251. Hepatoprotective effects of melatonin and celecoxib against ethanol-induced hepatotoxicity in rats
- Author
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Ubaid Ullah, Haroon Badshah, Zulkifal Malik, Arif-ullah Khan, Zia Uddin, Sadia Sarwar, Akhtar Aman, Mahboob Alam, and Fawad Ali Shah
- Subjects
Male ,0301 basic medicine ,Antioxidant ,medicine.medical_treatment ,Immunology ,Pharmacology ,Protective Agents ,Toxicology ,medicine.disease_cause ,Hydropic degeneration ,Nitric oxide ,Rats, Sprague-Dawley ,Melatonin ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Liver Function Tests ,medicine ,Animals ,Immunology and Allergy ,Liver injury ,Ethanol ,General Medicine ,Glutathione ,medicine.disease ,Rats ,Oxidative Stress ,030104 developmental biology ,chemistry ,Celecoxib ,030220 oncology & carcinogenesis ,Drug Therapy, Combination ,Lipid Peroxidation ,Chemical and Drug Induced Liver Injury ,Biomarkers ,Oxidative stress ,medicine.drug - Abstract
Objectives: Several studies demonstrated the antioxidant and anti-inflammatory role of melatonin and celecoxib. This study is designed to explore the underlying mechanism of hepatoprotective effects of melatonin and celecoxib against ethanol-induced hepatotoxicity by morphological, and biochemical approaches.Materials and methods: Adult male rats were divided into five groups: saline, ethanol, melatonin, and celecoxib were administered for 11 consecutive days after ethanol injection. Biochemical analyses were performed for the determination of glutathione (GSH), glutathione S-transferase (GST), and inducible nitric oxide (iNOS). Immunohistochemistry was performed to determine the level of different inflammatory markers.Results: Histopathological results showed that ethanol-induced marked hepatic injury leads to cloudy swelling, hydropic degeneration, apoptosis, and focal necrosis in all hepatic zones. Biochemical analysis revealed significant increases in serum transaminases and alkaline phosphatase in the ethanol group. Oxidative stress associated with attenuated antioxidant enzymes was also spotted in the ethanol group, as ethanol down-regulated GSH, GST, and upregulated NO. Additionally, ethanol increased the activation and the expression of tumor necrotic factor (TNF-α), p-NFKB, and COX2. Finally, hepatic cellular apoptosis was clearly obvious in ethanol intoxicated animals using activated JNK staining.Conclusion: These results provided pieces of evidence that the hepatoprotective effect of melatonin and celecoxib is possibly mediated through the modulation of JNK and TNF-α signaling pathways with subsequent suppression of inflammatory and apoptotic processes.
- Published
- 2020
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