Neuroscience

Boosting Astrocyte Sox9 Improved Amyloid Plaque Clearance and Preserved Cognition in Alzheimer’s Mouse Models

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Boosting Astrocyte Sox9 Improved Amyloid Plaque Clearance and Preserved Cognition in Alzheimer's Mouse Models

TL;DR: A 2026 study in Nature Neuroscience from Baylor College of Medicine showed that boosting Sox9, a transcription factor that regulates aging astrocytes, improved astrocytes’ ability to clear amyloid plaques in Alzheimer’s mouse models and preserved cognitive function — pointing to a treatment strategy that targets the brain’s own support cells rather than directly attacking …

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Monocyte Epigenetic Aging Tracked Non-Somatic Depression in Women With and Without HIV

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Monocyte Epigenetic Aging Tracked Non-Somatic Depression in Women With and Without HIV

TL;DR: A 2026 study in The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences measured a monocyte-specific DNA methylation clock (MonoDNAmAge) in 440 women with and without HIV, and found that accelerated monocyte epigenetic aging was specifically linked to non-somatic depressive symptoms (anhedonia, hopelessness, cognitive impacts) but not to broader depression severity, supporting …

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Longer Breastfeeding Predicted Better Self-Control at Age 3.5 in Quebec Longitudinal Cohort

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Longer Breastfeeding Predicted Better Inhibitory Control at Age 3.5 in Quebec Longitudinal Cohort

TL;DR: A 2026 longitudinal study in Appetite following 491 Quebec children found that infants breastfed for at least three to six months showed better inhibitory control — the ability to suppress an automatic response — at age three and a half than infants who were never breastfed, with the largest behavioral benefits in those breastfed …

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Connexin 36 Loss Disrupted Thalamocortical Synchrony in Mice

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Connexin 36 Loss Disrupted Thalamocortical Synchrony

Connexin 36 Loss Disrupted Thalamocortical Synchrony TL;DR: Deleting connexin 36 left broad sleep architecture mostly intact but disrupted fast brain electrical rhythms measured by electroencephalography (EEG), along with sensory-response markers often discussed in neuropsychiatric disease. Key Findings Sleep architecture mostly held: Cx36 knockout mice did not show a broad collapse of sleep-wake organization. Fast rhythms …

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Connectome-seq Maps Brain Wiring With RNA Barcodes at Single-Synapse Resolution

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Connectome-seq Turned Synapses Into Barcodes

Connectome-seq Turned Synapses Into Barcodes TL;DR: Connectome-seq is a 2026 Nature Methods platform that maps brain wiring by combining engineered synaptic proteins, RNA barcodes, single-nucleus sequencing, and single-synaptosome sequencing. In a mouse pontocerebellar circuit, the method linked synaptic connections to the molecular identities of connected neurons, turning a wiring map into something sequencing can read. …

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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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MRI Brain Age Mapped Stroke Recovery in 501 Patients

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Brain Age MRI Mapped Stroke Recovery in 501 Patients

Brain Age MRI Mapped Stroke Recovery in 501 Patients TL;DR: A Lancet Digital Health ENIGMA study found that larger stroke lesions made the damaged hemisphere look biologically older, while severe motor impairment was linked to younger-appearing contralesional networks, likely reflecting compensation. Key Findings 501 chronic stroke survivors: The ENIGMA Stroke Recovery Working Group dataset included …

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Blood GFAP Tracked Brain GFAP After Blood-Brain Barrier Leak

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Blood GFAP Started Mirroring the Brain Only After the BBB Leaked

Blood GFAP Started Mirroring the Brain Only After the BBB Leaked TL;DR: Blood biomarkers mostly failed to mirror the brain while the blood-brain barrier stayed intact; once the barrier leaked, glial fibrillary acidic protein (GFAP), an astrocyte injury protein, and inflammatory signals started lining up across blood and cerebrospinal fluid (CSF), the fluid surrounding the …

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AI Brain Connectivity Biomarkers for Cognition Shifted Across Pipelines

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AI Brain Biomarkers Shift When Models Pick Different Features

AI Brain Biomarkers Shift When Models Pick Different Features TL;DR: Across more than 12,000 participants and 13 outcomes, overlooked brain-connectivity features predicted cognition and psychiatric traits nearly as well as top-ranked features, but pointed to different underlying circuits. Key Findings Hidden features held predictive power: The authors tested their idea across HBN, ABCD, HCPD, and …

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CAR Astrocytes Cleared Amyloid in Alzheimer’s Mice

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CAR Astrocytes Cleared Amyloid in Alzheimer's Mice

TL;DR: A CAR-style therapy aimed at astrocytes turned brain support cells into amyloid cleaners, preventing plaque development and cutting existing plaque burden by about half in mice. Key Findings Plaque-free prevention arm: Young mice treated before plaques formed were reported plaque-free at nearly 6 months, when untreated Alzheimer-model mice are normally saturated. 50% plaque reduction: …

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