期刊
DIABETES RESEARCH AND CLINICAL PRACTICE
卷 81, 期 3, 页码 381-385出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.diabres.2008.06.003
关键词
manganese superoxide dismutase; single nucleotide polymorphism; diabetes mellitus
Aims: Recent evidence indicates that oxidative stress may play an important role in the pathogenesis of insulin resistance and that gene polymorphism. (Ala16Val) of manganese superoxide dismutase (MnSOD) may protect against reactive oxygen species (ROS) function. We aimed to test the hypothesis that the Ala16VaI variant could be associated with the development of type 2 diabetes. Methods: We examined 523 nondiabetic Japanese-Americans who underwent a 75 g oral glucose tolerance test (OGTT) and were followed for an average of 9.9 years. Cox proportional hazard analysis, stratified by category of OGTT, was used to determine whether the Ala16Va1 polymorphism was a risk factor in the development of type 2 diabetes. Results: During the follow-up period, 65 subjects developed type 2 diabetes. Compared with Ala allele carriers, subjects with a Val homozygote showed significantly higher risk for developing diabetes (stratified hazard ratio = 2.05 [95% confidence interval 1.03-4.08]; P = 0.041) after adjustment for age, gender, systolic blood pressure, total cholesterol, body mass index, and homeostasis model assessment. Conclusions: We demonstrated that the MnSOD Ala16Val polymorphism might be associated with development of type 2 diabetes among Japanese-Americans. These results suggest that insufficient ROS scavenging might be associated with a susceptibility to glucose intolerance. (C) 2008 Elsevier Ireland Ltd. All rights reserved.
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