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Deposition of amyloid beta (Aβ) into extracellular plaques is a pathologic characteristic of Alzheimer’s disease. Plasmin, neprilysin, endothelin-converting enzyme and insulin-degrading enzyme (IDE) have each been implicated in Aβ degradation; data supporting the role of the latter three enzymes have included increased levels of endogenous murine Aβ in mice genetically deficient for the respective...
A rabbit antiserum to the C-terminus of the putative brain amyloid precursor was used to probe Western blots of tissue proteins separated by SDS-PAGE. The antiserum specifically labelled a protein of approx. 70 kDa in the Tris buffer-soluble fraction of brain samples from rat, Alzheimer subjects, cases of young and old Down's syndrome, and age-matched controls. The 70 kDa protein was present in low...
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