评估水生脊椎动物的内分泌干扰 - 确定物质诱导的甲状腺介导作用模式
Laurent Lagadic1, Katherine K Coady2, Oliver Körner3
1Bayer AG - R&D, Crop Science Division, Environmental Safety, Monheim, Germany.
Environment international
|September 13, 2024
概括
这项研究引入了一种新的决策逻辑,用于识别影响水生脊椎动物甲状腺的内分泌干扰物. 它使用两动物来评估甲状腺功能障碍,确保科学严谨性并尽量减少动物试验.
科学领域:
- 环境毒理学环境毒理学
- 内分泌学 在内分泌学.
- 生态毒理学 生态毒理学
背景情况:
- 内分泌干扰化学物质 (EDC) 对野生动物和人类构成风险.
- 目前对EDC的定义要求与内分泌活动相关的不良影响.
- 缺乏标准化的方法来评估非哺乳动物脊椎动物的甲状腺功能障碍.
研究的目的:
- 开发一种基于证据的决策逻辑,用于识别水生脊椎动物中甲状腺介导的内分泌干扰.
- 为了与测试和评估的综合方法 (IATA) 原则保持一致.
- 为甲状腺EDCs的监管评估提供框架.
主要方法:
- 使用两动物 (例如,Xenopus) 作为甲状腺干扰评估的模型生物.
- 纳入了现有的测试指南,并提出了测试选择和解释的新考虑因素.
- 采用证据权重方法,考虑所有测试终点及其模式.
- 包括对已识别效应的作用模式和人口相关性评估.
主要成果:
- 提出的逻辑有效地识别了水生脊椎动物中甲状腺介导的内分泌干扰特性.
- 这种Xenopus Eleutheroembryonic甲状腺检测检测屏幕用于甲状腺活动.
- 两生物变形试验评估了活动和人口相关的逆境.
- 该逻辑可以适应其他物种 (例如鱼类),并尽量减少动物试验.
结论:
- 开发的决策逻辑为评估非哺乳动物脊椎动物甲状腺干扰提供了强大的框架.
- 它促进了关于物质是否符合甲状腺通路内分泌干扰物定义的监管结论.
- 该方法确保了全面的数据评估,并促进了伦理科学实践.
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