Familial Alzheimer disease: Decreases in CSF A 42 levels precede cognitive decline

Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Neurology (Impact Factor: 8.3). 08/2005; 65(2):323-5. DOI: 10.1212/01.wnl.0000171397.32851.bc
Source: PubMed

ABSTRACT CSF amyloid beta-peptide 42 (A beta(42)) levels in presymptomatic subjects with pathogenic mutations in the PS1 gene are significantly lower than in an age-matched control group. Consequently, in these subjects, there is a window of opportunity estimated as at least 4 to 12 years to evaluate the ability of any putative prophylactic therapy to decrease, arrest, or reverse abnormalities in A beta(42) metabolism many years before clinical symptoms of Alzheimer disease are otherwise likely to occur.

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