Hippocampal Atrophy and Apolipoprotein E Genotype Are Independently Associated with Alzheimer's Disease

Overview

Journal Ann Neurol

Specialty Neurology

Date 1998 Mar 20

PMID 9506546

Citations 61

Authors

C R Jack Jr

R C Petersen

Y C Xu

P C OBrien

S C Waring

E G Tangalos

G E Smith

R J Ivnik

S N Thibodeau

E Kokmen

Affiliations

Soon will be listed here.

Abstract

A variety of anatomic and functional neuroimaging findings are associated with Alzheimer's disease (AD). One of the strongest imaging associations identified is between AD and hippocampal atrophy. The epsilon4 allele of the apolipoprotein E (ApoE) gene increases the risk of developing AD and lowers the mean age of onset of the disease. The purpose of this study was to assess the association between hippocampal volume and ApoE polymorphisms in elderly control subjects and in patients with probable AD. We performed magnetic resonance imaging-based volume measurements of the hippocampus in 125 cognitively normal elderly controls and 62 patients with probable AD. ApoE genotyping was performed by using standard methods. Hippocampal volumes were significantly smaller in AD cases than in control subjects. Hippocampal volumes did not differ significantly within either clinical group on the basis of ApoE genotype. Both the epsilon4 allele of ApoE and hippocampal atrophy were significantly but independently associated with AD.

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