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This week, scientists on Twitter discussed new functions for autism-linked genes, underpinnings for restricted and repetitive behaviors, and roles for microglia.
MIT research shows that in people carrying the APOE4 risk variant, a key brain cell type mismanages cholesterol needed to insulate neurons properly — another sign that APOE4 contributes to Alzheimer's disease by disrupting lipids in the brain.
Study in cells and mice suggests that the variant APOE4 affects the all-important insulation around nerve cells
When people carry the Alzheimer's associated APOE4 gene, oligodendrocytes fail to transport fatty molecules to wrap neurons that make brain circuitry connections. This deficit of myelin may contribute to the pathology and symptoms of Alzheimer's disease.
A gene recognized as the strongest risk factor for Alzheimer's disease (AD) alters the way cholesterol moves around the brain and as we age, this altered movement likely contributes to loss of learning and memory, a team of researchers from the Icahn School of Medicine at Mount Sinai and the Massachusetts Institute of Technology reports.