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新兴的PFOS替代品 8:2 Cl-PFESA的健康风险评估:来自小鼠精子生成的证据和安全暴露值的推导
Ziwen An1, Zheyuan Liu1, Xiuli Zeng1
1Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang 050017, PR China.
Environment international
|February 12, 2026
概括
新出现的污染物 8:2 化多化乙烯硫酸盐 (8:2 Cl-PFESA) 导致雄性小鼠的丸损伤和精子异常. 这项研究为评估新化学品的风险提供了一个框架,以防止危害.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 生殖生物学 生殖生物学
背景情况:
- 全球生育率的下降与PFAS等环境污染物有关.
- 对于新兴的PFAS替代品的男性生殖毒性的了解有限,例如 8:2 Cl-PFESA.
- 需要对新型化学污染物的强有力的风险评估.
研究的目的:
- 为了研究 8:2 Cl-PFESA在雄性小鼠中的丸毒性.
- 阐明毒性的潜在分子机制.
- 为新出现的污染物建立基于健康的风险评估框架.
主要方法:
- 雄性小鼠暴露在 8:2 Cl-PFESA (0.04,0.2,1.0 mg/kg) 中,持续了 12 周.
- 丸组织的组织病理学检查.
- 血清丸激素和精子参数的分析.
- 综合多omics分析 (基因组学,蛋白质组学,代谢组学).
- 基准剂量建模和风险评估 (HQ,MOE,CRfD).
主要成果:
- 剂量依赖的丸损伤,包括精子管乱和精子异常.
- 观察到血清丸激素水平降低.
- 被确定为核心机制的脂体信号通路,与F-actin破坏有关.
- 预测的BMDL10为0.023 mg/kg/天,CRfD为4.577 ng/kg/天.
- 在职业人群中确定了潜在的非致癌风险 (HQ=1.60,MOE=0.59).
结论:
- 8:2 Cl-PFESA对男性的生殖有显著的毒性.
- 该研究提出了一个新的,综合框架,用于早期风险表征新出现的污染物.
- 这种方法支持积极的化学品监管和防止令人遗憾的替代品.
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