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- Title
Clinical association between serum γ-glutamyltransferase levels and the development of insulin resistance in Korean men: a 5-year follow-up study.
- Authors
Ryoo, J.‐H.; Oh, C.‐M.; Kim, H. S.; Park, S. K.; Choi, J.‐M.
- Abstract
Aims In recent years, γ-glutamyltransferase has emerged as a predictor of cardiovascular disease, Type 2 diabetes mellitus, the metabolic syndrome and hypertension. However, it is not yet certain whether γ-glutamyltransferase is a predictor for insulin resistance. The aim of this study was to examine the longitudinal association between baseline γ-glutamyltransferase level and the development of insulin resistance in Korean men. Methods We performed a prospective cohort study, involving 22 931 healthy Korean men without baseline insulin resistance (homeostasis model assessment of insulin resistance, HOMA-IR < 2.7) for 5 years. We checked the HOMA-IR serially to monitor the development of insulin resistance (incidence of HOMA-IR ≥ 2.7). A Cox proportional hazards model was used to determine hazard ratios for insulin resistance by quartile groups of baseline serum γ-glutamyltransferase levels. Results During 81 208.6 person-years of follow-up, 3856 (16.8%) cases of insulin resistance developed between 2006 and 2010. After adjusting for multiple covariates, including baseline HOMA-IR, the hazard ratios (95% CI) for incident insulin resistance comparing the second to the fourth quartile of baseline serum γ-glutamyltransferase levels with the first quartile were 1.19 (1.06-1.33), 1.38 (1.23-1.53) and 1.58 (1.41-1.77), respectively ( P for trend < 0.001). Conclusions Our findings show that serum γ-glutamyltransferase level could be a predictor of the development of insulin resistance in Korean men.
- Subjects
KOREA; HEART disease risk factors; CARDIOVASCULAR disease diagnosis; HYPERTENSION; TYPE 2 diabetes diagnosis; METABOLIC syndrome diagnosis; TYPE 2 diabetes complications; ANALYSIS of variance; ASPARTATE aminotransferase; BLOOD pressure measurement; CHI-squared test; CONFIDENCE intervals; CREATININE; DIABETES; HOMEOSTASIS; PATIENT aftercare; INSULIN; INSULIN resistance; LIPOPROTEINS; LIVER function tests; LONGITUDINAL method; TRIGLYCERIDES; DATA analysis; ALANINE aminotransferase; BODY mass index; PROPORTIONAL hazards models; GAMMA-glutamyltransferase
- Publication
Diabetic Medicine, 2014, Vol 31, Issue 4, p455
- ISSN
0742-3071
- Publication type
Article
- DOI
10.1111/dme.12315