首页> 外文期刊>Journal of biochemical and molecular toxicology >Protective effects of N-acetyl cysteine on lipid peroxide metabolism on isoproterenol-induced myocardial infarcted rats.
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Protective effects of N-acetyl cysteine on lipid peroxide metabolism on isoproterenol-induced myocardial infarcted rats.

机译:N-乙酰半胱氨酸对异丙肾上腺素诱发的心肌梗塞大鼠脂质过氧化物代谢的保护作用。

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The present study was designed to evaluate the preventive effects of N-acetyl cysteine on lipid peroxide metabolism in isoproterenol (ISO) induced myocardial infarcted rats. Male albino Wistar rats were pretreated with N-acetyl cysteine (5 and 10 mg/kg) daily for a period of 14 days. After the pretreatment period, ISO (100 mg/kg) was subcutaneously injected to rats twice at an interval of 24 h. Increased activities of serum creatine kinase, creatine kinase-MB, lactate dehydrogenase, and increased intensities of serum lactate dehydrogenase-isoenzyme bands (LDH-1, LDH-2) were observed in ISO-induced rats. The heart lipid peroxidation products were significantly increased, and the antioxidant system was significantly reduced in ISO-induced rats. Pretreatment with N-acetyl cysteine (5 and 10 mg/kg) to ISO-induced rats showed significant effects on all the biochemical parameters studied. Histopathological findings of the myocardium also showed the protective role of N-acetyl cysteine in ISO-induced rats. Furthermore, in vitro study confirmed the potent-free radical scavenging activity of N-acetyl cysteine. The effect at a dose of 10 mg/kg of N-acetyl cysteine was more pronounced than the dose, 5 mg/kg. The results of our study show that N-acetyl cysteine protects the heart against ISO-induced myocardial infarction by its free radical scavenging effect.
机译:本研究旨在评估N-乙酰半胱氨酸对异丙肾上腺素(ISO)诱发的心肌梗塞大鼠脂质过氧化物代谢的预防作用。每天用N-乙酰半胱氨酸(5和10 mg / kg)对雄性白化Wistar大鼠进行预处理,持续14天。在预处理期之后,以24小时的间隔皮下向大鼠皮下注射ISO(100 mg / kg)两次。在ISO诱导的大鼠中观察到血清肌酸激酶,肌酸激酶-MB,乳酸脱氢酶的活性增加,以及血清乳酸脱氢酶-同工酶带(LDH-1,LDH-2)的强度增加。在ISO诱导的大鼠中,心脏脂质过氧化产物显着增加,抗氧化系统显着减少。用N-乙酰半胱氨酸(5和10 mg / kg)对ISO诱导的大鼠进行预处理对所研究的所有生化参数均显示出显着影响。心肌的组织病理学发现还显示了N-乙酰半胱氨酸在ISO诱导的大鼠中的保护作用。此外,体外研究证实了N-乙酰基半胱氨酸的有效自由基清除活性。剂量为10 mg / kg的N-乙酰基半胱氨酸比5 mg / kg的作用更为明显。我们的研究结果表明,N-乙酰基半胱氨酸具有自由基清除作用,可保护心脏免受ISO诱发的心肌梗塞的侵害。

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