TL;DR: A 2026 preprint in medRxiv reported that serum myelin oligodendrocyte glycoprotein (MOG) protein was higher in multiple sclerosis than controls and higher during clinical relapse than remission. Key Findings 20.5 pg/ml higher: Serum MOG protein was higher in MS than healthy donors by a mean difference of 20.5 pg/ml. 27.5 pg/ml higher: MS samples …
TL;DR: A 2026 population-based matched cohort study in British Journal of Psychiatry found that risperidone use was associated with increased stroke risk, adjusted hazard ratio 1.28, while absolute stroke incidence was especially high in people with prior stroke or cardiovascular disease. Key Findings Matched dementia comparison: The analysis compared stroke risk among risperidone users and …
TL;DR: A 2026 medRxiv preprint linked higher blood inflammatory markers with diffusion MRI signs of altered white-matter microstructure in 457 dementia-free middle-aged and older adults, especially for a combined cytokine score and orientation dispersion index. Key Findings 457 dementia-free participants: The cross-sectional study examined adults with a mean age of 63.82 years and used blood …
TL;DR: A 2026 Neurological Sciences study followed 216 early Parkinson’s patients for 2 years after levodopa started and found that several non-motor symptom differences between men and women persisted or emerged despite adjustment for baseline scores and levodopa dose. Key Findings 216 early Parkinson’s patients completed 24-month follow-up after starting levodopa, including 139 men and …
TL;DR: A 2026 study in Neurology found that higher autonomic symptom burden in moderate-advanced dementia with Lewy bodies was linked to worse cognitive fluctuations, higher neuropsychiatric burden, and lower caregiver quality of life over time. Key Findings Autonomic burden was measured longitudinally across 189 people with moderate-advanced dementia with Lewy bodies. Higher Autonomic Symptom Checklist …
TL;DR: A 2026 medRxiv preprint found that specific AD8 dementia-screening items, especially judgment, repetition, finances, tool use, and daily memory problems, tracked functional and psychosocial vulnerability in 144 Chinese-speaking older adults. Key Findings Small community sample: The cross-sectional study included 144 Chinese-speaking adults with a mean age of 73.1 years. Three AD8 domains: Exploratory factor …
TL;DR: A 2026 modeling study in Journal of Mathematical Biology found that delayed unfolded protein response (UPR), a cellular stress program that slows protein production, could make toxic prion protein either die out, persist, or oscillate as it spreads through a brain-connectome model. Key Findings The model tracked PrPC and PrPSc: Researchers modeled normal cellular …
TL;DR: A 2026 medRxiv preprint found psychomotor retardation, meaning slowed movement, speech, and thinking during depression, was linked to higher later Parkinson’s diagnosis risk in 6,327 London mental-health records. Key Findings Psychomotor retardation was common: Among 6,327 people with depression at age 40 or older, 2,402 patients, or 38.0%, had psychomotor retardation documented in records. …
TL;DR: A 2026 medRxiv preprint used total-body tau PET in Alzheimer’s disease and found stronger brain-organ network synchrony, a pattern that tracked cognitive impairment through cortical tau burden and MRI markers of glymphatic dysfunction. Key Findings Small imaging cohort: Researchers compared 28 Alzheimer’s disease patients with 23 matched negative controls using positron emission tomography (PET), …
TL;DR: A 2026 Nature Communications paper found that late-stage amyloid beta plaques in APP23 mice recruited CD8 T cells with a type I interferon program, linking Alzheimer-like amyloid pathology to a more adaptive immune response around plaques. Key Findings 21,156 immune cells profiled: The team used single-cell RNA and VDJ sequencing on CD45-positive brain immune …
