with harmonization of tumor grade and stage where applicable.

RESULTS: From 9,337 records, 54 studies comprising 1,534 MBC patients met the inclusion criteria. Invasive ductal carcinoma was the predominant histological subtype (92.6%). Among patients with reported intrinsic subtypes (n = 335), luminal A (45.7%) and luminal B (40.9%) accounted for over 86% of cases, whereas HER2-positive (4.8%) and triple-negative (8.4%) tumors were uncommon and triple-positive disease was rare (0.3%). Receptor status was reported for 1,031 patients, with high ER (71.5%) and PR (71.6%) positivity and low HER2 positivity (12.6%), alongside substantial heterogeneity in testing and reporting. Genetic data were available for 59 patients, most frequently identifying pathogenic truncating BRCA2 variants, although BRCA-negative cases were also reported. Surgery was the most reported treatment modality (n = 856), predominantly mastectomy-based, while endocrine therapy was frequently used and HER2-targeted therapy was infrequently reported.

CONCLUSION: MBC in Arab populations is predominantly hormone receptor-driven, characterized by luminal subtypes, high ER/PR positivity, and low HER2 expression. Genetic evidence, though limited, implicates BRCA2 as the most frequently reported susceptibility gene. These findings highlight the need for standardized molecular reporting and broader access to receptor profiling and genetic testing to support personalized, region-specific MBC management.

RevDate: 2021-11-24
CmpDate: 2021-11-24

Gupta V, Agarwal P, P Deshpande (2021)

Impact of RASSF1A gene methylation on clinico-pathological features of tumor and non-tumor tissue of breast cancer.

Annals of diagnostic pathology, 52:151722.

BACKGROUND: Breast cancer is the most common malignancy in women caused by genetic and epigenetic changes. Promoter DNA methylation in tumor suppressor gene plays a major role in breast cancer. The study determined the association of promoter DNA methylation of RASSF1A gene with clinicopathological features in tumor and non-tumor tissue.

MATERIALS AND METHODS: A cross sectional study was conducted in the Department of Pathology, Government Institute of Medical Sciences, Greater Noida and Molecular Pathology Laboratory, Department of Pathology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences. Two sections, one from tumor and the other from non-tumor tissue, were obtained and processed for DNA extraction and bisulphite conversion. Methylation specific PCR was done and results of RASSF1A promoter methylation were statistically correlated with clinicopathological features.

RESULTS: Of the 27 breast cancer tissue, 22 showed invasive ductal carcinoma, one showed invasive lobular carcinoma, another showed ductal carcinoma in situ and three cases showed malignant phyllodes tumor of breast. DNA promoter methylation was found in all the cases. 93% of tumor tissue samples and 67% of the non-tumor tissue samples were found to be aberrantly methylated. Tumor size and histological grade were found to be significantly (p-val <0.05) associated with the RASSF1A gene promoter methylation.

CONCLUSION: A significant association of higher tumor size and tumor histological grade with promoter methylation of RASSF1A gene exists suggestive of its being an important determinant of prognostic staging. This critical event in tumorigenesis may be of clinical utility in assessing breast cancer progression.

MICRO ABSTRACT: The study focuses on the RASSF1A gene promoter methylation and its impact on the clinicopathological features in Indian breast cancer patients highlighting the differences from other genetically different population. We found that RASFF1A gene methylation has significant impact on tumor size and tumor grade. The work carries high significance because it addresses the DNA methylation of tumor suppressor gene in relevance of breast cancer. It may also be the first such report on Indian patients with breast cancer.

RevDate: 2022-05-31
CmpDate: 2021-06-23

Chandrika M, Chua PJ, Muniasamy U, et al (2021)

Prognostic significance of phosphoglycerate dehydrogenase in breast cancer.

Breast cancer research and treatment, 186(3):655-665.

PURPOSE: Breast cancer is the most common type of cancer affecting women worldwide. Phosphoglycerate dehydrogenase (PHGDH) is an oxidoreductase in the serine biosynthesis pathway. Although it has been reported to affect growth of various tumors, its role in breast cancer is largely unknown. This study aimed to analyze the expression of PHGDH in breast cancer tissue samples and to determine if PHGDH regulates breast cancer cell proliferation.

METHODS: Tissue microarrays consisting of 305 cases of breast invasive ductal carcinoma were used for immunohistochemical evaluation of PHGDH expression. The role of PHGDH in breast cancer was investigated in vitro by knocking down its expression and determining the effect on cell proliferation and cell cycling, and in ovo by using a chorioallantoic membrane (CAM) assay.

RESULTS: Immunohistochemical examination showed that PHGDH is mainly localized in the cytoplasm of breast cancer cells and significantly associated with higher cancer grade, larger tumor size, increased PCNA expression, and lymph node positivity. Analysis of the GOBO dataset of 737 patients demonstrated that increased PHGDH expression was associated with poorer overall survival. Knockdown of PHGDH expression in breast cancer cells in vitro resulted in a decrease in cell proliferation, reduction in cells entering the S phase of the cell cycle, and downregulation of various cell cycle regulatory genes. The volume of breast tumor in an in ovo CAM assay was found to be smaller when PHGDH was silenced.

CONCLUSION: The findings suggest that PHGDH has a regulatory role in breast cancer cell proliferation and may be a potential prognostic marker and therapeutic target in breast cancer.

RevDate: 2021-10-04
CmpDate: 2021-10-04

Lozano R, Salles DC, Sandhu S, et al (2021)

Association between BRCA2 alterations and intraductal and cribriform histologies in prostate cancer.

European journal of cancer (Oxford, England : 1990), 147:74-83.

BACKGROUND: Intraductal (IDC) and cribriform (CRIB) histologies in prostate cancer have been associated with germline BRCA2 (gBRCA2) mutations in small retrospective series, leading to the recommendation of genetic testing for patients with IDC in the primary tumour.

PATIENTS AND METHODS: To examine the association of gBRCA2 mutations and other tumour molecular features with IDC and/or cribriform (CRIB) histologies, we conducted a case-control study in which primary prostate tumours from 58 gBRCA2 carriers were matched (1:2) by Gleason Grade Group and specimen type to 116 non-carriers. Presence/absence of IDC and CRIB morphologies was established by two expert uropathologists blinded to gBRCA2 status. Fluorescent in-situ hybridization (FISH) and next-generation sequencing (NGS) were used to detect BRCA2 alterations, PTEN deletions and TMPRSS2-ERG fusions. Chi-squared tests were used to compare the frequency of IDC and CRIB in gBRCA2 carriers and controls and to assess associations with other variables. Logistic regression models were constructed to identify independent factors associated with both histology patterns.

RESULTS: No significant differences between gBRCA2 carriers and non-carriers were observed in the prevalence of IDC (36% gBRCA2 versus 50% non-carriers, p = 0.085) or CRIB (53% gBRCA2 versus 43% non-carriers p = 0.197) patterns. However, IDC histology was independently associated with bi-allelic BRCA2 alterations (OR 4.3, 95%CI 1.1-16.2) and PTEN homozygous loss (OR 5.2, 95%CI 2.1-13.1). CRIB morphology was also independently associated with bi-allelic BRCA2 alterations (OR 5.6, 95%CI 1.7-19.3).

CONCLUSIONS: While we found no association between gBRCA2 mutations and IDC or CRIB histologies, bi-allelic BRCA2 loss in primary prostate tumours was significantly associated with both variant morphologies, independently of other clinical-pathologic factors.

RevDate: 2022-04-20

Sarawagi A, J Maxwell (2021)

Chyle Leak after Right Axillary Lymph Node Dissection in a Patient with Breast Cancer.

Case reports in surgery, 2021:8812315.

BACKGROUND: A female patient was diagnosed with a right-sided chyle leak following right skin sparing mastectomy, axillary lymph node dissection, and immediate tissue expander placement in the setting of invasive ductal carcinoma status post neoadjuvant chemotherapy. Summary. Our patient underwent a level I and II right axillary lymph node dissection followed by an axillary drain placement. On the first postoperative day, a change from serosanguinous to milky fluid in this drain was noted. The patient was diagnosed with a chyle leak based on the milky appearance and elevated triglyceride levels in the fluid. While chyle leaks are rare after an axillary dissection and even rarer to present on the right side, it is a complication of which breast surgeons should be aware. The cause of this complication is thought to be due to injury of the main thoracic duct, its branches, the subclavian duct, or its tributaries. Management is usually conservative; however, awareness of this potential complication even on the right side is of the utmost importance.

CONCLUSION: Chyle leaks are an uncommon complication of axillary node dissections and even rarer for them to present on the right side. It can be diagnosed by monitoring the drainage for changes in appearance and volume and by conducting supporting laboratory tests. Conservative management is generally suggested.

RevDate: 2021-07-05
CmpDate: 2021-07-05

Pramod N, Nigam A, Basree M, et al (2021)

Comprehensive Review of Molecular Mechanisms and Clinical Features of Invasive Lobular Cancer.

The oncologist, 26(6):e943-e953.

Invasive lobular carcinoma (ILC) accounts for 10% to 15% of breast cancers in the United States, 80% of which are estrogen receptor (ER)-positive, with an unusual metastatic pattern of spread to sites such as the serosa, meninges, and ovaries, among others. Lobular cancer presents significant challenges in detection and clinical management given its multifocality and multicentricity at presentation. Despite the unique features of ILC, it is often lumped with hormone receptor-positive invasive ductal cancers (IDC); consequently, ILC screening, treatment, and follow-up strategies are largely based on data from IDC. Despite both being treated as ER-positive breast cancer, querying the Cancer Genome Atlas database shows distinctive molecular aberrations in ILC compared with IDC, such as E-cadherin loss (66% vs. 3%), FOXA1 mutations (7% vs. 2%), and GATA3 mutations (5% vs. 20%). Moreover, compared with patients with IDC, patients with ILC are less likely to undergo breast-conserving surgery, with lower rates of complete response following therapy as these tumors are less chemosensitive. Taken together, this suggests that ILC is biologically distinct, which may influence tumorigenesis and therapeutic strategies. Long-term survival and clinical outcomes in patients with ILC are worse than in stage- and grade-matched patients with IDC; therefore, nuanced criteria are needed to better define treatment goals and protocols tailored to ILC's unique biology. This comprehensive review highlights the histologic and clinicopathologic features that distinguish ILC from IDC, with an in-depth discussion of ILC's molecular alterations and biomarkers, clinical trials and treatment strategies, and future targets for therapy. IMPLICATIONS FOR PRACTICE: The majority of invasive lobular breast cancers (ILCs) are hormone receptor (HR)-positive and low grade. Clinically, ILC is treated similar to HR-positive invasive ductal cancer (IDC). However, ILC differs distinctly from IDC in its clinicopathologic characteristics and molecular alterations. ILC also differs in response to systemic therapy, with studies showing ILC as less sensitive to chemotherapy. Patients with ILC have worse clinical outcomes with late recurrences. Despite these differences, clinical trials treat HR-positive breast cancers as a single disease, and there is an unmet need for studies addressing the unique challenges faced by patients diagnosed with ILC.

RevDate: 2021-05-06
CmpDate: 2021-03-11

Da Costa I, Belnou P, Soulier A, et al (2021)

Impact of delayed patient flow on surgical outcomes after hip fracture: An observational study.

European journal of anaesthesiology, 38 Suppl 1:S67-S68.

RevDate: 2021-10-11
CmpDate: 2021-10-11

Mohamed RI, Bargal SA, Mekawy AS, et al (2021)

The overexpression of DNA repair genes in invasive ductal and lobular breast carcinomas: Insights on individual variations and precision medicine.

PloS one, 16(3):e0247837.

In the era of precision medicine, analyzing the transcriptomic profile of patients is essential to tailor the appropriate therapy. In this study, we explored transcriptional differences between two invasive breast cancer subtypes; infiltrating ductal carcinoma (IDC) and lobular carcinoma (LC) using RNA-Seq data deposited in the TCGA-BRCA project. We revealed 3854 differentially expressed genes between normal ductal tissues and IDC. In addition, IDC to LC comparison resulted in 663 differentially expressed genes. We then focused on DNA repair genes because of their known effects on patients' response to therapy and resistance. We here report that 36 DNA repair genes are overexpressed in a significant number of both IDC and LC patients' samples. Despite the upregulation in a significant number of samples, we observed a noticeable variation in the expression levels of the repair genes across patients of the same cancer subtype. The same trend is valid for the expression of miRNAs, where remarkable variations between patients' samples of the same cancer subtype are also observed. These individual variations could lie behind the differential response of patients to treatment. The future of cancer diagnostics and therapy will inevitably depend on high-throughput genomic and transcriptomic data analysis. However, we propose that performing analysis on individual patients rather than a big set of patients' samples will be necessary to ensure that the best treatment is determined, and therapy resistance is reduced.

RevDate: 2026-01-27
CmpDate: 2021-05-03

Mills MN, Walker C, Thawani C, et al (2021)

Trastuzumab Emtansine (T-DM1) and stereotactic radiation in the management of HER2+ breast cancer brain metastases.

BMC cancer, 21(1):223.

BACKGROUND: Due to recent concerns about the toxicity of trastuzumab emtansine (T-DM1) with stereotactic radiation, we assessed our institutional outcomes treating HER2-positive breast cancer brain metastases (BCBM) with T-DM1 and stereotactic radiation.

METHODS: This is a single institution series of 16 patients with HER2-positive breast cancer who underwent 18 stereotactic sessions to 40 BCBM from 2013 to 2019 with T-DM1 delivered within 6 months. The Kaplan-Meier method was used to calculate overall survival (OS), local control (LC), distant intracranial control (DIC), and systemic progression-free survival (sPFS) from the date of SRS. A neuro-radiologist independently reviewed follow-up imaging.

RESULTS: One patient had invasive lobular carcinoma, and 15 patients had invasive ductal carcinoma. All cases were HER2-positive, while 10 were hormone receptor (HR) positive. Twenty-four lesions were treated with stereotactic radiosurgery (SRS) to a median dose of 21 Gy (14-24 Gy). Sixteen lesions were treated with fractionated stereotactic radiation (FSRT) with a median dose of 25 Gy (20-30Gy) delivered in 3 to 5 fractions. Stereotactic radiation was delivered concurrently with T-DM1 in 19 lesions (48%). Median follow up time was 13.2 months from stereotactic radiation. The 1-year LC, DIC, sPFS, and OS were 75, 50, 30, and 67%, respectively. There was 1 case of leptomeningeal progression and 1 case (3%) of symptomatic radionecrosis.

CONCLUSIONS: We demonstrate that stereotactic radiation and T-DM1 is well-tolerated and effective for patients with HER2-positive BCBM. An increased risk for symptomatic radiation necrosis was not noted in our series.

RevDate: 2023-11-11
CmpDate: 2021-10-25

Hartleben G, Schorpp K, Kwon Y, et al (2021)

Combination therapies induce cancer cell death through the integrated stress response and disturbed pyrimidine metabolism.

EMBO molecular medicine, 13(4):e12461.

By accentuating drug efficacy and impeding resistance mechanisms, combinatorial, multi-agent therapies have emerged as key approaches in the treatment of complex diseases, most notably cancer. Using high-throughput drug screens, we uncovered distinct metabolic vulnerabilities and thereby identified drug combinations synergistically causing a starvation-like lethal catabolic response in tumor cells from different cancer entities. Domperidone, a dopamine receptor antagonist, as well as several tricyclic antidepressants (TCAs), including imipramine, induced cancer cell death in combination with the mitochondrial uncoupler niclosamide ethanolamine (NEN) through activation of the integrated stress response pathway and the catabolic CLEAR network. Using transcriptome and metabolome analyses, we characterized a combinatorial response, mainly driven by the transcription factors CHOP and TFE3, which resulted in cell death through enhanced pyrimidine catabolism as well as reduced pyrimidine synthesis. Remarkably, the drug combinations sensitized human organoid cultures to the standard-of-care chemotherapy paclitaxel. Thus, our combinatorial approach could be clinically implemented into established treatment regimen, which would be further facilitated by the advantages of drug repurposing.

RevDate: 2024-06-27
CmpDate: 2021-10-15

Schwartz CJ, Boroujeni AM, Khodadadi-Jamayran A, et al (2021)

Molecular analysis of encapsulated papillary carcinoma of the breast with and without invasion.

Human pathology, 111:67-74.

Encapsulated papillary carcinomas (EPCs) of the breast are a unique variant of papillary carcinoma confined to a cystic space with absent or attenuated myoepithelial cell layer. Although staged as an in situ lesion, it can be associated with invasive ductal carcinoma (IDC). We sought to compare the genomic characteristics of pure EPC and EPC with associated invasive carcinoma (EPCi) at the genomic level. All cases of EPCi harbored recurrent hotspot mutations in PIK3CA. PIK3CA, KMT2A, and CREBBP deleterious somatic events were found across both tumor groups, irrespective of invasion status. At the whole transcriptomic level, EPCi cases displayed remarkably similar mRNA profiles when compared to EPC. When EPCi cases were compared with their corresponding IDC, despite significant overlap, we identified differential gene expression in 39 genes with enrichment of multiple pathways including extracellular matrix regulation, cell adhesion, and collagen fibril organization. Despite morphologic, genotypic, and transcriptomic overlap between pure EPC and EPCi, the latter tumors are likely advanced lesions with PIK3CA activating mutations and enrichment of stromal-related genes implicated in the switch to IDC.

RevDate: 2022-04-01
CmpDate: 2022-03-31

He B, Chen J, Song W, et al (2021)

miR-646/TET1 mediated demethylation of IRX1 promoter upregulates HIST2H2BE and promotes the progression of invasive ductal carcinoma.

Genomics, 113(3):1469-1481.

BACKGROUND: This study aimed to explore role of miR-646 in breast IDC.

METHODS: miR-646, TET1, IRX1, and HIST2H2BE expression was detected by RT-qPCR and/or Western blot analysis. The methylation status of IRX1 promoter region was evaluated by methylation specific PCR. ChIP assay was used to determine the enrichment of TET1 at IRX1 promoter region. Loss- and gain-of functions were performed to determine the roles of miR-646, TET1, IRX1, and HIST2H2BE in cell proliferation, migration, invasion, and apoptosis. The tumor growth, volume, weight, and apoptosis status were measured.

RESULTS: miR-646 was upregulated while TET1 was downregulated in IDC tissues. miR-646 targeted TET1. Downregulated TET1 impairs demethylation of IRX1 promoter region resulting in reduced expression of IRX1, which subsequently leads to upregulation of HIST2H2BE in IDC. Consequently, elevated HIST2H2BE promotes progression of IDC.

CONCLUSION: Our study has demonstrated that miR-646 facilitates the tumorigenesis of IDC via regulating TET1/IRX1/HIST2H2BE axis.

RevDate: 2026-01-27
CmpDate: 2021-05-03

Ji L, Cheng L, Zhu X, et al (2021)

Risk and prognostic factors of breast cancer with liver metastases.

BMC cancer, 21(1):238.

BACKGROUND: Liver metastasis is a significant adverse predictor of overall survival (OS) among breast cancer patients. The purpose of this study was to determine the risk and prognostic factors of breast cancer with liver metastases (BCLM).

METHODS: Data on 311,573 breast cancer patients from the Surveillance, Epidemiology, and End Results (SEER) database and 1728 BCLM patients from Fudan University Shanghai Cancer Center (FUSCC) were included. Logistic regression was used to identify risk factors for liver metastasis. Cox proportional hazards regression model was adopted to determine independent prognostic factors in BCLM patients.

RESULTS: Young age, invasive ductal carcinoma, higher pathological grade, and subtype of triple-negative and human epidermal growth factor receptor 2 positive (HER2+) were risk factors for developing liver metastasis. The median OS after liver metastasis was 20.0 months in the SEER database and 27.3 months in the FUSCC dataset. Molecular subtypes also played a critical role in the survival of BCLM patients. We observed that hormone receptor-positive (HR+)/HER2+ patients had the longest median OS (38.0 for SEER vs. 34.0 months for FUSCC), whereas triple-negative breast cancer had the shortest OS (9.0 vs. 15.6 months) in both SEER and FUSCC. According to the results from the FUSCC, the subtype of HR+/HER2+ (hazard ratio (HR) = 2.62; 95% confidence interval (CI) = 1.88-3.66; P < 0.001) and HR-/HER2+ (HR = 3.43; 95% CI = 2.28-5.15; P < 0.001) were associated with a significantly increased death risk in comparison with HR+/HER2- patients if these patients did not receive HER2-targeted therapy. For those who underwent HER2-targeted therapy, however, HR+/HER2+ subtype reduced death risk compared with HR+/HER2- subtype (HR = 0.74; 95% CI = 0.58-0.95; P < 0.001).

CONCLUSIONS: Breast cancer patients at a high risk for developing liver metastasis deserve more attention during the follow-up. BCLM patients with HR+/HER2+ subtype displayed the longest median survival than HR+/HER2- and triple-negative patients due to the introduction of HER2-targeted therapy and therefore it should be recommended for HER2+ BCLM patients.

RevDate: 2021-12-17
CmpDate: 2021-12-17

Togashi K, Nishitsuka K, Hayashi S, et al (2021)

Metastatic Orbital Tumor From Breast Ductal Carcinoma With Neuroendocrine Differentiation Initially Presenting as Ocular Symptoms: A Case Report and Literature Review.

Frontiers in endocrinology, 12:625663.

BACKGROUND: Orbital metastases from cancers of various organs can arise via the hematogenous route, and many originate from breast, prostate, and lung cancers. Such metastatic orbital tumors may be diagnosed before the primary tumor. We have encountered a case of breast ductal carcinoma with neuroendocrine differentiation that metastasized to the orbit and responded to chemotherapy, with improvement in visual function.

CASE PRESENTATION: A woman in her fifties visited our ophthalmology department with a chief complaint of foreign body sensation and exophthalmos in her right eye. An elastic soft mass was palpated from the lateral orbit to the temporal region. A systemic examination revealed breast cancer and a metastatic orbital tumor. Excisional biopsy of the breast revealed a diagnosis of invasive ductal carcinoma with neuroendocrine differentiation, and immunohistochemical examination was negative for cytokeratin 7, making the case unusual. Chemotherapy was remarkably effective, and the tumor size decreased, resulting in improvement of visual function. Her general condition and quality of life are still good at present. We searched the PubMed English language literature focusing on metastatic orbital tumors from breast cancer in which ocular symptoms had been the initial presenting sign. No previous reports have documented neuroendocrine differentiation or cytokeratin 7 expression in isolated orbital metastases from breast cancer. Although it is not possible to be certain from this case alone, we speculated that some such cases might involve cytokeratin 7-negative invasive breast cancer with neuroendocrine differentiation.

CONCLUSION: We have described our experience of a very rare case of cytokeratin 7 negative breast ductal carcinoma with neuroendocrine differentiation that metastasized to the orbit and formed a solitary giant tumor initially manifesting as ocular symptoms.

RevDate: 2021-09-24
CmpDate: 2021-09-24

Bondy S, Tajzler C, Hotte SJ, et al (2020)

Genomic and Clinical Correlates of Adrenocortical Carcinoma in an Adult Patient with Li-Fraumeni Syndrome: A Case Report.

Current oncology (Toronto, Ont.), 28(1):226-232.

Li-Fraumeni Syndrome (LFS) is defined by germline mutations of the p53 tumour suppressor gene. Adrenocortical carcinoma (ACC) is a rare aggressive malignancy that is commonly associated with LFS. Most LFS-linked ACC cases occur in children, and limited research has been dedicated to the clinical outcomes and genomics of adult cases with LFS-linked ACC. We report on a 34-year-old female who was diagnosed with three separate malignancies: stage III invasive ductal carcinoma of the right breast, metastatic ACC from the right adrenal gland, and grade 2 pleomorphic sarcoma of the left hand. Her invasive breast ductal carcinoma was treated with neoadjuvant chemotherapy, and she received a bilateral mastectomy after her LFS was confirmed with genetic blood testing. Adrenal ACC was initially treated with a right nephrectomy and adrenalectomy, followed by adjuvant mitotane and two lines of chemotherapy after disease recurrence. Her hand sarcoma was treated by second ray amputation. Further, we conducted deep next-generation sequencing of each of her unique tumour tissue samples using FoundationONE CDx. A whole-genome shot capture followed by in vitro sequencing performed by the Illumina[®] HiSeq platform revealed a germline P191fs*18 TP53 mutation across all three tissue samples. This case provides insight into the genomics and clinical characteristics of LFS-linked adult-onset ACC and demonstrated that p53 mutations were preserved throughout each malignancy, without apparent treatment pressures on genomic profiling. This case reinforces the critical importance of adopting best practices for LFS, which include the implementation of highly vigilant screening and management of care in a multidisciplinary setting.

RevDate: 2026-01-27
CmpDate: 2021-06-17

Zhang J, Lu CY, Chen HM, et al (2021)

Neoadjuvant Chemotherapy or Endocrine Therapy for Invasive Ductal Carcinoma of the Breast With High Hormone Receptor Positivity and Human Epidermal Growth Factor Receptor 2 Negativity.

JAMA network open, 4(3):e211785.

IMPORTANCE: Although neoadjuvant endocrine therapy (NET) is an alternative to chemotherapy for strongly hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (ERBB2)-negative breast cancer, evidence is currently lacking regarding the probable survival outcomes of NET in comparison with those of neoadjuvant chemotherapy (NACT) for this cancer.

OBJECTIVE: To evaluate all-cause mortality among patients with strongly HR-positive and ERBB2-negative breast cancer treated with NET vs NACT.

This cohort study included patients with a diagnosis of invasive ductal carcinoma (IDC) with strong HR positivity and ERBB2 negativity, treated between January 1, 2009, and December 31, 2016, with follow-up from the index date (ie, date of IDC diagnosis) to December 31, 2018. The data came from the Taiwan Cancer Registry Database. Data were analyzed from January to November 2020.

EXPOSURES: NET vs NACT for IDC with strong HR positivity and ERBB2 negativity.

MAIN OUTCOMES AND MEASURES: The primary end point was all-cause mortality. Propensity score matching was performed, and Cox proportional hazard models were used to analyze all-cause mortality among patients undergoing different neoadjuvant treatments.

RESULTS: A total of 640 patients (297 [46.4%] aged 20-49 years) undergoing NET (145 patients [22.7%]) or NACT (495 patients [77.3%]) were eligible for further analysis. In the multivariate Cox regression analyses, the adjusted hazard ratio (aHR) for all-cause mortality among the NET cohort compared with the NACT cohort was 2.67 (95% CI, 1.95-3.51; P < .001). The aHRs for age were 1.13 (95% CI, 1.03-2.24), 1.25 (95% CI, 1.13-2.45), and 1.37 (95% CI, 1.17-3.49) for all-cause mortality among patients aged 50 to 59, 60 to 69, and 70 years or older, respectively, compared with those aged 20 to 49 years (P = .002); the aHR for all-cause mortality among premenopausal women was 1.35 (95% CI, 1.13-1.56) compared with postmenopausal women (P < .001); and that of patients with a Charlson Comorbidity Index score of 2 or greater was 1.77 (1.37-2.26) compared with those with a score of 0 (P < .001). The aHRs of all-cause mortality for clinical tumor stage 2, 3, and 4 compared with 1 were 1.84 (95% CI, 1.07-3.40), 1.97 (95% CI, 1.03-3.77), and 2.49 (95% CI, 1.29-4.81), respectively (P = .009). The aHRs for all-cause mortality by clinical nodal (cN) stages were 1.49 (95% CI, 1.13-1.99) and 1.84 (95% CI, 1.31-2.61) for cN stage 1 and cN stages 2 or 3, respectively, compared with cN stage 0 (P = .005); those for differentiation were 1.77 (95% CI, 1.24-2.54) and 2.31 (95% CI, 1.61-3.34) for differentiation grade 2 and differentiation grade 3, respectively, compared with differentiation grade 1 (P < .001).

CONCLUSIONS AND RELEVANCE: The findings of this study suggest that for patients with strongly HR-positive and ERBB2-negative IDC, NACT may be considered the first choice for neoadjuvant treatment.

RevDate: 2026-01-27
CmpDate: 2021-03-22

Oh BH, Woo CG, Lee YJ, et al (2021)

Brain metastasis with subtype conversion in a patient with male breast cancer: A case report.

Medicine, 100(11):e24373.

RATIONALE: Brain metastasis of male breast cancer is extremely rare, and the pathological changes between the primary tumor and the metastatic brain tumor have not been reported. Herein, we report for the first time a case of male breast cancer with metastasis to the parietal lobe with subtype conversion after metastasis.

PATIENT CONCERNS: we describe a 45-year-old male patient admitted for an incidentally found brain tumor after a motorcycle accident. The patient had been treated for breast cancer 5 years previously. The primary tumor was an invasive ductal carcinoma classified as pT1N1M0 with hormone receptor positivity (estrogen receptor ++, progesterone receptor +++, human epidermal growth factor receptor-type2 (HER2) +) and was treated with surgery, adjuvant chemotherapy, radiation therapy and endocrine therapy (tamoxifen).

DIAGNOSES: Magnetic resonance imaging revealed a well enhanced focal solid tumor in the right parietal lobe (5.0 × 4.2 cm in size), Immunohistochemical staining revealed cerebral metastases of breast cancer with HER2 subtype conversion (estrogen receptor +++, progesterone receptor +++, HER2 -).

INTERVENTIONS: The patient was successfully treated with surgery and whole brain irradiation (3 Gy × 10 fractions).

OUTCOMES: There was no additional complication after the surgery and the patient transferred to oncology department for chemotherapy. 2 years later, he had gamma knife radiosurgery due to the recurred brain lesion and after that he discontinued the treatment and opted for hospice care.

LESSONS: Male breast cancer with metastasis to the brain is an extremely rare condition. Although a few similar cases have been reported, subtype conversion in similar cases has not been reported. Therefore, we report this case of a male patient with brain metastasis of invasive ductal carcinoma with HER2 status conversion after metastasis.

RevDate: 2021-10-04
CmpDate: 2021-10-04

Bar-Or RL, Kor A, Jaljuli I, et al (2021)

The Epidemiology of Substance Use Disorders among the Adult Jewish Population in Israel.

European addiction research, 27(5):362-370.

INTRODUCTION: Substance use disorders (SUDs) are a leading cause of morbidity and mortality worldwide, having a profound and global impact on health, well-being, safety, and productivity. Although traditionally the prevalence of SUDs in Israel has been estimated to be lower than those in high-income countries, estimates and characteristics of individuals with SUDs in the past decade are lacking. In this work, we explored the prevalence of SUDs among the adult Jewish population in Israel, per different classes of substances across sex, age group, and other sociodemographic factors.

METHODS: Data from an online representative sample of 4,025 respondents were collected, including the alcohol, smoking, and substance involvement screening test (ASSIST) metric and sociodemographic data.

RESULTS: We found that the most common SUDs were alcohol (10.5% [9.5-11.4]), cannabis (9.0% [8.2-9.9]), and sedative (3.6% [3.0-4.2]) use disorders. Alcohol-cannabis (3.2% [2.7-3.7]) and alcohol-sedative (1.04% [0.7-1.35]) were the most prevalent co-occurring SUDs. Among those with cannabis use disorder, the prevalence of alcohol use disorder was found to be 35.3% [30.4-40.2]. The estimated risk for alcohol use disorder was found to be inversely proportional to age, cannabis use disorder increased, peaked, and decreased with age, and that of sedative use disorder increased with age, particularly among women. While older individuals (in the 51-60 years of age group) were at lower risk (OR = 0.5 [0.3, 0.8]) compared to those <20 years of age for alcohol use disorder, they were at increased risk for sedative use disorder (OR = 3.1 [1.2, 9.7]).

CONCLUSIONS: These findings represent substantially higher rates of SUDs in Israel than those previously reported and should affect resources allocated to addiction prevention and treatment. Further research on the role of gender, age, culture, and ethnicity in the propensity to develop SUDs is necessary for the development of more focused preventive and intervention measures. Focusing on non-Jewish populations in Israel and broadening the scope to include behavioral addictions should be addressed in future studies.

RevDate: 2021-05-21
CmpDate: 2021-05-21

Levin Y, Lev Bar-Or R, Forer R, et al (2021)

The association between type of trauma, level of exposure and addiction.

Addictive behaviors, 118:106889.

Exposure to trauma is considered a risk factor for the development of addictive disorders. Currently, there is a knowledge gap concerning specific links between types and levels of exposure to traumatic events and addiction.In this study we explored the associations between interpersonal trauma and risk of addictive behaviors, stratified by type of trauma (physical, weapon, sexual assault, and combat) and level of exposure (direct/indirect), focusing on a wide range of substances and behaviors. Data from an online representative sample of 4025 respondents were collected, including the Life Events Checklist (LEC-5), substance use disorders and behavioral addictions metrics, and sociodemographic data. Substantial differences were found between specific types of trauma and risk of addiction. Among those exposed to sexual assault, the risk of alcohol use disorder was found to 15.4%, 95%CI[14.4-16.4%], compared to 12.1%,95%CI[11.3-12.8] among those exposed to combat-related trauma. Both direct and indirect exposure to trauma were found to be significantly related with risk of addiction. While direct exposure was most highly associated with addictions across several types of trauma, in the case of combat-related trauma, indirect exposure was more highly associated with alcohol and pornography addiction (14.5%,95%CI[13.2-15.8%] and 10.0%, 95%CI[6.3-15.0%], respectively) compared to direct exposure (10.7%,95%CI[9.9-11.6%] and 7.4%, 95%CI[4.7-11.6%], respectively). Our findings emphasize the strong association between all types of trauma and the risk of several specific substance and behavioral addictions. Specifically, the role of indirect exposure to trauma is highlighted.

RevDate: 2026-01-27
CmpDate: 2022-01-24

Bergeron A, MacGrogan G, Bertaut A, et al (2021)

Triple-negative breast lobular carcinoma: a luminal androgen receptor carcinoma with specific ESRRA mutations.

Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc, 34(7):1282-1296.

Primary triple-negative invasive lobular breast carcinomas (TN-ILCs), which do not express hormone receptors and HER2 at diagnosis, are rare and poorly known. In this study, we analyzed the largest TN-ILC series ever reported in the literature, in comparison to phenotypically similar breast tumor subtypes: triple-negative invasive ductal carcinoma (TN-IDC) and hormone receptor-positive invasive lobular carcinoma (HR + ILC). All primary TN-ILCs registered in our database between 2000 and 2018 (n = 38) were compared to tumors from control groups, matched by stage and Elston/Ellis grade, with regard to clinical, pathologic, and immunohistochemical characteristics. A comparative molecular analysis (whole-exome and RNA sequencing using next-generation technology) was also performed. We found that TN-ILC patients were older than those with HR + ILC (P = 0.002) or TN-IDC (P < 0.001). Morphologically, TN-ILCs had aggressive phenotypes, with more pleomorphism (P = 0.003) and higher nuclear grades than HR + ILCs (P = 0.009). Immunohistochemistry showed that TN-ILCs less frequently expressed basal markers (CK5/6, EGFR and SOX10) than TN-IDCs (P < 0.001), while androgen receptor (AR) positivity was more prevalent (P < 0.001). Survival curves analysis did not show differences between TN-ILC and TN-IDC patients, while overall and distant metastasis-free survival were significantly worse compared to those with HR + ILCs (P = 0.047 and P = 0.039, respectively). At a molecular level, we found that TN-ILCs had particular transcriptomic profiles, characterized by increased AR signaling, and associated with frequent alterations in the PI3K network and ERBB2. Interestingly, whole-exome analysis also identified three specific recurrent ESRRA hotspot mutations in these tumors, which have never been described in breast cancer to date and which were absent in the other two tumor subtypes. Our findings highlight that TN-ILC is a unique aggressive breast cancer associated with elderly age, which belong to the luminal androgen receptor subtype as determined by immunohistochemistry and transcriptomic profiling. Moreover, it harbors specific molecular alterations (PI3K, ERBB2 and ESRRA) which may pave the way for new targeted therapeutic strategies.

RevDate: 2026-01-27
CmpDate: 2021-09-01

Zhang J, Zhou B, Sun J, et al (2021)

Betulin ameliorates 7,12-dimethylbenz(a)anthracene-induced rat mammary cancer by modulating MAPK and AhR/Nrf-2 signaling pathway.

Journal of biochemical and molecular toxicology, 35(7):e22779.

The aim of the present study is to explore the preventive efficacy of betulin (BE) in 7,12-dimethylbenz(a)anthracene (DMBA)-administered mammary cancer by modulating Ahr/Nrf2 signaling in experimental models. The mammary cancer was stimulated by the addition of DMBA (25 mg/kg/b.Wt) mixed in 1 ml of vehicle solution (sunflower oil and saline 1:1) through subcutaneous injection. The DMBA-exposed mammary tumor models showed low bodyweight, elevated quantities of lipid peroxidation molecules (TBARS and LOOH), and low enzymatic (GPx, SOD, and CAT), and nonenzymatic (GSH, vitamin C, and vitamin E) antioxidant activities in plasma and mammary tissues. Moreover, histopathological studies confirmed that invasive ductal carcinoma was observed in DMBA-induced mammary tissue of the experimental model. Dietary oral supplementation of BE prevents the loss of bodyweight, overproduces lipid peroxidation, and restores the antioxidant activities in DMBA-exposed experimental animals. The nuclear factor erythroid 2-related factor 2 (Nrf2) is a crucial antioxidant protein that involves preventing numerous cancers. Therefore, Nrf2-associated signaling concern is a significant target for preventing mammary cancer. This study observed an increased expression of MAPKs, Keap1, ARNT, AhR, and CYP1A1, whereas decreased expression of HO-1 and Nrf2 in DMBA-induced cancer-bearing experimental animals. The oral supplementation of BE effectively modulates the expression of MAPKs, AhR/Nrf2-associated protein expressions in DMBA-exposed experimental animals. This current study concluded that BE is a strong antioxidant, which triggers the MAPKs-mediated oxidative stress and inhibits proliferative markers by restoring the activity of Nrf2 signaling.

RevDate: 2021-03-30

Sugimoto H, Oda G, Yokoyama M, et al (2021)

Hydronephrosis Caused by Metastatic Breast Cancer.

Case reports in oncology, 14(1):378-385.

Breast cancer metastasizes mainly to organs such as bone, lung, and liver, whereas metastases to the peritoneum and urinary tract are rare. Metastasis to the peritoneum or urinary tract may result in renal dysfunction, infection, and painful hydronephrosis. In our hospital, 1,409 breast cancer surgeries were performed between January 2004 and December 2015, and 7 cases of hydronephrosis associated with recurrence were observed. The median age of patients was 69 years (57-79 years). The median time from surgery to diagnosis of hydronephrosis was 47 months (20-70 months). Histology was invasive ductal carcinoma (IDC) in 6 cases and invasive lobular carcinoma (ILC) in 1 case. There were 6 bilateral cases and 1 unilateral case of hydronephrosis. The causes were retroperitoneal metastasis in 5 cases and lymph node metastasis in 2 cases. The hydronephrosis was untreated in 2 cases, and treated with a ureteral stent in 2 cases, nephrostomy in 1 case, and nephrostomy due to ureteral stent failure in 2 cases. The median survival from the onset of hydronephrosis was 12 months (3-57 months). Although the probability of hydronephrosis in breast cancer recurrence was not high, care must be taken to avoid renal dysfunction, infection, or pain, which may require treatment.

RevDate: 2025-05-30
CmpDate: 2021-08-30

Garcia AM, Bishop EL, Li D, et al (2021)

Tolerogenic effects of 1,25-dihydroxyvitamin D on dendritic cells involve induction of fatty acid synthesis.

The Journal of steroid biochemistry and molecular biology, 211:105891.

The active form of vitamin D, 1,25-dihydroxyvitamin D (1,25D) is a potent regulator of immune function, promoting anti-inflammatory, tolerogenic T cell responses by modulating antigen presentation by dendritic cells (DC). Transcriptomic analyses indicate that DC responses to 1,25D involve changes in glycolysis, oxidative phosphorylation, electron transport and the TCA cycle. To determine the functional impact of 1,25D-mediated metabolic remodelling, human monocyte-derived DC were differentiated to immature (+vehicle, iDC), mature (+LPS, mDC), and immature tolerogenic DC (+1,25D, itolDC) and characterised for metabolic function. In contrast to mDC which showed no change in respiration, itolDC showed increased basal and ATP-linked respiration relative to iDC. Tracer metabolite analyses using [13]C -labeled glucose showed increased lactate and TCA cycle metabolites. Analysis of lipophilic metabolites of [13]C-glucose revealed significant incorporation of label in palmitate and palmitoleate, indicating that 1,25D promotes metabolic fatty acid synthesis in itolDC. Inhibition of fatty acid synthesis in itolDC altered itolDC morphology and suppressed expression of CD14 and IL-10 by these cells. These data indicate that the ability of 1,25D to induce tolerogenic DC involves metabolic remodelling leading to synthesis of fatty acids.

RevDate: 2026-01-27
CmpDate: 2021-08-05

Nagasawa S, Kuze Y, Maeda I, et al (2021)

Genomic profiling reveals heterogeneous populations of ductal carcinoma in situ of the breast.

Communications biology, 4(1):438.

In a substantial number of patients, ductal carcinoma in situ (DCIS) of the breast will never progress to invasive ductal carcinoma, and these patients are often overtreated under the current clinical criteria. Although various candidate markers are available, relevant markers for delineating risk categories have not yet been established. In this study, we analyzed the clinical characteristics of 431 patients with DCIS and performed whole-exome sequencing analysis in a 21-patient discovery cohort and targeted deep sequencing analysis in a 72-patient validation cohort. We determined that age <45 years, HER2 amplification, and GATA3 mutation are possible indicators of relapse. PIK3CA mutation negativity and PgR negativity were also suggested to be risk factors. Spatial transcriptome analysis further revealed that GATA3 dysfunction upregulates epithelial-to-mesenchymal transition and angiogenesis, followed by PgR downregulation. These results reveal the existence of heterogeneous cell populations in DCIS and provide predictive markers for classifying DCIS and optimizing treatment.

RevDate: 2021-05-13

Alyami H, Yoo TK, Cheun JH, et al (2021)

Clinical Features of Breast Cancer in South Korean Patients with Germline TP53 Gene Mutations.

Journal of breast cancer, 24(2):175-182.

PURPOSE: Li-Fraumeni syndrome (LFS) is a rare autosomal cancer syndrome caused by a germline mutation in the TP53 gene. Breast cancer in LFS patients is of various subtypes; however, limited data are available on the clinicopathological features of these subtypes and their appropriate treatments. This study aimed to review the clinical features and treatments for breast cancer in South Korean patients with germline TP53 mutations.

METHODS: Data on the clinicopathological features and treatment of all breast cancer patients with LFS were collected retrospectively from the available database of 4 tertiary hospitals in the Republic of Korea.

RESULTS: Twenty-one breast cancer cases in 12 unrelated women with confirmed germline TP53 mutations were included in the study. The median age at diagnosis was 33.5 years. The histopathological diagnosis included invasive ductal carcinoma (n = 16), ductal carcinoma in situ (n = 3), and malignant phyllodes tumor (n = 2). While 42% and 31% of the cases were positive for estrogen and progesterone receptors, respectively, 52.6% were human epidermal growth factor receptor 2 (HER2) positive, and 21% were triple-negative. The treatments included mastectomy (52%) and breast-conserving surgery (38%). Five patients underwent radiotherapy (RT). The median follow-up period was 87.5 (8-222) months. There were 3 ipsilateral and 4 contralateral breast recurrences during the follow-up, and 8 patients developed new primary cancers. In the post-RT subgroup, there were 2 ipsilateral and 2 contralateral breast recurrences in 1 patient, and 4 patients had a new primary cancer.

CONCLUSION: As reported in other countries, breast cancer in LFS patients in South Korea had an early onset and were predominantly but not exclusively positive for HER2. A multidisciplinary approach with adherence to the treatment guidelines, considering mastectomy, and avoiding RT is encouraged to prevent RT-associated sequelae in LFS patients.

RevDate: 2021-04-22

Kricheli-Katz T, T Regev (2021)

The effect of language on performance: do gendered languages fail women in maths?.

NPJ science of learning, 6(1):9.

Research suggests that gendered languages are associated with gender inequality. However, as languages are embedded in cultures, evidence for causal effects are harder to provide. We contribute to this ongoing debate by exploring the relationship between gendered languages and the gender gap in mathematics achievements. We provide evidence for causality by exploiting the prominent (but not exclusive) practice in gendered languages of using masculine generics to address women. In an experiment on a large representative sample of the Hebrew-speaking adult population in Israel, we show that addressing women in the feminine, compared to addressing them in the masculine, reduces the gender gap in mathematics achievements by a third. These effects are stronger among participants who acquired the Hebrew language early in childhood rather than later in life, suggesting that it is the extent of language proficiency that generates one's sensitivity to being addressed in the masculine or in the feminine. Moreover, when women are addressed in the masculine, their efforts (in terms of time spent on the maths test) decrease and they report feeling that "science is for men" more than when addressed in the feminine. We supplement the analysis with two experiments that explore the roles of general and task-specific stereotypes in generating these effects.

RevDate: 2021-04-08

Khanam R, Fanous IS, Fadhel EN, et al (2021)

Voltage-Gated Calcium Channel Antibody-Induced Oropharyngeal Dysphagia Presenting as a Paraneoplastic Neurological Complication in Breast Cancer.

Cureus, 13(3):e13677.

Paraneoplastic neurologic syndromes (PNS) are a group of disorders characterized by an autoimmune response against the nervous system due to cross-reactivity between malignant and normal neural tissue. The most commonly associated malignancies include small cell lung cancer, ovarian cancer, breast cancer, and lymphoma. Multiple PNS have been reported including paraneoplastic cerebellar degeneration, retinopathy, sensorimotor peripheral neuropathy, encephalopathy, opsoclonus-myoclonus syndrome, and stiff-person syndrome. We report a case of a 67-year-old woman with breast cancer who presented with a history of progressive oropharyngeal dysphagia as a paraneoplastic neurologic complication. She was diagnosed with invasive ductal carcinoma, nuclear grade 3 with moderate peritumoral lymphoid infiltrate. Hormone receptors were weakly positive for estrogen receptor (ER) (H score 15), weakly positive for progesterone receptor (PR) (H score 30), and negative for human epidermal growth factor receptor 2 (HER-2/NEU). The patient underwent a localized segmental mastectomy but declined any further adjuvant treatment. Three years after being diagnosed with invasive ductal carcinoma of the breast, she developed progressive oropharyngeal dysphagia that warranted percutaneous endoscopic gastrostomy (PEG) tube placement. Testing for onconeural antibodies was positive for voltage-gated calcium channel antibody. An extensive workup was negative for any alternative etiology that would explain her neurological symptoms. The patient declined further treatment and eventually succumbed to her illness.

RevDate: 2022-02-21
CmpDate: 2022-02-21

Weaver KD, Isom J, Esnakula A, et al (2021)

Acinic Cell Carcinoma of the Breast: Report of a Case With Immunohistochemical and Next-Generation Sequencing Studies.

International journal of surgical pathology, 29(8):882-886.

Acinic cell carcinoma of the breast is a rare subtype of triple-negative breast cancer that recapitulates the appearance of tumors seen in salivary glands. We present the case of a 42-year-old woman with an irregular, nontender mass above the left nipple during routine obstetric appointment at 24 weeks gestation. She was subsequently diagnosed with triple-negative invasive ductal carcinoma of the left breast, Nottingham grade 3, via core needle biopsy. She was treated with neoadjuvant therapy (doxorubucin and cyclophosphamide) antenatally and paclitaxel in the postpartum period followed by left mastectomy with sentinel node biopsy. The carcinoma in the mastectomy specimen showed a spectrum of morphologic patterns with immunohistochemistry revealing strong positivity for alpha-1-antichymotrypsin, epithelial membrane antigen (EMA), lysozyme, and S100. The histomorphology paired with the immunoprofile led us to the diagnosis of acinic cell carcinoma. We retrospectively performed immunostains in the core biopsy specimen, which demonstrated GATA-3 and DOG-1 positivity. Next-generation sequencing of the postneoadjuvant specimen using a 70-gene panel revealed 2 single-nucleotide variant (SNV) mutations: tumor protein 53 (TP53) (c.747G>T) SNV mutation and rearranged during transfection (RET) (c.2899G>A) SNV mutation.

RevDate: 2022-04-17
CmpDate: 2022-04-04

Hu A, Hong F, Li D, et al (2022)

KDM3B-ETF1 fusion gene downregulates LMO2 via the WNT/β-catenin signaling pathway, promoting metastasis of invasive ductal carcinoma.

Cancer gene therapy, 29(2):215-224.

Breast cancer is the most common malignancy for women, with invasive ductal carcinoma being the largest subtype of breast cancers, accounting for 75-80% of cases. However, the underlying mechanism of invasive ductal carcinoma remains unclear. In this study, we investigate the possible effects KDM3B-ETF1 fusion gene has on breast cancer cell metastasis, invasion and its downstream signaling mediators as revealed from RNA sequence data analysis. As predicted, KDM3B-ETF1 expression was increased in breast cancer tissues and cells. Overexpression of KDM3B-ETF1 in cancer cell lines promoted the growth and invasion of breast cancer cells, while KDM3B-ETF1 knockdown showed the opposite effects on malignant cell growth and invasion both in vivo and in vitro as evidenced by cell counting kit-8, Transwell assay and tumor xenograft in nude mice. On the contrary, LIM Domain Only 2 (LMO2) expression was significantly reduced in breast cancer tissues and cells. According to chromatin immunoprecipitation and Western blot analysis, KDM3B-ETF1 targets LMO2 and reduced the expression of LMO2, leading to an increase in WNT/β-catenin signaling pathway and thus promoting invasion. In conclusion, fusion gene KDM3B-ETF1 inhibits LMO2, activates the Wnt/β-catenin signaling pathway that leads to increased breast cancer cell invasion and metastasis, providing a novel insight into developing therapeutic strategies. These results provide novel insights into the molecular mechanism of invasive ductal carcinomas, which may lead to potential therapeutic targets.

RevDate: 2021-07-19
CmpDate: 2021-07-19

Nash Y, Ganoth A, Borenstein-Auerbach N, et al (2021)

From virus to diabetes therapy: Characterization of a specific insulin-degrading enzyme inhibitor for diabetes treatment.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 35(5):e21374.

Inhibition of insulin-degrading enzyme (IDE) is a possible target for treating diabetes. However, it has not yet evolved into a medical intervention, mainly because most developed inhibitors target the zinc in IDE's catalytic site, potentially causing toxicity to other essential metalloproteases. Since IDE is a cellular receptor for the varicella-zoster virus (VZV), we constructed a VZV-based inhibitor. We computationally characterized its interaction site with IDE showing that the peptide specifically binds inside IDE's central cavity, however, not in close proximity to the zinc ion. We confirmed the peptide's effective inhibition on IDE activity in vitro and showed its efficacy in ameliorating insulin-related defects in types 1 and 2 diabetes mouse models. In addition, we suggest that inhibition of IDE may ameliorate the pro-inflammatory profile of CD4[+] T-cells toward insulin. Together, we propose a potential role of a designed VZV-derived peptide to serve as a selectively-targeted and as an efficient diabetes therapy.

RevDate: 2023-01-30
CmpDate: 2021-04-28

Fayad R, Rojas MV, Partisani M, et al (2021)

EFA6B regulates a stop signal for collective invasion in breast cancer.

Nature communications, 12(1):2198.

Cancer is initiated by somatic mutations in oncogenes or tumor suppressor genes. However, additional alterations provide selective advantages to the tumor cells to resist treatment and develop metastases. Their identification is of paramount importance. Reduced expression of EFA6B (Exchange Factor for ARF6, B) is associated with breast cancer of poor prognosis. Here, we report that loss of EFA6B triggers a transcriptional reprogramming of the cell-to-ECM interaction machinery and unleashes CDC42-dependent collective invasion in collagen. In xenograft experiments, MCF10 DCIS.com cells, a DCIS-to-IDC transition model, invades faster when knocked-out for EFA6B. In addition, invasive and metastatic tumors isolated from patients have lower expression of EFA6B and display gene ontology signatures identical to those of EFA6B knock-out cells. Thus, we reveal an EFA6B-regulated molecular mechanism that controls the invasive potential of mammary cells; this finding opens up avenues for the treatment of invasive breast cancer.

RevDate: 2021-05-31
CmpDate: 2021-05-31

D'Iorio A, Esposito M, Maggi G, et al (2021)

Neuropsychological correlates of prospective memory: A comparison between tremor-dominant Parkinson's disease and cervical dystonia.

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia, 87:156-161.

Cervical Dystonia (CD) and Parkinson's disease, particularly tremor-dominant motor phenotype (TD-PD), showed a selective deficit of time-based prospective memory (TBPM). The two movement disorders are mainly characterized by dysfunctions of basal-ganglia and prefrontal cortex but it is reported that cerebellum also plays a key role in their pathogenesis. These cerebral structures are specifically involved in TBPM rather than in event-based PM (EBPM), but until now no study directly compared these two components of PM between CD and TD-PD patients. Therefore, the present study aimed at investigating if differences in PM functioning between CD and TD-PD patients might exist and if the type of movement disorder moderated the relationship between deficit of PM and deficit of executive functions and retrospective memory. Thirty TD-PD, 27CD patients and 29 healthy subjects (HCs), matched for demographic features, underwent neuropsychological tests for PM, executive functions, retrospective memory and self-rated questionnaires. The three groups did not differ on neuropsychological variables except for TBPM where TD-PD and CD patients performed worse than HCs; moreover, TD-PD performed worse than CD patients. Moderation analysis indicated that the type of movement disorder moderated the relationship between executive dysfunction and TBPM, but not EBPM. In conclusion, selective deficit of TBPM characterizes both CD and TD-PD but it is associated with executive dysfunction only in TD-PD. It might be possible to speculate that the involvement of the cerebellum, responsible for internal timing processes, could explain the impairment of TBPM in both movement disorders. This issue deserves to be explored in future neuroimaging studies.

RevDate: 2026-01-27
CmpDate: 2021-11-19

Nobili S, Mannini A, Parenti A, et al (2021)

Establishment and characterization of a new spontaneously immortalized ER[-]/PR[-]/HER2[+] human breast cancer cell line, DHSF-BR16.

Scientific reports, 11(1):8340.

Invasive ductal carcinoma (IDC) constitutes the most frequent malignant cancer endangering women's health. In this study, a new spontaneously immortalized breast cancer cell line, DHSF-BR16 cells, was isolated from the primary IDC of a 74-years old female patient, treated with neoadjuvant chemotherapy and disease-free 5-years after adjuvant chemotherapy. Primary breast cancer tissue surgically removed was classified as ER[-]/PR[-]/HER2[+], and the same phenotype was maintained by DHSF-BR16 cells. We examined DHSF-BR16 cell morphology and relevant biological and molecular markers, as well as their response to anticancer drugs commonly used for breast cancer treatment. MCF-7 cells were used for comparison purposes. The DHSF-BR16 cells showed the ability to form spheroids and migrate. Furthermore, DHSF-BR16 cells showed a mixed stemness phenotype (i.e. CD44[+]/CD24[-/low]), high levels of cytokeratin 7, moderate levels of cytokeratin 8 and 18, EpCAM and E-Cadh. Transcriptome analysis showed 2071 differentially expressed genes between DHSF-BR16 and MCF-7 cells (logFC > 2, p-adj < 0.01). Several genes were highly upregulated or downregulated in the new cell line (log2 scale fold change magnitude within - 9.6 to + 12.13). A spontaneous immortalization signature, mainly represented by extracellular exosomes-, plasma membrane- and endoplasmic reticulum membrane pathways (GO database) as well as by metabolic pathways (KEGG database) was observed in DHSF-BR16 cells. Also, these cells were more resistant to anthracyclines compared with MCF-7 cells. Overall, DHSF-BR16 cell line represents a relevant model useful to investigate cancer biology, to identify both novel prognostic and drug response predictive biomarkers as well as to assess new therapeutic strategies.

RevDate: 2022-12-07
CmpDate: 2021-07-20

Schaub JR, SC Tang (2021)

Delayed Gemcitabine-Induced Posterior Reversible Encephalopathy Syndrome.

The American journal of the medical sciences, 361(6):795-798.

INTRODUCTION: Posterior reversible encephalopathy syndrome (PRES) is a rare clinical-radiographic syndrome that has been expanding rapidly in the world of clinical medical oncology and hematology. In this article, we provide a unique patient case of delayed gemcitabine-induced PRES.

BRIEF CASE REPORT: A 60-year-old African American female with significant past medical history of ER+/PR+/HER2- invasive ductal carcinoma of the left breast is seen in the medical oncology clinic with vague, mild complaints of lightheadedness. She had progressed on multiple lines of chemotherapy and was ultimately switched to gemcitabine. One month after her third dose of gemcitabine, she developed acute vision loss and soon developed generalized tonic-clonic seizure. Extensive workup was unrevealing other than PRES and she slowly improved with supportive care and withdrawal of the medication.

DISCUSSION: Multiple case reports have described PRES in the context of combination chemotherapy with gemcitabine and a platinum agent in the treatment of gastrointestinal malignancies. With growing evidence, this case is consistent with the hypothesis that gemcitabine as monotherapy has a direct association with PRES. This case highlights a unique aspect in that PRES can occur at a delayed time interval, much further than the expected hours to days after the previous treatment.

RevDate: 2023-09-15
CmpDate: 2021-05-10

He Q, Xue S, Wa Q, et al (2021)

Mining immune-related genes with prognostic value in the tumor microenvironment of breast invasive ductal carcinoma.

Medicine, 100(17):e25715.

The tumor microenvironment (TME) plays an important role in the development of breast cancer. Due to limitations in experimental conditions, the molecular mechanism of TME in breast cancer has not yet been elucidated. With the development of bioinformatics, the study of TME has become convenient and reliable.Gene expression and clinical feature data were downloaded from The Cancer Genome Atlas database and the Molecular Taxonomy of Breast Cancer International Consortium database. Immune scores and stromal scores were calculated using the Estimation of Stromal and Immune Cells in Malignant Tumor Tissues Using Expression Data algorithm. The interaction of genes was examined with protein-protein interaction and co-expression analysis. The function of genes was analyzed by gene ontology enrichment analysis, Kyoto Encyclopedia of Genes and Genomes analysis and gene set enrichment analysis. The clinical significance of genes was assessed with Kaplan-Meier analysis and univariate/multivariate Cox regression analysis.Our results showed that the immune scores and stromal scores of breast invasive ductal carcinoma (IDC) were significantly lower than those of invasive lobular carcinoma. The immune scores were significantly related to overall survival of breast IDC patients and both the immune and stromal scores were significantly related to clinical features of these patients. According to the level of immune/stromal scores, 179 common differentially expressed genes and 5 hub genes with prognostic value were identified. In addition, the clinical significance of the hub genes was validated with data from the molecular taxonomy of breast cancer international consortium database, and gene set enrichment analysis analysis showed that these hub genes were mainly enriched in signaling pathways of the immune system and breast cancer.We identified five immune-related hub genes with prognostic value in the TME of breast IDC, which may partly determine the prognosis of breast cancer and provide some direction for development of targeted treatments in the future.

RevDate: 2021-09-13
CmpDate: 2021-09-13

López-Salazar V, Tapia MS, Tobón-Cornejo S, et al (2021)

Consumption of soybean or olive oil at recommended concentrations increased the intestinal microbiota diversity and insulin sensitivity and prevented fatty liver compared to the effects of coconut oil.

The Journal of nutritional biochemistry, 94:108751.

Diets rich in mono or polyunsaturated fats have been associated with a healthy phenotype, but there is controversial evidence about coconut oil (CO), which is rich in saturated medium-chain fatty acids. Therefore, the purpose of the present work was to study whether different types of oils rich in polyunsaturated (soybean oil, SO), monounsaturated (olive oil, OO), or saturated fatty acids (coconut oil, CO) can regulate the gut microbiota, insulin sensitivity, inflammation, mitochondrial function in wild type and PPARα KO mice. The group that received SO showed the highest microbial diversity, increase in Akkermansia muciniphila, high insulin sensitivity and low grade inflammation, The OO group showed similar insulin sensitivity and insulin signaling than SO, increase in Bifidobacterium, increase in fatty acid oxidation and low grade inflammation. The CO consumption led to the lowest bacterial diversity, a 9-fold increase in the LPS concentration leading to metabolic endotoxemia, hepatic steatosis, increased lipogenesis, highest LDL-cholesterol concentration and the lowest respiratory capacity and fatty acid oxidation in the mitochondria. The absence of PPARα decreased alpha diversity and increased LPS concentration particularly in the CO group, and increased insulin sensitivity in the groups fed SO or OO. These results indicate that consuming mono or polyunsaturated fatty acids produced health benefits at the recommended intake but a high concentration of oils (three times the recommended oil intake in rodents) significantly decreased the microbial alpha-diversity independent of the type of oil.

RevDate: 2024-04-01

Oprean CM, Badau LM, Segarceanu NA, et al (2021)

Unilateral Orbital Metastasis as the Unique Symptom in the Onset of Breast Cancer in a Postmenopausal Woman: Case Report and Review of the Literature.

Diagnostics (Basel, Switzerland), 11(4):.

The orbit represents an unusual metastases site for patients diagnosed with cancer, however, breast cancer is the main cause of metastases at this level. These orbital metastases were discovered in patients with a history of breast cancer as unique or synchronous lesions. We present a rare case of a unique retroocular metastasis as the first initial symptom of a tubulo-lobular mammary carcinoma in a postmenopausal woman. A 57-year-old patient complains of diplopia, diminishing visual acuity, orbital tenderness, slight exophthalmia and ptosis of the left eyelid, with insidious onset. Clinical examination and subsequent investigations revealed a left breast cancer cT2 cN1 pM1 stage IV. Breast conserving surgery was performed on the left breast. Pathological examination with immunohistochemistry staining established the complete diagnostic: pT2pN3aM1 Stage IV breast cancer, luminal B subtype. After two years from the initial breast cancer diagnosis, the patient was diagnosed by the psychiatrist with a depressive disorder and was treated accordingly. Orbital metastases are usually discovered in known breast cancer patients and they are found in the context of a multi-system end-stage disease. Most reports cite that up to 25% of the total orbital metastases cases are discovered before the diagnosis of the primary tumor, as our case did. MRI is the gold standard for evaluating orbital tumors. The ILC histological subtype metastasizes in the orbitals more frequently than invasive ductal carcinoma. The prognosis of patients with orbital metastases is poor. The median survival after diagnosis of orbital metastases from a breast cancer primary is ranging from 22 to 31 months. Overall survival of our patient was 56 months, longer than the median survival reported in literature. Orbital metastases must be taken into account when patients accuse ophthalmologic symptoms even in the absence of a personal history of cancer. Objective examination of every patient that incriminates these types of symptoms is essential, and breast palpation must be made in every clinical setting. Orbital biopsy is necessary for the confirmation of the diagnosis and for an adequate treatment. Although recommendations for management of orbital metastases are controversial, it appears that multidisciplinary treatment of both metastases and primary cancer improves overall survival.

RevDate: 2026-01-27
CmpDate: 2021-05-03

Huang X, Cai S, Wu P, et al (2021)

Clinical and X-ray characteristics for expressions of different receptors in patients with breast cancer.

Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences, 46(3):263-271.

OBJECTIVES: Clarifying the expression of breast cancer receptor is the key to clinical treatment for breast cancer. This study aims to explore the correlation between X-ray and clinical characteristics of 4 molecular subtypes and their receptor types of breast cancer.

METHODS: A total of 439 breast cancer patients who confirmed by pathology and performed X-ray examination were enrolled. The X-ray and clinical characteristics of 4 molecular subtypes and the expression of their receptors were analyzed.

RESULTS: Luminal A type showed the highest proportion of spiculate masses, and the lowest calcification score, showing significant difference with other 3 subtypes (all P<0.001). The age in the human epidermal growth factor 2 (HER2) overexpression type group was older, the proportions of menopause, the calcification score, and the calcification score with 9-12 were higher, the sizes of the tumor were greater in the HER2 overexpression type group than those in the other 3 molecular subtype groups (age P<0.05, the rest P<0.01). The proportions of regular shape, edge indistinct, and high-grade invasive ductal carcinoma in the triple-negative type group were higher than those in the other 3 molecular subtype groups (all P<0.001). The proportions of non-menopausal patients and spiculate tumors in the estrogen receptor (ER) positive and/or progesterone receptor (PR) positive groups were higher than those in both ER and PR negative group (P<0.001 and P=0.001, respectively). The proportions of calcification fraction and high-grade invasive ductal carcinoma were higher, tumor sizes were greater in the HER2 positive group, Ki-67≥20% group than those in the HER2 negative group, Ki-67<20% group, respectively (P<0.001 or P<0.05, respectively).

CONCLUSIONS: Four molecular subtypes of breast cancer and their receptor expressions are correlated with X-ray and clinical characteristics, which can provide a basis for clinical diagnosis and treatment.

RevDate: 2022-12-21
CmpDate: 2021-05-21

Solomon Z, Ginzburg K, Ohry A, et al (2021)

Overwhelmed by the news: A longitudinal study of prior trauma, posttraumatic stress disorder trajectories, and news watching during the COVID-19 pandemic.

Social science & medicine (1982), 278:113956.

RATIONALE: It has been recognized that exposure to mass trauma tends to increase the time spent watching television (TV) news. Yet, research on the effects of this tendency on individuals' well-being yielded inconclusive findings.

OBJECTIVE: The aim of this longitudinal study is to examine the effects of prior trauma and posttraumatic stress disorder (PTSD) on changes in the amount of TV news watching and its effect on subsequent PTSD. More specifically, we examined the interrelations of prior exposure to war captivity, long-term PTSD trajectories, and amount of change TV news watching with PTSD severity during the COVID-19 pandemic, among aging Israeli combat veterans.

METHODS: One-hundred-and-twenty Israeli ex-prisoners of war (ex-POWs) from 1973 Yom Kippur War and 65 matched controls (combat veterans from the same war) were followed up at five points of time: 1991 (T1), 2003 (T2), 2008 (T3), 2015 (T4), and in April-May 2020 (T5), during the outbreak of the COVID-19 pandemic.

RESULTS: Ex-POWs had higher odds of COVID-19 related increase in TV news watching, which, in turn, contributed to PTSD severity at T5. In addition, delayed PTSD trajectory was associated with COVID-19 related increase in TV news watching, which, in turn, contributed to more severe PTSD at T5.

CONCLUSIONS: These findings highlight the negative implications of TV news watching during a mass trauma for traumatized individuals. More specifically, they demonstrate its potential pathogenic role in exacerbating prior PTSD among trauma survivors.

RevDate: 2023-12-13
CmpDate: 2022-03-25

Sethy C, Goutam K, Das B, et al (2021)

Nectin-4 promotes lymphangiogenesis and lymphatic metastasis in breast cancer by regulating CXCR4-LYVE-1 axis.

Vascular pharmacology, 140:106865.

Tumor-induced lymphangiogenesis promotes tumor progression by generating new lymphatic vessels that helps in tumor dissemination to regional lymph nodes and distant sites. Recently, the role of Nectin-4 in cancer metastasis and angiogenesis has been studied, but its role in lymphangiogenesis is unknown. Here, we systematically delineated the role of Nectin-4 in lymphangiogenesis and its regulation in invasive duct carcinoma (IDC). Nectin-4 expression positively correlated with occurrence risk factors associated with breast cancer (alcohol, smoke, lifestyle habit, etc), CXCR4 expression, and LYVE-1-lymphatic vessel density (LVD). LVD was significantly higher in axillary lymph node (ALN) than primary tumor. Depleting Nectin-4, VEGF-C or both attenuated the important lymphangiogenic marker LYVE-1 expression, tube formation, and migration of ALN derived primary cells. Nectin-4 stimulated the expressions of CXCR4 and CXCL12 under hypoxic conditions in ALN derived primary cells. Further, Nectin-4 augmented expressions of lymphatic metastatic markers (e.g. eNOS, TGF-β, CD-105) and MMPs. Induced expressions of Nectin-4 along with other representative metastatic markers were noted in lymph and blood circulating tumor cells (LCTCs and BCTCs) of local and distant metastatic samples. Thus, Nectin-4 displayed a predominant role in promoting tumor-induced lymphangiogenesis and lymphatic metastasis by modulating CXCR4/CXCL12-LYVE-1- axis.

RevDate: 2023-11-07
CmpDate: 2022-02-10

Sottnik JL, Bordeaux EK, Mehrotra S, et al (2021)

Mediator of DNA Damage Checkpoint 1 (MDC1) Is a Novel Estrogen Receptor Coregulator in Invasive Lobular Carcinoma of the Breast.

Molecular cancer research : MCR, 19(8):1270-1282.

Invasive lobular carcinoma (ILC) is the most common special histologic subtype of breast cancer, and nearly all ILC tumors express estrogen receptor alpha (ER). However, clinical and laboratory data suggest ILC are strongly estrogen-driven but not equally antiestrogen-sensitive. We hypothesized ILC-specific ER coregulators mediate ER functions and antiestrogen resistance in ILC, and profiled ER-associated proteins by mass spectrometry. Three ER[+] ILC cell lines (MDA MB 134VI, SUM44PE, and BCK4) were compared with ER[+] invasive ductal carcinoma (IDC) line data, and we examined whether siRNA of identified proteins suppressed ER-driven proliferation in ILC cells. This identified mediator of DNA damage checkpoint 1 (MDC1), a tumor suppressor in DNA damage response (DDR), as a novel ER coregulator in ILC. We confirmed ER:MDC1 interaction was specific to ILC versus IDC cells, and found MDC1 knockdown suppressed ILC cell proliferation and tamoxifen resistance. Using RNA-sequencing, we found in ILC cells MDC1 knockdown broadly dysregulates the ER transcriptome, with ER:MDC1 target genes enriched for promoter hormone response elements. Importantly, our data are inconsistent with MDC1 tumor suppressor functions in DDR, but suggest a novel oncogenic role for MDC1 as an ER coregulator. Supporting this, in breast tumor tissue microarrays, MDC1 protein was frequently low or absent in IDC, but MDC1 loss was rare in ER[+] ILC. ER:MDC1 interaction and MDC1 coregulator functions may underlie ER function in ILC and serve as targets to overcome antiestrogen resistance in ILC. IMPLICATIONS: MDC1 has novel ER coregulator activity in ILC, which may underlie ILC-specific ER functions, estrogen response, and antiestrogen resistance.

RevDate: 2022-07-16
CmpDate: 2022-02-24

Alvarez DR, Ospina A, Barwell T, et al (2021)

The RNA structurome in the asexual blood stages of malaria pathogen plasmodium falciparum.

RNA biology, 18(12):2480-2497.

Plasmodium falciparum is a deadly human pathogen responsible for the devastating disease called malaria. In this study, we measured the differential accumulation of RNA secondary structures in coding and non-coding transcripts from the asexual developmental cycle in P. falciparum in human red blood cells. Our comprehensive analysis that combined high-throughput nuclease mapping of RNA structures by duplex RNA-seq, SHAPE-directed RNA structure validation, immunoaffinity purification and characterization of antisense RNAs collectively measured differentially base-paired RNA regions throughout the parasite's asexual RBC cycle. Our mapping data not only aligned to a diverse pool of RNAs with known structures but also enabled us to identify new structural RNA regions in the malaria genome. On average, approximately 71% of the genes with secondary structures are found to be protein coding mRNAs. The mapping pattern of these base-paired RNAs corresponded to all regions of mRNAs, including the 5' UTR, CDS and 3' UTR as well as the start and stop codons. Histone family genes which are known to form secondary structures in their mRNAs and transcripts from genes which are important for transcriptional and post-transcriptional control, such as the unique plant-like transcription factor family, ApiAP2, DNA-/RNA-binding protein, Alba3 and proteins important for RBC invasion and malaria cytoadherence also showed strong accumulation of duplex RNA reads in various asexual stages in P. falciparum. Intriguingly, our study determined stage-specific, dynamic relationships between mRNA structural contents and translation efficiency in P. falciparum asexual blood stages, suggesting an essential role of RNA structural changes in malaria gene expression programs. Abbreviations: CDS: Coding Sequence; DNA: Deoxyribonucleic Acid; dsRNA: double-stranded RNA; IDC: Intra-erythrocytic Developmental Cycle (IDC); m6A: N6-methyladenosine; mRNA: Messenger RNA; ncRNA: Non-coding RNA; RBC: Red Blood cells; RBP: RNA-Binding Protein; REC: Relative Expression Counts; RNA-seq: RNA-sequencing; RNA: Ribonucleic Acid; RNP: Ribonucleoprotein; RPKM: Reads Per Kilobase of transcript Per Million; rRNA: Ribosomal RNA 16. RUFs: RNAs of Unknown Function; SHAPE: Selective 2'-hydroxyl acylation analysed by primer extension; snoRNA: Small Nucleolar RNA; snRNA: Small Nuclear RNA; SRP-RNA: Signal Recognition Particle RNA; ssRNA: (Single-stranded RNA); TE: Translation Efficiency; tRNA: transfer RNA; UTR: Untranslated Region.

RevDate: 2022-03-09
CmpDate: 2022-03-09

Tsokanos FF, Muley C, Khani S, et al (2021)

Methylglyoxal Drives a Distinct, Nonclassical Macrophage Activation Status.

Thrombosis and haemostasis, 121(11):1464-1475.

Metabolic complications in diabetic patients are driven by a combination of increased levels of nutrients and the presence of a proinflammatory environment. Methylglyoxal (MG) is a toxic byproduct of catabolism and has been strongly associated with the development of such complications. Macrophages are key mediators of inflammatory processes and their contribution to the development of metabolic complications has been demonstrated. However, a direct link between reactive metabolites and macrophage activation has not been demonstrated yet. Here, we show that acute MG treatment activated components of the p38 MAPK pathway and enhanced glycolysis in primary murine macrophages. MG induced a distinct gene expression profile sharing similarities with classically activated proinflammatory macrophages as well as metabolically activated macrophages usually found in obese patients. Transcriptomic analysis revealed a set of 15 surface markers specifically upregulated in MG-treated macrophages, thereby establishing a new set of targets for diagnostic or therapeutic purposes under high MG conditions, including diabetes. Overall, our study defines a new polarization state of macrophages that may specifically link aberrant macrophage activation to reactive metabolites in diabetes.

RevDate: 2022-03-22
CmpDate: 2022-03-22

March DS, Lai KB, Neal T, et al (2022)

Circulating endotoxin and inflammation: associations with fitness, physical activity and the effect of a 6-month programme of cycling exercise during haemodialysis.

Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 37(2):366-374.

BACKGROUND: Intradialytic cycling (IDC) may provide cardiovascular benefits to individuals receiving haemodialysis, but the exact mechanism behind these improvements remains unclear. The primary aim of this study was to investigate the effect of a 6-month programme of IDC on circulating endotoxin (secondary analysis from the CYCLE-HD trial). Secondary aims were to investigate changes in circulating cytokines [interleukin-6 (IL-6), IL-10, tumour necrosis factor-α, C-reactive protein (CRP) and the IL-6:IL-10 ratio] and their associations with physical activity, fitness and cardiovascular outcomes.

METHODS: Participants were randomized to either a 6-month programme of IDC (thrice weekly, moderate intensity cycling at a rating of perceived exertion of 12-14) in addition to usual care (n = 46) or usual care only (control group; n = 46). Outcome measures were obtained at baseline and then again at 6 months.

RESULTS: There was no significant (P = 0.137) difference in circulating endotoxin between groups at 6 months (IDC group: 0.34 ± 0.08 EU/mL; control group: 0.37 ± 0.07 EU/mL). There were no significant between-group differences in any circulating cytokine following the 6-month programme of IDC. Higher levels of physical activity and fitness were associated with lower levels of endotoxin, IL-6, CRP and IL-6:IL-10 ratio.

CONCLUSIONS: Our data show no change in circulating endotoxin or cytokines following a 6-month programme of IDC. However, higher levels of physical activity outside of haemodialysis were associated with lower levels of inflammation.

RevDate: 2024-08-10
CmpDate: 2021-11-01

Hosio M, Urpilainen E, Hautakoski A, et al (2021)

Association of antidiabetic medication and statins with survival from ductal and lobular breast carcinoma in women with type 2 diabetes.

Scientific reports, 11(1):10445.

We investigated the survival of female patients with pre-existing type 2 diabetes (T2D) diagnosed with invasive ductal carcinoma (IDC) and invasive lobular carcinoma (ILC) of breast, in relation to the use of metformin, other antidiabetic medication (ADM) and statins. The study cohort consisted of 3,165 women (2,604 with IDC and 561 with ILC). The cumulative mortality from breast cancer (BC) and from other causes was calculated using the Aalen-Johansen estimator. The cause-specific mortality rates were analysed by Cox models, and adjusted hazard ratios (HRs) were estimated for the use of different medications. No evidence of an association of metformin use with BC mortality was observed in either IDC (HR 0.92, 95% confidence interval [CI] 0.64-1.31) or ILC (HR 0.68, 95% CI 0.32-1.46) patients, when compared to other oral ADMs. The mortality from other causes was found to be lower amongst the IDC patients using metformin (HR 0.64, 95% CI 0.45-0.89), but amongst ILC patients the evidence was inconclusive (HR 1.22, 95% CI 0.64-2.32). Statin use was consistently associated with reduced mortality from BC in IDC patients (HR 0.77, 95% CI 0.62-0.96) and ILC patients (HR 0.59, 95% CI 0.37-0.96), and also mortality from other causes in IDC patients (HR 0.81, 95% CI 0.67-0.96) and in ILC patients (HR 0.66, 95% CI 0.43-1.01). We found no sufficient evidence for the possible effects of metformin and statins on the prognosis of BC being different in the two histological subtypes.

RevDate: 2025-08-21
CmpDate: 2025-08-21

Lei S, Zheng R, Zhang S, et al (2021)

Breast cancer incidence and mortality in women in China: temporal trends and projections to 2030.

Cancer biology & medicine, 18(3):900-909.

OBJECTIVE: Breast cancer was the most common cancer and the fifth cause of cancer deaths among women in China in 2015. The evaluation of the long-term incidence and mortality trends and the prediction of the future burden of breast cancer could provide valuable information for developing prevention and control strategies.

METHODS: The burden of breast cancer in China in 2015 was estimated by using qualified data from 368 cancer registries from the National Central Cancer Registry. Incident cases and deaths in 22 cancer registries were used to assess the time trends from 2000 to 2015. A Bayesian age-period-cohort model was used to project the burden of breast cancer to 2030.

RESULTS: Approximately 303,600 new cases of breast cancer (205,100 from urban areas and 98,500 from rural areas) and 70,400 breast cancer deaths (45,100 from urban areas and 24,500 from rural areas) occurred in China in 2015. Urban regions of China had the highest incidence and mortality rates. The most common histological subtype of breast cancer was invasive ductal carcinoma, followed by invasive lobular carcinoma. The age-standardized incidence and mortality rates increased by 3.3% and 1.0% per year during 2000-2015, and were projected to increase by more than 11% until 2030. Changes in risk and demographic factors between 2015 and 2030 in cases are predicted to increase by approximately 13.3% and 22.9%, whereas deaths are predicted to increase by 13.1% and 40.9%, respectively.

CONCLUSIONS: The incidence and mortality of breast cancer continue to increase in China. There are no signs that this trend will stop by 2030, particularly in rural areas. Effective breast cancer prevention strategies are therefore urgently needed in China.

RevDate: 2022-12-07
CmpDate: 2022-01-12

Kusafuka K, Ito I, Hirata K, et al (2021)

A rare case of high-grade intraductal carcinoma of the upper lip: immunohistochemical and genetic analyses.

Medical molecular morphology, 54(3):281-288.

Although intraductal carcinoma (IDC) of the salivary glands was previously called low-grade cribriform cystadenocarcinoma, it was newly categorized in the 4th version of the World Health Organization classification. We report a case of IDC of the upper lip and examined it immunohistochemically and genetically. The patient was a 48-year-old Japanese female, who noticed a tiny nodule on her left upper lip. Histologically, the tumor cells, which had eosinophilic cytoplasm, exhibited papillary and solid growth patterns, and regions of suspected microinvasion or intraductal spread were also seen at the periphery of the tumor. Small necrotic foci were noted. Immunohistochemically, the tumor cells were diffusely positive for the androgen receptor, CK19, CK5/6, EGFR, and SOX10, whereas they were focally positive for GCDFP-15, S-100 protein, and mammaglobin. The tumor nests were surrounded by alpha-smooth muscle actin-p63-/calponin-/CK14-positive myoepithelial cells. The Ki-67 labeling index was 51.2%. Genetic analysis showed no evidence of the TRIM27-RET or NCOA4-RET fusion gene. We finally diagnosed the tumor as a high-grade mixed intercalated duct/apocrine-type IDC of the upper lip. IDC of the minor salivary glands is exceedingly rare. We discuss diagnostic problems associated with minor salivary gland lesions, and the "basal-like" phenotype of this case.

RevDate: 2025-01-15
CmpDate: 2021-12-31

Dinca SC, Greiner D, Weidenfeld K, et al (2021)

Novel mechanism for OSM-promoted extracellular matrix remodeling in breast cancer: LOXL2 upregulation and subsequent ECM alignment.

Breast cancer research : BCR, 23(1):56.

BACKGROUND: Invasive ductal carcinoma (IDC) is a serious problem for patients as it metastasizes, decreasing 5-year patient survival from > 95 to ~ 27%. The breast tumor microenvironment (TME) is often saturated with proinflammatory cytokines, such as oncostatin M (OSM), which promote epithelial-to-mesenchymal transitions (EMT) in IDC and increased metastasis. The extracellular matrix (ECM) also plays an important role in promoting invasive and metastatic potential of IDC. Specifically, the reorganization and alignment of collagen fibers in stromal ECM leads to directed tumor cell motility, which promotes metastasis. Lysyl oxidase like-2 (LOXL2) catalyzes ECM remodeling by crosslinking of collagen I in the ECM. We propose a novel mechanism whereby OSM induces LOXL2 expression, mediating stromal ECM remodeling of the breast TME.

METHODS: Bioinformatics was utilized to determine survival and gene correlation in patients. IDC cell lines were treated with OSM (also IL-6, LIF, and IL-1β) and analyzed for LOXL2 expression by qRT-PCR and immunolabelling techniques. Collagen I contraction assays, 3D invasion assays, and confocal microscopy were performed with and without LOXL2 inhibition to determine the impact of OSM-induced LOXL2 on the ECM.

RESULTS: Our studies demonstrate that IDC patients with high LOXL2 and OSM co-expression had worse rates of metastasis-free survival than those with high levels of either, individually, and LOXL2 expression is positively correlated to OSM/OSM receptor (OSMR) expression in IDC patients. Furthermore, human IDC cells treated with OSM resulted in a significant increase in LOXL2 mRNA, which led to upregulated protein expression of secreted, glycosylated, and enzymatically active LOXL2. The expression of LOXL2 in IDC cells did not affect OSM-promoted EMT, and LOXL2 was localized to the cytoplasm and/or secreted. OSM-induced LOXL2 promoted an increase in ECM collagen I fiber crosslinking, which led to significant fiber alignment between cells and increased IDC cell invasion.

CONCLUSIONS: Aligned collagen fibers in the ECM provide pathways for tumor cells to migrate more easily through the stroma to nearby vasculature and tissue. These results provide a new paradigm through which proinflammatory cytokine OSM promotes tumor progression. Understanding the nuances in IDC metastasis will lead to better potential therapeutics to combat against the possibility.

RevDate: 2026-01-27
CmpDate: 2022-03-18

Giroud M, Tsokanos FF, Caratti G, et al (2021)

HAND2 is a novel obesity-linked adipogenic transcription factor regulated by glucocorticoid signalling.

Diabetologia, 64(8):1850-1865.

AIMS/HYPOTHESIS: Adipocytes are critical cornerstones of energy metabolism. While obesity-induced adipocyte dysfunction is associated with insulin resistance and systemic metabolic disturbances, adipogenesis, the formation of new adipocytes and healthy adipose tissue expansion are associated with metabolic benefits. Understanding the molecular mechanisms governing adipogenesis is of great clinical potential to efficiently restore metabolic health in obesity. Here we investigate the role of heart and neural crest derivatives-expressed 2 (HAND2) in adipogenesis.

METHODS: Human white adipose tissue (WAT) was collected from two cross-sectional studies of 318 and 96 individuals. In vitro, for mechanistic experiments we used primary adipocytes from humans and mice as well as human multipotent adipose-derived stem (hMADS) cells. Gene silencing was performed using siRNA or genetic inactivation in primary adipocytes from loxP and or tamoxifen-inducible Cre-ERT2 mouse models with Cre-encoding mRNA or tamoxifen, respectively. Adipogenesis and adipocyte metabolism were measured by Oil Red O staining, quantitative PCR (qPCR), microarray, glucose uptake assay, western blot and lipolysis assay. A combinatorial RNA sequencing (RNAseq) and ChIP qPCR approach was used to identify target genes regulated by HAND2. In vivo, we created a conditional adipocyte Hand2 deletion mouse model using Cre under control of the Adipoq promoter (Hand2[AdipoqCre]) and performed a large panel of metabolic tests.

RESULTS: We found that HAND2 is an obesity-linked white adipocyte transcription factor regulated by glucocorticoids that was necessary but insufficient for adipocyte differentiation in vitro. In a large cohort of humans, WAT HAND2 expression was correlated to BMI. The HAND2 gene was enriched in white adipocytes compared with brown, induced early in differentiation and responded to dexamethasone (DEX), a typical glucocorticoid receptor (GR, encoded by NR3C1) agonist. Silencing of NR3C1 in hMADS cells or deletion of GR in a transgenic conditional mouse model results in diminished HAND2 expression, establishing that adipocyte HAND2 is regulated by glucocorticoids via GR in vitro and in vivo. Furthermore, we identified gene clusters indirectly regulated by the GR-HAND2 pathway. Interestingly, silencing of HAND2 impaired adipocyte differentiation in hMADS and primary mouse adipocytes. However, a conditional adipocyte Hand2 deletion mouse model using Cre under control of the Adipoq promoter did not mirror these effects on adipose tissue differentiation, indicating that HAND2 was required at stages prior to Adipoq expression.

CONCLUSIONS/INTERPRETATION: In summary, our study identifies HAND2 as a novel obesity-linked adipocyte transcription factor, highlighting new mechanisms of GR-dependent adipogenesis in humans and mice.

DATA AVAILABILITY: Array data have been submitted to the GEO database at NCBI (GSE148699).

RevDate: 2022-01-17
CmpDate: 2022-01-17

de Araújo RA, Cordero da Luz FA, da Costa Marinho E, et al (2021)

Operable breast cancer: How not to worsen the prognosis, especially in triple negative and stage II tumors.

Surgical oncology, 38:101596.

INTRODUCTION: Oncological surgery must follow some fundamental principles to be truly curative, one of which is the resection of the tumor with surgical margins free of neoplasia. In breast cancer, surgery with positive margins should be expanded immediately. There are probably different intensities, between the stages and molecular subtypes of operable breast cancer, of worsening prognosis due to the surgical margin compromised by the neoplasia in women not submitted to the necessary enlargement of the positive surgical margin. MATERIALS AND.

METHODS: Seven hundred and forty-seven women with invasive ductal carcinoma of the breast, analyzing anatomical-pathological information, types of surgery, molecular subtypes, and the presence or absence of the surgical margin compromised by neoplasia.

RESULTS: Sixty-one (8.2%) patients had positive surgical margin, causing 2.85 times more risk of locoregional relapse compared to negative surgical margin by multivariate analysis. In subgroup analysis, among stages I, II and III, stage II was the most negatively impacted, with those patients presenting 2.42 times more risk of distant metastasis and 4.94 times more risk of locoregional relapses compared to negative surgical margin by multivariate analysis. Among the molecular subtypes, Triple Negative tumors with a positive surgical margin had 3.56 times more risk of death, 4.98 times more risk of distant metastasis and 5.55 times more risk of locoregional relapse compared to negative surgical margin by multivariate analysis.

CONCLUSIONS: The positive surgical margin, especially in Stage II and Triple-Negative breast cancer patients negatively impact the patient's evolution, increasing risk of distant metastasis and death.

RevDate: 2021-11-02
CmpDate: 2021-10-14

Egea V, Kessenbrock K, Lawson D, et al (2021)

Let-7f miRNA regulates SDF-1α- and hypoxia-promoted migration of mesenchymal stem cells and attenuates mammary tumor growth upon exosomal release.

Cell death & disease, 12(6):516.

Bone marrow-derived human mesenchymal stem cells (hMSCs) are recruited to damaged or inflamed tissues where they contribute to tissue repair. This multi-step process involves chemokine-directed invasion of hMSCs and on-site release of factors that influence target cells or tumor tissues. However, the underlying molecular mechanisms are largely unclear. Previously, we described that microRNA let-7f controls hMSC differentiation. Here, we investigated the role of let-7f in chemotactic invasion and paracrine anti-tumor effects. Incubation with stromal cell-derived factor-1α (SDF-1α) or inflammatory cytokines upregulated let-7f expression in hMSCs. Transfection of hMSCs with let-7f mimics enhanced CXCR4-dependent invasion by augmentation of pericellular proteolysis and release of matrix metalloproteinase-9. Hypoxia-induced stabilization of the hypoxia-inducible factor 1 alpha in hMSCs promoted cell invasion via let-7f and activation of autophagy. Dependent on its endogenous level, let-7f facilitated hMSC motility and invasion through regulation of the autophagic flux in these cells. In addition, secreted let-7f encapsulated in exosomes was increased upon upregulation of endogenous let-7f by treatment of the cells with SDF-1α, hypoxia, or induction of autophagy. In recipient 4T1 tumor cells, hMSC-derived exosomal let-7f attenuated proliferation and invasion. Moreover, implantation of 3D spheroids composed of hMSCs and 4T1 cells into a breast cancer mouse model demonstrated that hMSCs overexpressing let-7f inhibited tumor growth in vivo. Our findings provide evidence that let-7f is pivotal in the regulation of hMSC invasion in response to inflammation and hypoxia, suggesting that exosomal let-7f exhibits paracrine anti-tumor effects.

RevDate: 2026-01-27
CmpDate: 2021-06-01

Georgiadi A, Lopez-Salazar V, Merahbi RE, et al (2021)

Orphan GPR116 mediates the insulin sensitizing effects of the hepatokine FNDC4 in adipose tissue.

Nature communications, 12(1):2999.

The proper functional interaction between different tissues represents a key component in systemic metabolic control. Indeed, disruption of endocrine inter-tissue communication is a hallmark of severe metabolic dysfunction in obesity and diabetes. Here, we show that the FNDC4-GPR116, liver-white adipose tissue endocrine axis controls glucose homeostasis. We found that the liver primarily controlled the circulating levels of soluble FNDC4 (sFNDC4) and lowering of the hepatokine FNDC4 led to prediabetes in mice. Further, we identified the orphan adhesion GPCR GPR116 as a receptor of sFNDC4 in the white adipose tissue. Upon direct and high affinity binding of sFNDC4 to GPR116, sFNDC4 promoted insulin signaling and insulin-mediated glucose uptake in white adipocytes. Indeed, supplementation with FcsFNDC4 in prediabetic mice improved glucose tolerance and inflammatory markers in a white-adipocyte selective and GPR116-dependent manner. Of note, the sFNDC4-GPR116, liver-adipose tissue axis was dampened in (pre) diabetic human patients. Thus our findings will now allow for harnessing this endocrine circuit for alternative therapeutic strategies in obesity-related pre-diabetes.

RevDate: 2022-02-02
CmpDate: 2022-02-02

Hoshina H, Takei H, Nakamura M, et al (2021)

Carcinomatous cirrhosis as radiographically occult liver metastases of breast cancer: A systematic literature review.

Cancer treatment and research communications, 28:100388.

In the present study, we aimed to clarify features of carcinomatous cirrhosis from breast cancer presenting as refractory transudate ascites and acute liver failure. In our systematic literature review, we identified 26 studies and 31 cases including our case of this rare condition. Our patient was a 49-year-old woman with a history of ascites and liver failure for the past 4 years and currently being treated for invasive ductal breast cancer. On radiography, she had occult liver metastases that were confirmed using laparoscopic liver biopsy. In the 31 cases, data on the reported year, age, type of primary breast cancer, time from breast cancer diagnosis, presence of ascites and/or varices, liver biopsy, diagnostic modalities, outcomes, and survival were documented and analyzed. All cases were reported during 1984-2020, with a mean patient age of 52.9 years. Eighteen patients (58.1%) were diagnosed with ductal breast cancer. Twenty-two patients (70.9%) had ascites. All patients had gradual progression to liver dysfunction. The following tests were performed: computed tomography (77.4%); ultrasound (58.0%); liver biopsy (100%); postmortem biopsy (35.5%), transjugular liver biopsy (32.3%), and laparoscopic liver biopsy (3.2%). Outcomes were reported for 29 patients, of whom 24 (82.3%) died after 1 day to 16 months. Invasive ductal carcinoma was the most common histological type; however, invasive lobular carcinoma was more frequent (32.3%) than its reported incidence in the breast. Carcinomatous cirrhosis has poor prognosis at relatively rash and is difficult to diagnose with usual modalities. It may be associated with E-cadherin loss or CD44 pronouncement.

RevDate: 2026-01-27
CmpDate: 2021-06-14

Amit I, Iancu O, Levy-Jurgenson A, et al (2021)

CRISPECTOR provides accurate estimation of genome editing translocation and off-target activity from comparative NGS data.

Nature communications, 12(1):3042.

Controlling off-target editing activity is one of the central challenges in making CRISPR technology accurate and applicable in medical practice. Current algorithms for analyzing off-target activity do not provide statistical quantification, are not sufficiently sensitive in separating signal from noise in experiments with low editing rates, and do not address the detection of translocations. Here we present CRISPECTOR, a software tool that supports the detection and quantification of on- and off-target genome-editing activity from NGS data using paired treatment/control CRISPR experiments. In particular, CRISPECTOR facilitates the statistical analysis of NGS data from multiplex-PCR comparative experiments to detect and quantify adverse translocation events. We validate the observed results and show independent evidence of the occurrence of translocations in human cell lines, after genome editing. Our methodology is based on a statistical model comparison approach leading to better false-negative rates in sites with weak yet significant off-target activity.

RevDate: 2026-05-18
CmpDate: 2021-08-09

Markus HS, Egle M, Croall ID, et al (2021)

PRESERVE: Randomized Trial of Intensive Versus Standard Blood Pressure Control in Small Vessel Disease.

Stroke, 52(8):2484-2493.

[Figure: see text].

RevDate: 2024-04-02
CmpDate: 2021-10-28

Brock EJ, Jackson RM, Boerner JL, et al (2021)

Sprouty4 negatively regulates ERK/MAPK signaling and the transition from in situ to invasive breast ductal carcinoma.

PloS one, 16(5):e0252314.

Breast ductal carcinoma in situ (DCIS) is a non-obligate precursor of invasive ductal carcinoma (IDC). It is still unclear which DCIS will become invasive and which will remain indolent. Patients often receive surgery and radiotherapy, but this early intervention has not produced substantial decreases in late-stage disease. Sprouty proteins are important regulators of ERK/MAPK signaling and have been studied in various cancers. We hypothesized that Sprouty4 is an endogenous inhibitor of ERK/MAPK signaling and that its loss/reduced expression is a mechanism by which DCIS lesions progress toward IDC, including triple-negative disease. Using immunohistochemistry, we found reduced Sprouty4 expression in IDC patient samples compared to DCIS, and that ERK/MAPK phosphorylation had an inverse relationship to Sprouty4 expression. These observations were reproduced using a 3D culture model of disease progression. Knockdown of Sprouty4 in MCF10.DCIS cells increased ERK/MAPK phosphorylation as well as their invasive capability, while overexpression of Sprouty4 in MCF10.CA1d IDC cells reduced ERK/MAPK phosphorylation, invasion, and the aggressive phenotype exhibited by these cells. Immunofluorescence experiments revealed reorganization of the actin cytoskeleton and relocation of E-cadherin back to the cell surface, consistent with the restoration of adherens junctions. To determine whether these effects were due to changes in ERK/MAPK signaling, MEK1/2 was pharmacologically inhibited in IDC cells. Nanomolar concentrations of MEK162/binimetinib restored an epithelial-like phenotype and reduced pericellular proteolysis, similar to Sprouty4 overexpression. From these data we conclude that Sprouty4 acts to control ERK/MAPK signaling in DCIS, thus limiting the progression of these premalignant breast lesions.

RevDate: 2022-09-02
CmpDate: 2022-02-10

Hesterberg AB, Gordetsky JB, PJ Hurley (2021)

Cribriform Prostate Cancer: Clinical Pathologic and Molecular Considerations.

Urology, 155:47-54.

Intraductal cribriform (IDC) and invasive cribriform morphologies are associated with worse prostate cancer outcomes. Limited retrospective studies have associated IDC and cribriform morphology with germline mutations in DNA repair genes, particularly BRCA2. These findings, which prompted the National Comprehensive Cancer Network (NCCN) Guidelines for Prostate Cancer and Genetic/Familial High- Risk Assessment to consider germline testing for individuals with IDC/cribriform histology, have been questioned in a recent prospective study. A deepened understanding of the molecular mechanisms driving disease aggressiveness in cribriform morphology is critical to provide more clarity in clinical decision making. This review summarizes the current understanding of IDC and cribriform prostate cancer, with an emphasis on clinical outcomes and molecular alterations.

RevDate: 2022-02-02
CmpDate: 2022-01-17

Salles DC, Vidotto T, Faisal FA, et al (2021)

Assessment of MYC/PTEN Status by Gene-Protein Assay in Grade Group 2 Prostate Biopsies.

The Journal of molecular diagnostics : JMD, 23(8):1030-1041.

This study leveraged a gene-protein assay to assess MYC and PTEN status at prostate cancer biopsy and examined the association with adverse outcomes after surgery. MYC gain and PTEN loss were simultaneously assessed by chromogenic in situ hybridization and immunohistochemistry, respectively, using 277 Grade Group 2 needle biopsies that were followed by prostatectomy. The maximal size of cribriform Gleason pattern 4 carcinoma (CRIB), the presence of intraductal carcinoma (IDC), and percentage of Gleason pattern 4 carcinoma at biopsy were also annotated. MYC gain or PTEN loss was present in 19% and 18% of biopsies, respectively, whereas both alterations were present in 9% of biopsies. Tumors with one or both alterations were significantly more likely to have non-organ-confined disease (NOCD) at radical prostatectomy. In logistic regression models, including clinical stage, tumor volume on biopsy, and presence of CRIB/IDC, cases with MYC gain and PTEN loss remained at higher risk for NOCD (odds ratio, 6.23; 95% CI, 1.74-24.55; P = 0.005). The area under the curve for a baseline model using CAPRA variables (age, prostate-specific antigen, percentage of core involvement, clinical stage) was increased from 0.68 to 0.69 with inclusion of CRIB/IDC status and to 0.75 with MYC/PTEN status. Dual MYC/PTEN status can be assessed in a single slide and is independently associated with increased risk of NOCD for Grade Group 2 biopsies.

RevDate: 2024-04-05
CmpDate: 2022-04-06

Zhao E, Stone MR, Ren X, et al (2021)

Spatial transcriptomics at subspot resolution with BayesSpace.

Nature biotechnology, 39(11):1375-1384.

Recent spatial gene expression technologies enable comprehensive measurement of transcriptomic profiles while retaining spatial context. However, existing analysis methods do not address the limited resolution of the technology or use the spatial information efficiently. Here, we introduce BayesSpace, a fully Bayesian statistical method that uses the information from spatial neighborhoods for resolution enhancement of spatial transcriptomic data and for clustering analysis. We benchmark BayesSpace against current methods for spatial and non-spatial clustering and show that it improves identification of distinct intra-tissue transcriptional profiles from samples of the brain, melanoma, invasive ductal carcinoma and ovarian adenocarcinoma. Using immunohistochemistry and an in silico dataset constructed from scRNA-seq data, we show that BayesSpace resolves tissue structure that is not detectable at the original resolution and identifies transcriptional heterogeneity inaccessible to histological analysis. Our results illustrate BayesSpace's utility in facilitating the discovery of biological insights from spatial transcriptomic datasets.

RevDate: 2022-04-28
CmpDate: 2021-11-22

Badak B, Aykanat NEB, Kacar S, et al (2021)

Effects of astaxanthin on metastasis suppressors in ductal carcinoma. A preliminary study.

Annali italiani di chirurgia, 92:565-574.

BACKGROUND: Breast cancer (BC) is a major public health problem diagnosed in more than 2 million women worldwide in 2018, causing more than 600,000 deaths. 90% of deaths due to breast cancer are caused by metastasis. Metastasis is a complex process that is divided into several steps, including separation of tumor cells from the primary tumor, invasion, cell migration, intravasation, vasculature survival, extravasation, and colonization of the secondary site. Astaxanthin (AXT) is a marine-based ketocarotenoid that has many different potential functions such as anti-oxidant, anti-inflammatory and oxidative stress-reducing properties to potentially reduce the incidence of cancer or inhibit the expansion of tumor cells. This study aims to investigate the effects of astaxanthin as a new metastasis inhibitor on T47D human invasive ductal carcinoma breast cancer cell.

MATERIAL AND METHODS: To investigate the effects of the astaxanthin as a new metastasis inhibitor on T47D cell, expression levels of anti-maspin, anti-Kai1, anti-BRMS1, and anti-MKK4 were examined by western blot. Also, we evaluated differences of these suppressors expression levels in tissue sections of 10 patients diagnosed with in situ and invasive ductal carcinoma by immunohistochemistry method.

RESULT: 250 μM astaxanthin increased the activation of all metastasis suppressing proteins. Also, these metastasis suppressors showed higher expression in invasive ductal carcinoma tissues than in situ ductal carcinoma patients.

CONCLUSION: We think that astaxanthin is a promising therapeutic agent for invasive ductal carcinoma patients. The effects of astaxanthin on metastasis in breast cancer should be investigated further based on these results.

KEY WORDS: Breast, cancer, metastasis.

RevDate: 2022-02-15
CmpDate: 2022-02-15

Maitre T, Ok V, Calin R, et al (2021)

Pyogenic lung abscess in an infectious disease unit: a 20-year retrospective study.

Therapeutic advances in respiratory disease, 15:17534666211003012.

BACKGROUND: Pyogenic lung abscesses are rare and poorly described infections. This study aimed to describe their prognostic factors.

METHODS: We retrospectively included all patients hospitalized between 1 January 1998 and 1 June 2018, with an International Classification of Diseases, version 10 (IDC-10) diagnosis of pyogenic lung abscess, from the Diamm based medical records (Micro6, Nancy, France). Parasitic, fungal, or mycobacterial lung abscesses were excluded.

RESULTS: A total of 64 patients were included. Abscesses were associated with immunosuppression in 28 patients, including HIV infection and immunosuppressive therapy for eight and 12 patients, respectively. Bacterial identification was obtained for 36 patients. Nine patients (14%) developed lung abscesses after hematogenous dissemination. They differed from bronchogenic abscesses by their younger age (p = 0.03), the absence of smoking or emphysema (p = 0.05), Staphylococcus aureus (p = 0.001) or Streptococcus spp. (p = 0.05) isolation, and the smaller size of their abscess (p = 0.02). Overall, evolution was marked by radiological sequelae (46.9%), relapse (12.5%), and death (4.8%). Radiological sequelae occurred more frequently during the course of bronchogenic abscesses (p = 0.02), particularly when they spontaneously discharged (p = 0.04). Relapses were more frequent in patients with emphysema (p = 0.04) and when Haemophilus influenzae was isolated (p = 0.04). In multivariate analysis, poor outcomes, including death, sequelae, and relapse occurred more frequently in patients who had bronchogenic abscess (p = 0.02), and in those who received antibiotics during less than 6 weeks (p = 0.05).

CONCLUSION: A duration of antibiotic treatment of less than 6 weeks and bronchogenic presentation were globally associated with poor outcome of pyogenic lung abscesses. These data should be considered when proposing guidelines for the care of pyogenic lung abscesses.The reviews of this paper are available via the supplemental material section.

RevDate: 2021-09-27
CmpDate: 2021-09-27

Icht M, Zukerman G, Ben-Itzchak E, et al (2021)

Keep it simple: Identification of basic versus complex emotions in spoken language in individuals with autism spectrum disorder without intellectual disability: A meta-analysis study.

Autism research : official journal of the International Society for Autism Research, 14(9):1948-1964.

Daily functioning involves identifying emotions in spoken language, a fundamental aspect of social interactions. To date, there is inconsistent evidence in the literature on whether individuals with autism spectrum disorder without intellectual disability (ASD-without-ID) experience difficulties in identification of spoken emotions. We conducted a meta-analysis (literature search following the PRISMA guidelines), with 26 data sets (taken from 23 peer-reviewed journal articles) comparing individuals with ASD-without-ID (N = 614) and typically-developed (TD) controls (N = 640), from nine countries and in seven languages (published until February 2020). In our analyses there was no sufficient evidence to suggest that individuals with HF-ASD differ from matched controls in the identification of simple prosodic emotions (e.g., sadness, happiness). However, individuals with ASD-without-ID were found to perform significantly worse than controls in identification of complex prosodic emotions (e.g., envy and boredom). The level of the semantic content of the stimuli presented (e.g., sentences vs. strings of digits) was not found to have an impact on the results. In conclusion, the difference in findings between simple and complex emotions calls for a new-look on emotion processing in ASD-without-ID. Intervention programs may rely on the intact abilities of individuals with ASD-without-ID to process simple emotions and target improved performance with complex emotions. LAY SUMMARY: Individuals with autism spectrum disorder without intellectual disability (ASD-without-ID) do not differ from matched controls in the identification of simple prosodic emotions (e.g., sadness, happiness). However, they were found to perform significantly worse than controls in the identification of complex prosodic emotions (e.g., envy, boredom). This was found in a meta-analysis of 26 data sets with 1254 participants from nine countries and in seven languages. Intervention programs may rely on the intact abilities of individuals with ASD-without-ID to process simple emotions.

RevDate: 2026-01-27
CmpDate: 2021-10-20

Bin Kanner Y, Ganoth A, Y Tsfadia (2021)

Extracellular mutation induces an allosteric effect across the membrane and hampers the activity of MRP1 (ABCC1).

Scientific reports, 11(1):12024.

Dynamic conformational changes play a major role in the function of proteins, including the ATP-Binding Cassette (ABC) transporters. Multidrug Resistance Protein 1 (MRP1) is an ABC exporter that protects cells from toxic molecules. Overexpression of MRP1 has been shown to confer Multidrug Resistance (MDR), a phenomenon in which cancer cells are capable to defend themselves against a broad variety of drugs. In this study, we used varied computational techniques to explore the unique F583A mutation that is known to essentially lock the transporter in a low-affinity solute binding state. We demonstrate how macro-scale conformational changes affect MRP1's stability and dynamics, and how these changes correspond to micro-scale structural perturbations in helices 10-11 and the nucleotide-binding domains (NBDs) of the protein in regions known to be crucial for its ATPase activity. We demonstrate how a single substitution of an outward-facing aromatic amino acid causes a long-range allosteric effect that propagates across the membrane, ranging from the extracellular ECL5 loop to the cytoplasmic NBD2 over a distance of nearly 75 Å, leaving the protein in a non-functional state, and provide the putative allosteric pathway. The identified allosteric structural pathway is not only in agreement with experimental data but enhances our mechanical understanding of MRP1, thereby facilitating the rational design of chemosensitizers toward the success of chemotherapy treatments.

RevDate: 2022-10-07
CmpDate: 2022-03-11

Fortunato A, Mallo D, Rupp SM, et al (2021)

A new method to accurately identify single nucleotide variants using small FFPE breast samples.

Briefings in bioinformatics, 22(6):.

Most tissue collections of neoplasms are composed of formalin-fixed and paraffin-embedded (FFPE) excised tumor samples used for routine diagnostics. DNA sequencing is becoming increasingly important in cancer research and clinical management; however it is difficult to accurately sequence DNA from FFPE samples. We developed and validated a new bioinformatic pipeline to use existing variant-calling strategies to robustly identify somatic single nucleotide variants (SNVs) from whole exome sequencing using small amounts of DNA extracted from archival FFPE samples of breast cancers. We optimized this strategy using 28 pairs of technical replicates. After optimization, the mean similarity between replicates increased 5-fold, reaching 88% (range 0-100%), with a mean of 21.4 SNVs (range 1-68) per sample, representing a markedly superior performance to existing tools. We found that the SNV-identification accuracy declined when there was less than 40 ng of DNA available and that insertion-deletion variant calls are less reliable than single base substitutions. As the first application of the new algorithm, we compared samples of ductal carcinoma in situ of the breast to their adjacent invasive ductal carcinoma samples. We observed an increased number of mutations (paired-samples sign test, P < 0.05), and a higher genetic divergence in the invasive samples (paired-samples sign test, P < 0.01). Our method provides a significant improvement in detecting SNVs in FFPE samples over previous approaches.

RevDate: 2021-10-01
CmpDate: 2021-10-01

Gnangnon B, Duraisingh MT, CO Buckee (2021)

Deconstructing the parasite multiplication rate of Plasmodium falciparum.

Trends in parasitology, 37(10):922-932.

Epidemiological indicators describing population-level malaria transmission dynamics are widely used to guide policy recommendations. However, the determinants of malaria outcomes within individuals are still poorly understood. This conceptual gap partly reflects the fact that there are few indicators that robustly predict the trajectory of individual infections or clinical outcomes. The parasite multiplication rate (PMR) is a widely used indicator for the Plasmodium intraerythrocytic development cycle (IDC), for example, but its relationship to clinical outcomes is complex. Here, we review its calculation and use in P. falciparum malaria research, as well as the parasite and host factors that impact it. We also provide examples of metrics that can help to link within-host dynamics to malaria clinical outcomes when used alongside the PMR.

RevDate: 2026-07-28
CmpDate: 2021-10-26

Akhavan AA, Wirtz EC, Ollila DW, et al (2021)

An Unusual Case of BIA-ALCL Associated with Prolonged/Complicated Biocell-Textured Expander, followed by Smooth Round Breast Implant Exposure, and Concurrent Use of Adalimumab.

Plastic and reconstructive surgery, 148(2):299-303.

Breast implant-associated anaplastic large-cell lymphoma (BIA-ALCL) is a malignancy associated with textured breast implants. BIA-ALCL is typically restricted to the periprosthetic capsule, presenting as a unilateral recurrent seroma years after placement of a textured breast implant. Current estimates suggest an incidence of one in 3300 for patients with Allergan Biocell textured implants. As of February 6, 2019, U.S. Medical Device Reporting associated with BIA-ALCL showed 457 unique cases of BIA-ALCL, with 24 "unverified and potentially inaccurate" cases associated with a nontextured implant. As of February of 2019, there were 688 reported cases to date worldwide. To date, there are no published case reports of BIA-ALCL associated exclusively with smooth implants or with smooth implants after textured expanders, and there has been no reported smooth-only case in any registry, database, or journal worldwide. The authors present a case of BIA-ALCL associated with smooth round implants and textured tissue expanders. A 56-year-old woman was treated for left stage IIA invasive ductal carcinoma with bilateral mastectomies and immediate reconstruction with bilateral subpectoral textured tissue expanders. She underwent exchange to Mentor smooth-round implants, and completed adjuvant chemotherapy. Magnetic resonance imaging and examination 4.5 years after implant placement showed no abnormal findings. The patient had left breast trauma 5 years following implant placement while taking adalimumab, and developed an open wound requiring explantation. A recurrent seroma developed, and tested positive for BIA-ALCL on cytology. Surgical pathologic examination after total capsulectomy demonstrated stage IA BIA-ALCL. To the authors' knowledge, this is the first case report of BIA-ALCL in a patient with textured expanders followed by prolonged exposure to smooth round implants.

RevDate: 2021-07-28
CmpDate: 2021-07-28

Nakamura T, Okabe K, Hirayama S, et al (2021)

Structure of the mammalian adenine DNA glycosylase MUTYH: insights into the base excision repair pathway and cancer.

Nucleic acids research, 49(12):7154-7163.

Mammalian MutY homologue (MUTYH) is an adenine DNA glycosylase that excises adenine inserted opposite 8-oxoguanine (8-oxoG). The inherited variations in human MUTYH gene are known to cause MUTYH-associated polyposis (MAP), which is associated with colorectal cancer. MUTYH is involved in base excision repair (BER) with proliferating cell nuclear antigen (PCNA) in DNA replication, which is unique and critical for effective mutation-avoidance. It is also reported that MUTYH has a Zn-binding motif in a unique interdomain connector (IDC) region, which interacts with Rad9-Rad1-Hus1 complex (9-1-1) in DNA damage response, and with apurinic/apyrimidinic endonuclease 1 (APE1) in BER. However, the structural basis for the BER pathway by MUTYH and its interacting proteins is unclear. Here, we determined the crystal structures of complexes between mouse MUTYH and DNA, and between the C-terminal domain of mouse MUTYH and human PCNA. The structures elucidated the repair mechanism for the A:8-oxoG mispair including DNA replication-coupled repair process involving MUTYH and PCNA. The Zn-binding motif was revealed to comprise one histidine and three cysteine residues. The IDC, including the Zn-binding motif, is exposed on the MUTYH surface, suggesting its interaction modes with 9-1-1 and APE1, respectively. The structure of MUTYH explains how MAP mutations perturb MUTYH function.

RevDate: 2023-11-02
CmpDate: 2021-11-16

Nkadimeng MV, Makombe G, Mapiye O, et al (2021)

A gross margin analysis for Nguni cattle farmers in Limpopo Province, South Africa.

PloS one, 16(6):e0253657.

Factors such as increases in population, urbanization, growth in per capita income and changes in consumer taste and preferences are causing gradual increases in livestock product consumption and demand. South Africa is addressing this predicted increase in livestock products demand by commercializing smallholder livestock producers. The Limpopo Industrial Development Corporation (IDC) Nguni Cattle Development Project is an example of such effort. The economic performance of these efforts needs to be evaluated. We use gross margin analysis to evaluate the performance of the Limpopo IDC Nguni Cattle Development Project. Additionally, we use regression analysis to identify factors influencing gross margins. Our results indicate that although smallholders show potential to commercialize, they lack commercial farming experience and require that a strong extension support system be used as one of the strategies to improve profitability. We also noted that individual farmers were more profitable than group farmers. Multiple regression analysis shows that three variables could be used to stimulate gross margin among the Limpopo IDC Nguni Cattle Development Project farmers. These are herd size, distance to market and farm size. Since farm size is a given, policy should focus on assisting farmers to build their herds and to have better access to markets.

RevDate: 2021-07-10

Uomori T, Horimoto Y, Takanashi M, et al (2021)

Cerebral hemorrhage due to amyloid angiopathy that was difficult to differentiate from breast cancer metastasis: a case report.

Surgical case reports, 7(1):150.

BACKGROUND: Breast cancer patients are known to develop brain metastasis at a relatively high frequency. However, imaging findings of brain metastases vary, and it is sometimes very difficult to distinguish these from other tumorous lesions and non-neoplastic lesions, such as cerebral hemorrhage. Meanwhile, there are various causes of cerebral hemorrhage; a major one is cerebral amyloid angiopathy (CAA). With the advancement of imaging technology, CAA-related cerebral hemorrhage can be more precisely diagnosed with magnetic resonance imaging (MRI), but definitive diagnosis of CAA can only be made based on pathological assessment. Herein, we report a case of consciousness disorder appearing during adjuvant therapy for breast cancer. We initially considered that the patient's cerebral hemorrhage was due to a metastatic tumor, but based on excisional biopsy, she was diagnosed with CAA.

CASE PRESENTATION: A 73-year-old Japanese woman underwent curative surgery for left breast cancer. Her disease was hormone receptor-positive and human epidermal growth factor receptor 2 (HER2)-positive invasive ductal carcinoma (pStage IIB). While receiving adjuvant treatment, she developed disorientation, and emergent imaging revealed multiple cerebral hemorrhages. There was no apparent enhancement in the cerebral parenchyma on MRI, and differential diagnosis included hemorrhage due to a metastatic tumor, intravascular large B-cell lymphoma, CAA and thrombotic intracranial bleeding. After hospitalization, the bleeding lesion enlarged, resulting in cerebral hernia, and she needed emergency drainage surgery. The tissue surrounding the hemorrhage was pathologically assessed, and she was diagnosed with CAA. Although we initially suspected the lesion to be a metastatic tumor from breast cancer, there were no tumorous cells.

CONCLUSION: Atypical MRI findings made diagnosis difficult in this case, but it should be considered for differential diagnosis when multiple cerebral hemorrhages in elderly patients are observed, especially in cases with symptoms such as transient multifocal neurological deficits and dementia.

RevDate: 2025-05-30
CmpDate: 2021-10-04

Aftab F, Ahmed I, Ahmed S, et al (2021)

Direct maternal morbidity and the risk of pregnancy-related deaths, stillbirths, and neonatal deaths in South Asia and sub-Saharan Africa: A population-based prospective cohort study in 8 countries.

PLoS medicine, 18(6):e1003644.

BACKGROUND: Maternal morbidity occurs several times more frequently than mortality, yet data on morbidity burden and its effect on maternal, foetal, and newborn outcomes are limited in low- and middle-income countries. We aimed to generate prospective, reliable population-based data on the burden of major direct maternal morbidities in the antenatal, intrapartum, and postnatal periods and its association with maternal, foetal, and neonatal death in South Asia and sub-Saharan Africa.

METHODS AND FINDINGS: This is a prospective cohort study, conducted in 9 research sites in 8 countries of South Asia and sub-Saharan Africa. We conducted population-based surveillance of women of reproductive age (15 to 49 years) to identify pregnancies. Pregnant women who gave consent were include in the study and followed up to birth and 42 days postpartum from 2012 to 2015. We used standard operating procedures, data collection tools, and training to harmonise study implementation across sites. Three home visits during pregnancy and 2 home visits after birth were conducted to collect maternal morbidity information and maternal, foetal, and newborn outcomes. We measured blood pressure and proteinuria to define hypertensive disorders of pregnancy and woman's self-report to identify obstetric haemorrhage, pregnancy-related infection, and prolonged or obstructed labour. Enrolled women whose pregnancy lasted at least 28 weeks or those who died during pregnancy were included in the analysis. We used meta-analysis to combine site-specific estimates of burden, and regression analysis combining all data from all sites to examine associations between the maternal morbidities and adverse outcomes. Among approximately 735,000 women of reproductive age in the study population, and 133,238 pregnancies during the study period, only 1.6% refused consent. Of these, 114,927 pregnancies had morbidity data collected at least once in both antenatal and in postnatal period, and 114,050 of them were included in the analysis. Overall, 32.7% of included pregnancies had at least one major direct maternal morbidity; South Asia had almost double the burden compared to sub-Saharan Africa (43.9%, 95% CI 27.8% to 60.0% in South Asia; 23.7%, 95% CI 19.8% to 27.6% in sub-Saharan Africa). Antepartum haemorrhage was reported in 2.2% (95% CI 1.5% to 2.9%) pregnancies and severe postpartum in 1.7% (95% CI 1.2% to 2.2%) pregnancies. Preeclampsia or eclampsia was reported in 1.4% (95% CI 0.9% to 2.0%) pregnancies, and gestational hypertension alone was reported in 7.4% (95% CI 4.6% to 10.1%) pregnancies. Prolonged or obstructed labour was reported in about 11.1% (95% CI 5.4% to 16.8%) pregnancies. Clinical features of late third trimester antepartum infection were present in 9.1% (95% CI 5.6% to 12.6%) pregnancies and those of postpartum infection in 8.6% (95% CI 4.4% to 12.8%) pregnancies. There were 187 pregnancy-related deaths per 100,000 births, 27 stillbirths per 1,000 births, and 28 neonatal deaths per 1,000 live births with variation by country and region. Direct maternal morbidities were associated with each of these outcomes.

CONCLUSIONS: Our findings imply that health programmes in sub-Saharan Africa and South Asia must intensify their efforts to identify and treat maternal morbidities, which affected about one-third of all pregnancies and to prevent associated maternal and neonatal deaths and stillbirths.

TRIAL REGISTRATION: The study is not a clinical trial.

RevDate: 2024-06-15
CmpDate: 2022-01-07

Fedorov A, Longabaugh WJR, Pot D, et al (2021)

NCI Imaging Data Commons.

Cancer research, 81(16):4188-4193.

The National Cancer Institute (NCI) Cancer Research Data Commons (CRDC) aims to establish a national cloud-based data science infrastructure. Imaging Data Commons (IDC) is a new component of CRDC supported by the Cancer Moonshot. The goal of IDC is to enable a broad spectrum of cancer researchers, with and without imaging expertise, to easily access and explore the value of deidentified imaging data and to support integrated analyses with nonimaging data. We achieve this goal by colocating versatile imaging collections with cloud-based computing resources and data exploration, visualization, and analysis tools. The IDC pilot was released in October 2020 and is being continuously populated with radiology and histopathology collections. IDC provides access to curated imaging collections, accompanied by documentation, a user forum, and a growing number of analysis use cases that aim to demonstrate the value of a data commons framework applied to cancer imaging research. SIGNIFICANCE: This study introduces NCI Imaging Data Commons, a new repository of the NCI Cancer Research Data Commons, which will support cancer imaging research on the cloud.

RevDate: 2022-04-15
CmpDate: 2022-04-15

Zhao J, Sun G, Zhu S, et al (2022)

Circulating tumour DNA reveals genetic traits of patients with intraductal carcinoma of the prostate.

BJU international, 129(3):345-355.

OBJECTIVES: To investigate the genetic alterations of patients with prostate cancer (PCa) with and without intraductal carcinoma of the prostate (IDC-P).

PATIENTS AND METHODS: We performed targeted sequencing of plasma cell-free DNA on 161 patients with prostate adenocarcinoma (PAC) with IDC-P and 84 without IDC-P. Genomic alterations were compared between these two groups. The association between genetic alterations and patients' survival outcomes was also explored.

RESULTS: We identified that 29.8% (48/161) and 21.4% (18/84) of patients with and without IDC-P harboured genomic alterations in DNA repair pathways, respectively (P = 0.210). Pathogenic germline DNA repair alterations were frequently detected in IDC-P carriers compared to IDC-P non-carriers (11.8% [19/161] vs 2.4% [two of 84], P = 0.024). Germline BReast CAncer type 2 susceptibility protein (BRCA2) and somatic cyclin-dependent kinase 12 (CDK12) defects were specifically identified in IDC-P carriers relative to PAC (BRCA2: 8.7% [14/161] vs 0% and CDK12: 6.8% [11/161] vs 1.2% [one of 84]). Patients with IDC-P had a distinct androgen receptor (AR) pathway alteration, characterised by an enrichment of nuclear receptor corepressor 2 (NCOR2) mutations compared with patients with pure PAC (21.1% [34/161] vs 6.0% [five of 84], P = 0.004). Increased AR alterations were detected in patients harbouring tumours with an IDC-P proportion of ≥10% vs those with an IDC-P proportion of <10% (6.4% [five of 78] vs 18.1% [15/83], P = 0.045). For IDC-P carriers, tumour protein p53 (TP53) mutation was associated with shorter castration-resistant-free survival (median 10.9 vs 28.9 months, P = 0.026), and BRCA2 alteration was related to rapid prostate-specific antigen progression for those receiving abiraterone treatment (median 9.1 vs 11.9 months, P = 0.036).

CONCLUSION: Our findings provide genomic evidence explaining the aggressive phenotype of tumours with IDC-P, highlighting the potential therapeutic strategies for this patient population.

RevDate: 2025-01-03
CmpDate: 2021-07-08

Mayopoulos GA, Ein-Dor T, Li KG, et al (2021)

COVID-19 positivity associated with traumatic stress response to childbirth and no visitors and infant separation in the hospital.

Scientific reports, 11(1):13535.

As the novel coronavirus (COVID-19) has spread globally, a significant portion of pregnant and delivering women were infected with COVID-19. While emerging studies examined birth outcomes in COVID-19 positive women, knowledge of the psychological experience of childbirth and maternal wellness remains lacking. This matched-control survey-based study included a sample of women recruited during the first wave of the pandemic in the US who gave birth in the previous six months. Women reporting confirmed/suspected COVID-19 (n = 68) during pregnancy or childbirth were matched on background factors with women reporting COVID-19 negativity (n = 2,276). We found nearly 50% of COVID positive women endorsed acute traumatic stress symptoms at a clinical level in response to childbirth. This group was more than twice as likely to endorse acute stress and to have no visitors during maternity hospitalization than COVID negative women; they were also less likely to room-in with newborns. The COVID positive group reported higher levels of pain in delivery, lower newborn weights, and more infant admission to neonatal intensive care units. Our findings suggest COVID-19 affected populations are at increased risk for traumatic childbirth and associated risk for psychiatric morbidity. Attention to delivering women's wellbeing is warranted during the pandemic.

RevDate: 2021-07-02

Aarstad EM, Nordhaug P, Naghavi-Behzad M, et al (2019)

Prevalence of focal incidental breast uptake on FDG-PET/CT and risk of malignancy: a systematic review and meta-analysis.

European journal of hybrid imaging, 3(1):16.

BACKGROUND: FDG-PET/CT is increasingly used for oncologic and inflammatory diseases. Focal incidental FDG uptake occurs rarely in breast tissue but has often significant consequences. This study aimed to systematically review literature regarding focal incidental breast uptake (FIBU) on FDG-PET/CT in order to yield an update on the prevalence and risk of malignancy for FIBU.

METHODS: A systematic search for relevant articles published between 2012 and 2018 was performed through MEDLINE, Embase, and Cochrane databases. Studies addressing the detection of FIBU in patients without a previous history of breast malignancy were included. The QUADAS-2 was used for quality assessment, and eligible data were pooled using a fixed-effects model. I[2] was calculated for the heterogeneity between studies.

RESULTS: Eight studies containing 180,002 scans were included in the systematic review. The median prevalence of FIBU for both genders was 0.52% (range 0.18-22.5%). Prevalence for women was mentioned separately in five studies and varied from 0.51 to 23.5%. One study reporting a high prevalence was based on patients being staged for known malignancy, and the word "breast" was used in the search, which may have caused selection bias. Data from four studies were eligible for meta-analysis. A high degree of heterogeneity was observed for prevalence data (I[2] of 97.5%), while moderate heterogeneity was observed for data on malignancy risk assessment (I[2] of 62.8%). The pooled prevalence of FIBU in women was 0.61% (range 0.56-0.66%), and the pooled prevalence of malignancy of FIBUs was 38.7% (range 34.4-43.0%). The most commonly detected malignancy was invasive ductal carcinoma.

CONCLUSION: FIBU occurs rarely on FDG-PET/CT for female patients but yields a high risk of malignancy according to the results of published papers. Therefore, it should be considered relevant to further elucidate patients with incidentally detected FDG uptake in breast in clinical practice.

RevDate: 2021-09-02
CmpDate: 2021-09-02

Sela Y, Bar-Or RL, Kor A, et al (2021)

The Internet addiction test: Psychometric properties, socio-demographic risk factors and addictive co-morbidities in a large adult sample.

Addictive behaviors, 122:107023.

The Internet Addiction Test (IAT) (Young, 1998) is one of the most utilized diagnostic instruments to evaluate internet addiction. Despite the wide use of IAT in research and clinical settings, there is lack of an empirical validation of this scale among a largescale adult population. The present study aimed to: (1) investigate the psychometric properties of a Hebrew version of the IAT among large-scale Israeli adult sample. (2) Assess the socio-demographic characteristics of individuals who suffer from IA. (3) Assess the co-morbidity of IA in relation to substance and behavioral addictions. A cross sectional study was conducted, by constructing a representative sample (N = 4035) of the Jewish adult (18-70 y/o, M = 40.5, SD = 14.5) population in Israel. Participants responded an online survey, that measured IAT, socio-demographic characteristics, substance and behavioral addictions. Results showed that two-factor model (Emotional and Cognitive Preoccupation with the Internet and Loss of Control and Interference with Daily Life) has good psychometric properties and fits the data well. Young age, not being married (Risk Ratio [RR] = 1.98, 95% CI [1.51-2.63]), and having a low socio-economic status (RR = 1.41, 95% CI [1.05-1.90]) were found to be associated with IA. Drug (RR = 4.50, 95% CI [2.89-7.01]) and alcohol (RR = 3.54, 95% CI [1.50-5.42]) use disorders were associated with IA. High co-morbidity between behavioral addictions and IA was also found (RR = 15.24, 95% CI [11.17-20.78]). Overall, results show that the Hebrew version of the IAT is a valid and reliable instrument, and provide a comprehensive picture of IA prevalence and profile in adult Israeli sample.

RevDate: 2021-07-14
CmpDate: 2021-07-14

Itani MM, Nassar FJ, Tfayli AH, et al (2021)

A Signature of Four Circulating microRNAs as Potential Biomarkers for Diagnosing Early-Stage Breast Cancer.

International journal of molecular sciences, 22(11):.

Breast cancer (BC) is the most predominant type of cancer among women. The aim of this study is to find new biomarkers that can help in early detection of BC, especially for those who are too young to be screened using mammography as per guidelines. Using microRNA microarray, we previously showed dysregulation of 74 microRNAs in tumors from early BC patients as compared with normal adjacent tissues, which we were interested in studying in blood circulation. In this study, we investigated the expression of 12 microRNA (miR-21/miR-155/miR-23a/miR-130a/miR-145/miR-425-5p/miR-139-5p/miR-451/miR-195/miR-125b/miR-100, and miR-182) in the plasma of 41 newly diagnosed Lebanese BC patients with early invasive ductal carcinoma as compared with 32 healthy controls. Total RNA was extracted from plasma, and expression levels of miRNA of interest were measured using RT-qPCR followed by statistical analysis; miR-21, miR-155, miR-23a, miR-130a, miR-145, miR-425-5p, and miR-139-5p were significantly upregulated and miR-451 was significantly downregulated, in the plasma of BC patients as compared with healthy controls. The positively correlated miR-23a, miR-21, and miR-130a had a high diagnostic accuracy (86%). Importantly, the combination of miR-145/miR-425-5p/miR-139-5p/miR-130a scored the highest diagnostic accuracy of 95% with AUC = 0.97 (sensitivity 97% and specificity 91%). MicroRNAs are promising non-invasive diagnostic biomarkers for early-stage BC with the panel of miR-145/miR-425-5p/miR-139-5p/miR-130a having the highest diagnostic accuracy.

RevDate: 2026-04-14
CmpDate: 2022-03-03

Avau F, Chintinne M, Baudry S, et al (2022)

Literature review and case report of bilateral intracystic papillary carcinoma associated with an invasive ductal carcinoma in a male breast.

Breast disease, 41(1):5-13.

Intracystic papillary carcinoma (IPC) is a rare tumor with good prognosis that occurs in only 5% to 7.5% of male breast cancer. We report a case of a 46-year-old man who presented a brown nipple discharge a few months ago. He had a bilateral IPC and an invasive ductal carcinoma on the right breast. A double mastectomy was then performed with a bilateral sentinel lymph node biopsy, and he received chemotherapy, radiotherapy, and hormonotherapy. Two years after the diagnosis, the patient recovered and was free of recurrence. Considering the scarcity of this tumor type, we conducted a systematic literature review on the PubMed of all the cases of IPC in men. The clinical presentation, imaging, and treatment of the 43 case reports from the 41 articles selected were described. Furthermore, no clear guidelines for IPC management are available. Conservative surgery should also be preferred, and a sentinel lymph node biopsy should be performed systematically. Moreover, radiotherapy should be proposed in the case of conservative surgery, and hormone therapy could be proposed in the case of invasive IPC or IPC associated with a ductal carcinoma in situ.

RevDate: 2022-01-17
CmpDate: 2022-01-17

Pariyar M, Johns A, Thorne RF, et al (2021)

Copy number variation in triple negative breast cancer samples associated with lymph node metastasis.

Neoplasia (New York, N.Y.), 23(8):743-753.

Triple negative breast cancer (TNBC) is a highly metastatic and aggressive subtype of breast cancer and cases presenting with lymph node involvement have worse outcomes. This study aimed to determine the regions of copy number variation (CNV) associated with lymph node metastasis in TNBC patients. CNV analyses were performed in a study cohort of 23 invasive ductal carcinomas (IDCs), 12 lymph node metastases (LNmets), and 7 normal adjacent tissues (NATs); as well as in an independent cohort containing 70 TNBC IDCs and the same 7 NATs. CNV-associated genes were analyzed using GO-enrichment and Pathway analysis. The prognostic role for genes showing CNV-based changes in messenger RNA expression was determined using the Kaplan-Meier plotter database. For the IDCs, there were a number of variations that were common in both the study and independent cohorts in the amplified regions of 1q, 8q, 19 (p and q), 2p, 5p and the deleted regions in 8p followed by 5q, and 19p. The most frequently amplified regions in the LNmets of the study cohort were 4q28.3, 2p, 3q24, 1q21.2, 10p, 12p11.1, 8q, 20p11.22-20p11.21, 21q22.13, 6p22.1 and the most frequently deleted regions were in 1p36.23, 4q21.1 and 5q. A total of 686 (441 amplified and 245 deleted) genes were associated with LNmets. The LNmet-associated genes were highly enriched for "regulation of complement activation," "regulation of protein activation cascade," "regulation of humoral immune response," "oxytocin signalling pathway," and "TRAIL binding" pathways. Moreover, 6/686 LNmet-associated genes showed CNV-based changes in their mRNA expression of which, high expression of ASPM and KIF14 was significantly associated with worse relapse-free survival. This study has identified several CNV regions in TNBC that could play a major role in metastasis to the lymph node.

RevDate: 2024-04-02

Muthumani K, Xu Z, Jeong M, et al (2021)

Preexisting vs. de novo antibodies against SARS-CoV-2 in individuals without or with virus infection: impact on antibody therapy, vaccine research and serological testing.

Translational medicine communications, 6(1):13.

The causative agent of the ongoing pandemic in the world is SARS-CoV-2. The research on SARS-CoV-2 has progressed with lightning speed on various fronts, including clinical research and treatment, virology, epidemiology, drug development, and vaccine research. Recent studies reported that sera from healthy individuals, who were confirmed negative for SARS-CoV-2 by RT-PCR method, tested positive for antibodies against spike and nucleocapsid proteins of SARS-CoV-2. Further, such antibodies also exhibited neutralizing activity against the virus. These observations have prompted us to prepare a commentary on this topic. While the preexisting antibodies are likely to protect against SARS-CoV-2 infection, they may also complicate serological testing results. Another unknown is the influence of preexisting antibodies on immune responses in individuals receiving vaccines against SARS-CoV-2. The commentary identifies the potential limitations with the serological tests based on spike and nucleocapsid proteins as these tests may overestimate the seroprevalence due to cross-reactive antibodies. The inclusion of tests specific to SARS-CoV-2 (such as RBD of spike protein) could overcome these limitations.

RevDate: 2023-11-07
CmpDate: 2021-11-02

Samson J, Derlipanska M, Zaheed O, et al (2021)

Molecular and cellular characterization of two patient-derived ductal carcinoma in situ (DCIS) cell lines, ETCC-006 and ETCC-010.

BMC cancer, 21(1):790.

BACKGROUND: Currently it is unclear how in situ breast cancer progresses to invasive disease; therefore, a better understanding of the events that occur during the transition to invasive carcinoma is warranted. Here we have conducted a detailed molecular and cellular characterization of two, patient-derived, ductal carcinoma in situ (DCIS) cell lines, ETCC-006 and ETCC-010.

METHODS: Human DCIS cell lines, ETCC-006 and ETCC-010, were compared against a panel of cell lines including the immortalized, breast epithelial cell line, MCF10A, breast cancer cell lines, MCF7 and MDA-MB-231, and another DCIS line, MCF10DCIS.com. Cell morphology, hormone and HER2/ERBB2 receptor status, cell proliferation, survival, migration, anchorage-independent growth, indicators of EMT, cell signalling pathways and cell cycle proteins were examined using immunostaining, immunoblots, and quantitative, reverse transcriptase PCR (qRT-PCR), along with clonogenic, wound-closure and soft agar assays. RNA sequencing (RNAseq) was used to provide a transcriptomic profile.

RESULTS: ETCC-006 and ETCC-010 cells displayed notable differences to another DCIS cell line, MCF10DCIS.com, in terms of morphology, steroid-receptor/HER status and markers of EMT. The ETCC cell lines lack ER/PR and HER, form colonies in clonogenic assays, have migratory capacity and are capable of anchorage-independent growth. Despite being isogenic, less than 30% of differentially expressed transcripts overlapped between the two lines, with enrichment in pathways involving receptor tyrosine kinases and DNA replication/cell cycle programs and in gene sets responsible for extracellular matrix organisation and ion transport.

CONCLUSIONS: For the first time, we provide a molecular and cellular characterization of two, patient-derived DCIS cell lines, ETCC-006 and ETCC-010, facilitating future investigations into the molecular basis of DCIS to invasive ductal carcinoma transition.

RevDate: 2024-07-24
CmpDate: 2024-07-24

Xu Z, Kurek A, Cannon SB, et al (2021)

Predictions from algorithmic modeling result in better decisions than from data modeling for soybean iron deficiency chlorosis.

PloS one, 16(7):e0240948.

In soybean variety development and genetic improvement projects, iron deficiency chlorosis (IDC) is visually assessed as an ordinal response variable. Linear Mixed Models for Genomic Prediction (GP) have been developed, compared, and used to select continuous plant traits such as yield, height, and maturity, but can be inappropriate for ordinal traits. Generalized Linear Mixed Models have been developed for GP of ordinal response variables. However, neither approach addresses the most important questions for cultivar development and genetic improvement: How frequently are the 'wrong' genotypes retained, and how often are the 'correct' genotypes discarded? The research objective reported herein was to compare outcomes from four data modeling and six algorithmic modeling GP methods applied to IDC using decision metrics appropriate for variety development and genetic improvement projects. Appropriate metrics for decision making consist of specificity, sensitivity, precision, decision accuracy, and area under the receiver operating characteristic curve. Data modeling methods for GP included ridge regression, logistic regression, penalized logistic regression, and Bayesian generalized linear regression. Algorithmic modeling methods include Random Forest, Gradient Boosting Machine, Support Vector Machine, K-Nearest Neighbors, Naïve Bayes, and Artificial Neural Network. We found that a Support Vector Machine model provided the most specific decisions of correctly discarding IDC susceptible genotypes, while a Random Forest model resulted in the best decisions of retaining IDC tolerant genotypes, as well as the best outcomes when considering all decision metrics. Overall, the predictions from algorithmic modeling result in better decisions than from data modeling methods applied to soybean IDC.

RevDate: 2024-04-02
CmpDate: 2021-07-20

Chiong F, Wasef MS, Liew KC, et al (2021)

The impact of infectious diseases consultation on the management and outcomes of Pseudomonas aeruginosa bacteraemia in adults: a retrospective cohort study.

BMC infectious diseases, 21(1):671.

BACKGROUND: Pseudomonas aeruginosa bacteraemia (PAB) is associated with high mortality. The benefits of infectious diseases consultation (IDC) has been demonstrated in Staphylococcal aureus bacteraemia and other complex infections. Impact of IDC in PAB is unclear. This study aimed to evaluate the impact of IDC on the management and outcomes in patients with PAB.

METHODS: This is a retrospective cohort single-centre study from 1 November 2006 to 29 May 2019, in all adult patients admitted with first episode of PAB. Data collected included demographics, clinical management and outcomes for PAB and whether IDC occurred. In addition, 29 Pseudomonas aeruginosa (PA) stored isolates were available for Illumina whole genome sequencing to investigate if pathogen factors contributed to the mortality.

RESULTS: A total of 128 cases of PAB were identified, 71% received IDC. Patients who received IDC were less likely to receive inappropriate duration of antibiotic therapy (4.4%; vs 67.6%; p < 0.01), more likely to be de-escalated to oral antibiotic in a timely manner (87.9% vs 40.5%; p < 0.01), undergo removal of infected catheter (27.5% vs 13.5%; p = 0.049) and undergo surgical intervention (20.9% vs 5.4%, p = 0.023) for source control. The overall 30-day all-cause mortality rate was 24.2% and was significantly higher in the no IDC group in both unadjusted (56.8% vs 11.0%, odds ratio [OR] = 10.63, p < 0.001) and adjusted analysis (adjusted OR = 7.84; 95% confidence interval, 2.95-20.86). The genotypic analysis did not reveal any PA genetic features associated with increased mortality between IDC versus no IDC groups.

CONCLUSION: Patients who received IDC for PAB had lower 30-day mortality, better source control and management was more compliant with guidelines. Further prospective studies are necessary to determine if these results can be validated in other settings.

RevDate: 2025-12-15

Lin Q, Chen X, Meng F, et al (2021)

Multi-organ metastasis as destination for breast cancer cells guided by biomechanical architecture.

American journal of cancer research, 11(6):2537-2567.

A majority of breast cancer patients die of widespread aggressive multidrug-resistant tumors. Aspartate β-hydroxylase (ASPH) is an α-ketoglutarate-dependent dioxygenase and oncofetal antigen involved in embryogenesis. To illustrate if ASPH could be targeted for metastatic breast cancer, embedded and on-top three-dimensional (3-D) cultures, 3-D invasion, mammosphere formation, immunofluorescence, immunohistochemistry, Western blot, co-IP and microarray were conducted. In vitro metastasis was developed to imitate how cancer cells invade basement membrane at the primary site, transendothelially migrate, consequently colonize and outgrow at distant sites. Orthotopic and experimental pulmonary metastatic (tail vein injection) murine models were established using stable breast cancer cell lines. Cox proportional hazards regression models and Kaplan-Meier plots were applied to assess clinical outcome of breast cancer patients. In adult non-cancerous breast tissue, ASPH is undetectable. Pathologically, ASPH expression re-emerged at ductal carcinoma in situ (DCIS), and enhanced with disease progression, from early-stage invasive ductal carcinoma (IDC) to late-stage carcinoma. ASPH at moderate to high levels contribute to aggressive molecular subtypes, early relapse or more frequent progression and metastases, whereas substantially shortened overall survival and disease-free survival of breast cancer patients. Through direct physical interactions with A disintegrin and metalloproteinase domain-containing protein (ADAM)-12/ADAM-15, ASPH could activate SRC cascade, thus upregulating downstream components attributed to multifaceted metastasis. ASPH-SRC axis initiated pro-invasive invadopodium formation causing breakdown/disorganization of extracellular matrix (ECM), simultaneously potentiated epithelial-mesenchymal transition (EMT), induced cancer stem cell markers (CD44 and EpCAM), enhanced mammosphere formation and intensified 3-dimentional invasion. Oncogenic SRC upregulated matrix metallopeptidases (MMPs) were assembled by invadopodia, acting as executive effectors for multi-step metastasis. ASPH-SRC signal guided multi-organ metastases (to lungs, liver, bone, spleen, lymph nodes, mesentery or colon) in immunocompromised mice. Malignant phenotypes induced by ASPH-SRC axis were reversed by the third-generation small molecule inhibitor (SMI) specifically against β-hydroxylase activity of ASPH in pre-clinical models of metastatic breast cancer. Collectively, ASPH could activate ADAMs-SRC-MMPs cascades to promote breast cancer tumor progression and metastasis. ASPH could direct invadopodium construction as a biomechanical sensor and pro-metastatic outlet. ASPH-mediated cancer progression could be specifically/efficiently subverted by SMIs of β-hydroxylase activity. Therefore, ASPH emerges as a therapeutic target for breast cancer.

RevDate: 2022-03-30
CmpDate: 2022-02-23

Considine B, Adeniran A, ME Hurwitz (2021)

Current Understanding and Management of Intraductal Carcinoma of the Prostate.

Current oncology reports, 23(9):110.

PURPOSE OF REVIEW: This review will discuss current understanding and management approaches of Intraductal carcinoma of the prostate (IDC-P). IDC-P is a histological finding characterized by neoplastic cells that expand but do not invade prostate ducts.

RECENT FINDINGS: The presence of IDC-P on a prostate biopsy is almost always associated with an invasive disease component and is independently associated with worse clinical outcomes in both early and late disease. These tumors are enriched for mutations in homologous DNA recombination repair (HRR) leading to high genomic instability. Multiparametric MRI with targeted biopsy may aid in diagnosis. Given the poor clinical outcomes associated with this histologic entity, its presence in biopsies should warrant consideration of aggressive management.

RevDate: 2024-08-15
CmpDate: 2022-02-10

Qi H, Schmöhl F, Li X, et al (2021)

Reduced Acrolein Detoxification in akr1a1a Zebrafish Mutants Causes Impaired Insulin Receptor Signaling and Microvascular Alterations.

Advanced science (Weinheim, Baden-Wurttemberg, Germany), 8(18):e2101281.

Increased acrolein (ACR), a toxic metabolite derived from energy consumption, is associated with diabetes and its complications. However, the molecular mechanisms are mostly unknown, and a suitable animal model with internal increased ACR does not exist for in vivo studying so far. Several enzyme systems are responsible for acrolein detoxification, such as Aldehyde Dehydrogenase (ALDH), Aldo-Keto Reductase (AKR), and Glutathione S-Transferase (GST). To evaluate the function of ACR in glucose homeostasis and diabetes, akr1a1a[-/-] zebrafish mutants are generated using CRISPR/Cas9 technology. Accumulated endogenous acrolein is confirmed in akr1a1a[-/-] larvae and livers of adults. Moreover, a series of experiments are performed regarding organic alterations, the glucose homeostasis, transcriptome, and metabolomics in Tg(fli1:EGFP) zebrafish. Akr1a1a[-/-] larvae display impaired glucose homeostasis and angiogenic retina hyaloid vasculature, which are caused by reduced acrolein detoxification ability and increased internal ACR concentration. The effects of acrolein on hyaloid vasculature can be reversed by acrolein-scavenger l-carnosine treatment. In adult akr1a1a[-/-] mutants, impaired glucose tolerance accompanied by angiogenic retina vessels and glomerular basement membrane thickening, consistent with an early pathological appearance in diabetic retinopathy and nephropathy, are observed. Thus, the data strongly suggest impaired ACR detoxification and elevated ACR concentration as biomarkers and inducers for diabetes and diabetic complications.

RevDate: 2022-04-26
CmpDate: 2021-09-27

Ren X, Ju Y, Wang C, et al (2021)

MARCKS on Tumor-Associated Macrophages is Correlated with Immune Infiltrates and Poor Prognosis in Hepatocellular Carcinoma.

Cancer investigation, 39(9):756-768.

BACKGROUND: Hepatocellular carcinoma is the fourth most common cause of cancer-related death. However, the cross-talk between tumor immune microenvironment and hepatocellular carcinoma (HCC) remains unclear.

MATERIAL AND METHODS: We analyzed the expression of miR-143-3p in exosomes from different HCC cell lines. Differentially expressed genes (DEGs) in Tumor-associated macrophages (TAMs) co-cultured with HCC cell lines were overlapped with miR-143-3p target genes. We used the Oncomine, Kaplan-Meier plotter, and The Cancer Genome Atlas (TCGA) databases to assess Myristoylated alanine-rich C-kinase substrate (MARCKS) expression in various types of cancers. The relationship between patient clinicopathological characteristics and MARCKS expression level was identified using the Kaplan-Meier plotter database. Last, we analyzed how MARCKS expression correlated with immune infiltration makers using the TCGA database, Tumor IMmune Estimation Resource (TIMER), and Gene Expression Profiling Interactive Analysis (GEPIA).

RESULTS: Exosomal miR-143-3p was elevated after IL-6 treatment in the HCC cell line. MARCKS, a target gene of miR-143-3p, was up-regulated in Tumor-associated macrophages co-cultured with high-metastatic-potential HCC cell line. MARCKS expression was identified as significantly correlated with outcome in multiple types of cancer, especially in HCC. High MARCKS expression level was associated with poorer overall survival (OS), Progress-free survival (PFS), and also with patient gender, race, hepatitis virus background, stage, grade, AJCC_T, and vascular invasion. MARCKS was positively associated with levels of T follicular helper cells (TFH) (R = .48, p < .001), T helper type 2 (Th2) cells (R = .47, p < .001), macrophages (R = .41, p ≤ .001), T helper cells (R = .40, p < .001), T helper type 1 (Th1) cells (R = .38, p < .001), T cells (R = .34, p < .001), NK CD56bright cells (R = .34, p < .001) and immature DC (iDC) (R = .33, p < .001), and negatively associated with levels of T helper 17 (Th17) cells. Also, MARCKS may influence the M2 polarization and immune escape.

CONCLUSION: The present study suggests that MARCKS on TAMs is associated with poor prognosis and immune cell infiltration in HCC.

RevDate: 2022-01-26
CmpDate: 2022-01-26

Okcu O, Öztürk Ç, Şen B, et al (2021)

Tumor Budding is a reliable predictor for death and metastasis in invasive ductal breast cancer and correlates with other prognostic clinicopathological parameters.

Annals of diagnostic pathology, 54:151792.

BACKGROUND AND OBJECTIVE: Breast cancers are the most common type of cancer and the most common cause of mortality in women worldwide. Different prognostic factors are the subject of research to differentiate the prognosis even between cases at a similar stage and identify risky patients earlier and create individual treatment approaches. Tumor budding (TB) has been identified as a poor prognostic factor in many types of cancer, especially colorectal carcinomas. In our study, we aimed to determine the prognostic significance of the TB by evaluating the TB in line with clinicopathological parameters in breast invasive ductal carcinoma cases.

MATERIALS AND METHODS: 311 breast carcinoma cases operated in our hospital between January 2010 and April 2020 were included in the study. In hematoxylin-eosin (H&E) sections of the cases, TB was evaluated in a single high-power field (HPF). ROC analysis was performed with overall survival data, and low, and high TB cutoffs were obtained. The relationship of the high TB with clinicopathological parameters was evaluated, and survival analysis was performed.

RESULTS: We determined that high TB in breast invasive ductal carcinoma cases was associated with low survival time, metastasis, axillary lymph node metastasis, angiolymphatic invasion, advanced stage (pT3), high Ki-67 proliferation index, progesterone receptor (PR) loss, and advanced age. Tumor budding was identified as an independent risk factor in overall and disease-free survival analysis.

CONCLUSION: Tumor budding is a prognostic parameter that can be easily evaluated in all centers since it does not cause additional cost to routine pathological examinations. We think it may be helpful to establish a standard methodology in evaluating tumor bud in breast carcinomas and including it in regular pathology reporting.

RevDate: 2022-03-21
CmpDate: 2022-03-21

Chen X, Li X, Wang J, et al (2021)

Breast invasive ductal carcinoma diagnosis with a three-miRNA panel in serum.

Biomarkers in medicine, 15(12):951-963.

Aim: Breast cancer, especially invasive ductal carcinoma (IDC), is the cause of a great clinical burden. miRNA could be considered as a noninvasive biomarkers for IDC diagnosis. Materials & methods: Two hundred and sixty participants (135 IDC patients and 125 healthy controls) were enrolled in a three-cohort study. The expression of 28 miRNAs in serum were detected with quantitative reverse transcription-PCR. Bioinformatic analysis was used for predicting the target genes of three selected miRNAs. Results: The expression level of seven miRNAs (miR-9-5p, miR-34b-3p, miR-1-3p, miR-146a-5p, miR-20a-5p, miR-34a-5p, miR-125b-5p) was discrepant at the validation cohort. Through statistical test, a three-miRNA panel (miR-9-5p, miR-34b-3p, miR-146a-5p) was significant for IDC diagnosis (AUC = 0.880, sensitivity = 86.25%, specificity = 81.25%). Conclusion: The three-miRNA panel in serum could be used as a noninvasive biomarker in the diagnosis of IDC.

RevDate: 2021-11-08
CmpDate: 2021-11-08

Ahmed F, Adnan M, Malik A, et al (2021)

Perception of breast cancer risk factors: Dysregulation of TGF-β/miRNA axis in Pakistani females.

PloS one, 16(7):e0255243.

Breast cancer poses a serious health risk for women throughout the world. Among the Asian population, Pakistani women have the highest risk of developing breast cancer. One out of nine women is diagnosed with breast cancer in Pakistan. The etiology and the risk factor leading to breast cancer are largely unknown. In the current study the risk factors that are most pertinent to the Pakistani population, the etiology, molecular mechanisms of tumor progression, and therapeutic targets of breast cancer are studied. A correlative, cross-sectional, descriptive, and questionnaire-based study was designed to predict the risk factors in breast cancer patients. Invasive Ductal Carcinoma (90%) and grade-II tumor (73.2%) formation are more common in our patient's data set. Clinical parameters such as mean age of 47.5 years (SD ± 11.17), disturbed menstrual cycle (> 2), cousin marriages (repeated), and lactation period (< 0.5 Y) along with stress, dietary and environmental factors have an essential role in the development of breast cancer. In addition to this in silico analysis was performed to screen the miRNA regulating the TGF-beta pathway using TargetScanHuman, and correlation was depicted through Mindjet Manager. The information thus obtained was observed in breast cancer clinical samples both in peripheral blood mononuclear cells, and biopsy through quantitative real-time PCR. There was a significant dysregulation (**P>0.001) of the TGF-β1 signaling pathway and the miRNAs (miR-29a, miR-140, and miR-148a) in patients' biopsy in grade and stage specifically, correlated with expression in blood samples. miRNAs (miR-29a and miR-140, miR-148a) can be an effective diagnostic and prognostic marker as they regulate SMAD4 and SMAD2 expression respectively in breast cancer blood and biopsy samples. Therefore, proactive therapeutic strategies can be devised considering negatively regulated cascade genes and amalgamated miRNAs to control breast cancer better.

RevDate: 2022-01-05
CmpDate: 2022-01-05

Rafiq MT, Hamid MSA, Hafiz E, et al (2021)

Feasibility and Acceptability of Instructions of Daily Care in Overweight and Obese Knee Osteoarthritis Participants.

Current rheumatology reviews, 17(4):421-427.

INTRODUCTION: Knee Osteoarthritis (OA) is a weight-bearing joint disease and is more common in overweight and obese persons. The objective of the study was to assess the feasibility and acceptability of Instructions of Daily Care (IDC) on pain, mobility, and Body Mass Index (BMI) among knee OA participants who are overweight or obese.

MATERIALS AND METHODS: The study was an open-label randomized controlled trial of six weeks. Forty overweight and obese participants with knee OA were randomly divided into two groups by a computer-generated number. The participants in the Instruction Group (IG) were provided with leaflets explaining IDC for the duration of six weeks. Both groups were instructed to take low doses of the non-steroid anti-inflammatory drug (NSAIDs) on alternate days. The outcome measures were pain, mobility and BMI. The feasibility and acceptability of knee pain and mobility were assessed using a questionnaire designed by experts in rehabilitation.

RESULTS: Participants in the IG reported more statistically significant pain relief as assessed by the Western Ontario and McMaster Universities Osteoarthritis Index score (p=0.001) and improvement in mobility (p=0.000) assessed by the Timed Up and Go test score after six weeks compared to the Control Group (CG). Both groups did not demonstrate any significant change in BMI (p-value > 0.05). The results of descriptive statistics showed a significantly higher satisfaction score for participants who received a combination of IDC and NSAIDs, indicating an acceptable intervention.

CONCLUSION: The IDC is effective and acceptable in terms of improving pain and mobility and should be recommended as the usual care of treatment.

RevDate: 2021-07-29

Ramani SK, Rastogi A, Nair N, et al (2021)

Hyperechoic Lesions on Breast Ultrasound: All Things Bright and Beautiful?.

The Indian journal of radiology & imaging, 31(1):18-23.

Ultrasound (US) lexicon of the Breast Imaging Reporting and Data System (BI-RADS) defines an echogenic breast mass as a lesion that is hyperechoic in comparison with subcutaneous adipose tissue. However, at sonography, only 0.6 to 5.6% of breast masses are echogenic and the majority of these lesions are benign. approximately, 0.5% of malignant breast lesions appear hyperechoic. The various benign pathologic entities that appear echogenic on US are lipoma, hematoma, seroma, fat necrosis, abscess, pseudoangiomatous stromal hyperplasia, galactocele, etc. The malignant diagnoses that may present as hyperechoic lesions on breast US are invasive ductal carcinoma, invasive lobular carcinoma, metastasis, lymphoma, and angiosarcoma. Echogenic breast masses need to be correlated with mammographic findings and clinical history. Lesions with worrisome features such as a spiculated margin, interval enlargement, interval vascularity, or association with suspicious microcalcifications on mammography require biopsy. In this article, we would like to present a pictorial review of patients who presented to our department with echogenic breast masses and were subsequently found to have various malignant as well as benign etiologies on histopathology.

RevDate: 2022-05-31
CmpDate: 2021-07-30

Fan T, Wang CQ, Li XT, et al (2021)

MiR-22-3p Suppresses Cell Migration and Invasion by Targeting PLAGL2 in Breast Cancer.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP, 31(8):937-940.

OBJECTIVE: To investigate the expression of miR-22-3p in breast cancer and the mechanism of targeting PLAGL2 to inhibit the invasion and migration in human breast cancer.

STUDY DESIGN: An experimental study.

PLACE AND DURATION OF STUDY: Department of Oncology and Department of General Surgery, The People's Hospital of China Three Gorges University, China, from March 2019 to December 2020.

METHODOLOGY: The miR-22-3p expression level in 41 paired human primary breast invasive ductal carcinoma tissues and para-cancer tissues was obtained by real-time fluorescence quantitative reverse transcriptase PCR (qRT-PCR). The effect of miR-22-3p on the proliferation of breast cancer cells was detected by growth curve method. Online software TargetScan was used to predict the target genes of miR-22-3p. The prediction results were verified by luciferase reporter gene assay and qRT⁃PCR.

RESULTS: MiR-22-3p expression was significantly decreased in the breast cancer tissues than in para⁃carcinoma normal breast tissues (p<0.05). Over-expression of miR-22-3p can inhibit the proliferation of MCF-7 cells significantly. Pleomorphic adenoma gene-like protein 2(PLAGL2) is the predicted target gene of miR-22-3p. MiR-22-3p binds to its predicted target gene PLAGL2-3'UTR. The expression of miR-22-3p was negatively correlated with PLAGL2 in MCF-7 cells.

CONCLUSION: MiR-22-3p could suppress the proliferation of breast cancer by targeting PLAGL2. This suggests that miR-22-3p may be a strategy of choice for targeted therapy of breast cancer. Key Words: Breast cancer, MiR-22-3p, PLAGL2, Cell proliferation.

RevDate: 2022-02-16
CmpDate: 2022-02-16

Meyer D, Kames J, Bar H, et al (2021)

Distinct signatures of codon and codon pair usage in 32 primary tumor types in the novel database CancerCoCoPUTs for cancer-specific codon usage.

Genome medicine, 13(1):122.

BACKGROUND: Gene expression is highly variable across tissues of multi-cellular organisms, influencing the codon usage of the tissue-specific transcriptome. Cancer disrupts the gene expression pattern of healthy tissue resulting in altered codon usage preferences. The topic of codon usage changes as they relate to codon demand, and tRNA supply in cancer is of growing interest.

METHODS: We analyzed transcriptome-weighted codon and codon pair usage based on The Cancer Genome Atlas (TCGA) RNA-seq data from 6427 solid tumor samples and 632 normal tissue samples. This dataset represents 32 cancer types affecting 11 distinct tissues. Our analysis focused on tissues that give rise to multiple solid tumor types and cancer types that are present in multiple tissues.

RESULTS: We identified distinct patterns of synonymous codon usage changes for different cancer types affecting the same tissue. For example, a substantial increase in GGT-glycine was observed in invasive ductal carcinoma (IDC), invasive lobular carcinoma (ILC), and mixed invasive ductal and lobular carcinoma (IDLC) of the breast. Change in synonymous codon preference favoring GGT correlated with change in synonymous codon preference against GGC in IDC and IDLC, but not in ILC. Furthermore, we examined the codon usage changes between paired healthy/tumor tissue from the same patient. Using clinical data from TCGA, we conducted a survival analysis of patients based on the degree of change between healthy and tumor-specific codon usage, revealing an association between larger changes and increased mortality. We have also created a database that contains cancer-specific codon and codon pair usage data for cancer types derived from TCGA, which represents a comprehensive tool for codon-usage-oriented cancer research.

CONCLUSIONS: Based on data from TCGA, we have highlighted tumor type-specific signatures of codon and codon pair usage. Paired data revealed variable changes to codon usage patterns, which must be considered when designing personalized cancer treatments. The associated database, CancerCoCoPUTs, represents a comprehensive resource for codon and codon pair usage in cancer and is available at https://dnahive.fda.gov/review/cancercocoputs/ . These findings are important to understand the relationship between tRNA supply and codon demand in cancer states and could help guide the development of new cancer therapeutics.

RevDate: 2023-02-05
CmpDate: 2021-08-17

Thomson-Luque R, Votborg-Novél L, Ndovie W, et al (2021)

Plasmodium falciparum transcription in different clinical presentations of malaria associates with circulation time of infected erythrocytes.

Nature communications, 12(1):4711.

Following Plasmodium falciparum infection, individuals can remain asymptomatic, present with mild fever in uncomplicated malaria cases, or show one or more severe malaria symptoms. Several studies have investigated associations between parasite transcription and clinical severity, but no broad conclusions have yet been drawn. Here, we apply a series of bioinformatic approaches based on P. falciparum's tightly regulated transcriptional pattern during its ~48-hour intraerythrocytic developmental cycle (IDC) to publicly available transcriptomes of parasites obtained from malaria cases of differing clinical severity across multiple studies. Our analysis shows that within each IDC, the circulation time of infected erythrocytes without sequestering to endothelial cells decreases with increasing parasitaemia or disease severity. Accordingly, we find that the size of circulating infected erythrocytes is inversely related to parasite density and disease severity. We propose that enhanced adhesiveness of infected erythrocytes leads to a rapid increase in parasite burden, promoting higher parasitaemia and increased disease severity.

RevDate: 2021-08-03

McCray E, Naron R, White S, et al (2021)

Metastatic Breast Cancer Masked as Constipation.

Cureus, 13(6):e16031.

Even though screening mammography has been attributed to decreased mortality in recent decades, breast cancer is one of the leading causes of death among women in the United States. Disruption of screening protocols and variation in the presentation may alter the course of detection and management. We report a case of hormone receptor-positive breast cancer that presented as vague gastrointestinal symptoms in a patient with a delayed workup for a self-discovered breast lump during the coronavirus disease global pandemic. A 48-year-old woman with a history of gastroesophageal reflux and hypertension presented to the emergency department with primary complaints of constipation and abdominal distention with associated flatus and nausea. Vitals were within normal limits, and physical examination was notable for abdominal distention and diffuse tenderness to palpation. Labs demonstrated hypercalcemia and an unremarkable complete blood count. A chest X-ray showed a right hilar mass, and a CT chest revealed multiple lytic bone lesions diffusely scattered throughout the entire skeleton; no hilar mass was noted on the CT chest. A CT scan of the abdomen and pelvis incidentally revealed a right breast mass. A bone marrow biopsy identified invasive ductal carcinoma. Mammography and biopsy of the breast mass identified estrogen receptor/progesterone receptor-positive invasive ductal carcinoma, consistent with the bone marrow biopsy, confirming the diagnosis of metastatic breast cancer. Unpredicted disruptions in screening processes may result in delayed cancer diagnoses. This case illustrates the importance of routine self-breast examinations, screening mammography, and maintaining a broad differential diagnosis.

RevDate: 2022-01-05
CmpDate: 2022-01-05

Pickford AK, Michel-Todó L, Dupuy F, et al (2021)

Expression Patterns of Plasmodium falciparum Clonally Variant Genes at the Onset of a Blood Infection in Malaria-Naive Humans.

mBio, 12(4):e0163621.

Clonally variant genes (CVGs) play fundamental roles in the adaptation of Plasmodium falciparum to fluctuating conditions of the human host. However, their expression patterns under the natural conditions of the blood circulation have been characterized in detail for only a few specific gene families. Here, we provide a detailed characterization of the complete P. falciparum transcriptome across the full intraerythrocytic development cycle (IDC) at the onset of a blood infection in malaria-naive human volunteers. We found that the vast majority of transcriptional differences between parasites obtained from the volunteers and the parental parasite line maintained in culture occurred in CVGs. In particular, we observed a major increase in the transcript levels of most genes of the pfmc-2tm and gbp families and of specific genes of other families, such as phist, hyp10, rif, or stevor, in addition to previously reported changes in var and clag3 gene expression. Increased transcript levels of individual pfmc-2tm, rif, and stevor genes involved activation in small subsets of parasites. Large transcriptional differences correlated with changes in the distribution of heterochromatin, confirming their epigenetic nature. Furthermore, the similar expression of several CVGs between parasites collected at different time points along the blood infection suggests that the epigenetic memory for multiple CVG families is lost during transmission stages, resulting in a reset of their transcriptional state. Finally, the CVG expression patterns observed in a volunteer likely infected by a single sporozoite suggest that new epigenetic patterns are established during liver stages. IMPORTANCE The ability of malaria parasites to adapt to changes in the human blood environment, where they produce long-term infection associated with clinical symptoms, is fundamental for their survival. CVGs, regulated at the epigenetic level, play a major role in this adaptive process, as changes in the expression of these genes result in alterations in the antigenic and functional properties of the parasites. However, how these genes are expressed under the natural conditions of the human circulation and how their expression is affected by passage through transmission stages are not well understood. Here, we provide a comprehensive characterization of the expression patterns of these genes at the onset of human blood infections, which reveals major differences with in vitro-cultured parasites. We also show that, during transmission stages, the previous expression patterns for many CVG families are lost, and new patterns are established.

RevDate: 2025-05-30
CmpDate: 2021-10-25

Tractenberg RE, Frost JK, Yumoto F, et al (2021)

Reliability of the Urinary Symptom Questionnaires for people with neurogenic bladder (USQNB) who void or use indwelling catheters.

Spinal cord, 59(9):939-947.

STUDY DESIGN: This is a descriptive psychometrics study.

OBJECTIVES: Neurogenic lower urinary tract dysfunction (NLUTD), also called Neurogenic Bladder (NB), is a common and disruptive condition in a variety of neurologic diagnoses. Our team developed patient-centered instruments, Urinary Symptom Questionnaires for people with neurogenic bladder (USQNB), specific to people with NLUTD who manage their bladders with intermittent catheterization (IC), indwelling catheters (IDC), or who void (V). This article reports evidence of reliability of the IDC and V instruments.

SETTING: Online surveys completed by individuals in the United States with NLUTD due to spinal cord injury (SCI), or multiple sclerosis (MS) who manage their bladder with IDC (SCI, n = 306), or by voiding (SCI, n = 103; MS, n = 383).

METHODS: Reliability estimates were based on endorsement of the items on the USQNB-IDC and USQNB-V. Reliability evidence was representativeness of these symptoms for a national sample (by determining if endorsement > 10%); internal consistency estimates (by Cronbach's alpha and item correlation coefficient, ICC); and interrelatedness of the items (by inferred Bayesian network, BN). We also tested whether a one-factor conceptualization of "urinary symptoms in NLUTD" was supportable for either instrument.

RESULTS: All items were endorsed by >20% of our samples. Urine quality symptoms tended to be the most commonly endorsed on both instruments. Cronbach's alpha and ICC estimates were high (>0.74), but not suggestive of redundancy. BNs showed interpretable associations among the items, and did not discover uninterpretable or unexpected associations. Neither instrument fit a one-factor model, as expected.

CONCLUSIONS: The USQNB-IDC and USQNB-V instruments show sufficient, multidimensional reliability for implementation and further study.

RevDate: 2021-10-25
CmpDate: 2021-10-25

Tractenberg RE, Frost JK, Yumoto F, et al (2021)

Validity of the Urinary Symptom Questionnaires for people with neurogenic bladder (USQNB) who void or use indwelling catheters.

Spinal cord, 59(9):948-958.

STUDY DESIGN: Descriptive Psychometrics Study OBJECTIVES: Neurogenic lower urinary tract dysfunction (NLUTD), or "neurogenic bladder" is a common and disruptive condition for individuals with spinal cord injury (SCI) and disease (including multiple sclerosis, MS). Our team has developed patient-centered instruments of urinary symptoms specific to patients with NLUTD, across bladder management methods. Validity evidence is needed to support the use of two new instruments, Urinary Symptom Questionnaires for people with Neurogenic Bladder (USQNB) for those who manage their bladder with indwelling catheters (IDC), or who void (V).

SETTING: Online surveys completed by individuals in the United States with NLUTD due to either SCI or MS who manage their bladder with indwelling catheters (SCI, n = 306; MS, n = 8), or by voiding (SCI, n = 103; MS, n = 383). A total of n = 381 USQNB-IDC respondents (five control groups), and 351 USQNB-V respondents (four control groups), contributed to our convergent and divergent validity evidence.

METHODS: Data were collected online to estimate key aspects of psychometric validity (content, reflection of the construct to be measured; face, recognizability of the contents as representing the construct to be measured; structural, the extent to which the instrument captures recognizable dimensions of the construct to be measured). Divergent and convergent validity evidence was derived from multiple control groups, while evidence of criterion validity was derived from attribution of each item to their experience "with a UTI".

RESULTS: Evidence of face, content, criterion, convergent, and divergent validity was compiled for each instrument.

CONCLUSIONS: The instruments demonstrate adequate, multi-dimensional, validity evidence to recommend their use for decision-making by patients, clinicians, and researchers.

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RJR Experience and Expertise

Researcher

Robbins holds BS, MS, and PhD degrees in the life sciences. He served as a tenured faculty member in the Zoology and Biological Science departments at Michigan State University. He is currently exploring the intersection between genomics, microbial ecology, and biodiversity — an area that promises to transform our understanding of the biosphere.

Educator

Robbins has extensive experience in college-level education: At MSU he taught introductory biology, genetics, and population genetics. At JHU, he was an instructor for a special course on biological database design. At FHCRC, he team-taught a graduate-level course on the history of genetics. At Bellevue College he taught medical informatics.

Administrator

Robbins has been involved in science administration at both the federal and the institutional levels. At NSF he was a program officer for database activities in the life sciences, at DOE he was a program officer for information infrastructure in the human genome project. At the Fred Hutchinson Cancer Research Center, he served as a vice president for fifteen years.

Technologist

Robbins has been involved with information technology since writing his first Fortran program as a college student. At NSF he was the first program officer for database activities in the life sciences. At JHU he held an appointment in the CS department and served as director of the informatics core for the Genome Data Base. At the FHCRC he was VP for Information Technology.

Publisher

While still at Michigan State, Robbins started his first publishing venture, founding a small company that addressed the short-run publishing needs of instructors in very large undergraduate classes. For more than 20 years, Robbins has been operating The Electronic Scholarly Publishing Project, a web site dedicated to the digital publishing of critical works in science, especially classical genetics.

Speaker

Robbins is well-known for his speaking abilities and is often called upon to provide keynote or plenary addresses at international meetings. For example, in July, 2012, he gave a well-received keynote address at the Global Biodiversity Informatics Congress, sponsored by GBIF and held in Copenhagen. The slides from that talk can be seen HERE.

Facilitator

Robbins is a skilled meeting facilitator. He prefers a participatory approach, with part of the meeting involving dynamic breakout groups, created by the participants in real time: (1) individuals propose breakout groups; (2) everyone signs up for one (or more) groups; (3) the groups with the most interested parties then meet, with reports from each group presented and discussed in a subsequent plenary session.

Designer

Robbins has been engaged with photography and design since the 1960s, when he worked for a professional photography laboratory. He now prefers digital photography and tools for their precision and reproducibility. He designed his first web site more than 20 years ago and he personally designed and implemented this web site. He engages in graphic design as a hobby.

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Cancer is the generic name for more than 100 diseases in which cells begin to grow and divide in an uncontrolled manner. Usually, when cells get too old or damaged, they die and new cells take their place. Cancer begins when genetic changes impair this orderly process so that some cells start to grow uncontrollably. The Emperor of All Maladies is a "biography" of cancer — from its first documented appearances thousands of years ago through the epic battles in the twentieth century to cure, control, and conquer it to a radical new understanding of its essence. This is a must read book for anyone with an interest in cancer. R. Robbins

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Reprints and preprints of publications, slide presentations, instructional materials, and data compilations written or prepared by Robert Robbins. Most papers deal with computational biology, genome informatics, using information technology to support biomedical research, and related matters.

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