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在精子成熟期间偶尔暴露于树烟雾会损害长埃文斯大鼠的精子流动性

Gary R Klinefelter¹, Janice A Dye¹, Lillian F Strader¹

¹Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, Durham, North Carolina 27711, United States.

Environmental science & technology

|July 14, 2025

概括

野火中的烟雾暴露可能会损害男性的生育能力. 在老鼠的精子成熟过程中暴露于树烟雾会降低精子的运动性,这表明挥发性化合物会损害生殖健康.

科学领域:

环境健康环境健康
生殖毒理学生殖毒理学
毒理学毒理学毒理学

背景情况:

流行病学研究表明,消防,野火烟雾暴露和男性不孕症之间存在联系.
了解烟雾引起的生殖损害的具体机制至关重要.

研究的目的:

调查急性白树烟雾暴露对雄性大鼠的精子运动性和动力学的影响.
为了确定烟雾中的颗粒物或挥发性成分是否对观察到的效应负责.

主要方法:

雄性长埃文斯大鼠 (12周大) 在10天内7天 (1小时/天) 暴露于不同度的香香烟 (3.5223.7 mg/m3).
一个子组在最低度下暴露于过烟雾 (无颗粒) 中.
精子运动性和动力学 (例如,VAP,VSL,ALH) 在暴露后大约24小时被评估.

主要成果:

暴露于整个白树烟雾 (11 mg/m3) 显著降低了逐渐的精子运动性和平均路径速度 (VAP).
从最低度 (3.52 mg/m3) 过颗粒物仍然会损害渐进性运动能力和大多数精子运动参数 (VAP,VSL,ALH).
影响依赖于度,更高度显示出更明显的影响.

结论:

在精子成熟的关键时期,急性暴露于白树烟雾会对精子运动产生负面影响.
香烟的挥发性阶段,而不仅仅是颗粒物,似乎是导致精子功能受损的重要因素.
研究结果表明,与野火烟雾暴露相关的男性不孕症的潜在机制.

关键词:

空气污染空气污染生物质是烟雾中的生物质.男人的生育能力男人的生育能力精子的成熟精子的成熟精子运动性精子运动性野地大火野地大火是什么意思

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