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Preventive effects of zingerone on cardiac mitochondrial oxidative stress, calcium ion overload and adenosine triphosphate depletion in isoproterenol induced myocardial infarcted rats

机译:条目对心肌细胞氧化应激,钙离子过荷和异丙醇三磷酸含量的预防效应诱导异丙肾上腺素梗死大鼠

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Cardiac mitochondrial oxidative stress, calcium ion (Ca2+) overload and adenosine triphosphate (ATP) depletion play an important role in the pathogenesis of myocardial infarction. The preventive effects of zingerone on oxidative stress, Ca2+ overload and ATP depletion in isoproterenol induced myocardial infarction were evaluated in rats. Rats were pretreated with zingerone (6 mg kg(-1) body weight) daily for a period of 14 days. Isoproterenol (100 mg kg(-1) body weight) was injected subcutaneously into rats twice at an interval of 24 h (on 15th and 16th day) to induce myocardial infarction. Isoproterenol induced myocardial infarcted rats showed a significant increase in the levels/concentrations of cardiac diagnostic marker, heart mitochondrial lipid peroxidation, Ca2+, and a significant decrease in the activities/concentrations of heart mitochondrial superoxide dismutase, glutathione peroxidase, reduced glutathione, tricarboxylic acid cycle and respiratory chain enzymes and ATP. Zingerone pretreatment showed significant preventive effects on all the biochemical parameters evaluated. Furthermore, the biochemical findings were correlated with transmission electron microscopic study on the structure of heart mitochondria. The in vitro study revealed the reactive oxygen species (ROS) scavenging effects of zingerone. Thus zingerone prevented mitochondrial damage by preventing cardiac mitochondrial oxidative stress, Ca2+ overload and ATP depletion in isoproterenol induced myocardial infarcted rats. The observed effects could be due to zingerone's anti-inotropic and ROS scavenging properties.
机译:心脏线粒体氧化应激,钙离子(Ca2 +)过载和三磷酸腺苷(ATP)耗尽在心肌梗死的发病机制中起重要作用。在大鼠中,评估了大鼠中,在异丙醇诱导的心肌梗死中致氧化对氧化应激的预防效果,CA2 +过载和ATP耗尽。每天预处理大鼠(6mg kg(-1)体重),每天为14天。异丙醇(100mg kg(-1)体重)以24小时(第15和第16天)的间隔皮下注射到大鼠中,以诱导心肌梗塞。异丙醇诱导的心肌梗死的大鼠表现出心肌诊断标志物,心脏线粒体脂质过氧化,CA2 +的水平/浓度的显着增加,以及心脏线粒体超氧化物歧化酶,谷胱甘肽过氧化物酶,减少的谷胱甘肽,三羧酸循环的活性/浓度的显着降低和呼吸链酶和ATP。条形预处理表现出对评估所有生化参数的显着预防效果。此外,生物化学发现与透射电子显微镜研究相关的心脏线粒体结构。体外研究揭示了条箱酮的活性氧物质(ROS)清除效应。因此,通过预防心脏线粒体氧化应激,Ca2 +过载和ATP耗尽在异丙醇诱导的心肌梗死大鼠中,防止了线粒体损伤。观察到的效果可能是由于宫廷的抗体抗体和ROS清除性能。

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