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flag A yaks' gene mutation boosts a vitamin A byproduct that repairs brain myelin, offering potential treatments for MS and similar diseases.

flag A genetic mutation in yaks and other high-altitude animals, found in the Retsat gene, boosts levels of a vitamin A metabolite called ATDR, which enhances the production and maturation of oligodendrocytes—cells that create and repair the myelin sheath around nerve fibers. flag In mouse studies, this mutation improved brain function under low-oxygen conditions, accelerated myelin regeneration after injury, and reduced symptoms in models of multiple sclerosis. flag Since ATDR is naturally present in humans, the findings suggest a promising new therapy for myelin-related diseases like MS, cerebral palsy, and vascular dementia by stimulating the body’s own repair mechanisms rather than suppressing the immune system.

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