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通过PPARα激活促进骨质细胞形成和骨质损失的多化物质 (PFAS)
Laimar C Garmo1, Mackenzie K Herroon1, Shane Mecca1
1Department of Pharmacology, Wayne State University School of Medicine and Karmanos Cancer Institute, Detroit, MI, United States.
Toxicology reports
|August 25, 2025
概括
通过降低骨矿物质密度和促进骨分解,对骨健康有害. 研究表明,小鼠暴露在GenX和PFHxS中导致骨变薄和组成变化.
科学领域:
- 环境毒理学
- 骨生物学
- 内分泌学
背景情况:
- 和多基物质 (PFAS) 是广泛存在的环境污染物.
- 新出现的证据将PFAS暴露与骨健康不良结果联系在一起,包括骨密度下降 (BMD).
- 由于PFAS导致的骨损伤的确切机制在很大程度上是未知的.
研究的目的:
- 研究遗留和替代PFAS,特别是GenX和PFHxS对骨健康的影响.
- 阐明PFAS影响骨代谢和细胞功能的机制.
- 在体内评估PFAS暴露对骨结构和组成的影响.
主要方法:
- 在实验室中使用小鼠骨髓巨细胞 (BMM) 接触到五种PFAS和单个化合物的混合物.
- 药理学和遗传学方法来确定PFAS效应的媒介.
- 在体内研究涉及男性FVB/N小鼠接触GenX或PFHxS12周.
- 分析骨矿物质密度,微观结构和组成.
主要成果:
- 一种环境相关的PFAS混合物促进了BMM的骨质形成.
- 在经过测试的PFAS中,GenX的诱导骨质细胞形成的倾向是最高的.
- 氧酶增殖器激活受体α (PPARα) 被确定为PFAS诱导的骨质形成的潜在媒介.
- 在雄性小鼠中,体内接触GenX或PFHxS降低了轨道骨和皮层骨厚度,改变了骨矿物成分.
结论:
- PFAS暴露会对骨健康产生负面影响,影响骨质量,骨结构和矿物成分.
- 确定GenX和PFHxS是关心骨健康的特定PFAS.
- PPARα可能在介导PFAS对骨的不良影响方面发挥作用.
- 需要进一步研究以充分了解与替代PFAS暴露相关的健康风险.
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