Exposure to polycyclic aromatic hydrocarbons and central obesity enhanced risk for diabetes among individuals with
Jian Hou1, Huizhen Sun1, Xiji Huang1
1Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan 430030, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan 430030, Hubei, PR China.
Abstract:
Some studies have shown an association between obesity or exposure to polycyclic aromatic hydrocarbons (PAHs) and the risk of diabetes. This study aimed to investigate the interaction of obesity and urinary monohydroxy-PAHs (OH-PAHs) on diabetes. Individuals (n = 2716) were drawn from the baseline survey of the Wuhan-Zhuhai Cohort Study. They completed the physical examination, measurements of lung function, biochemical indices and urinary OH-PAHs levels. Additive effect of obesity and urinary ΣOH-PAHs levels on diabetes was assessed by calculating the relative excess risk due to interaction (RERI) and the attributable proportion (AP) due to interaction. Several urinary OH-PAHs were positively associated with diabetes in individuals with central obesity or normal weight (p < 0.05 for all). Among individuals with poor lung function, the RERI between urinary ΣOH-PAHs and waist circumstance (WC, RERI: 0.866, 95% CI: -0.431, 2.164, p = 0.192) or waist-to-height ratio (WHtR, RERI: 1.091, 95% CI: -0.124, 2.305, p = 0.078) was found; the AP due to the interaction between urinary ΣOH-PAHs and WC or WHtR was 0.383 (95% CI: -0.07, 0.80, p = 0.086) or 0.465 (95% CI: 0.019, 0.912, p = 0.04). The results indicated that central obesity may enhance the effect of exposure to background PAHs on diabetes in individuals with poor lung function.
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