Direct toxic action of beta-amyloid identified

Direct toxic action of beta-amyloid identified
Arthur Konnerth (left) and Benedikt Zott in front of the experimental setup. Credit: Andreas Heddergott / TUM

Hyperactive neurons in specific areas of the brain are believed to be an early perturbation in Alzheimer’s disease. For the first time, a team from the Technical University of Munich (TUM) was able to explain the reasons and mechanisms underlying this early and therefore important neuronal dysfunction. They found that the excitatory neurotransmitter glutamate persists for too long near active neurons. This causes a pathological overstimulation of those neurons—most likely contributing critically to impaired learning and memory loss in Alzheimer’s patients.

The brains of Alzheimer’s patients…

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