鱼藤酮
脂多糖
药理学
肝损伤
标记法
细胞凋亡
内科学
丙二醛
线粒体
线粒体呼吸链
生物
氧化应激
内分泌学
化学
医学
生物化学
作者
Qing Ai,Yuping Jing,Rong Jiang,Gang Li,Jie Dai,Qian Che,Dan Zhou,Mengying Jia,Jingyuan Wan,Li Zhang
标识
DOI:10.1016/j.intimp.2014.04.028
摘要
The syntheses of inflammatory mediators are energy-intensive processes and the mitochondria play pivotal roles in supporting these energy-requiring molecular responses. In the present studies, a mitochondrial respiratory complex I inhibitor rotenone was administrated in mice with lipopolysaccharide/D-galactosamine (LPS/D-Gal)-induced fulminant liver injury and the prophylactic and therapeutic effects on tissue injury were evaluated. We found that pretreatment with rotenone suppressed the elevation of plasma aminotransferases, alleviated the histopathological abnormalities and improved the survival rate of LPS/D-Gal-challenged mice. Pretreatment with rotenone has no obvious effects on hepatic malondialdehyde (MDA) contents but it significantly inhibited the up-regulation of both hepatic mRNA level and plasma protein level of TNF-α and IL-6. In the rotenone-pretreated group, the elevation of hepatic caspase-3, caspase-8 and caspase-9 activities induced by LPS/D-Gal decreased and rotenone reduced the count of TUNEL-positive apoptotic hepatocytes. In addition, posttreatment with rotenone at 1 h after LPS/D-Gal challenge also suppressed the elevation of plasma aminotransferases. These data suggest that mitochondrial complex I inhibition might be a potential approach for the control of inflammation.
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