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糖酸盐的缺血积累控制了通过线粒体ROS的反损伤
Edward T Chouchani1,2, Victoria R Pell2, Edoardo Gaude3
1MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, UK.
Nature
|November 11, 2014
概括
在心脏病发作和中风中常见的缺血-再输液损伤是由线粒体活性氧物种 (ROS) 驱动的. 这项研究表明,在缺血期间的酸盐积累会在再注射时引起ROS的产生,从而提供了一个新的治疗点.
科学领域:
- 生物化学 生物化学
- 病理生理学 病理生理学
- 代谢学 代谢学 代谢学
背景情况:
- 缺血-再输液损伤是心脏病发作和中风的关键因素.
- 线粒体反应性氧物种 (ROS) 在反过程中导致细胞损伤.
- 在这种情况下,驱动ROS产生的特定代谢途径尚未完全理解.
研究的目的:
- 在缺血症-再输液损伤期间确定负责线粒体ROS生产的保存代谢途径.
- 在这个过程中调查简要积累在这个过程中的作用.
- 探索针对苏克辛酸代谢的治疗策略.
主要方法:
- 在体内对各种组织进行比较的代谢分析.
- 调查酸脱酶活性和相关的代谢途径.
- 在心脏病发作和中风的小鼠模型中,药理上抑制了酸盐积累.
主要成果:
- 酸循环中介物酸的选择性积累是缺血的普遍代谢特征.
- 缺血性酸盐的积累驱动了线粒体ROS的产生,通过酸盐脱酶和复杂I.
- 在心脏病发作和中风模型中,药理上抑制酸盐积累显著改善了缺血症-再输液损伤.
结论:
- 在缺血症-再输液损伤期间,一个涉及酸盐积累的保存代谢途径是线粒体ROS生产的基础.
- 这一途径将以前没有联系的缺血-再输血病理学方面联系起来.
- 向糖酸盐积累是一种有前途的治疗策略,可以减少缺血症-再输液损伤.
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