...
首页> 外文期刊>Journal of biochemical and molecular toxicology >Neither nitrite nor nitric oxide mediate toxic effects of nitroglycerin on mitochondria.
【24h】

Neither nitrite nor nitric oxide mediate toxic effects of nitroglycerin on mitochondria.

机译:亚硝酸盐和一氧化氮均不介导硝酸甘油对线粒体的毒性作用。

获取原文
获取原文并翻译 | 示例
           

摘要

It is commonly accepted that the major effect of nitroglycerin (NG) is realized through the release of nitric oxide (NO) catalyzed by aldehyde dehydrogenase-2 (ALDH2). In addition, it has been shown that NG inhibits mitochondrial respiration. The aim of this study was to clarify whether NG-mediated inhibition of mitochondrial respiration is mediated by NO. In rat liver mitochondria, NG inhibited complex-I-dependent respiration and induced reactive oxygen species (ROS) production, preferentially at complex I. Both effects were insensitive to chloral hydrate, an ALDH2 inhibitor. Nitrite, an NG intermediate, had no influence on either mitochondrial respiration or the production of ROS. NO inhibited preferentially complex I but did not elevate ROS production. Hemoglobin, an NO scavenger, and blue light had contrary effects on mitochondria inhibited by NO or NG. In summary, our data suggest that although NG induces vasodilatation via NO release, it causes mitochondrial dysfunction via an NO-independent pathway.
机译:人们普遍认为,硝酸甘油(NG)的主要作用是通过醛脱氢酶2(ALDH2)催化释放一氧化氮(NO)来实现的。另外,已经显示NG抑制线粒体呼吸。这项研究的目的是阐明是否NG介导的线粒体呼吸抑制作用是由NO介导的。在大鼠肝线粒体中,NG抑制复合物I依赖的呼吸并诱导活性氧(ROS)的产生,优先出现在复合物I上。这两种作用均对ALDH2抑制剂水合氯醛不敏感。亚硝酸盐,一种NG中间体,对线粒体呼吸或ROS的产生均无影响。 NO抑制优先复杂的I,但不会提高ROS的产生。血红蛋白(一种NO清除剂)和蓝光对NO或NG抑制的线粒体产生相反的影响。总而言之,我们的数据表明,尽管NG通过NO释放诱导血管舒张,但它通过NO非依赖性途径引起线粒体功能障碍。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号