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Bibliography on: Amyotrophic Lateral Sclerosis

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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 15 Feb 2026 at 01:34 Created: 

Amyotrophic Lateral Sclerosis

Amyotrophic lateral sclerosis (ALS), also known as motor neurone disease (MND) or Lou Gehrig's disease, is a neurodegenerative disease that results in the progressive loss of motor neurons that control voluntary muscles. ALS is the most common form of the motor neuron diseases. Early symptoms of ALS include stiff muscles, muscle twitches, and gradual increasing weakness and muscle wasting. Limb-onset ALS begins with weakness in the arms or legs, while bulbar-onset ALS begins with difficulty speaking or swallowing. Around half of people with ALS develop at least mild difficulties with thinking and behavior, and about 15% develop frontotemporal dementia. Motor neuron loss continues until the ability to eat, speak, move, and finally the ability to breathe is lost. Most cases of ALS (about 90% to 95%) have no known cause, and are known as sporadic ALS. However, both genetic and environmental factors are believed to be involved. The remaining 5% to 10% of cases have a genetic cause, often linked to a history of the disease in the family, and these are known as genetic ALS. About half of these genetic cases are due to disease-causing variants in one of two specific genes. The diagnosis is based on a person's signs and symptoms, with testing conducted to rule out other potential causes.

Created with PubMed® Query: ( ALS*[TIAB] OR "amyotrophic lateral sclerosis"[TIAB] ) NOT pmcbook NOT ispreviousversion

Citations The Papers (from PubMed®)

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RevDate: 2026-02-13

Anonymous (2026)

Intime Mitbewohner - Das Mikrobiom als unterschätzter Faktor in Klinik und Praxis.

Wiener klinische Wochenschrift, 138(3-4):127.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Pérez-Fuentes MDC, Molero Jurado MDM, Romanos-Rodríguez A, et al (2026)

Self-efficacy and Communication in Health Personnel After Simulation Training in Cardiopulmonary Resuscitation: A Quasi-experimental Study.

Inquiry : a journal of medical care organization, provision and financing, 63:469580251411471.

This study aimed to evaluate the impact of a simulation-based Advanced Life Support (ALS) training programme on the self-efficacy and communication of health personnel. The research focussed on whether such training could enhance both technical and non-technical skills, particularly in managing cardiopulmonary resuscitation (CPR) situations. A quasi-experimental pre- and post-intervention study was conducted in primary care centres across Andalusia, Spain. A total of 106 health personnel (doctors and nurses), aged 21 to 65 years, participated in the study. Participants completed questionnaires measuring self-efficacy and communication styles before and after a 27-hour blended ALS training programme, which incorporated high-fidelity simulation exercises. Communication was assessed across several dimensions, including expressiveness, preciseness, impression manipulativeness, and emotionality. Post-intervention analysis revealed significant changes in communication styles. Specifically, doctors exhibited a reduction in "impression manipulativeness," while nurses showed an increase in "expressiveness." Although self-efficacy scores improved slightly after the training, the changes were not statistically significant. Correlational analyses indicated that higher self-efficacy was positively associated with "expressiveness" and "preciseness," and negatively associated with "emotionality." In conclusion, simulation-based ALS training led to improved communication among health personnel, with distinct patterns emerging between doctors and nurses. While the simulation training did not significantly increase self-efficacy, the trends observed suggest potential benefits. These findings support the inclusion of simulation in continuing professional development programmes to strengthen non-technical skills essential for effective CPR performance.

RevDate: 2026-02-13

de Jesus H, Alves I, Lopes D, et al (2026)

Cognitive Dysfunction Is Associated With an Underestimation of Respiratory Function in ALS.

Muscle & nerve [Epub ahead of print].

INTRODUCTION/AIMS: The association between low forced vital capacity (FVC) and cognitive impairment in ALS is ambiguous; it could be due to respiratory dysfunction and/or poor effort from cognitive deficits. We used the objective, non-volitional phrenic nerve motor response amplitude (PAmp) to clarify how cognitive status affects the relationship between diaphragmatic strength and FVC.

METHODS: This retrospective study included 73 patients with ALS followed in our clinic. FVC and PAmp were measured, and cognitive status was assessed with the Edinburgh Cognitive and Behavioral ALS Screen (ECAS). Regression models tested for associations between FVC and distinct ECAS domains and whether these domains influenced the PAmp-FVC relationship.

RESULTS: PAmp (β = 0.58, p = 0.001) and its interaction with an abnormal ECAS's Executive score (β = -0.20, p < 0.045) were significant predictors of FVC. The latter indicated that patients with abnormal executive function had lower FVC than cognitively normal patients at similar PAmp values. Moreover, in patients with abnormal executive function, a reduction in PAmp was associated with a shallower decline in FVC. Severe bulbar dysfunction was also negatively associated with FVC (β = -0.22, p = 0.024).

DISCUSSION: FVC may underestimate respiratory capacity in cognitively impaired patients; therefore, we recommend non-volitional measures when evaluating ALS patients with executive dysfunction.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Cotto BA, Zhang L, Fait B, et al (2026)

Divergent mitochondrial and metabolic adaptations shape selective vulnerability in ALS.

bioRxiv : the preprint server for biology pii:2026.01.30.702552.

Neurodegenerative diseases like amyotrophic lateral sclerosis (ALS) exhibit striking cell-type selectivity, yet the basis for this vulnerability remains elusive. Here, we uncover that even closely related neurons can harbor distinct mitochondrial properties that shape their response to disease. Using TOM-Tag, a circuit-based AAV-based strategy for cell type-specific mitochondrial immunopurification from projection neurons, we performed integrative proteomic, metabolomic, transcriptomic, and functional analyses of mitochondria from ALS-vulnerable corticospinal projection neurons (CSPNs) and resilient corticothalamic projection neurons (CTPNs) in vivo. We discovered that CSPNs and CTPNs exhibit divergent mitochondrial profiles at baseline, despite sharing cortical layer and developmental origin. CTPNs were primed for antioxidant buffering and fatty acid metabolism, whereas CSPNs were enriched for oxidative phosphorylation components. In ALS, CTPNs employed mitochondrial flexibility and redox defense, whereas CSPNs exhibited respiratory failure and metabolic stress. These findings reveal that intrinsic mitochondrial programs vary even between similar neurons, and that this hidden layer of diversity may critically shape susceptibility to neurodegeneration. By enabling high-resolution access to mitochondria in defined neuronal circuits, TOM-Tag offers a powerful new lens for dissecting disease mechanisms and identifying cell-specific therapeutic targets.

RevDate: 2026-02-14

Goutman SA, Guo K, Park J, et al (2026)

Natural Killer Cell Dysregulation During ALS Disease Progression: A Gene Expression Analysis.

Neurology open access, 2(1):.

BACKGROUND AND OBJECTIVES: Amyotrophic lateral sclerosis (ALS) is a progressive and fatal neurodegenerative motor neuron disease with a pathophysiology that features dysregulated natural killer (NK) cells that are capable of damaging neurons. Although NK cells are associated with ALS progression and survival, their specific characteristics and how these characteristics change over the course of disease is unknown. The current study examines NK cell gene expression during ALS with the goal of identifying dysregulated genes and pathways in NK cells over the course of disease in order to identify potential new therapeutic targets.

METHODS: ALS participants with an El Escorial ALS diagnosis were recruited from the University of Michigan Pranger ALS Clinic, and control participants were recruited via internet-based notifications. Blood was collected from participants and NK cells were isolated from participants with ALS at two timepoints (baseline and longitudinal) and age- and sex-matched healthy controls at one timepoint. RNA was extracted from the NK cells and quantified using a transcript-counting technology for 578 immune-related genes. Differential gene expression analysis was used to identify individual genes that were dysregulated in ALS at baseline and longitudinally, While GO and KEGG pathway analyses were performed to identify dysregulated pathways at both timepoints.

RESULTS: NK cells from participants with ALS (n=36, median age 62.6 years (54.5-69.4), 50% female) showed a 2-fold or greater reduced expression of four pro-inflammatory genes at baseline relative to control participants (N=35, median age 64.3 years (55.2-71.8), 51% female) including IFNG, FCGR1A/B, and FAS; in ALS participants over 130 genes showed a 2-fold change in expression. Dysregulated genes and pathways at the later timepoint were related to cell polarization, activation, signaling, and cell-cell adhesion. In particular, genes associated with classical Type 1 inflammation decreased while Type 2 genes increased.

DISCUSSION: NK cells grow more dysregulated with ALS progression, shifting from a classical Type 1 phenotype to a Type 2 phenotype, though a larger study will be needed to confirm these initial findings. The findings also suggest NK cells contribute to early, but not late, ALS progression. Targeting specific NK cell pathways during early ALS may be a viable therapeutic strategy.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Chico L, Schirinzi E, Balestrini L, et al (2026)

Nrf2-Activating Natural Compounds in Neurodegenerative Diseases: Targeting Oxidative Stress and Protein Aggregation.

International journal of molecular sciences, 27(3):.

Neurodegenerative diseases (NDs) are among the leading causes of disability and mortality worldwide and are characterized by multifactorial pathogenesis involving interconnected mechanisms, such as oxidative stress, protein misfolding and aggregation, neuroinflammation, and mitochondrial dysfunction. Dysregulation of transcription factors, governing cellular defense responses, particularly nuclear factor erythroid 2-related factor 2 (Nrf2), a key regulator of antioxidant and proteostatic pathways, plays a critical role in neurodegenerative processes. Currently, available pharmacological treatments for NDs are largely symptomatic, as no disease-modifying therapies exist. Natural bioactive compounds have emerged as promising multi-target agents, demonstrating antioxidant, anti-aggregative, and anti-apoptotic properties, frequently mediated through activation of the Nrf2 signaling pathways. These compounds may represent valuable supportive strategies alongside conventional drug treatments, potentially contributing to the modulation of multiple pathogenic mechanisms. This review summarizes key oxidative stress- and protein aggregation-driven mechanisms underlying Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease. It further examines the neuroprotective potential of plant-, fungi-, and marine-derived natural compounds, with particular emphasis on Nrf2 activation. Beyond redox regulation, the broader role of Nrf2 in maintaining proteostasis is discussed. Overall, the review highlights Nrf2-inducing nutraceuticals as promising complementary, multi-target approaches for neuroprotection in NDs.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Auburger GWJ, Key J, Gispert S, et al (2026)

Bioinformatic Analyses of the Ataxin-2 Family Since Algae Emphasize Its Small Isoforms, Large Chimerisms, and the Importance of Human Exon 1B as Target of Therapies to Prevent Neurodegeneration.

International journal of molecular sciences, 27(3):.

Polyglutamine expansion in Ataxin-2 (ATXN2) is responsible for rare, dominantly inherited Spinocerebellar Ataxia type 2 (SCA2). Together with its paralog Ataxin-2-like (ATXN2L), both proteins have received much interest, since the deletion of their yeast and fly orthologs alleviates TDP-43-triggered neurotoxicity in Amyotrophic Lateral Sclerosis models. Their typical structure across evolution combines LSm with LSm-Associated Domains and a PAM2 motif. To understand the physiological regulation and functions of Ataxin-2 homologs, the phylogenesis of sequences was analyzed. Human ATXN2 harbors multiple alternative start codons, e.g., from an intrinsically disordered sequence (IDR) present since armadillo, or from the polyQ sequence that arose since amphibians, or from the LSm domain since primitive eukaryotes. Multiple smaller isoforms also exist across the C-terminus. Therapeutic knockdown of polyQ expansions in human ATXN2 should selectively target exon 1B. PolyQ repeats developed repeatedly, usually framed and often interrupted by (poly)Pro, originally near PAM2. The LSmAD sequence appeared in algae as the characteristic Ataxin-2 feature with strong conservation. Frequently, Ataxin-2 has added domains, likely due to transcriptional readthrough of neighbor genes during cell stress. These chimerisms show enrichment of rRNA processing; nutrient store mobilization; membrane strengthening via lipid, protein, and glycosylated components; and cell protrusions. Thus, any mutation of Ataxin-2 has complex effects, also affecting membrane resilience.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Jamerlan A, J Hulme (2026)

From Evasion to Collapse: The Kinetic Cascade of TDP-43 and the Failure of Proteostasis.

International journal of molecular sciences, 27(3):.

Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are devastating neurodegenerative diseases that, despite the availability of symptomatic and modestly beneficial treatments, still lack therapies capable of halting disease progression. A histopathological hallmark of both diseases is the cytoplasmic deposition of TDP-43 in neurons, which is attributed to both intrinsic (e.g., mutations, aberrant cleavage) and extrinsic factors (e.g., prolonged oxidative stress, impaired clearance pathways). Mutations and certain PTMs (e.g., cysteine oxidation) destabilize RNA binding, promoting monomer misfolding and increasing its half-life. Disruptions to core ubiquitin-proteasome system (UPS) subunits impede efficient processing, contributing to the clearance failure of misfolded TDP-43 monomers. The accumulation of monomers drives phase separation within stress granules, creating nucleation hotspots that eventually bypass the thermodynamic barrier, resulting in exponential growth. This rapid growth then culminates in the failure of the autophagy-lysosome pathway (ALP) to contain the aggregation, resulting in a self-sustaining feed-forward loop. Here, we organize these factors into a conceptual kinetic cascade that links TDP-43 misfolding, phase separation, and clearance failure. Therapeutic strategies must therefore move beyond simple clearance and focus on targeting these kinetic inflection points (e.g., oligomer seeding, PTM modulation).

RevDate: 2026-02-13
CmpDate: 2026-02-13

Czaj PV, Szewczyk-Golec K, Nuszkiewicz J, et al (2026)

Gut Dysbiosis and Microbiota-Derived Metabolites in Neurodegenerative Diseases: Molecular and Biochemical Mechanisms Along the Gut-Brain Axis.

Molecules (Basel, Switzerland), 31(3):.

Neurodegenerative disorders such as Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS) share key molecular features, including neuroinflammation, oxidative stress, mitochondrial dysfunction, and progressive neuronal loss. Increasing evidence indicates that gut dysbiosis and alterations in microbiota-derived metabolites are involved in these processes through multiple pathways along the gut-brain axis. However, while broad compositional changes are well-documented, a critical knowledge gap remains regarding the specific biochemical signal transduction pathways translating dysbiosis into pathology. This narrative review addresses this gap by synthesizing current human and experimental studies addressing gut microbiota alterations in AD, PD, and ALS, with particular emphasis on the biochemical and molecular mechanisms mediated by gut-derived metabolites. Dysbiosis in neurodegenerative diseases is frequently associated with reduced abundance of short-chain fatty acid (SCFA)-producing bacteria and altered metabolism of SCFAs, bile acids, tryptophan-derived indoles, trimethylamine-N-oxide (TMAO), and lipopolysaccharides (LPS). These microbial metabolites have been shown to modulate intestinal and blood-brain barrier integrity, influence Toll-like receptor- and G protein-coupled receptor-dependent signaling, regulate microglial activation, and affect molecular pathways related to protein aggregation in experimental models. In addition, emerging evidence highlights the involvement of oxidative and nitrosative stress, immune-metabolic crosstalk, and altered xenobiotic metabolism in microbiota-host interactions during neurodegeneration. By integrating microbiological, metabolic, and molecular perspectives, this review underscores the important and emerging role of microbiota-derived molecules in neurodegenerative disorders and outlines key chemical and metabolic pathways that may represent targets for future mechanistic studies and therapeutic strategies.

RevDate: 2026-02-13

Maritim B, Mbau R, Musiega A, et al (2026)

"Poverty is a social issue, not a mathematical problem": examining the lessons for beneficiary identification from implementation of the UHC indigent program in Kenya.

International journal for equity in health, 25(1):40.

BACKGROUND: Kenya rolled out a UHC indigent program aimed to expand financial protection and health service access for poor households through subsidized health insurance under the national insurer, National Health Insurance Fund (NHIF). As Kenya transitions to a new social health insurance framework under the Social Health Authority (SHA), understanding the implementation experience of the UHC indigent program is critical for informing the roll out of SHA’s indigent program.

METHODS: We conducted a qualitative process evaluation of the UHC indigent program using document reviews, semi-structured interviews with 23 key informants from national and county health authorities, development partners, and implementing actors, complemented by a validation workshop with 57 stakeholders. Our analysis was guided by Moore et al.‘s process evaluation framework and Wu et al.‘s policy capacity lens, examining implementation fidelity and capacities at multiple levels.

RESULTS: The program’s implementation deviated from its original centralized design, with counties exerting control over beneficiary identification due to national data gaps, incomplete rollout of the Harmonized Testing Tool, and political and operational constraints. Variations in targeting methods, reliance on under-resourced community health actors, and delays in biometric registration contributed to partial enrolment, limited access, exclusion errors, and mistrust. Although some counties reported increased service utilization, this was limited by unregistered dependents and lack of beneficiary awareness. Stakeholders expressed concern over SHA’s use of proxy means testing for identifying the poor, citing risks of exclusion, manipulation, and failure to capture locally constructed definitions of poverty.

CONCLUSION: Kenya’s experience demostrates the need to align national targeting frameworks with local realities, invest in policy capacity across stakeholders, and prioritize community validation and communication in subsidy programs. As SHA rolls out a new indigent program, these lessons offer critical guidance for enhancing fidelity, equity, and accountability.

RevDate: 2026-02-13
CmpDate: 2026-02-13

Jeong Y, HJ Yoon (2026)

Factors Influencing Retention at Their First Hospital Among New Graduate Nurses in South Korea.

Healthcare (Basel, Switzerland), 14(3): pii:healthcare14030314.

Background/Objectives: Early turnover among new graduate nurses remains challenging in South Korea. This study examined how socialisation factors-based on Scott et al.'s transition model and Herzberg's motivation-hygiene theory-are associated with early retention at the first hospital of employment among new graduate nurses. Methods: This retrospective cross-sectional study analysed secondary data from the Graduate Occupational Mobility Survey (GOMS), a nationally representative dataset of college and university graduates in Korea, collected using a stratified multi-stage sampling method. The study included 602 new graduate nurses from the 2017-2019 datasets who had worked as nurses at their first hospital of employment. Anticipatory socialisation factors included personal and educational characteristics. Organisational socialisation factors referred to workplace-related characteristics of the first hospital, including motivational factors and hygiene factors. The outcome variable was early retention. Multiple logistic regression analyses were performed to identify factors associated with early retention. Results: A total of 68.6% of nurses remained in their first hospital employment. Retention was more likely among nurses whose high school, nursing school, and first hospital were in the same region (p = 0.019), those employed in Seoul (p < 0.001), and those working in larger hospitals (p < 0.001). Retention was also associated with satisfaction with autonomy and authority (p = 0.013). Conversely, lower retention was observed among nurses who were dissatisfied with interpersonal relationships (p < 0.001) and those who reported satisfaction with growth opportunities (p < 0.001). Conclusions: Targeted strategies that support new graduate nurses during their transition are essential. Aligning education-to-employment regions and strengthening workplace conditions may enhance early retention.

RevDate: 2026-02-13

Kim MS, Nam Y, KT Kim (2026)

Ultrasonographic Measurements of Tongue Thickness and Swallowing Dysfunction in Amyotrophic Lateral Sclerosis: A Feasibility Study.

Annals of rehabilitation medicine pii:arm.250135 [Epub ahead of print].

OBJECTIVE: To explore whether ultrasonographic measurements of tongue thickness are associated with swallowing function and related clinical domains in patients with amyotrophic lateral sclerosis (ALS), this feasibility study was conducted. Few studies have examined the usefulness of ultrasonographic tongue thickness measurement in patients with ALS, but its association with physiological measures remains unclear.

METHODS: Ten patients with ALS underwent tongue thickness measurement using ultrasonography. Clinical assessments including the Korean version of the ALS Functional Rating Scale-Revised (K-ALSFRS-R), Functional Oral Intake Scale (FOIS), Eating Assessment Tool-10 (EAT-10), Dysphagia Handicap Index, Korean version of the Swallowing Quality of Life Questionnaire, Mini Nutritional Assessment-Short Form (MNA-SF), handgrip strength, and bioelectrical impedance analysis for skeletal muscle index (SMI) were performed. Swallowing physiology was evaluated using the Modified Barium Swallow Impairment Profile (MBSImP), Penetration-Aspiration Scale. Simple and partial Pearson's correlation analyses as well as univariate regression were performed with adjustments for age, sex, and body mass index (BMI).

RESULTS: Tongue thickness showed significant associations with multiple functional and systemic measures in the unadjusted analyses, including FOIS, EAT-10, MNA-SF, BMI, SMI, K-ALSFRS-R. After adjustment, the most consistent associations were observed with the MBSImP oral, pharyngeal, and combined phase scores.

CONCLUSION: Tongue ultrasonography may serve as a radiation-free method to preliminarily assess bulbar involvement in ALS. Tongue thickness was most specifically associated with dysphagia outcomes, particularly MBSImP. Given the feasibility design and small sample size, larger longitudinal studies are warranted to confirm its clinical utility in monitoring the progression of dysphagia in patients with ALS.

RevDate: 2026-02-12

Martínez-Hernáez Á, Insunza A, F Vidal (2026)

"Those eyes that look at you:" somatic modes of care in professional encounters with amyotrophic lateral sclerosis patients.

Social science & medicine (1982), 395:119065 pii:S0277-9536(26)00141-3 [Epub ahead of print].

In the advanced stages of amyotrophic lateral sclerosis (ALS), individuals experience a gradual and irreversible loss of speech and voluntary movement, while cognitive and emotional capacities often remain largely preserved. ALS frequently culminates in the locked-in state (LIS), where subjectivity endures despite an almost complete breakdown of expressive capacity. This article examines how professional caregivers sustain relational engagement and recognition under such conditions. The analysis draws on eleven qualitative interviews with social workers, psychologists, occupational therapists, nurses, and a neurologist working in Catalonia (Spain) in long-term home-based and community care for people with ALS. A hermeneutic phenomenological approach was used to explore how professionals perceive, interpret, and respond to patients whose expressive capacities have largely disappeared. Findings show that communication does not cease but is reconfigured into embodied forms such as gaze, muscle tone, breathing patterns, tears, and silence. Caregivers describe these signs as requiring perceptual attunement and temporal continuity. Building on Thomas Csordas's idea of somatic modes of attention, we conceptualize "somatic modes of care" as the embodied, affective, and ethical practices through which relation and subjectivity are sustained when language fails, a dimension inherent to all care, but rendered especially visible and indispensable in ALS and LIS. For professionals, personhood emerges as a fragile relational achievement upheld through recognition, memory, and sustained presence. Somatic modes of care thus offer an analytic lens for understanding how subjectivity is maintained under radical communicative constraints, with implications for clinical practice and for broader debates on care, embodiment, and relational ethics.

RevDate: 2026-02-12

Helal MM, Almosilhy NA, Abo-Elnour DE, et al (2026)

Targeting metabolic dysfunction in amyotrophic lateral sclerosis: therapeutic potential of GLP-1 receptor agonists.

Amyotrophic lateral sclerosis & frontotemporal degeneration [Epub ahead of print].

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by progressive motor neuron loss and profound systemic metabolic dysfunction, including hypermetabolism, weight loss, insulin resistance, and altered glucose and lipid homeostasis. Increasing recognition of these metabolic abnormalities has driven interest in repurposing antidiabetic therapies, particularly glucagon-like peptide-1 (GLP-1) and GLP-1 receptor agonists (GLP-1RAs), for ALS. Beyond their established metabolic actions, GLP-1RAs exert pleiotropic effects relevant to neurodegeneration, including modulation of neuroinflammation, mitochondrial function, oxidative stress, excitotoxicity, and cell-survival signaling, with selected agents demonstrating central nervous system penetration. This narrative review summarizes current knowledge on metabolic impairment in ALS and critically evaluates the mechanistic rationale, preclinical evidence, and emerging clinical data supporting or opposing the use of GLP-1-based therapies in this disease. Preclinical studies suggest that GLP-1 signaling can provide neuroprotective and neurotrophic effects in ALS models, although findings are heterogeneous and highly dependent on compound selection, delivery strategy, and experimental design. In contrast, available clinical evidence is limited and does not demonstrate therapeutic benefit in ALS, while raising important safety concerns, particularly related to weight loss, lean mass reduction, and altered glucose regulation, factors associated with a worse prognosis in ALS. Collectively, current data indicate that although GLP-1-based therapies may have compelling biological plausibility and beneficial effects in other neurodegenerative disorders (NDGs), their role in ALS remains uncertain and potentially harmful. Well-designed, ALS-specific clinical studies are required to clarify safety, efficacy, and patient selection before GLP-1RAs can be considered for therapeutic use in this vulnerable population.

RevDate: 2026-02-12

Johari M, Folland C, Saito Y, et al (2026)

Missense variants in TUBA4A cause myo-tubulinopathies.

Brain : a journal of neurology pii:8475507 [Epub ahead of print].

Tubulinopathies encompass a spectrum of disorders resulting from variants in genes encoding α- and β-tubulins, the key components of microtubules. While previous studies have linked de novo or dominantly inherited TUBA4A missense variants to neurodegenerative phenotypes, including amyotrophic lateral sclerosis, frontotemporal dementia, spastic ataxia, and recently, an isolated congenital myopathy, the full phenotypic and genotypic spectrum of TUBA4A-related disorders remains incompletely characterised. In this multi-centre study, we identified one previously reported and 12 novel TUBA4A missense variants in 31 individuals from 19 unrelated families. Remarkably, individuals in 17 families presented with a myopathy without any CNS involvement or history of such disease. In the remaining two families, we observed probands with cerebellar ataxia and epilepsy accompanying proximal and axial muscle weakness along with protein aggregation. The coexistence of neuromuscular and neurodegenerative features with protein aggregation defines a multisystem proteinopathy. These two families thus establish the first association between TUBA4A and multisystem proteinopathy. Our cohort exhibited diverse genotypes and inheritance patterns: four families demonstrated autosomal dominant transmission through heterozygous variants in TUBA4A, three probands had recessive inheritance due to homozygous variants, while the respective heterozygous carriers were asymptomatic; five probands carried de novo variants, and nine probands with heterozygous variants were classified as sporadic cases. Clinical phenotypes ranged from mild to severe myopathy, predominantly affecting the axial and paraspinal muscles. We observed a range of disease onset, from congenital to late adulthood. Creatine kinase levels were variable, ranging from normal to highly elevated. Cardiac function remained preserved across the cohort. Muscle biopsies showed heterogenous myopathic changes, including myofibre size variation, nemaline bodies, core-like regions, and internal nuclei. Immunohistochemical analysis revealed protein accumulations positive for TDP-43 (n=2), p62 (n=5), and TUBA4A (n=6). Complementary in silico and in vitro investigations suggested that the identified TUBA4A variants cause significant protein abnormalities and may differentially impact microtubule dynamics. Correlation analyses integrating clinical severity, variant location, and mechanistic readouts further demonstrated that domain specificity within TUBA4A influences both the pattern of muscle involvement and the extent of microtubule disruption. Our findings establish myo-tubulinopathies as distinct clinical entities, encompassing both primary myopathies and multisystem proteinopathies with muscle involvement. This study broadens the phenotypic and genotypic spectrum of TUBA4A-related disorders beyond autosomal dominant or de novo mechanisms and neurodegenerative presentations. These results underscore the importance of considering TUBA4A variants in the differential diagnosis of axial myopathies and multisystem proteinopathies, regardless of central nervous system (CNS) involvement.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Sinclair SJ, Haggerty G, Cowie KD, et al (2026)

Proclaiming a psychological assessment tool is "reliable, valid, and ethical" doth not make it so: A reply to Stein et al. (2026) and Jenkins (2026).

Psychological assessment, 38(3):253-265.

We thank Stein et al. (2026) and Jenkins (2026) for their commentaries on our critical review of the Social Cognition and Object Relations Scale-Global system as applied to the Thematic Apperception Test (Sinclair et al., 2023) and appreciate the opportunity to respond in kind. Although we acknowledge the considerable effort put into these response articles (analytically and conceptually), both fall short in addressing the myriad serious methodological and procedural concerns we raised in 2023 and do little to move the needle in support of this assessment technique. This article will review the many ways these responses misinterpret and misrepresent our original review and the voluminous methodological problems with the "meta-analyses" that are presented by Stein et al.-and the various ways they are statistically confounded, confusing, and scientifically unsound. Further, this article will highlight the considerable number of logical inconsistencies that are inherent within Stein et al.'s core arguments, as well as the numerous contradictions between Stein et al. and Jenkins-all of which seriously undermine the methodology itself. Given the many ethical ambiguities that arise as a result, we conclude with a repeat calling for a moratorium on this methodology until these issues are sufficiently resolved. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

RevDate: 2026-02-12
CmpDate: 2026-02-12

Jenkins SR (2026)

A conversation of methodological worldviews on Thematic Apperceptive Techniques (TATs): Commentary on Sinclair et al. (2023).

Psychological assessment, 38(3):244-252.

Sinclair et al.'s (2023) recent critique of the Social Cognition and Object Relations Scales-Global rating as used in clinical practice initiated a methodological conversation about its application to Thematic Apperception Test stories. Their critique included assertions about thematic apperceptive techniques more generally, such as the importance of standardization; normative data; psychometric approaches to validity and reliability; and cross-cultural generalizability. Since they cited two articles by me in some detail, not always accurately, I respond here with a discussion of the differing assumptions underlying narrative assessment methods, as compared to ability tests and structured self-report inventories, that I argue reflect differences in methodological worldviews and are supported by a history of empirical evidence. Those different assumptions shape construct conceptualization, response processes, score interpretation, sources of error variance, applicability of psychometric criteria used for more structured assessment methods, and the role of culture in the assessment process. Narrative methods require more suitable approaches to data collection, score interpretation, and evaluation of results than are available using normative tables and classical test theory. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

RevDate: 2026-02-12
CmpDate: 2026-02-12

Umesh SB, Sadanandan B, Marabanahalli Yogendraiah K, et al (2026)

The Impact of Zinc on Cellular Dynamics, Brain Function, and its Therapeutic Potential in Neuronal Regeneration.

Molecular neurobiology, 63(1):436.

Zinc is a vital trace element that plays a central role in maintaining brain function, regulating cellular dynamics, and promoting neuronal repair. As the second most abundant transition metal in the central nervous system, zinc is essential for neurotransmission, synaptic plasticity, and neurogenesis, processes that underlie higher cognitive functions such as learning and memory. Its homeostasis is tightly controlled, as dysregulation contributes to the onset and progression of neurodegenerative disorders including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. At the cellular level, zinc serves as a critical regulator of proliferation, differentiation, and survival, influencing the behavior of neural and mesenchymal stem cells. Through modulation of signaling pathways such as PI3K/Akt and MAPK, zinc governs cell growth, maturation, and neuroprotection. Physiological levels support axonal sprouting, neurite extension, and synaptic connectivity, whereas excessive release under pathological conditions exacerbates oxidative stress and excitotoxicity. Emerging evidence highlights zinc's therapeutic role in neuronal regeneration. Controlled supplementation enhances neurogenesis, reduces apoptosis, restores synaptic activity, and improves memory outcomes in experimental models of neural injury. Zinc-enriched biomaterials and scaffolds are also being developed for neural tissue engineering, where the incorporation of zinc enhances neurite outgrowth, cell adhesion, and network repair. Beyond neuroregeneration, zinc-based nanomaterials are gaining biomedical significance. Zinc oxide nanoparticles (ZnO NPs) exhibit potent anticancer activity against human cancer cell lines by inducing reactive oxygen species generation, DNA damage, and apoptosis. Additionally, other zinc nanoparticles, including zinc sulfide and zinc-doped biomaterials, show potential in tissue repair, wound healing, and drug delivery applications. Collectively, these findings underscore zinc's multifaceted role in neural function, regenerative biology, and nanomedicine. Advancing our understanding of zinc-mediated mechanisms may enable the development of novel zinc-targeted therapeutic strategies for treating neurodegenerative diseases and promoting functional recovery after brain injury.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Salamotas I, Stavropoulou De Lorenzo S, Stachtiari A, et al (2026)

From Dish to Trial: Building Translational Models of ALS.

Cells, 15(3):.

Amyotrophic lateral sclerosis (ALS) is the most common motor neuron disease, marked by progressive degeneration of upper and lower motor neurons. Clinically, genetically, and pathologically heterogeneous, ALS poses a major challenge for disease modeling and therapeutic translation. Over the past two decades, induced pluripotent stem cells (iPSCs) have reshaped our understanding of ALS pathogenesis and emerged as a promising translational platform for therapy development. ALS modeling has further expanded with the advent of three-dimensional systems, including ALS-on-chip platforms and organoid models, which better capture cell-cell interactions and tissue-level phenotypes. Despite these advances, effective disease-modifying therapies remain elusive. Recent clinical trial setbacks highlight the need for improved trial design alongside robust, translational iPSC models that can better predict therapeutic response. Nonetheless, the outlook is promising as large iPSC patient cohorts, quantitative phenotyping combined with genetically informed patient stratification, and reverse translational research are beginning to close the gap between in vitro discovery and clinical testing. In this review, we summarize the major advances in iPSC technology and highlight key iPSC-based studies of sporadic ALS. We further discuss emerging examples of iPSC-informed therapeutic strategies and outline the challenges associated with translating iPSC-derived mechanistic insights and pharmacological findings into successful clinical therapies.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Minuti A, Silvestro S, Muscarà C, et al (2026)

PCB 153 Modulates Genes Involved in Proteasome and Neurodegeneration-Related Pathways in Differentiated SH-SY5Y Cells: A Transcriptomic Study.

Cells, 15(3):.

Polychlorinated biphenyls (PCBs) are persistent environmental contaminants associated with neurotoxicity and increased risk of neurodegenerative diseases. PCB 153, a highly abundant non-coplanar congener, bioaccumulates in human tissues and impairs homeostasis. This study investigated the transcriptomic effects of PCB 153 (2,2',4,4',5,5'-Hexachlorobiphenyl) in retinoic acid (RA)-differentiated SH-SY5Y neuronal cells to identify early, sub-cytotoxic molecular alterations. Cell viability was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay after 24 h exposure to increasing PCB 153 concentrations. RNA-Seq was performed on cells treated with 5 μM PCB 153, the highest non-cytotoxic dose. Sequencing reads were quality-filtered, aligned to the human genome, and analyzed with DESeq2. Functional enrichment was conducted using Gene Ontologies and KEGG pathways. Western blot analyses were performed to assess protein level changes in selected targets. RNA-Seq identified 1882 significantly altered genes (q-value < 0.05). Gene Ontology analysis revealed strong enrichment of proteasome-related terms, with most proteasomal subunits displaying coordinated upregulation. KEGG analysis further showed significant enrichment of Alzheimer's (AD), Parkinson's (PD), amyotrophic lateral sclerosis (ALS), and other neurodegenerative disease pathways. These findings indicate that PCB 153 triggers a pronounced proteostatic response in neuron-like cells, suggesting early disruption of protein homeostasis that may contribute to mechanisms associated with neurodegeneration.

RevDate: 2026-02-12

Bjørnstadjordet M, Kvernmo HB, Bråthen G, et al (2026)

Four decades of ALS care: a retrospective study of epidemiology, clinical course and changes in management.

Amyotrophic lateral sclerosis & frontotemporal degeneration [Epub ahead of print].

BACKGROUND: Several interventions have been introduced for amyotrophic lateral sclerosis (ALS) in recent decades, and population-level studies investigating their use and impact are needed. This study describes the epidemiology, disease trajectory, and changes in clinical management of ALS in a county of Norway over a 38-year period.

METHODS: We conducted a retrospective chart review of all ALS cases diagnosed between 1986 and 2024 in Trøndelag county, Norway. Data were extracted from medical records using a standardized electronic case report form. Patients were stratified by time of diagnosis into four groups.

RESULTS: A total of 429 patients were included (56% male). Median age at symptom onset was 68 years. The age-standardized incidence of ALS was 3.32 per 100,000 person-years (95%CI 2.90-3.74) and increased over time (p = 0.002). Bulbar onset occurred in 38% of cases. Median diagnostic delay was 13 months (95%CI 12-14), without significant improvement over time. Median survival was 28 months (95%CI 26-31) from symptom onset, shorter among bulbar-onset patients. Use of riluzole, percutaneous endoscopic gastrostomy, and noninvasive ventilation (NIV) increased over the study period, whereas median survival remained stable. Emergency initiation of ventilation occurred in 25% (NIV n = 41/167) and 89% (invasive ventilation n = 16/18) of cases in which these treatment modalities were used.

CONCLUSION: This comprehensive regional study reveals a rising incidence of ALS in Trøndelag, with increased adoption of supportive interventions over time.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Patel T, Henna F, Sharif I, et al (2026)

A narrative review on the therapeutic potential of stem cells in neurodegenerative diseases: advances, insights, and challenges.

Annals of medicine and surgery (2012), 88(2):1441-1453.

BACKGROUND: Neurodegenerative diseases (NDs) such as Parkinson's disease (PD), Alzheimer's disease (AD), amyotrophic lateral sclerosis (ALS), Huntington's disease (HD) are set apart by progressive neuronal loss and concomitant functional decline. Traditional therapies are equipped with only symptomatic relief, devoid of neurorestorative properties. Stem-cell-based therapies have the potential to revolutionize neurological care by replenishing lost cells, mitigating inflammation, and fostering a neuroprotective environment.

OBJECTIVES: This narrative review aims to appraise the treatment potential of various stem cell types in managing NDs, highlighting their functional pathways, delivery methods, and current experimental validation.

METHODS: A comprehensive literature search was carried out based on data retrieved from PubMed, The Cochrane Library, and ClinicalTrials.gov. Thirty-one studies that fulfill PICO criteria and only English-language publications are incorporated in this review. No part of the study design, data collection, analysis, or interpretation was conducted using artificial intelligence.

RESULTS: Stem cells, including embryonic stem cells, mesenchymal stem cells (MSCs), induced pluripotent stem cells, and neural stem cells, possess distinctive regenerative properties. MSC-derived exosomes can traverse the blood-brain barrier and improve nerve cell longevity. Administration routes such as intravenous, intranasal, and direct brain transplantation are being studied. Neurodegenerative conditions such as PD, AD, HD, and ALS have been widely studied for therapeutic benefits.

CONCLUSION: Regardless of their potential, stem cell therapies raise health risks, including neoplastic growth and immunological incompatibility, alongside bioethical issues. Developments in genetic modification, nanotechnology, and preconditioning strategies are being analyzed to optimize outcomes. Long-term research, harmonization of protocols, and extended patient follow-up are essential for the safe and effective development of medical applications.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Jiang S, Chen F, Ma H, et al (2026)

Cloning and functional verification of endogenous U6 promoters for developing an efficient CRISPR/Cas9-mediated genome editing system in kenaf (Hibiscus cannabinus L.).

Research square pii:rs.3.rs-8660152.

The U6 promoter plays a pivotal role in the CRISPR/Cas9 system by driving the transcription of single guide RNA (sgRNA), which directs Cas9 to achieve precise genome editing. Endogenous U6 promoters typically exhibit superior transcriptional activation efficiency compared to exogenous counterparts, thereby enhancing the efficacy of genome editing. However, the endogenous U6 promoter in kenaf (Hibiscus cannabinus L.) remains uncharacterized. In this study, we conducted a homologous search of the kenaf genome using the Arabidopsis U6 (AtU6-26) RNA sequence as a reference, identifying two candidate promoters, HcU6-1 and HcU6-14. Promoter fragments were amplified from the genomic DNA of kenaf cultivar 'Fuhong 952' and subsequently cloned into a GUS fusion expression vector. Histochemical staining revealed transcriptional activity for both promoters, with HcU6-14 demonstrating significantly stronger activity. To evaluate editing efficiency, we constructed a CRISPR/Cas9 vector containing HcALS sgRNA, driven by either the kenaf U6-14P promoter or the cotton U6-9P (GbU6-9P) promoter. Kenaf hairy roots were regenerated via Agrobacterium rhizogenes K599-mediated transformation. Sequencing analysis of ALS gene fragments from these hairy roots confirmed successful targeted editing when using the kenaf U6-14P promoter, whereas no base mutations were detected with the cotton U6 promoter. These findings highlight the superior editing efficiency of the kenaf U6 promoter and provide a critical foundation for advancing functional genomics research in kenaf.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Yashooa RK, Nabi AQ, Smail SW, et al (2025)

CRISPR-Cas technologies in neurodegenerative disorders: mechanistic insights, therapeutic potential, and translational challenges.

Frontiers in neurology, 16:1737468.

CRISPR-Cas genome-editing technologies have emerged as powerful tools for precise DNA and RNA modulation, offering promising therapeutic strategies for neurodegenerative disorders such as Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), and amyotrophic lateral sclerosis (ALS). This review critically evaluates current CRISPR/Cas applications in neurodegeneration, with emphasis on mechanistic insights, therapeutic outcomes, and translational feasibility. Preclinical and early translational studies demonstrate that CRISPR-Cas platforms can correct pathogenic mutations, suppress toxic gene expression, and restore neuronal function. Advanced modalities, including base and prime editing, CRISPRi/a, and RNA-targeting Cas systems, improve precision and reduce genomic damage, which is particularly advantageous in post-mitotic neurons. Emerging CRISPR-based diagnostics (e.g., SHERLOCK and DETECTR), AI-assisted sgRNA design, and machine-learning approaches for predicting off-target effects further enhance the safety, stratification, and monitoring of CRISPR therapeutics. In parallel, patient-derived brain organoids and assembloids provide scalable human-relevant platforms for mechanistic studies and preclinical validation. Despite this progress, major challenges remain, including efficient delivery across the blood-brain barrier, immune responses, long-term safety, and ethical and regulatory considerations. Overall, CRISPR-Cas technologies hold strong potential as disease-modifying interventions for neurodegenerative disorders, provided that advances in delivery systems, artificial intelligence integration, and regulatory oversight continue to evolve toward clinical translation.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Qin X, L Liao (2025)

Graph transformer with disease subgraph positional encoding for improved comorbidity prediction.

Quantitative biology (Beijing, China), 13(4):e70008.

Comorbidity, the co-occurrence of multiple medical conditions in a single patient, profoundly impacts disease management and outcomes. Understanding these complex interconnections is crucial, especially in contexts where comorbidities exacerbate outcomes. Leveraging insights from the human interactome and advancements in graph-based methodologies, this study introduces transformer with subgraph positional encoding (TSPE) for disease comorbidity prediction. Inspired by biologically supervised embedding, TSPE employs transformer's attention mechanisms and subgraph positional encoding (SPE) to capture interactions between nodes and disease associations. Our proposed SPE proves more effective than Laplacian positional encoding, as used in Dwivedi et al.'s graph transformer, underscoring the importance of integrating clustering and disease-specific information for improved predictive accuracy. Evaluated on real clinical benchmark datasets (RR0 and RR1), TSPE demonstrates substantial performance enhancements over the state-of-the-art method, achieving up to 28.24% higher ROC AUC (receiver operating characteristic-area under the curve) and 4.93% higher accuracy. This method shows promise for adaptation to other complex graph-based tasks and applications. The source code is available at GitHub website (xihan-qin/TSPE-GraphTransformer).

RevDate: 2026-02-12
CmpDate: 2026-02-12

Xu H, Petrozziello T, Boudi A, et al (2026)

Transcriptomic profiling uncovers mis-splicing and gene fusions in amyotrophic lateral sclerosis.

medRxiv : the preprint server for health sciences pii:2026.02.05.26345503.

Advances in transcriptomics have transformed our understanding of amyotrophic lateral sclerosis (ALS), a progressive neurodegenerative disease, revealing disrupted gene expression profiles and highlighting the multi-system biology of ALS. Despite major advances, transcriptomic studies have only begun to capture the complexity and the molecular hierarchy of transcriptomic alterations in ALS. To resolve and characterize the transcriptome in ALS, we performed a comprehensive reanalysis of bulk RNA sequencing from the New York Genome Center ALS Consortium cohort across five post-mortem tissues including motor and frontal cortex, cervical and lumbar spinal cord, and cerebellum. By deploying dual analytical pipelines - one reference-based to model canonical events and one de novo to detect transcript structural novelties - we disentangled the quantitative and qualitative architectures of ALS. Our reference-based analysis revealed that ALS transcriptome is defined primarily by splicing failure rather than changes in gene expression. Aberrant splicing events, particularly intron retention, outnumbered differentially expressed genes by an order of magnitude. This widespread loss of fidelity disproportionately affected RNA-binding proteins, suggesting a collapse in their autoregulatory feedback loops. Deconvolution of these signals identified distinct cellular vulnerabilities: transcriptional disruptions were enriched in glial cells in sporadic cases but in neuronal cells in C9ORF72-positive cases. Furthermore, we observed sex-specific dysregulation, with male patients exhibiting greater disruption in guanosine triphosphatase signaling and ciliary organization pathways. In parallel, our de novo analysis uncovered a significant burden of disease-specific gene fusions that were absent in controls. Whole-genome sequencing of the same individuals, together with a larger reference population confirmed that disease-specific fusions do not arise from genomic structural variants, indicating a transcriptional rather than genomic origin. Investigation into the mechanism of these RNA-based fusions revealed a critical deviation in splice site definition: while canonical splice junctions exhibit a high density of binding motifs for polyA-binding or 3'-cleaveage proteins approximately 50 base pairs upstream of the splice donor site (left junction), ALS-specific fusion junctions displayed a dramatic depletion of these motifs in the same region. Functionally, the presence of these sparse disease-specific fusions was strongly correlated with severe splicing outliers in genes governing guanosine triphosphatase activity, converging with the tissue- and male-specific defects identified in our reference-based analysis. Altogether, our results delineated a transcriptome characterized by aberrant splicing with tissue-and sex-specific changes and identified structural-variant-independent RNA fusions as candidate disease modifiers that may amplify pathology. This integrated view provides a mechanistic scaffold for splicing-centered and RNA-structural therapeutic strategies for ALS.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Sun S, Xin J, Zhang Y, et al (2026)

p62/SQSTM1 Condensation Modulates Mitochondrial Clustering to Participate in Mitochondrial Quality Control.

Aging cell, 25(2):e70402.

Mitochondrial quality control is tightly associated with aging-related neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, amyotrophic lateral sclerosis (ALS), and frontotemporal dementia (FTD). Previous studies reported that ALS/FTD-associated protein p62 drives "mitochondrial clustering" (perinuclear clustering of fragmented and swollen mitochondria) during PINK1/Parkin-mediated mitophagy, but the underlying molecular mechanism, especially the precise role of p62 in mitochondrial clustering during mitophagy and the potential relationship between the mitochondrial quality control mediated by p62 and disease pathogenesis of ALS/FTD, remains unclear. Here, using cell biology in combination with an optogenetic tool, we show that the phase separation (condensation) of p62 mediates the clustering of damaged mitochondria to form "grape-like" clusters during PINK1/Parkin-mediated mitophagy, which is tightly associated with aging-related neurodegenerative diseases. In addition, our data suggest this mitochondrial clustering process is an arrest mechanism driven by p62 condensation (beyond the function of other autophagy receptors in mitophagy), which acts as a "brake" to reduce the surface area of dysfunctional mitochondria within cytoplasm for minimizing mitochondrial turnover in cells. Moreover, ALS/FTD-related pathological mutations perturb p62 condensation, thereby inhibiting mitochondrial clustering and destroying the "brake" machinery of mitochondrial quality control. Together, our data highlight how p62 condensation modulates organelle quality control in cell biology, and the important role of p62 condensation in both physiology and pathology.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Zheng W, Xu L, Cai J, et al (2026)

Comprehensive clinical and genetic architecture of familial amyotrophic lateral sclerosis in China: A 15-year cohort study with 302 families.

Neural regeneration research, 21(6):2573-2579.

JOURNAL/nrgr/04.03/01300535-202606000-00072/figure1/v/2026-02-11T151048Z/r/image-tiff The growing recognition of the role of genetics in the development of amyotrophic lateral sclerosis is evident. However, there has yet to be a comprehensive analysis of the clinical characteristics and genetics of familial amyotrophic lateral sclerosis in an Asian population. This study aimed to provide an in-depth analysis of the clinical features and genetic spectrum of familial amyotrophic lateral sclerosis over 15 years in a clinic-based cohort of patients from the Chinese mainland. Enrollment of 302 amyotrophic lateral sclerosis families from 28 provinces was undertaken from January 2008 to September 2023. A group-based trajectory model for disease progression based on amyotrophic lateral sclerosis Functional Rating Scale-Revised (ALSFRS-R) scores was validated using bootstrap internal validation in patients with familial amyotrophic lateral sclerosis, as well as patients with sporadic amyotrophic lateral sclerosis (matched at a 1:4 ratio, with replacement). DNA samples from 244 index patients were screened for variants in the pathogenic genes SOD1, FUS, TDP43, and C9ORF72, of which 146 were also subjected to genome-wide next-generation sequencing. Gene-level burden analysis was used to evaluate the distribution of rare variants in the cohort. We found that rapid dynamic disease progression was associated with an older age at onset, shorter diagnostic delay, lower body mass index, bulbar onset, and ≥ 1 affected first-degree relative. Certain attributes, such as age at onset and time from onset to diagnosis, had comparable impacts on the clinical progression trajectories of both familial amyotrophic lateral sclerosis and sporadic amyotrophic lateral sclerosis. Harboring pathogenic/likely pathogenic variants in amyotrophic lateral sclerosis-causative genes reduced the age of onset of familial amyotrophic lateral sclerosis. Among the patients with familial amyotrophic lateral sclerosis, 17.8% possessed ≥ 2 pathogenic/likely pathogenic variants. Sequencing kernel association test analysis showed that the SOD1 rare variant burden (P = 1.3e-15) was associated with a significant risk of familial amyotrophic lateral sclerosis. Our findings conclusively confirmed the clinical features and genetic spectrum of familial amyotrophic lateral sclerosis over 15 years in a clinical cohort from China, contributing to a deeper understanding of genotype-phenotype relationships in familial amyotrophic lateral sclerosis. This comprehensive evaluation of specific clinical characteristics, clinical prognosis, and genetic variants of amyotrophic lateral sclerosis based on detailed clinical and genetic information may lead to the development of genotype-specific treatment approaches.

RevDate: 2026-02-12
CmpDate: 2026-02-12

Sharma S, Vandenakker A, Cortés-Pérez C, et al (2026)

Implications of virus-induced stress granules in tauopathies.

Translational neurodegeneration, 15(1):4.

Tauopathies are characterized by aberrant tau structure and function, which is associated with neurodegenerative dementias, such as Alzheimer's disease, Pick's disease, and frontotemporal dementia, as well as the motor neuron disease amyotrophic lateral sclerosis. Consistent association of these neurodegenerative conditions with viruses suggests an interplay between viral activity and the development of tauopathy. In this review, we explore how tau dysregulation may facilitate viral activity, and conversely, how viruses may drive tauopathy. We further discuss how stress granules (SGs) are a likely hub for the interactions between tau and viral components, leading to tau deregulation. Within the network of SG proteins analyzed, 15 proteins were identified to be both tau interactors and implicated in viral processes, having dual functionality. These SG proteins are further discussed in terms of their relationship with tauopathy, viral replication, and neurodegeneration. Concrete examples of synergistic and competing effects between tau and viruses are highlighted, revealing both pathological and protective mechanisms. This dichotomy underscores a complexity that is both disease- and virus-specific, within the context of SG biology and tau pathology. While the viral involvement in tauopathies could be considered detrimental, it may provide insights into antiviral therapeutics to target the accumulation and misfolding of tau in these neurodegenerative diseases.

RevDate: 2026-02-11

Ali M, Biswas A, Iglseder A, et al (2026)

Terrestrial and Airborne Laser Scanning Dataset of Trees in the Shivalik Range, India with Field Measurements and Leaf-Wood Classifications.

Scientific data pii:10.1038/s41597-026-06674-w [Epub ahead of print].

Annotated datasets are essential for training and evaluating machine learning models in forest ecology. This dataset provides high-resolution, annotated LiDAR point clouds of 674 individual trees from 12 forest plots in the Shivalik Range of northern Haryana, India, representing 24 species. Data were acquired using Terrestrial Laser Scanning (TLS) and Airborne Laser Scanning (ALS), include field-measured attributes such as species identity and Diameter at Breast Height (DBH), and terrestrial and aerial RGB imagery. TLS point clouds were georeferenced and co-registered with centimetre-level accuracy, enabling precise integration with ALS data. The dataset includes segmented individual trees and wood-leaf classifications, suitable for applications such as tree morphology analysis, biomass estimation, and species classification. To support benchmarking, outputs from established classification algorithms (LeWoS, TLSeparation, CANUPO, and Random Forest) are included. As one of the first open-access LiDAR datasets from Indian tropical forests, it provides critical reference data for developing and validating forest structure models. It can also aid biomass mapping efforts in support of large-scale missions such as NASA-ISRO's NISAR and ESA's BIOMASS.

RevDate: 2026-02-11

Takubo M, Matsumoto Y, Sasaki C, et al (2026)

Response to the Letter by Dr. Zarrouk et al.

Internal medicine (Tokyo, Japan) [Epub ahead of print].

RevDate: 2026-02-11

Zarrouk S, J Finsterer (2026)

SCA3 Can Manifest Phenotypically with ALS-like Characteristics.

Internal medicine (Tokyo, Japan) [Epub ahead of print].

RevDate: 2026-02-12

Maneu V, AG García (2026)

P2X7 receptors as targets for neuroprotection.

Neuropharmacology, 289:110877 pii:S0028-3908(26)00050-X [Epub ahead of print].

In this review we explore the potential of P2X7 receptor blockers to elicit neuroprotection. This conjecture is based on a reasonably well-established role of this receptor in activating glial cells to maintain a chronic low-level neuroinflammatory state in the brain of patients suffering some neurodegenerative diseases (NDDs). In this context we briefly discuss evidence supporting the role of P2X7 receptors (P2X7) in the pathogenesis of Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Huntington's disease, multiple sclerosis, and retinal degeneration. From a pathogenic point of view these diseases have specific features but all share a low level neuroinflammatory state with microglia activation and enhanced P2X7 expression. Next, we comment on available P2X7 blockers with central nervous system (CNS) target engagement. Then, we deal with the proof-of-concept concerning the potential of some blockers to mitigate the neuroinflammatory state in preclinical models of the target diseases above mentioned. We follow with a discussion of the scarce number of clinical trials done with some P2X7 blockers in inflammatory diseases. Finally, we discuss the current discrepancy between promising preclinical data and the limited number of clinical trials exploring P2X7 antagonists in NDDs. We provide some clues that may boost clinical trials with single P2X7 blockers but particularly, with their association with other medicines currently being used or that are intended to be prescribed in the treatment of NDDs.

RevDate: 2026-02-11

Prova NS, Elsayyid MW, JE Tanis (2026)

Superoxide dismutase impacts extracellular vesicle shedding and uptake.

Free radical biology & medicine pii:S0891-5849(26)00105-X [Epub ahead of print].

Extracellular vesicles (EVs), which transfer bioactive macromolecules between cells, play a critical role in the pathogenesis of multiple neurodegenerative diseases. Focus has centered on how altered EV contents propagate disease and on the potential for EVs as diagnostic biomarkers, while the effects of pathogenic factors on EV release are poorly understood. Using a functional endogenous reporter, we showed that the key antioxidant enzyme superoxide dismutase 1 (SOD-1) is expressed in C. elegans EV-releasing neurons, localizes to the cytoplasm, and reduces levels of reactive oxygen species (ROS). We then defined how sod-1 mutations affect EV shedding from sensory neuron primary cilia into the environment, ciliary enrichment of proteins packaged into EVs, and glial uptake of EVs in vivo, by imaging C. elegans expressing fluorescent protein-tagged EV cargoes. Deletion of SOD-1, as well as the SOD-1(G85R) amyotrophic lateral sclerosis (ALS) pathogenic variant, increased EV shedding from the cilium distal tip, and this was associated with greater abundance of EV cargo in this ciliary compartment. In contrast, loss of SOD-1 reduced the glial uptake of a different EV subpopulation that is shed from the ciliary base, without affecting release into the environment. These results demonstrate that SOD-1 has a subtype-specific effect on the release of EVs with distinct signaling potentials. Intriguingly, we discovered that exposure to paraquat, which increases mitochondrial ROS, reduced the shedding of both distal tip and ciliary base-derived EVs. These opposing effects of the sod-1 mutations and paraquat treatment on EV release suggest that subcellular ROS compartmentalization may serve as a mechanism to regulate ciliary EV shedding.

RevDate: 2026-02-11

Shi M, Ge W, Li C, et al (2026)

Versatile CRISPR-Cas Tools for Gene Regulation in Zebrafish via an Enhanced Q Binary System.

Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Epub ahead of print].

CRISPR-Cas systems revolutionize gene regulation across diverse organisms, including zebrafish. However, most zebrafish studies still rely on transient delivery of CRISPR components, with limited use of transgenic models, primarily restricted to Cas9-mediated knockouts. This limitation arises from challenges in achieving sustained, tissue-specific, and efficient expression of transgenic CRISPR effectors. To address these challenges, we introduce CRISPR-Q, a transgenic system that combines the QFvpr/QUAS binary expression platform with CRISPR-Cas technologies. CRISPR-Q overcomes the drawbacks of transient mRNA or protein delivery and circumvents the toxicity and transgene silencing issues associated with other binary systems, such as Gal4/UAS. The system enables robust and spatiotemporal expression of CasRx or dCas9vpr, allowing precise transcript knockdown (CRISPR-QKD) or gene activation (CRISPR-Qa). Using CRISPR-QKD, we achieve effective knockdown of smn1 and simultaneous knockdown of tardbp and tardbpl, modeling spinal muscular atrophy and amyotrophic lateral sclerosis, respectively. CRISPR-Qa activates endogenous lin28a and sox9b, demonstrating its functional versatility. We further validate CRISPR-Q's tissue-specific applicability in heart-specific transgenic zebrafish. Together, CRISPR-Q represents a robust and versatile platform for studying gene function and modeling human diseases in zebrafish, with broad potential for adaptation in other model organisms.

RevDate: 2026-02-11
CmpDate: 2026-02-11

Thorarinsson BL, Sveinsson OA, Hilmarsson A, et al (2026)

Treating SOD1-ALS with tofersen results in nonprogressive chronic ALS-a case series from Iceland.

Journal of neurology, 273(2):140.

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder. We describe four patients with hereditary ALS caused by the p.Gly94Ser SOD1 mutation who were treated monthly with the intrathecal antisense oligonucleotide tofersen in a clinical setting at Landspitali University Hospital of Iceland. After initiating treatment 15-26 months ago, no significant clinical deterioration was observed, and three patients showed signs of clinical improvement, with some recovery of motor function. All four patients currently present with chronic nonprogressive ALS, a phenotype not previously observed or documented. Concomitantly, the concentration of neurofilament light chain (Nf-L) in the cerebrospinal fluid decreased to the normal range. This clinical benefit and decrease in Nf-L levels were detected regardless of the patient's initial ALSFRS-R score. No serious adverse events were observed. Notably, we observed a clinically meaningful effect in two patients who had been ill for several years before treatment was instituted, raising questions about who should receive treatment and the biology of paresis and motor neuron cell loss in patients with ALS. Although only a minority of ALS patients carry a SOD1 mutation, the advent of this new precision medicine has profound implications for ALS management.

RevDate: 2026-02-11

Nadeem H (2026)

Amyotrophic Lateral Sclerosis and Frontotemporal Dementia Have Distinct Prediagnostic Blood Biochemical Profiles.

RevDate: 2026-02-11
CmpDate: 2026-02-11

Masataka Y, T Matsumoto (2026)

In Response to "Concerns Regarding Masataka et al.'s 'Revisiting the Gateway Drug Hypothesis for Cannabis'".

Neuropsychopharmacology reports, 46(1):e70093.

We clarify Dr. Narita's concerns by replacing subjective wording with data-based statements, emphasizing the descriptive-not causal-nature of our analysis, and noting that logistic regression was exploratory. Our findings show both progression and non-progression pathways, indicating no single dominant gateway pattern among Japanese cannabis users.

RevDate: 2026-02-11
CmpDate: 2026-02-11

Lillard AS (2026)

Why Does Fantasy in Screen Media Deplete Children's Executive Function?.

Developmental science, 29(2):e70143.

In response to Hinten et al.'s (2025) meta-analysis of the impact of fantasy and fast pacing in screen media on young children, I present an information processing model in effort to explain the fantasy effect. Drawing on important work by Lang, I discuss how media might be processed, and why fantasy events could be particularly problematic. In essence, they may overload the cognitive system, which is trying to make sense of impossible events without the benefit of existing schemas that would reduce cognitive load. SUMMARY: We need better theory to guide research on why fantasy impairs executive function. Some ideas are provided here.

RevDate: 2026-02-11

Cao MC, Swanson MEV, Basak I, et al (2026)

Lost in translation: absence of KIAA1324/ELAPOR1 protein in pathological TDP-43-affected neurons in ALS/FTD.

Acta neuropathologica communications pii:10.1186/s40478-026-02237-7 [Epub ahead of print].

BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a movement disorder lacking effective diagnostics and therapeutics, largely due to its clinical and etiological heterogeneity. The unifying hallmark of TDP-43 pathology is found in approximately 97% of ALS patients, and 50% of frontotemporal dementia (FTD) patients. Indeed, TDP-43 has a central role in ALS/FTD disease mechanisms. An mRNA target of TDP-43 loss of function, KIAA1324/ELAPOR1, is consistently upregulated in various RNA-sequencing datasets from systems with TDP-43 depletion.

METHODS: This study sought to investigate the TDP-43 target gene, KIAA1324, in the context of human brain tissue. We performed immunohistochemistry and image analysis on 10 ALS and 10 control brains to quantify the protein levels of KIAA1324 in TDP-43 pathology-affected cells. We then used immunocytochemistry of iPSC-derived neurons and mass spectroscopy of SH-SY5Y cells to investigate the relationship between KIAA1324 mRNA and the function of its cognate protein KIAA1324.

RESULTS: KIAA1324 expression was enriched in neurons in the human brain. While KIAA1324 mRNA increased in iPSC-derived neurons with TDP-43 depleted from the nucleus in vitro, in human post-mortem brain neurons, KIAA1324 protein was significantly decreased (p < 0.05) in cells with pathological TDP-43 (nuclear-cleared TDP-43 and cytoplasmic, phosphorylated TDP-43). This may be due to the alternative polyadenylation of KIAA1324 detected with TDP-43 depletion from iPSC-derived neurons, hypothesised to affect translation efficiency. Mass spectrometry of SH-SY5Y cells revealed that overexpression of KIAA1324 protein affects a network of mitochondrial proteins.

CONCLUSIONS: The clear inverse relationship between KIAA1324 mRNA levels and TDP-43 function, and the near complete absence of KIAA1324 protein from neurons with pathological TDP-43 in post-mortem brain tissue, suggests KIAA3142 function is impaired in TDP-43 proteinopathies. Therefore, in addition to there being various disease mechanisms implicated in ALS, and TDP-43 being a challenging disease target to restore, KIAA1324 emerges as another of the many targets downstream of TDP-43 that may need to be addressed to demonstrate a therapeutic effect in ALS/FTD.

RevDate: 2026-02-12

Sun W, Luan H, Li S, et al (2026)

Circulating adipokines level and the risk of neurodegenerative diseases: a two‑sample mendelian randomization study and proteomic analysis.

BMC neurology, 26(1):90.

BACKGROUND: Observational studies have suggested associations between circulating adipokines and neurodegenerative diseases, but the causal nature of these relationships remains unclear. This study evaluated the causal effects of adipokines on neurodegenerative diseases using Mendelian randomization (MR) and validated key findings through proteomic analysis.

METHODS: Two-sample MR was performed using genome-wide association study (GWAS) summary statistics for adiponectin (N = 39,883), leptin (N = 57,232), resistin (N = 21,758), and monocyte chemoattractant protein-1 (MCP-1; N = 21,758). Outcomes included Alzheimer’s disease (AD; N = 63,926), Parkinson’s disease (PD; N = 482,730), and amyotrophic lateral sclerosis (ALS; N = 36,052). The inverse-variance weighted (IVW) method was applied for primary causal estimates, with sensitivity analyses assessing pleiotropy and heterogeneity. Significant MR findings were further examined in a proteomic cohort.

RESULTS: Higher genetically predicted adiponectin levels were significantly associated with a reduced risk of AD (odds ratio [OR] = 0.79, 95% confidence interval [CI] = 0.65–0.96, p = 0.019). This association remained robust across multiple sensitivity analyses, with no evidence of horizontal pleiotropy or heterogeneity. By contrast, no causal relationships were identified for leptin, resistin, or MCP-1 with the risk of AD, PD, or ALS. Complementing the genetic findings, proteomic analysis further revealed that plasma adiponectin levels were downregulated in mild cognitive impairment patients who experienced cognitive deterioration compared with those showing cognitive improvement.

CONCLUSION: The findings provide genetic evidence supporting a potential protective role of adiponectin in AD, with the proteomic results offering complementary, directionally consistent support. Adiponectin may represent a potential biomarker and therapeutic target for AD.

SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12883-026-04636-8.

RevDate: 2026-02-10

Garnier M, Gouju J, Rousseau A, et al (2026)

Exploratory assessment of phosphorylated TDP-43 immunoreactivity in minor salivary glands of patients with ALS.

Acta neuropathologica communications pii:10.1186/s40478-026-02251-9 [Epub ahead of print].

RevDate: 2026-02-10

Vicencio E, Gomez L, Beltran S, et al (2026)

FAM120A - a protein inserted in the ALS disease network.

Scientific reports pii:10.1038/s41598-026-39329-2 [Epub ahead of print].

RevDate: 2026-02-10

Maidi AZM, Suram RP, Deniz Y, et al (2026)

Heart rate variability as a non-invasive biomarker of autonomic dysfunction in amyotrophic lateral sclerosis: A systematic review and meta-analysis.

Autonomic neuroscience : basic & clinical, 264:103393 pii:S1566-0702(26)00015-9 [Epub ahead of print].

OBJECTIVE: This study assessed heart rate variability (HRV) alterations in amyotrophic lateral sclerosis (ALS) patients compared to healthy control groups using both frequency-domain and time-domain HRV parameters.

METHODS: A systematic review and meta-analysis were conducted using studies retrieved from PubMed, Embase, Web of Science, and Cochrane Library databases up to November 13, 2024. Fourteen studies were included in the qualitative synthesis and eight in the quantitative analysis.

RESULTS: ALS patients exhibited significantly reduced Low Frequency (LF) and High Frequency (HF) HRV parameters compared to healthy controls (p < 0.001 and p = 0.02, respectively). Time-domain parameters also showed significant reductions: RMSSD (p < 0.001), SDNN (p < 0.001), and pNN50% (p = 0.01). Despite an overall decrease in HRV, the LF/HF ratio did not show a statistically significant difference (p = 0.12).

CONCLUSION: Patients with ALS demonstrate autonomic dysfunction, evidenced by significant reductions in key time-domain (RMSSD, SDNN, pNN50%) and frequency-domain (LF, HF) parameters, suggesting impaired parasympathetic modulation. HRV may serve as a valuable, non-invasive biomarker for the early detection and management of cardiorespiratory complications in ALS.

RevDate: 2026-02-10

Jin J, Wang H, Daly I, et al (2026)

A Fully Unsupervised Online Classification Algorithm for Event-Related Potential based Brain-Computer Interfaces.

IEEE transactions on bio-medical engineering, PP: [Epub ahead of print].

OBJECTIVE: Brain-computer interfaces (BCIs) based on event-related potentials (ERPs) are among the most accurate and reliable BCIs. However, current mainstream classification algorithms struggle to eliminate the need for calibration and rely on expensive labeled data, limiting the practical usability of ERP based BCIs. The development of fully unsupervised algorithms is essential for the advancement of practical applications of BCI systems.

METHODS: In this study, we propose a novel unsupervised classification method called sliding-window distribution distance maximization (sDDM). This algorithm utilizes sliding windows to highlight important temporal features and transforms the metric of inter-class differences from absolute distances to relative distribution distances in Mahalanobis space, while incorporating information on target event similarity from the BCI paradigm. Additionally, our proposed spatial dimensionality reduction strategy ensures smaller spatial dimensions and more prominent spatial features.

RESULTS: We compare our proposed method to other state of-the-art unsupervised classification methods and evaluate it offline on our self-collected dataset, a public dataset recorded during the use of a P300 Speller by patients with ALS, and the BCI Competition III Dataset II. Our results demonstrate that our proposed method achieves the best spelling accuracy across all datasets, surpassing other unsupervised algorithms. We further explore its improvement effectiveness through ablation experiments.

CONCLUSION: Our proposed method enhances the performance of unsupervised classification in ERP-based BCIs.

RevDate: 2026-02-10
CmpDate: 2026-02-10

Peter AS, Kandasamy I, Ranjith S, et al (2026)

Recombinant AMPs (Epinecidin-1 and its Variants): A New Hope against Invasive Fungal Infections against Candida spp. and Aspergillus flavus.

Current microbiology, 83(4):168.

To enhance stability and antimicrobial efficacy of antimicrobial peptide (AMP) epinecidin-1, we previously engineered three variants - GK-epi-1, Variant-1 and Variant-2-by substituting alanine and histidine residues with lysine. Our current study focuses on the antifungal capabilities of Epinecidin-1 and its variants against the clinical isolates of Candida spp. (Candida albicans, C. tropicalis, C. krusei & C. glabrata) and Aspergillus flavus. Computational docking studies are evidenced, the peptides had strong affinity against all fungal receptor examined which indicates their efficacy to interact with the Candida cell membrane receptors (Exo-B-(1,3)-Glucanase, Secreted aspartic proteinase (SAP) 1 & N-terminal domain adhesin: Als 9 - 2). Minimum Inhibitory Concentration (MIC), Minimum Fungicidal Concentration (MFC) and antibiofilm assays revealed its potent antifungal activity, particularly in disrupting biofilm formation. Effects of peptides on hyphal growth inhibition activity and Scanning Electron Microscopy (SEM) confirmed that the mechanism of action involves pore formation, hyphal disruption and induction of reactive oxygen species in Candida cell membrane. The antifungal spectrum was extended to A. flavus, a known ocular pathogen, where combination therapy using sub-inhibitory concentrations of Epinecidin-1 and its variant peptides with Amphotericin B and Miconazole showed enhanced synergistic effects, reducing required dosages for effective pathogen control.

RevDate: 2026-02-10
CmpDate: 2026-02-10

Giacomini PS, Voss P, Devonshire V, et al (2026)

Eye tracking as a digital biomarker in neurodegenerative diseases.

Journal of neurology, 273(2):133.

Oculomotor abnormalities are a common finding in neurodegenerative diseases due to degeneration of neural pathways and brain regions involved in controlling eye movements. Pathological changes to the dorsolateral prefrontal cortex, basal ganglia, superior colliculus and cerebellum produce subtle changes in eye-movement metrics that may not be detected by clinical examination. The present review addresses the potential use of eye-movement biomarkers in neurodegenerative conditions such as multiple sclerosis, Parkinson's disease, Alzheimer's disease and other dementias, and amyotrophic lateral sclerosis. Eye-movement metrics such as saccades, anti-saccades, fixation and smooth pursuit are prognostic of disease progression, can differentiate pathologic subtypes as an aid to diagnosis, and enable clinicians to evaluate early worsening of motor and cognitive function. The cost of medical technologies limits their optimal use and accessibility in clinical practice. The shortage of subspecialist neurologists further limits access to care. New eye-tracking technologies incorporated into widely-accessible digital devices such as smart phones and tablets now permit detailed assessments with minimal equipment requirements, providing an important non-invasive and potentially cost-effective method for patient evaluation in routine clinical practice and as an aid to treatment decision-making. Digital biomarkers can be readily employed by healthcare professionals such as family physicians, nurses and pharmacists to bridge the care gaps, potentially providing them with powerful tools that can be broadly adopted to improve the delivery of care to patients with neurodegenerative conditions.

RevDate: 2026-02-10

Chiò A, A Calvo (2026)

Before Symptoms Begin: Immune Activation in Preclinical ALS.

Annals of neurology [Epub ahead of print].

RevDate: 2026-02-10

Grassano M, Palumbo F, Mora G, et al (2026)

Sex-Specific Genetic Architecture of ALS: Evidence of a Female Protective Effect?.

Annals of neurology [Epub ahead of print].

BACKGROUND: Amyotrophic lateral sclerosis (ALS) shows sex differences in incidence and age of onset, yet the underlying biological mechanisms remain poorly understood.

METHODS: We investigated sex-specific genetic architecture in an Italian ALS cohort with whole-genome sequencing (1,333 ALS cases, 755 controls). We performed a sex-stratified burden analysis of rare variants in ALS-associated genes and compared the proportions of male and female ALS patients carrying pathogenic or rare damaging variants. Key findings were replicated in the AnswerALS cohort (n = 723). Gene-specific sex ratios and familial history for C9ORF72, SOD1, and TARDBP were examined in an expanded dataset of 2,301 Italian ALS patients.

RESULTS: Sex-stratified burden testing revealed that rare variants in ALS genes were enriched in female cases versus controls (odds ratio [OR] 5.47, 95% confidence interval [CI] 1.60-34.29) but not in male cases. Female ALS patients more frequently carried rare damaging variants compared to males (23.2% vs 18.3%; OR 1.38, 95% CI 1.05-1.81), a finding that was replicated in the AnswerALS cohort (18.9% vs 12.4%; OR 1.58, 95% CI 1.10-2.26). Gene-level analyses of TARDBP carriers revealed a male predominance (2.1:1), yet a higher rate of familial history among females (40.4% vs 24.5%; OR 2.13, 95% CI 1.03-4.39).

INTERPRETATION: Females with ALS exhibited a higher overall burden of rare damaging variants, suggesting sex-related differences in genetic liability. Gene-level analyses indicate that the influence of sex varies across ALS genes, particularly TARDBP. These findings help explain epidemiological patterns and have implications for the identification of sex-linked protective mechanisms. ANN NEUROL 2026.

RevDate: 2026-02-10

Huang S, Bei Y, Zhang Q, et al (2026)

Behavioral Variant Frontotemporal Dementia With C9orf72 Intermediate Repeat Expansion: A case report.

Alzheimer disease and associated disorders pii:00002093-990000000-00189 [Epub ahead of print].

Hexanucleotide repeat expansion in the chromosome 9 open reading frame 72 (C9orf72) gene has been identified as the most common genetic cause of both frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). While large pathogenic expansions can reach hundreds to thousands of repeats, the lower limit for the number of pathogenic repeats remains controversial. Pathogenic threshold ranges from 30 to >60 repeats. Here, we report a rare case of behavioral variant frontotemporal dementia (bvFTD) associated with a C9orf72 repeat expansion of 49 units, a size that falls within the intermediate-length range. The patient presented with progressive neuropsychiatric decline, which progressed to include emotional blunting and memory impairment. Neuroimaging demonstrated bilateral temporal and hippocampal atrophy, with a reduction in glucose metabolism observed in the left fronto-parieto-temporal cortex and thalamus. This study may provide crucial clinical evidence for the ongoing debate on the pathogenicity of intermediate-length alleles in C9orf72.

RevDate: 2026-02-10
CmpDate: 2026-02-10

Leykam L, Forsberg KME, Andersen PM, et al (2026)

N-Truncated Superoxide Dismutase-1 in Cerebrospinal Fluid Is Folded and Active.

Journal of neurochemistry, 170(2):e70382.

Mutations in the antioxidant enzyme superoxide dismutase-1 (SOD1) are a well-established cause of amyotrophic lateral sclerosis (ALS). The mutations promote SOD1 misfolding, resulting in protein aggregation and motor neuron degeneration. SOD1 is normally a structurally stable enzyme, and the mechanisms underlying SOD1 misfolding remain poorly understood. Approximately one third of SOD1 in cerebrospinal fluid (CSF) exhibits an N-terminal truncation, the biological significance of which remains unclear. This is remarkable given the dramatic effects ALS-linked C-terminal truncations have on the enzyme. In this study, we identified the truncation site and investigated its impact on SOD1 stability and enzymatic activity. Edman degradation revealed the cleavage site between Asn-26 and Gly-27, generating a 26-residue peptide that was confirmed by mass spectrometry. We analyzed postmortem tissues from different parts of the central nervous system (CNS), including the choroid plexus, and found only trace amounts of N-terminally truncated SOD1. Biochemical characterization of the SOD1 in CSF was done by size exclusion chromatography, ion exchange chromatography, and mass spectrometry. Our findings demonstrate that SOD1 in CSF retains full enzymatic activity, that the N-terminally truncated variant is mainly present in heterodimers with native SOD1 subunits, and that the dimer remains folded and active, with both fragments of the truncated SOD1 fixed after proteolysis. Truncated SOD1 was absent in human plasma. In mice, only transgenically expressed human SOD1 underwent truncation in CSF, whereas endogenous murine SOD1 remained intact. Lastly, the N-terminal truncation does not induce misfolding, unlike the destabilizing effects observed with C-terminal truncations. The location where the truncation takes place and the underlying mechanism could not be identified. Whether the N-truncated SOD1 variant contributes to ALS pathogenesis remains to be determined.

RevDate: 2026-02-09

Roy KK, Kumari R, Upadhyay AK, et al (2026)

Tailoring treatments: pharmacogenomics in the management of neurodegenerative diseases.

Acta neurologica Belgica [Epub ahead of print].

Neurodegenerative diseases like Alzheimer's, Parkinson's, Huntington's, and amyotrophic lateral sclerosis are growing more common worldwide, yet treatment is still poor. Conventional therapies can have unforeseen side effects, produce poor medication reactions, and take longer to work. This persistent treatment gap highlights the need for novel approaches to these disorders' complex distinctions. Pharmacogenomics, which examines how genetic differences affect drug response, is a promising new subject and an urgent solution. Pharmacogenomics tailors medicine selection and administration to each patient's genetic profile, addressing the main causes of poor treatment response and preventable side effects. This research has enabled precision medicine that can improve neurodegenerative disease therapy and reduce harm. In this in-depth research, we examine neurodegenerative disease management issues, pharmacogenomics breakthroughs, and how incorporating genetics to clinical practice can improve outcomes. We examine the latest evidence that genetics affect drug breakdown, efficacy, and toxicity. We also discuss the challenges and opportunities of applying this knowledge. Pharmacogenomic approaches must be widely applied to make medicines for these awful disorders safer, more effective, and really suited to patient needs, according to our compilation.

RevDate: 2026-02-09

Ritgen J, Recker F, Kolsch M, et al (2026)

The 'Falx Flash' sign as an indicator of accurate midsagittal plane alignment for fetal CNS and NT assessment in first trimester ultrasound.

Ultraschall in der Medizin (Stuttgart, Germany : 1980) [Epub ahead of print].

PURPOSE: Obtaining a true mid-sagittal plane (MSP) and further Fetal Medicine Foundation (FMF) criteria is essential for accurate first-trimester ultrasound screening. The "Falx Flash" sign, a homogenous echo extending from the thalamus to the cranium, has been proposed as a useful appliance. This study investigates the association between the Falx Flash sign and additional key central nervous system structures.

MATERIAL AND METHODS: 
 We conducted a retrospective analysis of 185 first-trimester ultrasound examinations performed between 11+0 and 13+6 weeks' gestation. Images were reviewed for the presence of the Falx Flash sign and fulfillment of FMF criteria, including visualization of the nasal bone, brainstem, fourth ventricle, cisterna magna, thalamus delineation, and absence of zygomatic bone. Statistical comparisons between Falx Flash sign positive and negative groups were made using chi-square or Fisher's exact tests.

RESULTS: 
 The Falx Flash sign was present in 70% of cases. Its presence was strongly associated with improved visualization of midline structures: nasal bone (100% vs. 80%, p<0.0001), brainstem (97.7% vs. 76.4%, p<0.0001), fourth ventricle (96.2% vs. 72.7%, p<0.0001), cisterna magna (93.8% vs. 76.4%, p=0.0006), and thalamus delineation (98.5% vs. 49.1%, p<0.0001). Absence of the zygomatic bone was significantly more frequent with Falx Flash sign positive (76.2% vs. 16.4%, p<0.0001). There was no significant difference in fetal position, magnification, or caliper placement.

CONCLUSION: 
The Falx Flash sign is a reliable real-time marker of achieving a true MSP critical for correct NT measurement. Incorporating Falx Flash sign assessment into routine scanning protocols could improve anatomical visualization, enhance early anomaly detection, and reduce false-positive findings in first-trimester screening. Ziel: Bei dem Ersttrimesterscreening gemäß der Fetal Medicine Foundation ist die Gewinnung einer medianen Schnittebene essenziell. Das Falx Flash Zeichen entspricht dem Echo der Falx cerebri in der Medianebene und wurde als Marker für eine optimale Ebeneneinstellung vorgeschlagen. Die Studie untersucht den Zusammenhang zwischen dem Falx Flash Zeichen und weiterer wichtiger anatomischer ZNS Strukturen.

MATERIAL UND METHODEN: Es wurde eine retrospektive Analyse von 185 Ultraschalluntersuchungen (11+0 bis 13+6 SSW) durchgeführt. Die Bilder wurden hinsichtlich des Vorhandenseins des Falx Flash Zeichens und der Einhaltung der FMF-Kriterien bewertet: Die Darstellung von Nasenbein, Hirnstamm, viertem Ventrikel, Cisterna magna, Abgrenzung des Thalamus sowie das Fehlen des Jochbeins. Statistische Vergleiche zwischen Falx Flash Zeichen positiven und negativen Gruppen erfolgten mittels Chi-Quadrat- oder Fisher-Exakt-Test. Ergebnisse: Das Falx Flash Zeichen war in 70 % der Fälle nachweisbar. Dies war mit einer besseren Darstellung der Mittellinienstrukturen assoziiert: Nasenbein (100 % vs. 80 %), Hirnstamm (97,7 % vs. 76,4 %), vierter Ventrikel (96,2 % vs. 72,7 %), Cisterna magna (93,8 % vs. 76,4 %), Abgrenzung des Thalamus (98,5 % vs. 49,1 %) und Fehlen des Jochbeins (76,2 % vs. 16,4 %) war in der Falx-Flash-Gruppe signifikant häufiger. Es bestanden keine signifikanten Unterschiede hinsichtlich fetaler Position, Vergrößerung oder Platzierung der Messpunkte. Schlussfolgerungen: Das Falx Flash Zeichen ist ein Bestandteil der Medianebene und kann eine korrekte NT-Messung erleichtern. Die routinemäßige Beurteilung des Falx Flash Zeichen kann die anatomische Darstellung verbessern, die Früherkennung von Fehlbildungen fördern und die Rate falsch-positiver Befunde im Ersttrimesterscreening senken.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Miller TM, Cudkowicz ME, Shaw PJ, et al (2026)

Long-Term Tofersen in SOD1 Amyotrophic Lateral Sclerosis.

JAMA neurology, 83(2):115-125.

IMPORTANCE: Approximately 2% of amyotrophic lateral sclerosis (ALS) cases are attributable to a pathogenic variant in the superoxide dismutase 1 (SOD1) gene. Tofersen, an intrathecal antisense oligonucleotide designed to reduce SOD1 protein synthesis, is the first and only approved therapy for the treatment of ALS in adults who have a variant in the SOD1 gene.

OBJECTIVE: To evaluate the long-term effects of tofersen in adults with SOD1-ALS.

The phase 3, randomized, double-blind, placebo-controlled VALOR trial (A Study to Evaluate Efficacy, Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Tofersen in SOD1-ALS; conducted from March 2019 to July 2021) evaluated tofersen use over 28 weeks in adults (18 years and older) with weaknesses attributable to ALS and a confirmed SOD1 pathogenic variant at 32 sites in 10 countries; participants could then enroll in an open-label extension (OLE; completed August 2024).

INTERVENTION AND EXPOSURE: Adults with SOD1-ALS were randomly assigned 2:1 to receive tofersen (100 mg) or placebo over a 24-week period in the VALOR study. All participants in the OLE were treated with tofersen.

MAIN OUTCOMES AND MEASURES: Integrated analysis of VALOR and the OLE study aimed to compare early start vs placebo/delayed start (approximately 6 months later) treatment with tofersen. Key efficacy end points included measures of axonal injury and neurodegeneration (neurofilament), function and strength, quality of life, and survival.

RESULTS: VALOR enrolled 108 participants with 42 unique SOD1 pathogenic variants (mean [SD] age: placebo/delayed-start group 51.2 [11.6] [n = 36]; early-start group: 48.1 [12.6] [n = 72]) with 19 (53%) and 43 (60%) of participants being male in the placebo/delayed- and early-start groups, respectively. Overall, 95/108 participants (88%) enrolled in the OLE, and 46 participants completed the OLE (early-start group, 34 [47%]; placebo/delayed-start group, 12 [33%]). At OLE completion, participants could have accumulated 3.5 years or more (range, 192-276 weeks) of follow-up from the start of VALOR. Over 148 weeks, earlier initiation of tofersen (compared to later initiation) was associated with numerically less decline in measures of clinical function (Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised score, -9.9 vs -13.5 points), respiratory function (slow vital capacity, -13.8% vs -18.1%), muscle strength (handheld dynamometry megascore, -0.38 vs -0.43 points), and quality of life (Amyotrophic Lateral Sclerosis Assessment Questionnaire 5 score, 17.0 vs 22.5 points; EuroQol 5 Dimension, 5 Level Questionnaire score, -0.1 vs -0.2 points). Tofersen prolonged survival relative to the expected natural history of SOD1-ALS. Most adverse events were consistent with ALS progression or known procedural adverse effects. All serious neurological adverse events were reversible; few led to tofersen discontinuation.

CONCLUSIONS AND RELEVANCE: Final data from VALOR and the OLE demonstrated the benefit of tofersen in SOD1-ALS and provide clear rationale for its use in this population.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: VALOR NCT02623699; OLE NCT03070119.

RevDate: 2026-02-09

Liu X, Wang J, Zhan J, et al (2026)

Dual-Field Amplification via Nanotip-Engineered Catalysts for Efficient Spin-State and Ion Regulation in Aluminum-Sulfur Batteries.

ACS nano [Epub ahead of print].

Modulating the electronic structure of catalysts through external magnetic fields is a promising strategy for enhancing electrocatalytic activity, which has been successfully demonstrated in the oxygen evolution reaction (OER), zinc-air batteries and lithium-sulfur batteries. However, conventional magnetic regulation approaches typically focus solely on spin-state modulation, neglecting the ion transport limitations in practical systems. Additionally, existing permanent magnets and ferromagnetic additives generate magnetic fields with limited intensity and nonuniform directionality, restricting their effectiveness. Herein, we propose a tip-enhanced magnetic-electric dual-field strategy by rationally designing ferromagnetic NiCo2O4 catalysts with nanotip architectures to address long-standing kinetic bottlenecks in aluminum-sulfur (Al-S) batteries. Finite element analysis demonstrates that the high-curvature tips significantly amplify local electric and magnetic fields by approximately 4.2- and 2.6-fold, respectively, under an external field. Moreover, the induced spin-state transition of Ni[3+] to high-spin (HS) states enhances d-p orbital hybridization with polysulfide intermediates, effectively lowering reaction barriers. This dual enhancement synergistically promotes ion transport via magnetohydrodynamic (MHD) effects, leading to substantially reduced voltage hysteresis and markedly improved electrochemical performance, delivering a high reversible capacity of 513 mAh g[-1] after 700 cycles in Al-S batteries. By integrating geometric field amplification with spin-state modulation, this work presents a highly efficient and scalable strategy for approach to designing high-performance catalysts for advanced Al-S batteries.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Pervushina EV, Kutlubaev MA, Kuznetsova DR, et al (2026)

[Combination of amyotrophic lateral sclerosis with Alzheimer's disease].

Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova, 126(1):132-136.

The combination of amyotrophic lateral sclerosis (ALS) with Alzheimer's disease is rare. Currently, it is unclear whether such comorbidity is an accidental coincidence or a manifestation of a specific pathological process. A case of simultaneous occurrence of classic symptoms of the bulbar form of ALS and Alzheimer's disease is presented. The possible mechanisms of the combination of two diseases are analyzed.

RevDate: 2026-02-09

Li J, Zhu D, Yang W, et al (2026)

Lifestyle-Associated Metabolic Signature Predicts the Risk of Amyotrophic Lateral Sclerosis.

Muscle & nerve [Epub ahead of print].

INTRODUCTION/AIMS: Although the association between certain lifestyle factors and the risk of amyotrophic lateral sclerosis (ALS) has been recognized, the potential mechanism underlying it remains unexplored. This study aimed to identify the metabolic signature indicative of lifestyle factors related to ALS, to examine its association with ALS risk, and to evaluate the mediating effects of muscle strength underlying these associations.

METHODS: This study used UK Biobank data, including ALS diagnoses, potential ALS-related factors, metabolomics, and hand grip strength. A total protective factor score was calculated from lifestyle data. Multivariable Cox regression analyzed associations between the score, its components, and ALS risk. ALS-related metabolic signatures were identified via elastic net regression. ALS risk across signature levels was compared by log-rank tests. Mediation analysis assessed the role of baseline hand grip strength.

RESULTS: 248,222 participants were included in this study. Among lifestyle factors, the total protective factor score, no military service, and higher body mass index were significantly associated with reduced ALS risk. The metabolic signature derived from 163 metabolites indicative of potential ALS-associated protective factors was identified and found to be associated with lower ALS risk. Baseline hand grip strength of both hands was also associated with reduced ALS risk. Mediation analysis revealed that right-hand grip strength significantly mediated the associations between the total protective factor score, the metabolic signature, and ALS risk.

DISCUSSION: Our study highlights the potential of the metabolic signature as a biomarker for early disease identification and underscores the importance of lifestyle-based prevention strategies.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Boucher Grenon J, Doyon C, Laliberté T, et al (2026)

Design of a low-cost mechanical 3D-Printed hand orthosis for grasping assistance in activities of daily living.

Journal of rehabilitation and assistive technologies engineering, 13:20556683261422642.

The ability to grasp objects has a significant impact on the independence of individuals following a stroke, a spinal cord injury, or for those who are living with amyotrophic lateral sclerosis. In most cases, physical rehabilitation is not sufficient to regain the hand function necessary for day-to-day life. Hand orthoses capable of providing grasping assistance in activities of daily living are therefore crucial to a more independent lifestyle. However, most available options struggle to offer an acceptable balance between cost, size, weight and functionality, resulting in limited use in practice. This article presents a low-cost, 3D-printed hand orthosis that relies solely on mechanical elements to aid in finger flexion. An underactuated, flexible design for the fingers with nylon strips as spring blades was used to achieve a design that costs only 27% of the price of comparable commercially available options, as well as being very lightweight and easily customizable. It was also demonstrated that rigid thumb supports allowed the orthosis to be used in the majority of daily grasping tasks. Finally, the use of the proposed mechanism was shown to be able to provide up to 4 N of flexion assistance to the finger when using a medium wrap grip.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Farinazzo G, Giagnorio E, Marcuzzo M, et al (2026)

MicroRNA profiling in post-mortem spinal cord of C9ORF72-related ALS patients reveals molecular pathways involved in motor neuron degeneration.

Frontiers in neuroscience, 20:1741065.

INTRODUCTION: Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder causing progressive motor neuron death in cortex, brainstem and spinal cord. The most common genetic cause is the G4C2 hexanucleotide repeat expansion in the non-coding region of exon 1 of C9ORF72, accounting for ~40% of familial and ~7% of sporadic ALS. RNA dysregulation is increasingly recognized as a key contributor to ALS pathogenesis. This study aimed to identify specific microRNAs (miRNAs) involved in motor neuron degeneration in C9ORF72-ALS.

METHODS: We profiled 754 miRNAs in human post-mortem spinal cord tissue from C9ORF72-ALS patients and healthy donors. Laser capture microdissection isolated ventral horn regions, and in silico target prediction identified potential genes and pathways regulated by differentially expressed miRNAs. Target genes were validated by Real time PCR.

RESULTS: Two subsets of miRNAs were exclusively expressed in ventral horn regions: miR-200b-3p and miR-346 in C9ORF72-ALS patients, and miR-30d-5p, miR-106b-5p and miR-135a-5p in healthy donors. Target prediction and molecular analysis identified putative genes and pathways linked to cell death, inflammation, protein metabolism, DNA modification, excitotoxicity, autophagy and vesicles trafficking.

DISCUSSION: This study identifies specific miRNAs and their target genes as key molecules in motor neuron degeneration in C9ORF72-ALS. Restoring their expression could represent a therapeutic approach for ALS.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Kanj G, Malaeb D, Sakr F, et al (2026)

Psychometric properties of an Arabic translation of the short form of the affective lability scale in a sample of Lebanese adults.

Frontiers in psychology, 17:1642617.

BACKGROUND: The present study aimed to investigate the psychometric properties of an Arabic version of the Affective Lability Scale in its short form (ALS-18) within an Arabic-speaking sample. Particularly, the concurrent validity, sex invariance and factorial structure were examined.

METHODS: The total sample of this cross-sectional study consisted of 748 adults, with a mean age of 34.48 ± 13.25 years, 66.5% females. After completing the forward-backward translation for cultural and linguistic adaptation, concurrent validity was assessed through correlations with related constructs, Confirmatory Factor Analysis was conducted to examine the factorial structure, and internal reliability as well as measurement invariance across sex were tested, the latter being through multigroup analyses.

RESULTS: The fit of the scale's original three-factor model was suggested through confirmatory factor analyses. Full measurement invariance at the configural, metric, and scalar levels was attained. The scale also yielded concurrent validity, with results indicating associations with increased levels of depression, anxiety and stress, and lower levels of self-esteem. The study's findings further denoted good internal consistency of the Arabic ALS-18 with values of McDonald's ω and Cronbach's α greater than 0.70.

CONCLUSION: Results revealed that the Arabic ALS-18 is a reliable and valid self-report measure that could be utilized among an Arabic-speaking population to assess affective lability. The availability of the Arabic version of the ALS-18 is deemed to increase its use for research and provide a foundation for future clinical validation studies, globally benefiting Arabic-speaking individuals.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Wang Z, Huang J, D Yun (2026)

Current and emerging therapeutic strategies for amyotrophic lateral sclerosis: from pharmacological approaches to gene and stem cell therapies.

Frontiers in neurology, 17:1729302.

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease that involves upper and lower motor neurons, severely impairing patients' quality of life. The complex interaction of genetic and environmental factors in ALS pathophysiology complicates therapeutic development. Currently available disease-modifying pharmacological therapies for ALS offer limited efficacy, only slowing disease progression to a modest degree. The recent market withdrawal of a previously approved therapy (AMX0035) further underscores the challenges in this field. Biological targets for ALS and related neurodegenerative diseases offer a unique avenue for therapeutic intervention. With the advancement of genetic engineering technology, innovative therapies such as Stem cell therapy and gene therapy are also discussed, offering a promising horizon for ALS treatment. In addition, the management of ALS symptoms plays a key role in improving the daily lives of people with the disease. In this review, we summarize various strategies for treating ALS, providing an overview of the disease.

RevDate: 2026-02-09
CmpDate: 2026-02-09

Yu C, Zeng W, Meekrathok P, et al (2025)

[Heterogeneity in the regulation of cellular stress responses by FUS gene mutations associated with amyotrophic lateral sclerosis].

Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences, 50(10):1755-1770.

OBJECTIVES: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by the selective death of motor neurons, exhibiting marked clinical heterogeneity and lacking effective treatment. The etiology and pathogenic mechanisms remain incompletely understood. The FUS (fused in sarcoma) gene is one of the key causative genes in ALS. Pathogenic mutations in the encoded protein are predominantly clustered in the C-terminal nuclear localization signal (NLS) region, and distinct NLS mutation sites show considerable differences in pathogenic potency, clinical phenotypes, and molecular mechanisms. This study focuses on 2 representative pathogenic NLS mutations of FUS (FUS[R514S] and FUS[P525L]) to investigate their differential regulation of cellular stress responses and explore the underlying mechanisms.

METHODS: Multiple sequence alignment of FUS protein homologs from 12 species was performed using an online tool from the National Center for Biotechnology Information (NCBI) to determine the evolutionary conservation of residues R514 and P525. The three-dimensional (3D) structure of the nuclear transport receptor-FUS complex [Protein Data Bank (PDB) ID: 5YVG] was analyzed and visualized using PyMOL. Structure of FUS mutants were generated using the mutation wizard tool in PyMOL by selecting the target conformational isomer and executing the mutation workflow. Tet-on inducible expression cell models for FUS wild-type (WT) and mutant FUS (FUS[R514SS] and FUS[P525L]) were established in human embryonic kidney 293T (HEK293T) cells. Protein expression levels and subcellular localization of FUS were assessed by Western blotting and immunofluorescence assay, respectively. FUS aggregation states were compared between WT and mutant FUS using a digitonin-based permeabilization and extraction assay, followed by sodium dodecylsulfate-polyacrylamide gel electrophoresis-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting analysis. Blue native PAGE (BN-PAGE) was used to evaluate the stability of FUS-containing complexes. Mitochondrial membrane potential and reactive oxygen species (ROS) levels were measured by flow cytometry. Stress granule (SG) formation was induced using sodium arsenite, and the effects of WT and mutant FUS on SG dynamics were analyzed by immunofluorescence assay. Protein expression changes of mitochondrial function-related proteins [translocase of outer membrane 20 kD subunit (Tom20) and voltage-dependent anion channel 1 (VDAC1)] and key molecules of the integrated stress response (ISR) pathway [phosphorylated-eukaryotic initiation factor 2 alpha (p-eIF2α) and activating transcription factor 4 (ATF4)] were examined by Western blotting.

RESULTS: Sequence alignment revealed that R514 and P525 are highly conserved across FUS homologs from 12 species. Structural analysis indicated that the FUS[R514S] and FUS[P525L] mutations disrupt hydrogen bonding or hydrophobic interactions between FUS and importin-β2, weakening the stability of these interactions. Western blotting confirmed the successful establishment of inducible WT and mutant FUS expression cell models, and exogenous FUS expression slightly suppressed endogenous FUS protein levels. Immunofluorescence assay demonstrated that WT FUS is predominantly localized in the nucleus, whereas both FUS[R514S] and FUS[P525L] mutants mislocalize to the cytoplasm with a punctate, granular distribution. Compared with WT FUS, neither mutant significantly affected mitochondrial membrane potential, ROS levels, or the homeostasis of mitochondrial function-related proteins (all P>0.05). Upon sodium arsenite exposure, mutant FUS formed SGs more rapidly, generated SGs with larger diameters, and displayed distinct intracellular distribution and aggregation patterns relative to WT (P>0.05). After drug withdrawal, WT and mutant FUS showed no significant difference in their effects on SG disassembly (P<0.05). Under basal conditions, FUS[R514S] exhibited significantly higher eIF2α phosphorylation levels than WT, and ATF4 protein levels also showed an increasing trend (P<0.05). No statistically significant difference was observed between FUS[P525L] and WT FUS in these measures (P>0.05). Sodium arsenite treatment increased eIF2α phosphorylation across all groups, eliminating inter-mutant differences.

CONCLUSIONS: Distinct pathogenic NLS mutations of FUS differentially regulate cellular stress responses through different mechanisms, contributing to ALS initiation and progression. Among these, FUS[P525L] promotes the formation of larger stress granules, whereas FUS[R514S] more readily activates the cellular ISR.

RevDate: 2026-02-08

Mulla Z, N Coupe (2026)

Halal and Healthy: A Qualitative Study of British Muslim Perspectives on Meat Consumption and Plant-based Diets.

Appetite pii:S0195-6663(26)00058-9 [Epub ahead of print].

Reducing meat consumption has the potential to improve both population and planetary health, however approaches to this have not been fully explored, particularly in the British Muslim community. British Muslims consume more meat than the average British person and face disproportionate diet related health risks. Although reducing meat consumption and eating more plant-based is known to reduce such health risks, there is limited understanding of British Muslim perceptions of this dietary transition. This study explored the barriers and facilitators towards British Muslims reducing meat consumption by increasing consumption of plant-based foods. The qualitative study involved semi-structured interviews with 15 British Muslims from Greater Manchester. Interviews were inductively analysed using reflexive thematic analysis and then deductively mapped to Michie et al.'s (2014) COM-B model. Two themes were identified. "Islamic Teachings and Food Choices" highlighted how Islamic teachings and practices gave religious significance to meat and taught foundational ethics that could encourage plant-based diets identified as reflective motivation influences. "The Value of Meat" explored perceptions of the elevated status of meat, influenced by beliefs about health, socio-economic status, and sociocultural norms. Social opportunity and reflective motivation were key influences identified in this theme. This study emphasised the importance of culturally relevant dietary interventions considering religious beliefs and community norms.

RevDate: 2026-02-08

Xiang Q, Liu Y, J Wang (2026)

Golgi fragmentation driven by the USP11-ITCH axis triggers autolysosomal failure in neurodegeneration.

Autophagy [Epub ahead of print].

Golgi fragmentation is a prominent early hallmark of neurodegenerative diseases such as Alzheimer disease (AD) and amyotrophic lateral sclerosis (ALS), yet the shared molecular mechanisms underlying this phenomenon remain poorly understood. Here we identify the E3 ubiquitin ligase ITCH as a central regulator of Golgi integrity and proteostasis. Elevated ITCH disrupts both cis- and trans-Golgi networks, dislocates lysosomal hydrolase sorting factors, and impairs maturation of hydrolases. The ensuing lysosomal dysfunction leads to autophagosome accumulation and defective clearance of accumulated cytoplasmic toxic proteins like TARDBP/TDP-43. Genetic and pharmacological inhibition of ITCH restores autolysosomal degradation and protects neurons in both mammalian and Drosophila models. Aberrant buildup of the deubiquitinase USP11 drives ITCH accumulation, intensifying neuronal proteotoxic stress in individuals with AD and ALS. These findings reveal a mechanistic pathway connecting Golgi disorganization, autolysosomal impairment, and proteotoxic stress in neurodegeneration.

RevDate: 2026-02-07

Shen Y, Shen S, ZG Luo (2026)

Gene-targeted versus broad-spectrum therapies in ALS: comparative lessons and strategic outlook.

Journal of genetics and genomics = Yi chuan xue bao pii:S1673-8527(26)00042-1 [Epub ahead of print].

Amyotrophic lateral sclerosis (ALS) is a relentless and fatal neurodegenerative disorder characterized by the progressive loss of motor neurons, leading to muscle weakness, paralysis, and ultimately, respiratory failure. Despite a growing understanding of its complex pathophysiology, therapeutic options remain limited. This review critically analyzes recent clinical advances by comparing two divergent strategies, including precision gene-targeted therapies for monogenic ALS subtypes and broad-spectrum agents for the wider sporadic population. While gene therapies like tofersen demonstrate clear molecular target engagement, their translation to robust clinical benefit remains a challenge. In contrast, broad-spectrum agents have faced consistent late-stage failures, often due to the disease's underlying diversity, which undermines a one-size-fits-all approach. We argue that this heterogeneity, coupled with a lack of predictive biomarkers and the difficulty of late-stage intervention, represents the core barrier to progress. The future of ALS therapeutics therefore depends on a strategic pivot toward personalized medicine. This requires prospectively stratifying patients, developing rational combination therapies, and intervening earlier in the disease course, ultimately treating ALS as a syndrome of distinct molecular diseases rather than a single entity.

RevDate: 2026-02-07

Sia T, Sheehy TP, Morgan P, et al (2026)

Trajectory of Mobility Fuction Decline for People with Motor Neuron Disease.

Archives of physical medicine and rehabilitation pii:S0003-9993(26)00053-5 [Epub ahead of print].

OBJECTIVE: The primary aim of this study was to explore factors that may influence the rate of mobility function decline. A secondary aim was to identify the impact of neck weakness on mobility decline in people living with motor neuron disease (MND).

DESIGN: Retrospective, longitudinal observational study design.

SETTING: This study was undertaken at a State-wide Progressive Neurological Disease Service (SPNDS) in the inpatients, outpatients and community-based services. The SPNDS clinic treats adults with MND from both metropolitan and rural settings.

PARTICIPANTS: Adults with motor neuron disease attending the Statewide Progressive Neurological Disease Service were recruited to participate in the study.

INTERVENTIONS: Not applicable.

MAIN OUTCOME MEASURES: categorical data relating to mobility function (walking endurance, gait aid used and level of assistance required) was recorded. Neck weakness was measured as present or absent based on participant subjective report and/or objective observation of head position when upright.

RESULTS: Results from the 358 participants recruited showed that the median time to loss of independent gait was 30.5 months (range 4-239; IQR 26), full time wheelchair use was 34 months (IQR 35; range 5-238) and median time to becoming housebound was 28 months from MND symptom onset (IQR 24.5; range 5-219 months). 141 (39.4%) participants had neck weakness. The presence of neck weakness resulted in earlier loss of independent gait and quicker to become housebound. There was no significant difference in time to full time wheelchair use between participants with or without neck weakness.

CONCLUSION: There was an effect of both phenotype and neck weakness on the trajectory of mobility function decline in people with MND. Overall, people with amyotrophic lateral sclerosis (ALS) phenotype (bulbar, cervical or lumbar onset) experienced a more rapid rate of decline in mobility function than those with flail limb and primary lateral sclerosis (PLS) phenotypes. Additionally, those demonstrating neck weakness were quicker to decline in mobility than those without neck weakness.

RevDate: 2026-02-07

Sebastianelli L, Versace V, Ferrazzoli D, et al (2026)

Neurophysiology in the mirror: A tri-layer model of mirror movements informed by TMS evidence.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 184:2111692 pii:S1388-2457(26)00191-4 [Epub ahead of print].

OBJECTIVE: Mirror movements are involuntary, task-coupled contractions in contralateral homologous muscles during unilateral movement. While often described as a developmental remnant or rare clinical sign, mirror movements offer insight into the physiological mechanisms that underlie motor lateralization and interhemispheric balance. This review aimed to synthesize the available neurophysiological evidence-primarily from transcranial magnetic stimulation (TMS)-and propose a structured, mechanism-based framework for interpreting mirror movements across neurological conditions.

METHODS: A structured narrative review was conducted of studies published between 1966 and November 2025 using TMS in individuals with congenital, developmental, or acquired mirror movements. Studies using neuroimaging or peripheral electrophysiology were included selectively to support anatomical or functional interpretation of TMS findings. Data were organized into three mechanistic layers based on prevailing neurophysiological signatures rather than etiology alone.

RESULTS: Three non-mutually exclusive mechanisms were identified: (I) persistent fast-conducting ipsilateral corticospinal projections, primarily in congenital mirror movement syndromes and early brain injury; (II) deficient transcallosal inhibition, observed in conditions affecting interhemispheric balance such as amyotrophic lateral sclerosis, multiple sclerosis, Parkinson's disease, and callosal agenesis; and (III) bilateral overactivation of premotor and supplementary motor areas, especially under conditions of impaired motor program selection or increased task demands.

CONCLUSIONS: Mirror movements can be interpreted within a tri-layer model reflecting distinct disruptions in corticospinal connectivity, interhemispheric inhibition, and supraspinal motor control.

SIGNIFICANCE: This framework provides an integrative model for interpreting neurophysiological findings in mirror movements, offering insight into hierarchical motor control without implying specific diagnostic or therapeutic applications.

RevDate: 2026-02-07

Kim SH, YS Roh (2026)

Effects of a theory-based advanced life support booster training program on competency retention in nursing students: A randomized controlled trial.

Nurse education in practice, 92:104754 pii:S1471-5953(26)00056-9 [Epub ahead of print].

AIM: This study evaluated the effectiveness of a theory-based advanced life support (ALS) booster training program on six-month retention of knowledge, skills performance and teamwork.

BACKGROUND: Retention of ALS competencies is vital for nursing students, yet skills and knowledge often decline within months of initial training.

DESIGN: A randomized controlled trial was conducted.

METHODS: A convenience sample of 65 fourth-year nursing students were randomly assigned to an experimental group (n = 33) receiving a two-hour booster session based on mastery learning and deliberate practice theories or to a control group (n = 32). ALS knowledge, skills and teamwork were measured at baseline and six months post-training. Data were analyzed using non-parametric tests and generalized estimating equation.

RESULTS: Both groups experienced declines over time. However, the experimental group showed significantly better retention in skills performance (p < .001) and teamwork (p = .025). Knowledge retention was higher but not statistically significant (p = .116).

CONCLUSIONS: A brief, theory-based booster session effectively improved long-term retention of ALS skills and teamwork, supporting its integration into nursing education.

RevDate: 2026-02-09
CmpDate: 2026-02-07

Abrahao A, Ciepielewska M, L Zinman (2026)

Value of Clinical Evidence and Health Economics and Outcomes Research (HEOR) Studies.

Muscle & nerve, 73 Suppl 1(Suppl 1):S7-S12.

Randomized controlled trials (RCTs) remain the gold standard for establishing the efficacy and safety of new treatments. However, clinical evidence derived from the systematic analysis of real-world data generated through routine clinical practice can complement RCT data by offering insights into treatment performance in broader, more heterogeneous patient populations and clinical care settings. The integration of high-quality clinical evidence into health economics and outcomes research (HEOR) is increasingly important, as it supports healthcare decision-making across multiple stakeholders, including regulatory agencies, payers, clinicians, and patients. Multiple study designs, such as pragmatic trials, hybrid RCTs, external control arms, and observational studies, can provide valuable clinical evidence beyond the controlled trial setting. These data can enhance understanding of comparative effectiveness, patient-reported outcomes, treatment safety, and healthcare utilization and costs. The field of amyotrophic lateral sclerosis offers a compelling example of how clinical evidence derived from global registries and clinical studies has advanced understanding of disease epidemiology, treatment patterns, and the effectiveness of therapies, including riluzole and edaravone. Consequently, this review and the associated supplementary articles are meant to serve as a primer to inform clinicians of the potential contribution of clinical evidence to HEOR studies.

RevDate: 2026-02-09
CmpDate: 2026-02-07

Abrahao A, Zinman L, S Apple (2026)

Current and Ongoing Clinical Studies.

Muscle & nerve, 73 Suppl 1(Suppl 1):S26-S28.

This article provides a comprehensive overview of current and ongoing studies evaluating intravenous (IV) edaravone and edaravone oral suspension in the treatment of amyotrophic lateral sclerosis (ALS). In addition to data from clinical practice and post hoc analyses, multiple observational and interventional studies are underway to better understand the efficacy, safety, and biological impact of edaravone in clinical settings. Key studies include SUNRISE Japan, a long-term postmarketing surveillance study of IV edaravone in Japanese patients with ALS; the ALS/Motor Neuron Disease Natural History Study, a longitudinal registry designed to inform clinical trial design and track ALS progression; and the REFINE-ALS study, which is actively collecting biomarker data to elucidate the pathophysiologic mechanisms influenced by edaravone. For edaravone oral suspension, United States Food and Drug Administration approval was supported by Study MT-1186-A01, a phase 3 trial assessing safety and tolerability over 48 weeks, with extension Study MT-1186-A03. Study MT-1186-A02, conducted as an FDA postmarketing commitment, and its extension, Study MT-1186-A04, evaluated whether investigational once daily dosing showed superior efficacy vs. the approved on/off dosing regimen. Collectively, these studies contribute to a growing body of evidence supporting the use of edaravone as a therapeutic option for ALS. They also underscore the importance of continued data collection from both clinical trials and clinical settings to inform optimal treatment strategies and combination therapy approaches as more agents become available in an evolving ALS treatment landscape.

RevDate: 2026-02-09
CmpDate: 2026-02-07

Brooks BR, Ennist DL, Beaulieu D, et al (2026)

Generalizability of Edaravone Efficacy.

Muscle & nerve, 73 Suppl 1(Suppl 1):S16-S18.

The pivotal phase 3 trial MCI186-19 (Study 19) demonstrated the efficacy of intravenous edaravone in slowing functional decline in patients with amyotrophic lateral sclerosis (ALS), leading to United States Food and Drug Administration approval. Study 19 utilized a targeted enrollment enrichment strategy based on post hoc analyses from earlier trials, selecting patients with higher baseline function, more rapid disease progression, and better respiratory status. To evaluate the generalizability of Study 19 results, subsequent post hoc analyses assessed the efficacy of edaravone in broader ALS populations. One machine learning-based analysis retrospectively applied a validated model to Study 16 data, stratifying patients by predicted risk of respiratory decline. This detectable effect cluster analysis suggested that up to 70% of Study 16 participants may have benefited from edaravone. A second analysis investigated edaravone efficacy in patients from Study 19 with forced vital capacity (FVC) < 80% predicted (%p) at the start of treatment, since FVC ≥ 80%p was one of the Study 19 inclusion criteria. Both high- and low-FVC subgroups demonstrated reduced ALS functional rating scale-revised decline at 48 weeks when treated continuously with edaravone. These findings support the potential benefit of edaravone in a wider range of patients with ALS than those enrolled in Study 19, providing important insights into how clinical trial enrichment strategies may influence perceived efficacy, and underscoring the need for future prospective studies in more diverse ALS populations.

RevDate: 2026-02-09
CmpDate: 2026-02-07

Gwathmey KG, S Apple (2026)

Introduction to the Supplement.

Muscle & nerve, 73 Suppl 1(Suppl 1):S3-S6.

Amyotrophic lateral sclerosis (ALS) is a progressive and fatal neuromuscular disease with marked phenotypic and clinical heterogeneity. Three active pharmaceutical agents are currently approved by the United States Food and Drug Administration (FDA) for ALS: riluzole, edaravone (including intravenous [IV] and oral suspension formulations), and tofersen. Study MCI186-19 (Study 19) was a pivotal, phase 3 randomized controlled trial that demonstrated a significant reduction in physical functional decline vs. placebo in Japanese patients with ALS and contributed to FDA approval of IV edaravone in 2017. Edaravone oral suspension was FDA-approved in May 2022 following the results of Study MT-1186-A01, which showed it was well tolerated with a safety profile consistent with IV edaravone. Following Study 19, the clinical benefit of edaravone has remained an active area of investigation. This supplement presents data from clinical trials, post hoc analyses, and clinical studies that expand understanding of the use of edaravone in broader ALS populations. Topics include safety in clinical practice, generalizability of efficacy, clinical treatment outcomes, and health economics and outcomes research studies. Together, these findings aim to inform clinicians, researchers, and stakeholders regarding the evolving evidence base for edaravone in the management of ALS.

RevDate: 2026-02-07
CmpDate: 2026-02-07

Genge A, S Apple (2026)

Safety of Intravenous Edaravone in Clinical Practice.

Muscle & nerve, 73 Suppl 1(Suppl 1):S13-S15.

This article summarizes the post-marketing pharmacovigilance safety data of intravenous (IV) edaravone during the 1- and 3-year periods following its launch for amyotrophic lateral sclerosis (ALS) in the United States. The most frequently reported adverse events (AEs) and serious AEs (SAEs) included those consistent with ALS disease progression, such as fatigue and muscular weakness, and were not qualitatively different from those reported in previous ALS trials. There were AEs and SAEs associated with IV administration, such as administration site reactions, and five non-fatal anaphylaxis SAEs were reported. No new safety signals were identified, and IV edaravone continues to demonstrate a favorable safety profile. These insights are especially useful as treatment transitions to edaravone oral suspension, which avoids IV-related complications. These findings underscore the importance of ongoing clinical safety assessments in informing ALS treatment decisions.

RevDate: 2026-02-07
CmpDate: 2026-02-07

Brooks BR, Berry JD, M Ciepielewska (2026)

Survival of Intravenous Edaravone-Treated Patients With ALS: Evidence From Administrative Claims Analyses.

Muscle & nerve, 73 Suppl 1(Suppl 1):S23-S25.

Randomized controlled trials remain the cornerstone of evidence generation in amyotrophic lateral sclerosis (ALS), yet their inherent challenges, including disease rarity, heterogeneity, and limited validated biomarkers, highlight the need for complementary clinical evidence. This exploratory, retrospective study assessed overall survival in patients with ALS treated with intravenous (IV) edaravone using data from a large United States administrative claims database of patients enrolled from August 2017 to March 2020. Patients receiving IV edaravone (n = 318) were propensity score matched 1:1 with controls not treated with IV edaravone (n = 318), adjusting for 11 covariates. Median overall survival was 29.5 versus 23.5 months for the edaravone-treated group compared to controls, with a 27% reduced risk of death observed in the treated cohort (p = 0.005). These findings, together with existing data from the pivotal phase 3 Study MCI186-19 of IV edaravone, contribute to the growing body of literature suggesting a dual benefit of edaravone on both function and survival in ALS, offering critical insights for clinicians, patients, and payers navigating ALS treatment decisions.

RevDate: 2026-02-07
CmpDate: 2026-02-07

Brooks BR, Shefner J, S Apple (2026)

Study 19 (MCI186-19) Post Hoc Analyses.

Muscle & nerve, 73 Suppl 1:S19-S22.

While randomized controlled trials (RCTs) are the gold standard for evaluating the efficacy of therapies in amyotrophic lateral sclerosis (ALS), post hoc analyses can provide critical insights into clinical effectiveness, treatment durability, and subpopulation responses. Several post hoc analyses of Study MCI186-19 (Study 19), the pivotal phase 3 RCT that supported the United States Food and Drug Administration approval of intravenous edaravone, have been performed to explore the broader clinical impact of this therapy. These analyses assessed the long-term treatment efficacy, changes in individual ALS Functional Rating Scale-Revised item scores, survival and additional milestone events, and the impact of edaravone in patient subgroups defined by disease progression trajectories using latent class analysis. Collectively, these findings reinforce the long-term clinical benefit of edaravone and demonstrate that edaravone may offer benefits across a spectrum of ALS disease trajectories, beyond those defined in the original study criteria. These studies help address questions not captured in the original RCT and may inform future trial design and treatment decisions.

RevDate: 2026-02-07

Scekic-Zahirovic J, Antonucci S, Wiesner D, et al (2026)

Large-scale mapping of the MCH network in ALS mice reveals the vulnerability of dopaminergic and GABAergic neurons in zona incerta.

Acta neuropathologica communications pii:10.1186/s40478-026-02231-z [Epub ahead of print].

RevDate: 2026-02-06

Johansen H, Nakken O, Holmøy T, et al (2026)

Disease trajectories and end of life care in a Norwegian ALS cohort.

BMC neurology pii:10.1186/s12883-026-04698-8 [Epub ahead of print].

OBJECTIVE: This retrospective cohort study aims to provide comprehensive data on the disease trajectory and end-of-life care in patients dying from ALS.

METHODS: The study presents detailed information on a cohort dying from ALS in the area served by Akershus University Hospital from 2011 to 2022. Data was obtained from the patient medical records.

RESULTS: 118 patients were included. 65 patients (55%) were referred to the Department of Palliative medicine for specialist palliative care, with a median duration from referral to death of two months and one third of patients not being able to communicate verbally at the time of referral. The most common life-sustaining treatment was non-invasive ventilation and percutaneous endoscopic gastrostomy, whereas most prevalent limitation of life-sustaining treatment was withholding of tracheostomy with invasive ventilation. Hospital was the most common place of death with 54 (46%) of all deaths. For in-hospital-deaths, the most common place of death was the palliative care ward, with 21 patients (39%), but a substantial proportion (17%) died at intensive or intermediate care units. Overall, 37% of in-hospital deaths had been admitted to either intensive or intermediate care units during their last week of life, which may suggest these patients deteriorated rapidly without having documented advanced care planning and therefore received resource demanding and futile treatment during the last week of life.

CONCLUSION: Many patients lived in their own homes until admitted to their last hospital stay in life. However, these last hospital stays were frequently characterized by insufficient advanced care planning, leading to futile overtreatment.

TRIAL REGISTRATION: Retrospectively registered.

RevDate: 2026-02-06

Raina GS, Mehan S, G Das Gupta (2026)

Neuroprotection via IGF-1 Neuronal Signaling Activation by Melatonin and Edaravone Synergy in Methylmercury-Induced ALS-like Neurotoxicity: Comprehensive Analysis of Brain Regions, Spinal Cord, CSF, and Blood Plasma.

Neurotoxicology pii:S0161-813X(26)00019-7 [Epub ahead of print].

Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease characterized by motor neuron degeneration, oxidative stress, neuroinflammation, and neurotransmitter imbalances. This study explored the neuroprotective potential of melatonin (MLT), alone and in combination with edaravone (EDR), in a methylmercury (MEME)-induced ALS rat model. MEME exposure effectively replicated ALS pathology, causing behavioral deficits, oxidative stress, neuroinflammation, apoptosis, and widespread structural damage in critical brain regions and the spinal cord. MLT administration at 5mg/kg (MLT5) and 10mg/kg (MLT10) significantly mitigated MEME-induced neurotoxicity in a dose-dependent manner. MLT improved motor function, reduced depressive-like behavior, and restored body weight. Biochemically, MLT enhanced antioxidant defenses, including superoxide dismutase (SOD) and catalase (CAT), reduced pro-inflammatory cytokines, interleukin-1 beta (IL-1β), increased anti-inflammatory cytokines, interleukin-10 (IL-10), and restored neurotransmitter balance like dopamine and Gamma-Aminobutyric Acid (GABA). Mechanistically, MLT activated the IGF-1 signaling pathway, promoting neuronal survival and reducing apoptosis (Caspase-3 expression). Histopathological analyses confirmed that MLT preserved neuronal and glial integrity, reduced demyelination, and restored myelin basic protein (MBP) levels in brain and cerebrospinal fluid. The combination of MLT and EDR exhibited synergistic neuroprotective effects, surpassing the efficacy of individual treatments in reducing oxidative stress, inflammation, and neuronal damage. Behavioral and biochemical improvements were paralleled by systemic recovery, as evidenced by normalized hematological parameters and reduced methylmercury accumulation in brain tissues. These findings underscore MLT, particularly in combination with EDR, as a potent therapeutic agent for ALS, offering multi-targeted neuroprotection. Future studies should explore its translational potential in clinical settings for the treatment of neurodegenerative diseases.

RevDate: 2026-02-06

Hnath B, Ekambaram S, NV Dokholyan (2026)

Novel extracellular vesicle release pathway facilitated by toxic superoxide dismutase 1 oligomers.

Neurobiology of disease pii:S0969-9961(26)00053-7 [Epub ahead of print].

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease that results in paralysis and death within three to five years. Mutations in over forty different proteins have been linked to ALS, raising debate over whether ALS is a single disease or multiple disorders with similar symptoms. Mutations in Cu,Zn superoxide dismutase 1 (SOD1) are found in only 2-3% of ALS cases, yet misfolded SOD1 appears in both sporadic (sALS) and familial (fALS) patients. Furthermore, mutations in TDP-43 or FUS increase levels of misfolded SOD1 on extracellular vesicles (EVs). Small EVs isolated from ALS patient samples have been shown to cause death of wild-type motor neurons and myotubes, supporting the theory that EVs play a role in spreading disease. We hypothesize that the previously identified toxic trimeric SOD1 spreads via EVs in ALS and influences the distribution of other ALS-related proteins, suggesting a common mechanism. To test this, we isolate EVs from motor neuron-like cells expressing mutations that stabilize trimers. We then perform a sandwich enzyme-linked immunosorbent assay (ELISA) using a CD9 capture antibody to measure whether misfolded SOD1 and 17 other ALS-related proteins increase or decrease on EVs with trimer stabilization. We identify which EV release pathway is affected by trimeric SOD1 using endocytosis and exocytosis inhibitors and analyze altered protein interaction pathways through co-immunoprecipitation and mass spectrometry proteomics. Our results show that VAPB, VCP, and Stathmin-2 increase on EVs when trimers are stabilized. The common pathway linking these ALS-associated proteins and SOD1 appears to involve multiple mechanisms, including the Caveolae endocytosis pathway, pointing to a novel hybrid EV release pathway in ALS. Overall, our findings show that trimeric SOD1 influences EV cargo and spread in ALS.

RevDate: 2026-02-06

Komori S, Ito D, Hashizume A, et al (2026)

Characteristics of muscle cramps as a prodromal symptom of sporadic amyotrophic lateral sclerosis.

Journal of neuromuscular diseases [Epub ahead of print].

BACKGROUND: Prodromal symptoms of sporadic amyotrophic lateral sclerosis (SALS) including muscle cramps were reported; however, their detailed characteristics have not been sufficiently studied.

OBJECTIVES: To clarify the detailed profiles of prodromal symptoms in SALS.

METHODS: Patients with SALS (n = 47) and healthy controls (n = 25) were enrolled. A questionnaire-based survey was conducted to investigate symptoms before and after disease onset, including sensory, autonomic, sleep, cognitive disturbances, and frequent muscle cramps. Frequent muscle cramps were defined as those occurring at least twice per month in the lower limbs, or at least once per month in the upper limbs or trunk. We evaluated the relationship between surveyed symptoms and clinical characteristics.

RESULTS: Prodromal frequent muscle cramps were observed in 29.8% of SALS patients, most frequently in the lower limbs. With disease progression, the sites with cramps increased, and the frequency of cramps during awakening also increased. The SALS patients with prodromal cramps had greater lean mass than those without (p = 0.023). Multivariate analysis showed that the presence of cramps after disease onset was associated with a slower longitudinal decline in the ALSFRS-R score (p = 0.048). Upper limb-onset SALS patients experienced cramps more frequently before onset than bulbar-onset patients did (p = 0.033).

CONCLUSIONS: Frequent muscle cramps often precede muscle weakness during the prodromal phase of limb-onset SALS. The frequency of cramps increased with disease progression. Prodromal cramps were associated with lean mass, whereas cramps after disease onset were associated with a slower rate of disease progression.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Mukherjee R, Mehan S, Choudhary D, et al (2026)

Sulforaphane-Mediated Multitarget Therapeutic Effects in Methylmercury-Induced ALS-Like Pathology: Comparative Analysis and Multifaceted Approach to Neuroprotection and Systemic Recovery.

Molecular neurobiology, 63(1):422.

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder marked by motor neuron loss driven by oxidative stress, neuroinflammation, and dysregulated survival signaling. The objective of this study was to evaluate the neuroprotective efficacy and safety of sulforaphane (SUFP) in a methylmercury (MMHg[+])-induced preclinical rat model of ALS, with comparison to omaveloxolone (OVX) and dimethyl fumarate (DIMT). SUFP treatment, particularly at 4 mg/kg, significantly restored antioxidant defense mechanisms through upregulation of Nrf2, HO-1, and SIRT1 while suppressing pro-inflammatory cytokines (IL-1β, TNF-α), apoptotic markers (Bax, caspase-3), and stress-related signaling pathways including p75NTR, PI3K/Akt, and MAPKs. These molecular effects translated into meaningful functional recovery, as evidenced by improvements in grip strength, locomotor performance, spatial memory, and depressive-like behavior. Histopathological evaluation demonstrated attenuation of demyelination and preservation of neuronal architecture in cortical, hippocampal, and cerebellar regions. Beyond central neuroprotection, SUFP exerted systemic benefits by normalizing hepatic enzymes, improving skeletal muscle integrity, restoring redox balance, stabilizing neurofilament and myelin-associated proteins, and correcting hematological alterations. Comparative analysis revealed that SUFP conferred superior neuroprotection with a favorable safety profile relative to OVX and, although slightly less efficacious than DIMT, exhibited reduced systemic toxicity. Molecular docking further supported SUFP's interaction with Nrf2-Keap1 targets, reinforcing its antioxidant and anti-inflammatory mechanisms. Collectively, these findings identify SUFP as a multifaceted and well-tolerated therapeutic candidate for ALS, supporting its further translational and clinical evaluation.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Raymond J, Larson T, Nair T, et al (2025)

Age-period-cohort effect on motor neuron disease mortality in the United States, 2001-2020.

Frontiers in neurology, 16:1751690.

INTRODUCTION: Motor neuron diseases (MND) are progressively fatal diseases causing loss of motor neurons throughout the body. Recent studies have suggested an increase in prevalence and mortality of amyotrophic lateral sclerosis (ALS), the most common adult-onset MND. It is unclear whether the increase is because of earlier diagnosis or potentially new exposures. Age-period-cohort (APC) analysis can help identify contributors to temporal disease trends by differentiating impacts of biological aging, historical time period, and birth cohort. The aim of this study is to evaluate APC effects on MND mortality in the United States from 2001 to 2020.

METHODS: We analyzed deaths by MND for the period 2001-2020 in subjects aged 40-84 years. We used APC modeling to compute net drift, local drift, longitudinal age curve, rate ratios (RR), and confidence intervals (CI) for each period and cohort. Analysis used the APC Web Tool provided by the United States' National Cancer Institute.

RESULTS: Over the 20-year period, there were 119,890 MND deaths. Men consistently had higher mortality compared to women. Analysis yielded noteworthy birth cohort effects for men. For men, the cohort RR decreased from 1919 to 1953 and peaked again between 1959 and 1963. Men born after 1973 had a reduced RR = 0.77 (95% CI = 0.63-0.94). Women born after 1973 had a cohort RR = 1.00 (95% CI = 0.75-1.34).

CONCLUSION: APC analysis revealed potentially impactful age, period, and cohort effects in U.S. MND mortality between 2001 and 2020, with higher mortality among men and evidence of sex-specific cohort patterns. Cohort effects suggest potential generational differences in risk. Further investigation is needed to disentangle ascertainment effects from true etiologic influences.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Kim H (2026)

Task-invariant networks interfere with and task-specific networks support memory formation: An fMRI meta-analysis.

Imaging neuroscience (Cambridge, Mass.), 4:.

Why do some moments imprint themselves in memory while others vanish without a trace? This meta-analysis identifies a dissociation in large-scale brain networks during encoding: networks associated with impairing encoding are task-invariant, whereas those supporting it are task-specific. Drawing on 56 functional magnetic resonance imaging (fMRI) studies employing the subsequent memory paradigm, the analysis contrasted neural activity for later-remembered versus later-forgotten trials across verbal and pictorial tasks. Using Yeo et al.'s 17-network parcellation, the results show that encoding-impairing effects consistently recruit specific subsystems within the default mode, frontoparietal, and ventral attention networks-a pattern consistent with distraction or mind-wandering. Conversely, encoding-supporting effects diverge by task: verbal encoding engages language-related networks, whereas pictorial encoding activates visuo-perceptual systems. This asymmetry suggests that encoding failure may arise from similar attentional lapses across contexts, whereas successful encoding requires precise, context-sensitive neural engagement. Taken together, these findings provide a network-level perspective on how the brain shifts between states conducive to remembering and states conducive to forgetting.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Donkin A, Rodseth R, J Giddy (2026)

FDNHSA's response to KL Dunkle et al.'s 'Upholding clinical integrity and South African relevance: A defence of the SASOP position statement on the care of transgender and non-binary youth'.

The South African journal of psychiatry : SAJP : the journal of the Society of Psychiatrists of South Africa, 32:2602.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Cropper H, Mir F, Liu J, et al (2026)

Axonal dying back of upper motor neurons in human ALS.

Research square pii:rs.3.rs-8545414.

Patients with amyotrophic lateral sclerosis (ALS) present with arm, leg, or bulbar weakness with or without spasticity. While genetics plays a clear role in a subset of cases, it cannot explain why symptoms start focally or how upper (UMN) and lower motor neuron (LMN) systems are linked. Here, we examined the clinicopathological relationships between UMN and LMN disease in ten ALS patients. Detailed clinical assessments were obtained and tissues from the motor cortex, brainstem, and spinal cord were collected via a rapid autopsy protocol. Tissues were stained for UMN/LMN, myelin, axons, microglia, and pTDP43. Total RNA-sequencing was performed in the medulla, cervical, and lumbar spinal cords from each patient to identify pathways enriched at sites of disease onset. None of the patients had symptoms of frontotemporal dementia (FTD), but all had focal sites of clinical onset and spasticity, indicating both UMN and LMN involvement. Postmortem examination showed LMN degeneration and microglial activation were highest at sites of disease onset. In contrast, UMN degeneration of the corticospinal tract (CST) was present equally at all levels of the spinal cord up through the medulla, regardless of the site of disease onset. Surprisingly, there was no evidence of UMN degeneration of cortical motor neurons or their projecting axons above the brainstem. Similarly, while extensive pTDP43 aggregates were seen in degenerating LMNs, no pTDP43 aggregates were seen in UMN cell bodies or their axons. Mechanistically, RNA-sequencing implicated inflammatory pathways, especially at sites of disease onset. Our findings suggest that many ALS patients without FTD have a dying back of UMN axons, independent of the site of disease onset, which stops in the brainstem with preservation of cortical motor neurons and their proximal axons. Our findings suggest that UMN axonal degeneration can be directly triggered by LMN degeneration and inflammation.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Naddaf R, Shmilovich H, Carasso S, et al (2025)

Esophageal microbiome correlates with post-esophagectomy anastomotic leak in cancer patients.

ESMO gastrointestinal oncology, 8:100172.

BACKGROUND: Despite continuous improvement in long-term survival after esophagectomy, potential serious post-operative complications, such as anastomotic leaks (ALs), still occur. Several risk factors for ALs have been proposed, including environmental factors. Our main objective was to examine the correlation of esophageal tumor microbiome composition and functional profile with ALs. Additionally, we analyzed the microbiome of esophageal tumors and their potential correlation with clinical features of the patients.

MATERIALS AND METHODS: Surgical specimens of esophageal tumors and adjacent normal tissues were collected from consecutive patients who underwent an esophagectomy. Formalin-fixed paraffin-embedded (FFPE) tissue samples were processed using 16S ribosomal DNA multiple fragments amplicon sequencing to characterize bacterial microbiome composition. The tumor and normal tissue microbiome and bacterial functional profile were analyzed based on the clinical outcome of ALs.

RESULTS: Out of 60 patients who met the inclusion criteria, 52 (86.7%) patients had both normal adjacent tissue (NAT) and tumor (T) FFPE samples included with sufficient bacterial DNA extracted for analysis. A total of 28% of participants had esophageal ALs. Proportion tests [P < 0.05, false discovery rate (FDR) < 0.25] revealed operational taxonomic units (OTUs) significantly present in T samples as opposed to NAT samples, as well as significantly present OTUs in patients with AL as opposed to patients without AL complication.

CONCLUSIONS: In this study, we provide a profile of the understudied esophageal microbiome and its connection to ALs. Our results can provide potential clues on how to avoid ALs by considering a patient's personal microbiome when providing perioperative care.

RevDate: 2026-02-06
CmpDate: 2026-02-06

Peng J, Fan T, Wang J, et al (2026)

Current potential biomarkers for Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis: review of literature.

Dialogues in clinical neuroscience, 28(1):17-39.

INTRODUCTION: Alzheimer's disease (AD), Parkinson's disease (PD) and amyotrophic lateral sclerosis (ALS) are several common neurodegenerative diseases (NDs). At present, is the lack of effective diagnosis, progression, prognosis and therapeutic biomarkers. it is a urgent demand to search the relevant confident biomarkers.

AREA COVERED: This review systematically analysed the potential biomarkers of blood, cerebrospinal fluid, neuroimaing and emerging non-invasive indicators, and synthesises current evidences on the biomarkers of AD, PD and ALS about diagnosis, progression, prognosis and therapeutic, especially diagnosis biomarkers.

EXPERT COMMENTARY: In this review, we focus on discussing relevant diagnosis, progression, prognosis and therapeutic biomarkers for AD, PD and ALS in recent years, and prospecting the possible future directions of relevant biomarkers.

RevDate: 2026-02-06

Iammeechai W, Srikulmontri T, BAA White (2026)

Emotional intelligence development in medical education: A scoping review of educational interventions.

Medical teacher [Epub ahead of print].

Background and aims: Emotional intelligence (EI) is an essential competency for physicians. Medical educators seek educational interventions to cultivate EI in their learners. This scoping review aimed to conceptualize current knowledge about educational interventions for developing EI in medical education. Methods: This study adopted the first five stages of Levac et al.'s scoping review framework, which builds on Arksey and O'Malley's scoping review methodology. The authors accessed three databases-PubMed, CINAHL, and PsycINFO-to review the literature from 2014 to February 2025. Two authors (WI and TS) independently screened the literature for eligibility. A third author (BAAW) resolved any discrepancies. Two authors (WI and BAAW) charted the eligible articles. Results: Of the 638 studies, 64 were eligible. Approximately one-third of eligible studies focused on interventions for medical students. Stress management, leadership, communication, and professionalism were key topics integrated into EI development interventions. Various methods were employed, such as small-group discussions, case-based discussions, and simulations. Most studies used self-rating questionnaires as assessment tools. Half of the studies (56.25%) reported positive impacts from their interventions. Conclusions: The findings could serve as a guide for educators and researchers seeking to implement or study such interventions.

RevDate: 2026-02-05

McDonald DW, Chugh N, Sava R, et al (2026)

FUS and TDP-43 aggregation are uncoupled from toxicity in ageing yeast models.

BMC biology pii:10.1186/s12915-026-02537-3 [Epub ahead of print].

BACKGROUND: Protein aggregation is indicative of the loss of proteostasis associated with neurodegenerative diseases, including Amyotrophic Lateral Sclerosis (ALS) and Frontotemporal Dementia (FTD). Proteins like Fused in sarcoma (FUS) and Tar DNA-binding protein 43 (TDP-43) accumulate and aggregate in the cytosol of neurons in ALS/FTD. Yet, it remains unclear how ageing affects FUS and TDP-43 aggregation, and how these aggregates in turn influence neurodegeneration in ALS/FTD. In addition, mistranslation can reduce longevity, challenge proteostasis, and modulate protein aggregation. To investigate how ageing and mistranslation modulate FUS and TDP-43 aggregation and toxicity, we enlist tractable and reliable yeast models.

RESULTS: Using optimized low-expression FUS and TDP-43 yeast models, we demonstrate that chronological ageing antagonizes proteostasis, the steady state levels and solubility of molecular chaperones, and aggregation of FUS and TDP-43. In addition, mistranslation caused by tRNA variants further antagonize FUS and TDP-43 aggregation and synergize to exacerbate FUS and TDP-43 cytotoxicity.

CONCLUSIONS: Our work provides new insights into factors that uncouple FUS and TDP-43 aggregation from toxicity and support a rather protective role for FUS and TDP-43 aggregates in promoting longevity.

RevDate: 2026-02-05

Liu H, Liu M, Liu Y, et al (2026)

C9orf72 hexanucleotide repeat RNA drives transcriptional dysregulation through genome-wide DNA:RNA hybrid G-quadruplexes.

Neuron pii:S0896-6273(25)00932-8 [Epub ahead of print].

A hexanucleotide repeat expansion in C9orf72 is the most common genetic cause of amyotrophic lateral sclerosis and frontotemporal dementia. While repeat RNAs are implicated in disease pathogenesis, their mechanisms of action remain incompletely understood. Here, we show that GGGGCC repeat RNA engages chromatin genome-wide preferentially at promoter regions in patient cells. This interaction obstructs RNA polymerase II and transcription factors with GC-rich motifs, leading to broad transcriptional repression. Biochemical assays, single-molecule imaging, and native bisulfite sequencing analyses demonstrate that GGGGCC repeat RNA intrinsically forms DNA:RNA hybrid G-quadruplexes (HQs) with cognate DNA, providing a structural basis for transcriptional interference. Stabilization of these G-quadruplex structures exacerbates neuronal vulnerability to metabolic stress in patient-derived motor neurons and cortical organoids, whereas restoring key gene dysregulation improves resistance. These findings uncover a previously unrecognized trans-acting mechanism whereby repetitive RNAs form hybrid structures with genomic DNA, disrupt gene regulation, and contribute to neurodegeneration.

RevDate: 2026-02-05

Cásedas G, Rojas-Márquez H, Ventura L, et al (2026)

Involvement of Keap1/Nrf2 and the antioxidant defence in cytoprotective effects induced by cannabis polyphenols in SH-SY5Y neuronal cells.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 196:119048 pii:S0753-3322(26)00080-6 [Epub ahead of print].

Oxidative stress (OS) is widely recognized as a central promoter to the pathogenesis of neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS) and primary lateral sclerosis (PLS). Cannabis sativa L. synthesizes a complex array of bioactive compounds that extends well beyond the well-known cannabinoids to include a diverse suite of polyphenols, terpenes, fatty acids, tocopherols, and proteins. The non-cannabinoid polyphenolic fraction is composed primarily of flavonoids, stilbenoids, lignans, and lignanamides, which contribute substantially to the plant's antioxidant, anti-inflammatory, and neuroprotective properties. This study investigates the redox-modulating and cytoprotective properties of a polyphenolic fraction derived from Cannabis sativa L. in SH-SY5Y neuroblastoma cells. Neurons were treated with various concentrations of the aqueous polyphenolic cannabis extract and exposed to oxidative stress using hydrogen peroxide (100 µM). Protein and gene expression related to redox signalling were analyzed via Western blot and qPCR, and molecular docking studies were performed in silico. Furthermore, antioxidant enzymes activity was measured by spectrophotometry. Results revealed that the phenolic fraction significantly activated the Keap1/Nrf2 pathway, increased expression of PRDX1 and PRDX3, and enhanced endogenous antioxidant defences. Simultaneously, it reduced endoplasmic reticulum stress-induced apoptosis (via Bax/Bcl-2 modulation) and attenuated inflammatory markers, including NO, NF-κB2, IL-6, and IL-8. In silico docking studies identified Leu583 as a key residue in Nrf2-ligand interactions. These findings suggest that Cannabis sativa L. polyphenols are key bioactive compounds modulating redox homeostasis and inflammation, and offering neuroprotective benefits with potential relevance in diseases involving mitochondrial dysfunction and oxidative damage.

RevDate: 2026-02-05

Ma Z, Zheng J, Wang H, et al (2026)

A Novel Classification of Esophageal Anastomotic Leaks and Its Impact on Healing Time After Esophagogastrostomy.

Cancer research and treatment pii:crt.2025.1029 [Epub ahead of print].

PURPOSE: Anastomotic leakage (AL) is a severe complication after esophagogastrostomy, yet the classifications of AL and their associated healing times are poorly understood.

MATERIALS AND METHODS: This study retrospectively analyzed 117 cases of AL among 2,728 patients who underwent esophagectomy with circular stapled esophagogastric anastomosis at Tianjin Medical University Cancer Institute and Hospital from January 1, 2019, to March 31, 2024. AL cases were categorized into four types based on the direction of leakage (anterior, right, posterior, and left). The differences in healing times among these four types were analyzed using the log-rank test. A multivariable Cox model was used to identify factors associated with healing time.

RESULTS: The incidence of AL was 4.3% (117/2728), with a median occurrence time of 9 days (Interquartile Range[IQR]: 5) and a median healing time of 56 days (IQR:64). Single cervical ALs accounted for 17.5%, with significantly shorter healing times compared to intrathoracic leaks (33 days vs. 61 days, p=0.018). Right-sided leaks were the most common (49.6%), while left-sided leaks healed faster than right- and posterior-sided leaks (42 days vs. 63 days vs. 70 days, p<0.05). Body Mass Index (BMI), diabetes, and neoadjuvant therapy did not influence healing time. In 117 AL patients, the occurrence of tracheoesophageal fistula (p=0.004) and the placement of trans-fistula reverse drainage tubes (p=0.002) were associated with healing time.

CONCLUSION: These findings provide valuable insights for clinicians to better understand the mechanisms of AL development and predict the healing times.

RevDate: 2026-02-05
CmpDate: 2026-02-05

Fernandez R, M Sívori (2026)

[Clinical scale of ventilatory failure risk in patients with amyotrophic lateral sclerosis].

Medicina, 86(1):60-72.

INTRODUCTION: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease that causes atrophy and paralysis of skeletal muscles, including respiratory muscles. The development of ventilatory failure determines the prognosis. The primary outcome was to determine which common clinical variables can be predictors of daytime hypercapnia and develop a risk model of ventilatory failure. Secondary outcome was to determinate the survival rate of high-risk patients with and without hypercapnia.

MATERIALS AND METHODS: Retrospective study. Patients with ALS without mechanical ventilation were selected and followed from June 2015 to May 2024. They underwent arterial blood carbon dioxide measurement and classified into two groups: hypercapnic (pCO2 ≥45 mmHg) and normocapnic (pCO2 <45 mmHg). Different predictive models for hypercapnia were constructed.

RESULTS: An association between orthopnea (p=0.0001), dyspnea (p=0.02) and FVC <50% (p=0.04) was found. The predictive model constructed with the following variables: orthopnea, dyspnea and ALSFRS-R score ≤21, presented a good performance on the detection hypercapnia risk. A score > 23 points had a sensitivity of 80.6% and a specificity of 72.8% for detecting patients at high risk of hypercapnia. Normocapnic patients at high risk who start mechanical ventilation before developing hypercapnia improve their survival rate by 6 months (p=0.17).

DISCUSSION: The risk score includes easily obtained clinical variables and is effective in detecting patients at risk for hypercapnia. Initiating mechanical ventilation in at-risk patients who have not yet developed hypercapnia has a clinically significant impact on survival.

RevDate: 2026-02-05
CmpDate: 2026-02-05

Jiang X, Schaeffer L, Patni D, et al (2026)

Blocking RAN translation without altering repeat RNAs rescues C9ORF72-related ALS and FTD phenotypes.

Science (New York, N.Y.), 391(6785):eadv2600.

GGGGCC (G4C2) repeat expansion in C9ORF72 is the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Toxicity is thought to result from the accumulation of either repeat RNAs and/or dipeptide repeat proteins (DPRs) translated from repeat-containing transcripts through repeat-associated non-AUG (RAN) translation. To disentangle RNA from DPR toxicity, we mutated a CUG codon predominantly used to initiate DPR translation from all three reading frames. This mutation disrupted DPR synthesis while preserving the expression of repeat-containing RNAs. Despite the accumulation of RNA foci, behavioral deficits and pathological abnormalities, including p-TDP-43 inclusions, STING activation, motor neuron loss, neuroinflammation, and increased plasma neurofilament concentration, were alleviated in C9ORF72 mice. Base editing of the CUG codon also improved molecular phenotypes and survival in patient induced pluripotent stem cell-derived neurons, which highlights the potential of therapeutically targeting DPR production rather than repeat RNAs.

RevDate: 2026-02-05
CmpDate: 2026-02-05

Wells TL, Galani M, Popoli R, et al (2026)

Compensatory scaling of modulatory neural populations in response to motor challenges.

Proceedings of the National Academy of Sciences of the United States of America, 123(6):e2519741123.

Precise and adaptable movements are achieved by well-regulated muscle contractions, which are mainly governed by the excitability of motor neurons. Several neuromodulatory systems originating in the motor cortex, brainstem, and spinal cord regulate motor neuron excitability via the release of neurotransmitters such as acetylcholine and serotonin. However, these systems can have seemingly similar effects on motor neuron output, raising questions about interaction during movement. To address this, we investigated two modulatory systems in mice: the cholinergic V0c interneurons in the spinal cord and the serotonergic system in the brainstem. Electromyographic and behavioral recordings revealed that, when compared to control mice, mice whose V0c interneuron cholinergic output was genetically inactivated failed to display speed-dependent modulation of the gastrocnemius muscle, and exhibited lower amplitude bursting in the gastrocnemius muscle during swimming. c-Fos expression in this population during locomotion also indicated that they are active in a speed-dependent manner. Relative to control mice, those mice whose V0c interneurons had their cholinergic output inactivated showed upregulated activity in motor-related serotonergic populations while trotting at higher speeds but not while walking at lower speeds, indicating that serotonin plays a compensatory role in the absence of functional V0c interneurons. Last, we observed a progressive recruitment of these two populations in mice with amyotrophic lateral sclerosis, and the recruitment of serotonergic neurons is hastened in those mice whose V0c interneurons had their cholinergic output inactivated. These findings highlight that modulatory systems scale their activity to match motor demand across various circumstances.

RevDate: 2026-02-05

Alhajeri MM, Abukhaled Y, Alkhanjari RR, et al (2026)

Neuroglial Function and Hormonal Modulation in Neurodegenerative Diseases: The Influence of Sex Hormones.

Cellular and molecular neurobiology pii:10.1007/s10571-026-01674-1 [Epub ahead of print].

Astrocytes, microglia, and oligodendrocytes, key neuroglial cell types, are essential for central nervous system (CNS) homeostasis, immune regulation, and neuronal support. In neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), and amyotrophic lateral sclerosis (ALS), glial dysfunction contributes to pathogenesis via chronic inflammation, synaptic disruption, oxidative stress, and impaired myelination. Growing evidence highlights the regulatory influence of sex hormones on glial function. These hormones modulate inflammatory tone, synaptic remodeling, and remyelination, potentially contributing to sex-based differences in disease incidence, progression, and treatment response. This review synthesizes current understanding of glial involvement in neurodegeneration and examines how gonadal hormones interact with astrocytes, microglia, and oligodendrocytes. By integrating glial biology with neuroendocrinology, we propose that hormone-glia interactions represent promising, personalized targets for sex-informed therapies in CNS disorders.

RevDate: 2026-02-05

Sun Y, Huang C, Pan Y, et al (2026)

Correction: Muscle Fibrosis in Amyotrophic Lateral Sclerosis: Molecular Mechanisms, Diagnostic Advances, and Therapeutic Strategies.

Molecular neurobiology, 63(1):418 pii:10.1007/s12035-026-05721-2.

RevDate: 2026-02-05
CmpDate: 2026-02-05

Marcinkowska K, Wrzesińska-Krupa B, A Obrępalska-Stęplowska (2026)

Insights Into Sequences of Viral and Bacterial Origin in the Metatranscriptome of Centaurea cyanus L. Susceptible and Resistant to Acetolactate Synthase (ALS)-Inhibiting Herbicides.

Environmental microbiology reports, 18(1):e70287.

Cornflower (Centaurea cyanus L.) is a widespread weed in cereal crops and is commonly controlled with sulfonylurea herbicides. In Poland, populations of cornflower resistant to acetolactate synthase inhibiting herbicides, such as tribenuron-methyl, have been increasingly reported. Both target-site and non-target-site resistance mechanisms may contribute to this phenomenon. Plant-associated microorganisms are known to play essential roles in alleviating abiotic stress. Moreover, weeds are considered reservoirs of plant pathogenic viruses. Since bacteria and viruses associated with cornflower have not been analysed to date, data mining was undertaken to identify viral and bacterial sequences in metatranscriptome datasets obtained from plant biotypes that are both susceptible and highly resistant to tribenuron-methyl. Using MEGAN6 and Kraken2, taxonomic classification revealed the presence of sequences of two double-stranded RNA viruses belonging to the family Partitiviridae, which have not been described before. For bacterial sequences, 19 genera were identified, including Bacillus, Mesorhizobium and Acinetobacter, some of which are associated with plant growth promotion or xenobiotic degradation. Although the presence of partitiviruses was unrelated to herbicide resistance status, some bacterial genera (e.g., Rothia) were more abundant in resistant than in susceptible plants. These results suggest that those bacterial genera present in weeds may be involved in counteracting ALS-inhibiting herbicides.

RevDate: 2026-02-05

Varderidou-Minasian S, Jakobs CE, Pasteuning-Vuhman S, et al (2026)

Mesenchymal stem cell-derived extracellular vesicle treatment of induced pluripotent stem cell-derived motor neurons with different amyotrophic lateral sclerosis genetic backgrounds.

Neural regeneration research pii:01300535-990000000-01193 [Epub ahead of print].

Motor neurons derived from induced human pluripotent stem cells offer a powerful model to study motor neuron diseases, such as amyotrophic lateral sclerosis. While widely used, our knowledge of the proteomic changes in these models is rather rudimentary. In this study, we conducted a comparative proteomic analysis of induced pluripotent stem cell-derived motor neurons carrying amyotrophic lateral sclerosis-associated mutations in C9ORF72, TARDBP, or FUS. This revealed both mutation-specific and shared proteomic signatures, unveiling common and divergent disease mechanisms. Using these new insights, we then evaluated the therapeutic potential of mesenchymal stem cell-derived extracellular vesicles. These experiments showed a functional effect of mesenchymal stem cell-derived extracellular vesicles in amyotrophic lateral sclerosis-FUS motor neurons in vitro and their ability to reverse proteomic changes more generally in motor neurons with different amyotrophic lateral sclerosis genetic backgrounds. These findings highlight key molecular pathways involved in amyotrophic lateral sclerosis at the protein level and support the potential of mesenchymal stem cell-derived extracellular vesicles as a versatile therapeutic approach.

RevDate: 2026-02-05
CmpDate: 2026-02-05

Zhang Y, Wang JJ, Xing HY, et al (2026)

Neurofeedback for autism spectrum disorder: Current evidence, challenges, and future directions.

World journal of psychiatry, 16(2):114358.

Neurofeedback therapy (NFT) has emerged as a promising noninvasive intervention for autism spectrum disorder (ASD), targeting core symptoms such as social communication deficits and emotional dysregulation. This editorial synthesizes findings from recent studies, including Wang et al's retrospective analysis (2025), which reported improvements in Social Responsiveness Scale and Aberrant Behavior Checklist scores following NFT combined with conventional therapy. Mechanistically, NFT may modulate prefrontal gamma-band activity, enhances neuroplasticity in social brain networks (e.g., default mode network, a brain network involved in social cognition), and optimizes cognitive processing via event-related potential changes (e.g., shortened P300 latency). Emerging trends include hybrid approaches (e.g., NFT with repetitive transcranial magnetic stimulation and artificial intelligence-driven protocols). However, challenges persist in protocol standardization, long-term efficacy validation, and biomarker identification. Future research must prioritize large-scale randomized trials, neuromarker discovery, and individualized protocols to establish NFT as a viable component of precision psychiatry for ASD.

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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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Amyotrophic Lateral Sclerosis, or ALS, is a rare, incurable neuro-degenerative disease, of unknown etiology. With this disease, both upper (brain) and lower (spinal cord) motor neurons progressively degenerate and die, rendering immobile the muscles that they innervated. For anyone with a need or desire to appreciate what is known about ALS, this book provides a good foundation. R. Robbins

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