Document Detail

Glutathione S-transferase T1- and M1-null genotypes and coronary artery disease risk in patients with Type 2 diabetes mellitus.
MedLine Citation:
PMID:  19102712     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Since long-term exposure to oxidative stress is strongly implicated in the pathogenesis of diabetic complications, polymorphic genes of detoxifying enzymes must be involved in the development of coronary artery disease (CAD). We assessed the potential glutathione S-transferase (GST) gene-gene (GSTM1(null)-GSTT1(null)) and gene-smoking interactions on the development of CAD in patients with Type 2 diabetes. MATERIALS & METHODS: In a case-only design, we enrolled 231 patients with Type 2 diabetes (147 male, 66.1 +/- 9.7 years) referred to our institute for coronary angiography investigation. CAD was diagnosed if there was over 50% obstruction of one or more major vessels. RESULTS: Coronary angiography revealed significant CAD in 184 patients (80%). Male gender (p < 0.001), smoking habits (p = 0.003) and GSTT1(null) genotype (p = 0.003) were significantly correlated with the increasing extent of the coronary atherosclerosis. Case-only analysis revealed that patients with both M(null)-T(null) genotypes had the highest risk for 3-vessel CAD compared with patients who express both GST genes (odds ratio: 3.1; 95% confidence interval: 1.0-10.3, p = 0.04). A nearly threefold interaction existed between cigarette smoking and M(null)-T(null) genotypes (odds ratio: 2.9, 95% confidence interval: 1.7-7.8, p = 0.03). A significant interaction between M(null)-T(null) genotypes and smoking was also observed on the increasing number of coronary vessels that were diseased (chi(2) = 14.0; p = 0.03). CONCLUSION: These data suggest that polymorphisms in GSTM1 and GSTT1 genes are risk factors for CAD in Type 2 diabetic patients, especially among smokers. These genetic markers may permit the targeting of preventive and early intervention on high-risk patients to reduce their cardiovascular risk.
Samantha Manfredi; Debora Calvi; Martina del Fiandra; Nicoletta Botto; Andrea Biagini; Maria Grazia Andreassi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pharmacogenomics     Volume:  10     ISSN:  1744-8042     ISO Abbreviation:  Pharmacogenomics     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2008-12-23     Completed Date:  2009-03-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100897350     Medline TA:  Pharmacogenomics     Country:  England    
Other Details:
Languages:  eng     Pagination:  29-34     Citation Subset:  IM    
National Research Council, Institute of Clinical Physiology, G Pasquinucci Hospital, Via Aurelia Sud-Montepepe, 54100 Massa, Italy.
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MeSH Terms
Coronary Artery Disease / enzymology,  etiology,  genetics*
Diabetes Mellitus, Type 2 / complications*,  enzymology,  genetics
Glutathione Transferase / genetics*
Polymorphism, Genetic*
Sex Factors
Smoking / adverse effects,  genetics
Reg. No./Substance:
EC 2.5.1.-/glutathione S-transferase T1; EC Transferase; EC S-transferase M1

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