线粒体动力学障碍:解开丁诺富兰对心脏毒性的影响
Jiaping Zhu1, Qiao Tao1, Gaoyi Du1
1Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, 310058, China.
Environmental pollution (Barking, Essex : 1987)
|December 30, 2023
概括
丁诺富兰是一种常见的类杀虫剂,通过破坏线粒体,损害头的心脏功能. 这种杀虫剂暴露导致细胞死亡增加和心脏路径改变,而R-dinotefuran显示出更大的毒性.
科学领域:
- 环境毒理学环境毒理学
- 心血管科学 心血管科学
- 线粒体生物学 线粒体生物学
背景情况:
- 农药暴露与心血管问题有关.
- 尼可类药物是广泛使用的杀虫剂,其对心血管的影响尚不清楚.
- 线粒体动力学在类毒素心脏毒性的作用尚不清楚.
研究的目的:
- 为了研究neonicotinoiddinotefuran在Xenopus laevis鱼中的心脏毒性作用.
- 探索线粒体动力学在丁诺特诱导心脏毒性的作用.
- 为了比较dinotefuran的两个反体对心脏功能的毒性.
主要方法:
- 在21天内,将头暴露在dinotefuran反体的环境度中.
- 评估心率,心肌细胞亡,心脏收缩功能和葡萄糖代谢.
- 采用了转录组,代谢学,传输电子显微镜 (TEM) 和蛋白质免疫阻塞.
- 分析了线粒体形态,融合,线粒体,活性氧物种 (ROS) 和ATP含量.
主要成果:
- 丁诺富兰暴露改变了心率并增加了心肌细胞亡.
- 心脏收缩功能和葡萄糖代谢途径显著受到干扰.
- TEM揭示了线粒体胀,线粒体的增加和线粒体融合的增强.
- 线粒体呼吸链功能障碍导致ROS增加和ATP减少.
- R-dinotefuran表现出比S-enantiomer更高的心脏毒性.
结论:
- 丁诺富兰通过破坏线粒体功能和动力学来诱导心脏毒性.
- 线粒体疾病,包括改变形态和能量生产,是关键机制.
- 在dinotefuran毒性中的等离子体差异可能与呼吸链激活能力有关.
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