title: Association of genetic polymorphisms in ADH and ALDH2 with risk of coronary artery disease and myocardial infarction: a meta-analysis.
abstract: Alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) are the major enzymes responsible for alcohol metabolism in humans. Emerging evidences have shown that functional polymorphisms in ADH and ALDH genes might play a critical role in increasing coronary artery disease (CAD) and myocardial infarction (MI) risks; however, individually published studies showed inconclusive results. The aim of this meta-analysis is to evaluate the associations between the genetic polymorphisms of ADH and ALDH genes with susceptibility to CAD and MI. A literature search was conducted on PubMed, Embase, Web of Science and Chinese BioMedical databases from inception through December 1st, 2012. Crude relative risks (RRs) with 95% confidence intervals (CIs) were calculated. Twelve case-control studies were included with a total of 9616 subjects, including 2053 CAD patients, 1436 MI patients, and 6127 healthy controls. Meta-analysis showed that mutant genotypes (GA+AA) of the rs671 polymorphism in the ALDH2 gene were associated with increased risk of both CAD and MI (CAD: RR=1.20, 95%CI: 1.03-1.40, P=0.021; MI: RR=1.32, 95%CI: 1.11-1.57, P=0.002). However, there were no significant associations of ADH genetic polymorphisms to CAD and MI risks (CAD: RR=0.92, 95%CI: 0.73-1.15, P=0.445; MI: RR=0.93, 95%CI: 0.84-1.03, P=0.148). In conclusion, this meta-analysis provides strong evidence that ALDH2 rs671 polymorphism may be associated with increased risks of CAD and MI. However, further studies are still needed to accurately determine whether ADH genetic polymorphisms are associated with susceptibility to CAD and MI.
authors.affiliation: Department of Cardiovascular Surgery, General Hospital of Shenyang Military Region, Shenyang 110840, China.
authors.forename: Hongguang
authors.initials: H
authors.lastname: Han
authors.forename: Huishan
authors.initials: H
authors.lastname: Wang
authors.forename: Zongtao
authors.initials: Z
authors.lastname: Yin
authors.forename: Hui
authors.initials: H
authors.lastname: Jiang
authors.forename: Minhua
authors.initials: M
authors.lastname: Fang
authors.forename: Jingsong
authors.initials: J
authors.lastname: Han
mesh_terms: D000444:Aldehyde Dehydrogenase / Q000235:genetics*; D000071396:Aldehyde Dehydrogenase, Mitochondrial; D003324:Coronary Artery Disease / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006801:Humans; D009203:Myocardial Infarction / Q000235:genetics*; D009481:Neurophysins / Q000235:genetics*; D011110:Polymorphism, Genetic; D011498:Protein Precursors / Q000235:genetics*; D017594:Publication Bias; D012306:Risk; D014667:Vasopressins / Q000235:genetics*
chemical_list: C438657:AVP protein, human; D009481:Neurophysins; D011498:Protein Precursors; D014667:Vasopressins; C096127:ALDH2 protein, human; D000444:Aldehyde Dehydrogenase; D000071396:Aldehyde Dehydrogenase, Mitochondrial
keywords: 95% confidence interval; 95%CI; ADH; ALDH; Alcohol dehydrogenase; Aldehyde dehydrogenase; CAD; Coronary artery disease; HWE; Hardy–Weinberg equilibrium; MI; Meta-analysis; Myocardial infarction; RR; SNP; Single nucleotide polymorphism; alcohol dehydrogenase; aldehyde dehydrogenase; coronary artery disease; myocardial infarction; relative risk; single nucleotide polymorphisms