Longevity & Aging

Brain Hyperglycosylation Identified as a Key Hallmark of Alzheimer's Disease

Researchers studying Alzheimer's disease have identified a striking increase in glycosylation — a process where sugar chains attach to proteins — in brain tissue from Alzheimer's patients. Using advanced molecular scanning techniques on human brain samples and mouse models, scientists found that glycan levels were significantly elevated across memory and cognitive brain regions. This hyperglycosylation appeared to result from increased production rather than reduced breakdown. Crucially, when researchers experimentally reduced these sugar modifications in Alzheimer's mouse models, the animals showed improved social memory. The findings suggest that excessive glycosylation may actively drive neurodegeneration, not merely result from it, opening a potential new therapeutic target for Alzheimer's disease.