电子垃圾拆解区居民血清中甲状腺激素和性激素水平研究

Study on the Levels of Thyroid Hormones and Sexual Hormones in Serum of the Residents in an e-Waste Dismantling Region

目的探讨电子垃圾拆解区居民血清中甲状腺激素和性激素水平的变化。方法于2005年8—12月在我国南方某有10余年历史的电子垃圾拆解区(暴露组)及距该地区约50km无明显工业污染的农业区(对照组)分别随机选取当地居民58名和80名。用免疫化学发光分析(immunochemiluminometric assay,ICMA)法检测两组居民血清甲状腺激素[包括游离三碘甲状腺原氨酸(free triiodothyronine,FT3)、游离四碘甲状腺原氨酸(free thyroxine,FT4)、促甲状腺激素(thyroidstimulating hormone,TSH)]和性激素[包括雌二醇(estradiol,E2)、孕酮(progesterone,Pro)、睾酮(testerone,T)]水平,并分析其影响因素。结果暴露组血清中FT4水平低于对照组(P<0.05);但TSH水平高于对照组(P<0.05)。男性居民中,暴露组血清中E2和T均低于对照组(P<0.05);在女性中,暴露组血清中Pro水平高于对照组(P<0.05)。电子垃圾拆解职业暴露史是TSH水平升高的危险因素(OR=3.88,P<0.01);性别(OR=0.39,P<0.05)和电子设备拥有情况(OR=0.33,P<0.05)是FT3水平降低的保护因素。结论电子垃圾处理环境暴露可能对当地居民血清中甲状腺激素和性激素水平有影响。

Objective To explore the levels of thyroid hormones and sexual hormones in serum of residents in an e-waste dismantling region. Methods The levels of thyroid hormones ,including free triiodothyronine （FT3）,free thyroxine （FT4）,thyroid stimulating hormone （TSH） and sexual hormones,including estradiol （E2） and progesterone（Pro）,testerone （T） among the subjects in the exposed group （n=58） in an e-waste dismantling region and the control group （n=80） 50 km far from the e-waste dismantling region were detected by immuno-chemiluminometric assay in 2005. The factors relating to levels of these hormones were further analyzed. Results The FT4 levels in serum of the residents in the exposed group were significantly lower than those in the control group（P〈0.01）. However,the increased TSH levels in serum of the residents in the exposed group revealed statistically significance compared with those in the control group （P〈0.01）. The levels of E2 and T among the male residents in the exposed group were significant lower than those in the control group（P〈0.05）. By contrary,the Pro levels in female residents from the exposed group were significant higher compared with the control group （P〈0.05）. In addition,the factors that may affect serum TSH level were found ,the history of working with e-waste may be a risk factor （OR=3.88,P〈0.01）. Both gender（OR=0.39,P〈0.05）and possession status of electronic goods（OR=0.33,P〈0.05）may be protective factors to serum FT3 levels. Conclusions The findings suggest that some environmental pollutants existing in e-waste dismantling region may affect local residents’ health,representing changes in sera levels of thyroid hormones and sexual hormones.