摘要目的:研究广西某有色金属矿区血镉暴露与成年居民肝功能的相关性。方法:于2013—2014年，以广西某有色金属矿业污染区的5个重金属污染村作为研究现场，招募到310名符合标准的18岁及以上居民为研究对象。通过问卷调查、体格检查和实验室检测的方法，获取对象一般人口学特征、血镉水平及肝功能指标[总胆红素（TBIL）、谷草转氨酶（AST）、谷丙转氨酶（ALT）及γ-谷氨酰胺转移酶（GGT）]等信息。根据血镉水平四分位数，将研究对象分为 Q1~ Q4四组（以 Q1组为参照组），采用多因素非条件logistic回归模型分析各功能指标与血镉水平之间的关联。 结果:研究对象的年龄为（49.2±15.4）岁；男性为112名（36.1%）；血镉水平 G（95% CI）为3.72（3.43~4.02）μg/L；肝效应指标TBIL、AST、ALT及GGT的异常率分别为17.4%（54例）、19.7%（61例）、10.7%（33例）及11.9%（37例）。调整年龄、性别、BMI、吸烟、饮酒、总胆固醇血症、高甘油三酯血症等因素后，与血镉水平 Q1组对象相比， Q4组对象AST发生异常的风险较大[ OR（95% CI）值为2.92(1.07~7.98)]。 结论:该有色金属矿区血镉水平高于我国一般人群参考值；镉暴露与AST异常有关联。

abstractsObjective:To investigate the association of cadmium exposure with liver function among adults in a non-ferrous metal mining area in Guangxi.Methods:A total of 310 residents aged 18 and above were recruited from 5 heavy metals polluted villages in a non-ferrous metal mining area in Guangxi from 2013 to 2014. The general demographic characteristics, blood cadmium levels and indicators of liver function index [Total bilirubin (TBIL), Glutamic oxaloacetic transaminase (AST), Alanine transaminase (ALT) and Glutamine transaminase (GGT)] were obtained by using questionnaire, physical examination and laboratory test. The blood cadmium levels were divided into quartiles as Q1- Q4 groups (using Q1 group as the reference).Multivariate logistic regression model was used to analyze the correlation between the blood cadmium level and functional liver index. Results:The age of subjects was (49.2±15.4) years, and 112 (36.1%) subjects were male residents. The prevalence of abnormal rates of TBIL,AST,ALT and GGT were 17.4% (54), 19.7% (61), 10.7% (33) and 11.9% (37), respectively. The geometric mean value of cadmium levels in adults was 3.72(95% CI: 3.43-4.02) μg/L. After adjusting for age, gender, body mass index (BMI), smoking, drinking, total cholesterol, hypertriglyceridemia and other factors, the risk of abnormal AST index in the highest concentration of blood cadmium group ( Q4) was higher than that in the lowest concentration of blood cadmium group ( Q1) ( OR=2.92, 95%CI:1.07-7.98). Conclusion:The level of blood cadmium exposure is higher than the reference value of general population in China, and the elevated cadmium exposure is related to the increasing risk of AST abnormality.