title: Study of the association between Alzheimer's disease and angiotensin-converting enzyme gene polymorphism using DNA from lymphocytes.
abstract: Angiotensin-converting enzyme (ACE) may play a role in cognition and memory. A recent study found that a 287-bp insertion/deletion (I/D) polymorphism of the ACE gene is associated with susceptibility to Alzheimer's disease (AD). However, this finding has not been replicated by all studies. These discrepancies may be due to the difference in ethnic background. Therefore, we investigated the possibility of such an association in 173 AD patients and 286 normal controls from a Chinese population. We found that there is an increased frequency of the ACE I allele in AD patients and the odds ratio for bearers of the I allele was 2.88. Our findings further support previous reports of an association between ACE polymorphism and AD. The implication of the ACE I/D polymorphism in the pathogenesis of AD warrants further exploration.
authors.affiliation: Department of Psychiatry, Veterans General Hospital-Taipei, Taipei, Taiwan, ROC.
authors.forename: Chih-Ya
authors.initials: CY
authors.lastname: Cheng
authors.forename: Chen-Jee
authors.initials: CJ
authors.lastname: Hong
authors.forename: Hsiu-Chih
authors.initials: HC
authors.lastname: Liu
authors.forename: Tsung-Yun
authors.initials: TY
authors.lastname: Liu
authors.forename: Shih-Jen
authors.initials: SJ
authors.lastname: Tsai
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D000544:Alzheimer Disease / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D004247:DNA / Q000235:genetics / Q000378:metabolism; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008214:Lymphocytes / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic; D012016:Reference Values
chemical_list: D004247:DNA; D007703:Peptidyl-Dipeptidase A