Department of Biology, University of Ottawa, Ontario K1N 6N5, Canada.
Environ Int. 2017 Apr;101:183-189. doi: 10.1016/j.envint.2017.02.002. Epub 2017 Feb 13.
Type 2 diabetes is a chronic metabolic disease that is of increasing concern in Inuit communities. Behavioural factors such as physical inactivity and poor diet are well-known risk factors. Exposure to persistent organic pollutants (POPs) has emerged as an additional factor in the pathogenesis of diabetes. In this study, association between polychlorinated biphenyls (PCBs) and p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) with diabetes in Canadian Inuit was examined. Data from the Adult Inuit Health Survey (2007-2008) of Inuit participants from the Canadian Arctic were analyzed. Self-reported diabetes (excluding gestational diabetes) and clinical measurement of fasting glucose were examined as outcomes. Association with individual PCB congeners, sum of dioxin-like PCBs (∑DL-PCB), non-dioxin-like PCBs (∑NDL-PCB), total PCBs (∑PCB), and p,p'-DDE were investigated using multiple regression models adjusted for confounding factors. Using different methods to incorporate serum lipids, highest vs. lowest quartile exposures to PCB-105, PCB-118, PCB-153, PCB-156, PCB-170, PCB-180, PCB-183, ∑PCB, and p,p'-DDE were associated with increased risk of diabetes. For these PCBs, odds ratios (ORs) ranged from 1.9-3.5 (lower 95% CI: 0.8-1.4, upper 95% CI: 4.4-9.0) and for p,p'-DDE the OR was 2.5 (lower 95% CI: 1.1-1.2, upper 95% CI: 5.9-6.0). The highest vs. lowest quartile exposure to most PCBs and p,p'-DDE were associated with an increase of fasting glucose by 3-7%. PCBs and p,p'-DDE were associated with increased risk of diabetes and higher fasting glucose level in a cross-sectional survey of Canadian Inuit. Cause-effect relationships of PCBs and p,p'-DDE with diabetes and diabetes-related outcomes need to be further investigated in a cohort study.
2 型糖尿病是一种慢性代谢性疾病,在因纽特社区中越来越受到关注。身体活动不足和不良饮食等行为因素是众所周知的风险因素。接触持久性有机污染物(POPs)已成为糖尿病发病机制中的另一个因素。在这项研究中,研究了多氯联苯(PCBs)和 p,p'-二氯二苯二氯乙烯(p,p'-DDE)与加拿大因纽特人糖尿病之间的关系。分析了来自加拿大北极因纽特人的成人因纽特人健康调查(2007-2008 年)的数据。将自我报告的糖尿病(不包括妊娠糖尿病)和空腹血糖的临床测量作为结果进行了检查。使用多元回归模型,针对混杂因素进行了调整,研究了与个体 PCB 同系物、二恶英类 PCB 总和(∑DL-PCB)、非二恶英类 PCB 总和(∑NDL-PCB)、总 PCB(∑PCB)和 p,p'-DDE 的关联。使用不同的方法纳入血清脂质,最高与最低四分位的 PCB-105、PCB-118、PCB-153、PCB-156、PCB-170、PCB-180、PCB-183、∑PCB 和 p,p'-DDE 暴露与糖尿病风险增加相关。对于这些 PCB,比值比(OR)范围为 1.9-3.5(下 95%CI:0.8-1.4,上 95%CI:4.4-9.0),而对于 p,p'-DDE,OR 为 2.5(下 95%CI:1.1-1.2,上 95%CI:5.9-6.0)。与最高四分位相比,大多数 PCB 和 p,p'-DDE 的最低四分位暴露与空腹血糖升高 3-7%有关。在加拿大因纽特人的横断面调查中,PCBs 和 p,p'-DDE 与糖尿病和空腹血糖水平升高有关。在队列研究中需要进一步研究 PCBs 和 p,p'-DDE 与糖尿病及其相关结果之间的因果关系。