和共同暴露改变了PC12活力和ER压力:从3×3因数设计的研究
Xiao Su1,2, Ruike Wang1,2, Yingying Wu1,2
1Department of Environmental Health, College of Public Health, Zhengzhou University, No.100 Kexue Avenue, Zhengzhou, Henan province 450001, China.
Toxicology research
|December 25, 2023
概括
低度的 (Pb) 和 (Cd) 的联合暴露比单个金属更有毒. 这种混合物通过细胞内网膜应激和亡诱导神经毒性,突出显示环境污染的风险.
科学领域:
- 环境毒理学环境毒理学
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
背景情况:
- 暴露于重金属,特别是联合暴露,对公众健康和生态系统构成重大风险.
- 有限的研究存在于低度的神经毒性影响,重金属的联合暴露,这更代表现实世界的场景.
研究的目的:
- 在实验室中研究低度 (Pb) 和 (Cd) 的联合暴露的神经毒性.
- 探索Pb和Cd混合物在诱导神经毒性的相互作用.
主要方法:
- PC12细胞暴露于不同度的Pb和Cd.
- 评估了细胞活力,活性氧物种 (ROS),线粒体膜潜力 (MMP) 和亡.
- 与PI3K/AKT信号传递和内质网膜 (ER) 压力相关的蛋白质表达通过西式斑点分析.
- 用一个3x3的因数设计来分析Pb和Cd之间的相互作用.
主要成果:
- 联合Pb和Cd暴露表明细胞毒性比单个金属更高.
- 在联合暴露时观察到PI3K/AKT通路,氧化应激和ER应激标志物的显著变化.
- 在诱导亡和ER压力方面,Pb和Cd之间的协同相互作用显而易见.
- 确定ER压力是Pb-Cd诱导的神经毒性的关键机制.
结论:
- 低剂量Pb和Cd的联合暴露会引起显著的神经毒性.
- 在混合重金属引发的亡途径中,ER压力起着至关重要的作用.
- 结果为金属混合物的毒理评估提供了基础,并为公众健康战略提供了信息,以应对环境污染.
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