Protein linked to Alzheimer’s, strokes cleared from brain blood vessels

Washington University School of Medicine in St. Louis • February 17, 2021June 28, 2022

Amyloid deposits (blue) in mouse brain tissue and blood vessels are reduced after treatment with an antibody that targets the protein APOE (right), a minor component of amyloid deposits, compared to a placebo antibody (left). Amyloid deposits in the brain increase the risk of dementia and strokes. Researchers at Washington University School of Medicine in St. Louis have identified an antibody that clears amyloid deposits from the brain without raising the risk of brain bleeds.

As people age, a normal brain protein known as amyloid beta often starts to collect into harmful amyloid plaques in the brain. Such plaques can be the first step on the path to Alzheimer’s dementia. When they form around blood vessels in the brain, a condition known as cerebral amyloid angiopathy, the plaques also raise the risk of strokes.