Tau Protein Accumulation Identified as Alzheimer's Driver

Current neuroscience models of Alzheimer's disease identify the accumulation of beta amyloid proteins as a primary driver of neuron dysfunction and brain shrinkage. Researchers are specifically examining the role of the tau protein, which is located inside neurons and is essential for maintaining cellular structure. The clumping of these proteins leads to the eventual death of neurons and subsequent memory loss in patients. When tau protein malfunctions, neurons eventually stop functioning and die, leading to brain shrinkage and memory loss. Research indicates that tau protein clumps outside of cells act as a primary driver of Alzheimer's disease. This accumulation triggers a domino effect known as the amyloid cascade hypothesis. Current drug development efforts focus on preventing this accumulation or clearing the protein from the brain. Researcher Shrag is challenging the amyloid cascade hypothesis by focusing on the connections between Alzheimer's and blood vessel diseases.