Alzeimer's Disease Over a century ago a german doctor, Alois Alzeimer spotted anamolies in brain section of patient with dementia. Ever since people have been studying the plaques and tangles that he saw in the hope that one day we could understand and cure what is now known as the Alzeimer's Disease (AD) which is most common Neurodegenerative disease. Plaques are insoluble peptide called Amyloid beta (A-beta) which are formed when Amyloid Precursor Protein are cleaved by certain enzymes. Abeta is considered as the main culprit for AD. Abeta tends to misfold and sticky eventually clumping together to form oligomers. Some of which aggregate into large insoluble fibrils that deposit in the brain as plaques. Oligomers can be toxic, research shows they can weaken communication and plasticity at synapse. This could be what stops brain from forming or retrieving memories. Neuron's aren't the only cells affected in AD, astrocytes and microglia also play a role. Microglia ar...
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