草甘基除草剂混合物的监管相关剂量的早期生命暴露与肝脏功能障碍的发展之间的相关性
Viorica Dinca1, Alaa Mohamad Hbous1, Anca Oana Docea2
1Doctoral School, University of Medicine and Pharmacy of Craiova, Romania.
Current health sciences journal
|November 20, 2025
概括
低水平的除草剂混合物,包括草甘,2,4-D和迪坎巴,在老鼠中因产前暴露到青春期而导致严重的肝损伤. 目前的"安全"限值可能无法充分保护对结合除草剂的毒性.
科学领域:
- 毒理学 毒理学 毒理学
- 环境健康 环境健康
- 动物研究 动物研究
背景情况:
- 监管部门的除草剂风险评估通常使用单一化合物,高剂量研究.
- 人类广泛接触低水平除草剂混合物是常见的.
- 慢性低剂量除草剂混合物暴露对肝功能的影响需要进一步研究.
研究的目的:
- 为了研究产前到青少年暴露于单独或与2,4-D和迪坎巴 (COMB) 结合的草甘 (GLY) 对大鼠肝功能的影响.
- 在暴露于规范剂量的除草剂后,评估肝脏生物化学和组织学.
- 评估目前针对除草剂混合物的监管限值的充分性.
主要方法:
- 怀孕的Wistar大鼠暴露于草甘,草甘-2,4-D-dicamba混合物,或通过饮用水进行控制.
- 后代继续暴露,直到断奶后90天.
- 分析了血清脂质,肝酶,肝体重和肝组织学.
主要成果:
- 结合的除草剂暴露显著改变肝酶 (ALAT,ASAT,ALP) 和脂质 (胆固醇,甘油三) 在性别特定的方式.
- 高剂量的草甘单独也诱导了肝脏的生物化学变化.
- 组织学检查显示了与剂量相关的肝损伤,包括静脉扩张,退化和亡,在混合物组中最严重.
结论:
- 长期暴露于规范剂量的除草剂,单独或作为混合物,会导致大鼠肝脏显著的生物化学和结构性损伤.
- 混合物毒性,特别是与草甘,2,4-D和迪坎巴,放大肝脏损伤.
- 这些发现挑战了单一化学品风险评估的充分性,并强调需要重新评估混合物对脆弱人群的毒性.
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