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对基于塞尔托利细胞的假设不良结果途径的评估,以确定二松甲酸对正在发展的丸的影响
J M Rogers1, A N Buerger1, M M Heintz1
1ToxStrategies LLC, 31 College Place Suite B118, Asheville, NC 28801, United States.
Current research in toxicology
|March 24, 2025
概括
怀孕期间暴露于二松甲酸盐 (DINP) 可能会影响男性生殖发育. 目前的证据不足以通过拟议的不良结果途径将DINP的潜在PPAR激活与胎儿丸的不良结果联系起来.
科学领域:
- 生殖毒理学 生殖毒理学
- 发展生物学 发展生物学
- 内分泌学 在内分泌学.
背景情况:
- 在男性化编程窗口 (MPW) 期间暴露于甲酸盐可以破坏胎儿男性生殖发育.
- 已经提出了涉及雄激素依赖和独立机制的不良结果途径 (AOP).
- 过氧体增殖器激活受体 (PPAR) 激活和塞尔托利细胞效应是假设的关键事件 (KE).
研究的目的:
- 评估证据,将二尼尔甲酸盐 (DINP) 暴露与基于塞尔托利细胞的假设AOP对男性生殖发育影响的相关证据.
- 在研究DINP对男性生殖系统的影响时评估偏差风险 (RoB).
- 确定AOP的每个组成部分的证据的充分性.
主要方法:
- 对同行评审的研究,毒理学报告和EPA的毒性预测器 (ToxCast) 数据进行系统的文献审查.
- 对所有已识别的研究进行偏差风险 (RoB) 评估.
- 评估分子启动事件 (MIE) 的证据,如PPAR激活和关键事件 (KEs),如塞尔托利细胞效应.
主要成果:
- 在大多数研究中发现了高的RoB.
- 实验室研究表明,DINP代谢物激活PPARs,小鼠的敏感性比人类更高.
- 在老鼠胎儿丸中,DINP没有激活与PPAR相关的基因;关于塞尔托利细胞效应和下游结果的证据有限,矛盾或不存在.
结论:
- 虽然DINP激活PPAR是合理的,但其与塞尔托利细胞效应及其下游不良结果的因果关系在拟议的AOP中没有得到当前证据的支持.
- 没有足够的证据可以将假设的基于塞尔托利细胞的AOP应用于DINP暴露.
- 需要进一步的研究来澄清DINP对男性生殖发育的影响机制和程度.
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