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Clinical Chemistry 53: 71-77, 2007. First published November 16, 2006; 10.1373/clinchem.2006.078980
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Right arrow Lipids, Lipoproteins, and Cardiovascular Risk Factors
(Clinical Chemistry. 2007;53:71-77.)
© 2007 American Association for Clinical Chemistry, Inc.

Lipids, Lipoproteins, and Cardiovascular Risk Factors

{gamma}-Glutamyltransferase as a Predictor of Chronic Kidney Disease in Nonhypertensive and Nondiabetic Korean Men

Seungho Ryu1,a, Yoosoo Chang2, Dong-Il Kim1, Won Sool Kim1 and Byung-Seong Suh1

1 Department of Occupational Medicine and 2 Health Screening Center, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine. Seoul, Korea.

aAddress correspondence to this author at: Kangbuk Samsung Hospital, 108 Pyung dong, Jongro-Gu, Seoul, Korea 110-746. Fax 82-2-2001-2626; e-mail sh703.yoo{at}samsung.com.

Background: Little research has been done to examine whether {gamma}-glutamyltransferase (GGT) is prospectively associated with the development of chronic kidney disease (CKD). We performed a prospective study to examine the association between GGT and the risk for the development of CKD.

Methods: The study cohort included a total of 10 337 healthy males with normal baseline kidney functions and no proteinuria. Participants were workers in a semiconductor manufacturing company and its 13 affiliates. CKD was defined as either the presence of proteinuria or a glomerular filtration rate (GFR) of <60 mL · min–1 · (1.732)–1. Cox proportional hazards models were used to calculate the adjusted hazard ratios in separate models for CKD.

Results: During a follow-up period of 25 774.4 person-years, 366 men developed CKD. After adjustments were made for age, baseline GFR, triglyceride, and HDL-C, the risk for CKD increased with an increasing quartile of serum GGT (p for trend <0.001). The top one fourth of serum GGT vs the bottom one fourth of relative risks for CKD was 1.90 (95% confidence interval, 1.37–2.63). These associations were also apparent in participants who consumed ≤20 g/day of alcohol and those with normal weight, with values of alanine aminotransferase within reference intervals, or with C-reactive protein <3.0 mg/L, and participants without metabolic syndrome.

Conclusions: Our findings, which were obtained from a large work-site cohort and excluded individuals with diabetes and hypertension, indicated that serum GGT may be an early predictor for the development of CKD, independent of baseline confounding factors.




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