Alzheimers

SPP1 Marked Shared Microglia Programs in Neurodegeneration

June 7, 2026 by BrainASAP

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: …

Blood Inflammation Linked to Brain White-Matter Microstructure

June 6, 2026 by BrainASAP

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 …

Brain-Organ Hypersynchrony Linked to Alzheimer’s Cognitive Decline

May 29, 2026 by BrainASAP

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), …

Type I Interferon CD8 T Cells Clustered Around Amyloid Plaques

May 29, 2026 by BrainASAP

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 …

PTP1B Inhibition Reduced Amyloid-Beta in Alzheimer’s Mice

May 26, 2026 by BrainASAP

TL;DR: A 2026 mouse study in Proceedings of the National Academy of Sciences found that deleting or inhibiting PTP1B improved memory behavior, reduced amyloid-beta burden, and pushed microglia toward an amyloid-clearing state. Key Findings Memory behavior improved: APP/PS1 mice lacking PTP1B performed better in novel object recognition and Morris water maze tests; the PTP1B inhibitor …

AT(N) Blood Biomarkers Were Often Abnormal in Older Adults With Epilepsy

May 23, 2026 by BrainASAP

TL;DR: A 2026 medRxiv preprint applied the AT(N) framework, an Alzheimer’s disease biomarker system for amyloid, tau, and neurodegeneration, to 84 older adults with focal epilepsy and found that only 32.1% had normal blood biomarkers, while early-onset epilepsy carried higher odds of biomarker abnormality. Key Findings Epilepsy cohort: Researchers analyzed focal epilepsy participants from the …

Virgin Olive Oil Linked Gut Microbes to Cognition

May 22, 2026 by BrainASAP

TL;DR: A 2026 study in Microbiome found that in older adults at metabolic risk, virgin olive oil was linked to better cognitive preservation and richer gut microbiota, while common refined olive oil pointed the other way. Key Findings Metabolic-risk cohort tracked over time: The analysis followed 656 older adults who were 55-75 years old, cognitively …

Redox Switches Amplified Alzheimer’s Neuroinflammation

May 21, 2026 by BrainASAP

TL;DR: A 2026 study in Cell Chemical Biology found that alzheimer’s inflammation may be driven by a specific chemical switch: S-nitrosylation of STING at cysteine 148, which pushed innate immune signaling toward synaptic damage. Key Findings STING carried the redox switch: The study identified S-nitrosylation of human STING at cysteine 148 as a redox modification …

Midlife Vitamin D Linked to Lower Brain Tau Decades Later

May 21, 2026 by BrainASAP

TL;DR: A 2026 study in Neurology Open Access found that in 793 dementia-free adults, higher vitamin D levels around age 39 were associated with less tau readout on PET brain imaging about 16 years later, while amyloid beta did not show the same relationship. Key Findings 793 dementia-free adults: Participants had vitamin D measured in …

Three Blood p-tau217 Tests All Nailed Alzheimer’s Diagnosis

May 20, 2026 by BrainASAP

TL;DR: A 2026 study in Translational Psychiatry found that three different plasma p-tau217 assays separated Alzheimer’s dementia from controls and frontotemporal degeneration with excellent accuracy, shifting the test from whether the marker works to which platform clinics can deploy. Key Findings Three p-tau217 assays all performed strongly: The cohort included 39 cognitively unimpaired controls, 28 …

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