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SPP1 Marked Shared Microglia Programs in Neurodegeneration

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SPP1 Marked Shared Microglia Programs in Neurodegeneration

TL;DR: A 2026 study in Glia used human single-nucleus RNA sequencing datasets and mouse validation to identify a shared neurodegeneration-linked microglial transcription program, highlighting SPP1 as a disease-associated microglia marker. Key Findings Five disease contexts: The analysis integrated human microglia datasets from Alzheimer’s disease, Parkinson’s disease, amyotrophic lateral sclerosis, frontotemporal dementia, and aging. Single-nucleus RNA-seq: …

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Anxiety in ALS Was Driven Mostly by Depression Symptoms

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Anxiety in ALS Was Driven Mostly by Depression Symptoms

TL;DR: A 2026 BJPsych Open study found clinically significant anxiety in about 18% of non-demented ALS patients for state anxiety and 14% for trait anxiety, with anxiety scores driven mainly by cognitive-affective depression symptoms rather than motor severity. Key Findings ALS cohort: The study compared 433 non-demented ALS patients with 313 healthy controls. State anxiety: …

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White Matter Hyperintensities Tracked ALS Progression and Survival

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White Matter Hyperintensities Tracked ALS Progression and Survival

TL;DR: A 2026 medRxiv preprint found that white matter hyperintensity (WMH) burden, the amount of MRI-visible white-matter injury, was greater and progressed faster in amyotrophic lateral sclerosis (ALS), with progression tied to worse motor and cognitive scores. Key Findings 369-person MRI sample: Researchers analyzed 204 ALS patients and 165 healthy controls from the Canadian ALS …

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C9orf72 Myeloid Cells Restrained Microbial Inflammation

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C9orf72 Myeloid Cells Restrained Microbial Inflammation

C9orf72 Myeloid Cells Restrained Microbial Inflammation TL;DR: A gut-microbe signal called bacterial glycogen triggered damaging inflammation when C9orf72-deficient immune cells could not restrain it, linking an ALS/FTD gene to gut-brain immune control. Key Findings Ten bacterial strains triggered C9orf72-dependent cytokine release: The inflammatory response depended on how myeloid immune cells handled microbial signals. Bacterial glycogen …

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TDP43 Failure Disrupts DNA Repair in ALS and FTD

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The Broken Repair Crew: How TDP43 Sabotages Genome Stability TL;DR: TDP43, the protein that misfires in ALS and FTD, secretly controls DNA repair genes—and when it breaks, mutations pile up in neurons, potentially explaining both neurodegeneration and the cancer link in these diseases. A protein known for its role in neurodegenerative disease has a hidden …

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PCSK9 Inhibitors May Increase Parkinson’s Disease & Reduce ALS Risk (2024 Study)

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PCSK9 inhibitors significantly reduce the risk of amyotrophic lateral sclerosis (ALS) but increase the risk of Parkinson’s disease (PD). Highlights: ALS Risk Reduction: PCSK9 inhibitors marginally reduced the risk of ALS with an odds ratio of 0.89 (p = 0.048). PD Risk Increase: PCSK9 inhibitors increased the risk of Parkinson’s disease, with an odds ratio …

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