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Diabet Med. 2014 Apr;31(4):455-61. doi: 10.1111/dme.12315. Epub 2013 Oct 9.

Clinical association between serum γ-glutamyltransferase levels and the development of insulin resistance in Korean men: a 5-year follow-up study.

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  • 1Department of Preventive Medicine, School of Medicine, Kyung Hee University.

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.

© 2013 The Authors. Diabetic Medicine © 2013 Diabetes UK.

PMID:
24102943
[PubMed - indexed for MEDLINE]
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