Plasma Levels of amyloid β proteins Aβ1–40 and Aβ1–42(43) are elevated in Down's syndrome

Abstract excerpt

To investigate the effect of the overexpression of beta-amyloid precursor protein (APP) on the production of two major amyloid beta protein (Abeta) species, Abeta40 and Abeta42(43), we measured amounts of Abeta1-40 and Abeta1-42(43) in the plasma from 44 patients with Down's syndrome (DS) (age, 19-61 years) and 66 age-matched normal controls using enzyme-linked immunosorbent assays. Plasma concentrations of both...

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