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首页> 外文期刊>Journal of biochemical and molecular toxicology >Attenuation of DNA damage and mRNA gene expression in hypoxic rats using natural antioxidants
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Attenuation of DNA damage and mRNA gene expression in hypoxic rats using natural antioxidants

机译:用天然抗氧化剂衰减缺氧大鼠中的DNA损伤和mRNA基因表达

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摘要

Abstract This study aimed to explore the efficiency of carnosine (Cs) and/or l ‐arginine (Agn) in the downregulation of apoptotic and inflammatory molecule expression and DNA damage caused hepatic injury in response to sodium nitrite (Sd)‐induced hypoxia in rats. Rats were injected with Sd; Agn or/and Cs were administrated prior to Sd intoxication. Sd significantly decreased hemoglobin concentration and Bcl‐2 mRNA expression, while increased expressions of apoptotic markers (Bax and caspase), tumor necrosis factor‐α, nuclear factor kappa B, and C‐reactive protein and the oxidative DNA damage in hepatic tissue. Moreover, administration of Agn or/and Cs exhibited a modulation of the previous parameters. However, concurrent treatment with the forementioned antioxidants modulated these levels. It was concluded that the treatment with the combination of Agn and Cs was the most effective regimen in ameliorating Sd toxicity accompanied by hypoxic stress.
机译:摘要本研究旨在探讨肌肽(Cs)和/或l-精氨酸(Agn)在亚硝酸钠(Sd)诱导的大鼠缺氧引起的凋亡和炎症分子表达下调以及DNA损伤中的作用。给大鼠注射Sd;在Sd中毒之前给予Agn或/和Cs。Sd显著降低血红蛋白浓度和Bcl-2 mRNA表达,同时增加肝组织中凋亡标志物(Bax和caspase)、肿瘤坏死因子-α、核因子-κB和C反应蛋白的表达,以及氧化性DNA损伤。此外,Agn或/和Cs的给药表现出对先前参数的调制。然而,同时使用上述抗氧化剂可调节这些水平。因此,Agn和Cs联合治疗是改善Sd缺氧应激毒性的最有效方案。

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