Concentrations of amyloid beta protein in cerebrospinal fluid of patients with Alzheimer's disease.

van Gool, W A; Kuiper, M A; Walstra, G J; Wolters, E C; Bolhuis, P A · Ann Neurol · 1995

case_control · Level III

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Abstract

Deposition of fibrillar amyloid beta protein (A beta) is increased in brains of patients with Alzheimer's disease. Concentrations of A beta were measured in cerebrospinal fluid with an enzyme-linked immunosorbent assay in 10 neurological patients free from neurodegenerative disease, 28 patients with Parkinson's disease, and 18 patients with probable Alzheimer's disease. Levels of A beta in cerebrospinal fluid were not significantly different among these groups. This observation suggests that concentrations of soluble A beta in cerebrospinal fluid as measured in this study do not reflect the amount of fibrillar, aggregated A beta in the brain of patients with Alzheimer's disease.

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