Article
Age and apolipoprotein E*4 allele effects on cerebrospinal fluid beta-amyloid 42 in adults with normal cognition.
Archives of neurology - 1 Jul 2006
Peskind Elaine R, Li Ge, Shofer Jane, Quinn Joseph F, Kaye Jeffrey A, Clark Chris M, Farlow Martin R, DeCarli Charles, Raskind Murray A, Schellenberg Gerard D, Lee Virginia M-Y, Galasko Douglas R
Abstract excerpt
BACKGROUND: Decreased cerebrospinal fluid (CSF) beta-amyloid 42 (A beta 42) concentration, but not A beta 40 concentration, is a biomarker for Alzheimer disease. This A beta 42 concentration decrease in CSF likely reflects precipitation of A beta 42 in amyloid plaques in brain parenchyma. This pathogenic plaque deposition begins years before the clinical expression of dementia in Alzheimer disease. Normal aging...
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