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The Impact of E-waste Occupational Exposure on Male Reproductive Health

机译：电子废物职业暴露对男性生殖健康的影响

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Electrical and electronic waste (e-waste) contains multiple toxic materials. However, there is currently a lack of exposure data on workers in formal recycling plants. This study aims to observe the influence of electronic waste (e-waste) on male's reproductive health and to provide a theoretical foundation for improving the occupational safety. A survey and sample collections were performed based on 210 workers in e-waste recycling plant as the exposure group and 210 residents who worked at the same area but not exposed to e-waste (other jobs) as the control group. Semen sperm analysis and TUNEL assay were applied to detect the apoptotic rate and single comet assay to detect DNA damage. The survey results showed that infertility rate of e-waste recycling workers was significantly higher than that of non-occupationally exposed workers (P < 0.05); e-waste occupationally exposed workers showed markedly higher rate of prostatitis, urethritis, abortion and preterm birth of their spouses (P < 0.05). The percentage of sperm concentration, motile sperm, 'a' level sperm, 'a+b' level sperm and live sperm of the exposure group were higher than control group (P < 0.05). TUNEL assay revealed that the apoptotic rate of sperms in the exposure group was higher too (P < 0.05). Further, the sperm comet length, tail length, tail DNA %, Olive tail moment were significantly different between the two groups (P < 0.05). In general, we concluded that occupational exposure to e-waste led to asthenospermia and increased male infertility. Occupational exposure to e-waste increased the sperm apoptosis rate and sperm DNA damage.
机译：电气和电子废物（电子废物）包含多种有毒物质。但是，目前缺乏正规回收工厂工人的接触数据。这项研究旨在观察电子废物（电子废物）对男性生殖健康的影响，并为提高职业安全性提供理论基础。对电子废物回收工厂的210名工人作为暴露组和210名在同一地区工作但未暴露于电子废物（其他工作）的居民作为对照组，进行了调查和样品收集。精子分析和TUNEL法检测细胞凋亡率，单彗星法检测DNA损伤。调查结果显示，电子垃圾回收工作者的不孕率明显高于非职业暴露的工人（P <0.05）;电子废物职业暴露工人的配偶前列腺炎，尿道炎，流产和早产的发生率显着更高（P <0.05）。暴露组的精子浓度，活动精子，“ a”级精子，“ a + b”级精子和活精子的百分比均高于对照组（P <0.05）。 TUNEL法检测显示，暴露组精子的凋亡率也较高（P <0.05）。此外，两组之间的精子彗星长度，尾巴长度，尾巴DNA％，Olive尾矩显着不同（P <0.05）。总的来说，我们得出的结论是，职业性接触电子垃圾会导致弱精子症和男性不育症增加。职业暴露于电子废物中会增加精子凋亡率和精子DNA损伤。

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