Alzheimer‘s disease (AD) is a
progressive neurodegenerative disorder, encircling the deterioration of cognitive functions and behavioral changes, characterized by the aggregation of
amyloid β-protein (Aβ) into fibrillar amyloid plaques in elected areas of the brain
with the lipid-carrier protein apolipoprotein E (apoE), the microtubule
associated protein tau, and the presynaptic protein α-synuclein.
High levels of
fibrillary Aβ, the main constituent of senile plaques, are deposited in the AD
brain that outcome in the thrashing of synapses, neurons and destruction of neuronal role. Aβ is derived from the amyloid precursor protein through
sequential protein cleavage by aspartyl protease, β-secretase and
presenilin-dependent β-secretase triggering a spill of events such as oxidative
damage, neurotoxicity, and inflammation that contributes to the progression of
AD. Therefore the Aβ protein may be a target for anti-Alzheimer drugs.
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