Document Detail

Associations of polymorphism of P22(phox) C242T, plasma levels of vitamin E, and smoking with coronary heart disease in China.
MedLine Citation:
PMID:  17383305     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The C242T polymorphisms of P22(phox) and plasma vitamin E have been associated with the risk of coronary heart disease (CHD) in several studies, but the results have been inconsistent. In this study, we sought to examine potential interactions between P22(phox) genotypes, plasma vitamin E concentrations, and smoking in relation to CHD risk. METHODS: We determined C242T genotype frequency in the P22(phox) gene and plasma levels of vitamin E in 565 Chinese patients with CHD and 609 control subjects. Logistic regression was used to control for potential confounders in multivariate analyses. RESULTS: Compared with subjects with a CC genotype, subjects with a CT or TT genotype had a lower risk of CHD (multivariate-adjusted odds ratio [OR] 0.45, 95% CI 0.28-0.74, P = .001). Plasma concentrations of vitamin E were lower in case patients than in control subjects (multivariate-adjusted OR 0.65, 95% CI 0.50-0.86, P = .025). Compared with nonsmokers with a CC genotype, nonsmokers with a CT or TT genotype had a decreased risk of CHD (OR 0.25, 95% CI 0.12-0.53), but smokers with a CT or TT genotype had an increased risk (OR 2.04, 95% CI 0.74-5.61, P for interaction = .039). Smokers with a lower vitamin E concentration had a >3.0-fold greater risk of CHD than did nonsmokers with a higher vitamin E concentration (OR 3.52, 95% CI 2.36-5.24, P for interaction = .041). CONCLUSIONS: These data provide evidence that P22(phox) genotypes are significantly associated with CHD risk in a Chinese population and suggest potential interactions among smoking, P22(phox) genotypes, and vitamin E in relation to CHD risk.
Mei-An He; Long-Xian Cheng; Chang-Zheng Jiang; He-Song Zeng; Jing Wang; Feng Wang; Ying Chen; Miao Yang; Hao Tan; Hong-Yan Zheng; Frank B Hu; Tang-Chun Wu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American heart journal     Volume:  153     ISSN:  1097-6744     ISO Abbreviation:  Am. Heart J.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-03-26     Completed Date:  2007-05-03     Revised Date:  2007-07-03    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  640.e1-6     Citation Subset:  AIM; IM    
Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, Wuhan, Hubei, China.
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MeSH Terms
Case-Control Studies
Coronary Disease / blood*,  etiology,  genetics*
Middle Aged
NADPH Oxidase / genetics*
Polymorphism, Genetic*
Risk Factors
Smoking / adverse effects*
Vitamin E / blood*
Reg. No./Substance:
1406-18-4/Vitamin E; EC protein, human; EC Oxidase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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