Fei Song, Anne Poljak, Michael Valenzuela, Richard Mayeux, George A. Smythe, Perminder S. Sachdev
Plasma amyloid-β (Aβ) levels have been proposed as biomarkers of Alzheimer’s disease (AD), but studies have produced inconsistent results. We present a meta-analytic review of cross-sectional studies that examined plasma Aβ levels in AD and cognitively normal subjects, and longitudinal studies that used baseline plasma Aβ levels to predict conversion from normal cognition to AD. Medline and EMBASE databases were searched to generate an initial list of relevant studies, and selected authors approached for addi…
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