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IN VITRO AND IN VIVO PROTECTIVE EFFECT OF HONOKIOL ON RAT LIVER FROM PEROXIDATIVE INJURY

机译:厚朴酚对过氧化损伤大鼠肝脏的体外和体内保护作用

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Honokiol, a compound extracted from the Chinese medicinal herb Magnolia officinalis, has a strong antioxidant effect on the inhibition of lipid peroxidation in rat heart mitochondria. To investigate the protective effect of honokiol on hepatocytes from peroxidative injury, oxygen consumption and malondialdehyde formation for in vitro iron-induced lipid peroxidation were assayed, and the mitochondrial respiratory function for in vivo ischemia-reperfusion injury were evaluated in rat liver, respectively. The inhibitory effect of honokiol on oxygen consumption and malondialdehyde formation during iron-induced lipid peroxidation in liver mitochondria showed obvious dose-dependent responses with a concentration of 50% inhibition being 2.3x10(-7)M and 4.96x10(-7)M, respectively, that is, 550 times and 680 rimes more potent than alpha-tocopherol, respectively. When rat livers were introduced with ischemia 60 min followed by reperfusion for 60 min, and then pretreated with honokiol (10 ug/kg BW), the mitochondrial respiratory control ratio (the quotient of the respiration rate of State 3 to that of State 4) and ADP/O ratio from the honokiol-treated livers were significantly higher than those of non-treated livers during reperfusion. The dose-dependent protective effect of honokiol on ischemia-reperfusion injury was 10 mu g - 100 mu g/Kg body weight. We conclude that honokiol is a strong antioxidant and shed insight into clinical implications for protection of hepatocytes from ischemia-reperfusion injury. [References: 30]
机译:厚朴酚是从中草药木兰中提取的化合物,对大鼠心脏线粒体的脂质过氧化具有很强的抗氧化作用。为了研究厚朴酚对过氧化损伤对肝细胞的保护作用,测定了体外铁诱导的脂质过氧化的耗氧量和丙二醛形成,并评估了大鼠肝脏中线粒体呼吸功能对体内缺血-再灌注损伤的作用。厚朴酚对铁诱导的肝线粒体脂质过氧化过程中的耗氧量和丙二醛形成的抑制作用表现出明显的剂量依赖性反应,浓度为50%时的抑制作用为2.3x10(-7)M和4.96x10(-7)M,即分别比α-生育酚的效力高550倍和680倍。当大鼠肝脏缺血60分钟后再灌注60分钟,然后用厚朴酚(10 ug / kg BW)预处理时,线粒体呼吸控制比(状态3的呼吸速率与状态4的呼吸速率的商)厚朴酚处理的肝脏在再灌注过程中的ADP / O比值和ADP / O比均显着高于未处理的肝脏。厚朴酚对缺血-再灌注损伤的剂量依赖性保护作用是10μg-100μg/ Kg体重。我们得出结论,厚朴酚是一种强抗氧化剂,对保护肝细胞免受缺血再灌注损伤的临床意义有深入的了解。 [参考:30]

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