Attenuation of DNA damage and mRNA gene expression in hypoxic rats using natural antioxidants |
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| Authors: | Laila Mohamed Fadda Hala A. Attia Nouf Mohamed Al‐Rasheed Hanaa Mahmoud Ali Manal Aldossari |
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| Affiliation: | 1. Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia;2. Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt;3. Department of Genetics and Cytology, National Research Centre, Dokki, Egypt;4. CommonFirst Year Deanship, King Saud University, Riyadh, Kingdom of Saudi Arabia |
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| 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. |
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| Keywords: | apoptotic markers carnosine DNA damage hypoxia inflammatory molecules l‐ arginine |
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