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The down-regulation of protein phosphatase 2A (PP2A) activity is thought to play an important role in the formation of tau hyperphosphorylation in the Alzheimer's disease (AD) brain. Methylation of the PP2A catalytic subunit at the L309 site can potently activate PP2A for some substrates via the increasing recruitment of its regulatory subunits into the holoenzyme. Aβ is overproduced yet estrogen...
Alzheimer's disease (AD) is characterized neuropathologically by neuritic plaques (NPs), and neurofibrillary tangles (NFTs). So far, the following key issues are not yet answered to the disease: (1) the accumulation degrees of three Aβ variants, and tau phosphorylation epitopes in AD as compared to control; (2) the correlation degrees of levels of three Aβ variants with different tau phosphorylation...
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