Abstract:
OBJECTIVES:To determine the relationship between apolipoprotein E (APOE) epsilon4 and Alzheimer's disease (AD) in the Mexican Mestizo population, as well as its effects on the cognitive profile of AD and elderly Mestizos without dementia. DESIGN:Cross-sectional analysis of a cohort study. SETTING:Evaluations were conducted at the geriatrics clinic of an academic medical hospital in Mexico City. PARTICIPANTS:Forty-nine elderly subjects with AD and 141 controls selected from a representative sample of Mexican Mestizos aged 65 to 96 who participated in the Prevalence Survey of Dementia in the Mexico City Elderly Population cohort. MEASUREMENTS:All subjects underwent APOE genotypification and a comprehensive clinical and neuropsychological evaluation. RESULTS:There were no significant differences in epsilon3 and epsilon4 frequencies between the subjects with and without AD and a tendency toward higher epsilon4 and lower epsilon3 allele frequencies in subjects aged 75 and older. No association was found between APOE epsilon4 and the presence of AD. The age-, sex-, and education-adjusted risk for AD associated with at least one epsilon4 allele was 1.01 (95% confidence interval=0.45-2.23). Performance on a long-term visual memory test was significantly worse in APOE epsilon4 carriers than in APOE epsilon3 carriers only in the group with AD. CONCLUSION:APOE epsilon4 did not increase the risk for AD in this Mexican Mestizo elderly urban population sample, although the presence of this allele seems to modify its clinical expression.
journal_name
J Am Geriatr Socjournal_title
Journal of the American Geriatrics Societyauthors
Villalpando-Berumen JM,Mejia-Arango S,Aguilar-Salinas CA,Ordonez-Sanchez ML,Gutierrez-Robledo LMdoi
10.1111/j.1532-5415.2007.01606.xsubject
Has Abstractpub_date
2008-04-01 00:00:00pages
677-82issue
4eissn
0002-8614issn
1532-5415pii
JGS1606journal_volume
56pub_type
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