title: Apolipoprotein e gene polymorphism in Iranian coronary atherosclerosis patients candidate for coronary artery bypass graft.
abstract: Objective(s) : Apolipoprotein E genotype (APOE) polymorphism affects lipid levels and coronary artery disease (CAD) risk. The aim of this study was to study the association of the Apolipoprotein E genotypes with coronary artery disease in the Iranian population.
  
  
  METHODS
  The Apolipoprotein E genotype in DNA samples extracted from 66 CAD+ patients and 61 control subjects by restricting enzyme digestion of amplified exon 4 APOE gene was determined. Results : The ε3 allele was found at similar frequency in control subjects (88.5%) and atherosclerosis patients (83.3%) (P=0.314). Our results showed that the frequency of the ɛ3/ɛ3 and ε3/ε4 genotypes increased in three-vessel-disease patients and the frequency of ɛ2/ɛ2 genotype increased in one-vessel-disease patients. Conclusion : ɛ3/ɛ3 and ɛ3/ɛ4 genotypes are suggested to be predisposing factors, which, in combination with environmental factors, may trigger the degree of luminal narrowing. The possible mechanisms remain elusive and require further studies.
authors.affiliation: Department of Biology, Science School, Yazd University, Yazd, Iran.
authors.forename: Mohammad Mehdi
authors.initials: MM
authors.lastname: Heidari
authors.forename: Seyed Khalil
authors.initials: SK
authors.lastname: Foruzannia
authors.forename: Mehri
authors.initials: M
authors.lastname: Khatami
authors.forename: Mehdi
authors.initials: M
authors.lastname: Hadadzadeh
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Emami Meybodi
keywords: Apolipoprotein E; Coronary Atherosclerosis; Polymorphism; Restriction Isotyping