Erschienen in:
08.12.2016 | Original Article
Serum bilirubin concentrations and incident coronary heart disease risk among patients with type 2 diabetes: the Dongfeng–Tongji cohort
verfasst von:
Jing Wang, Xiaofen Wu, Yaru Li, Xu Han, Hua Hu, Fei Wang, Caizheng Yu, Xiulou Li, Kun Yang, Jing Yuan, Ping Yao, Xiaoping Miao, Sheng Wei, Youjie Wang, Weihong Chen, Yuan Liang, Huan Guo, Handong Yang, Tangchun Wu, Xiaomin Zhang, Meian He
Erschienen in:
Acta Diabetologica
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Ausgabe 3/2017
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Abstract
Aims
Elevated serum bilirubin levels are associated with decreased coronary heart disease (CHD) risk in cross-sectional studies among diabetic patients, but prospective evidence is limited. We investigated the relationship of serum bilirubin levels with incident CHD risk among type 2 diabetes patients.
Methods
In a prospective study of 2918 type 2 diabetes embedded in the Dongfeng–Tongji cohort, serum total bilirubin (TBil), direct bilirubin (DBil), and indirect bilirubin (IBil) were measured at baseline. Cox proportional hazards models were used to examine the association between serum bilirubin levels and CHD risk.
Results
A total of 440 CHD cases were identified during 12,017 person-years of follow-up. Compared with extreme quartiles, the adjusted hazard ratio and 95% confidence interval of incident CHD were 0.74 (0.56–0.99) with P trend = 0.08 in IBil, while in TBil and DBil, the bilirubin–CHD associations were not significant. Moreover, serum TBil and IBil levels were interacted with drinking status on the risk of incident CHD (P interaction = 0.021 and 0.037, respectively), and the associations were evident in ever drinkers. In drinkers, when serum TBil or IBil concentrations increased 1 μmol/L, the CHD risk both decreased 6% (95% CIs 0.89–0.99 and 0.87–1.00, respectively).
Conclusions
Serum IBil levels were marginally related to decreased incident CHD risk among type 2 diabetes. Drinking could potentially enhance the associations of serum TBil and DBil levels with incident CHD risk.