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Research Article

The role of infliximab on paracetamol-induced hepatotoxicity in rats

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Pages 373-381 | Received 16 Nov 2012, Accepted 08 Feb 2013, Published online: 18 Mar 2013
 

Abstract

Paracetamol has a reasonable safety profile when consumed in therapeutic doses. However, it could induce hepatotoxicity and even acute liver failure when taken at an overdose. Infliximab is tumor necrosis factor alpha (TNF-α) inhibitor agent, which has been developed as a therapeutic agent for TNF-α-mediated disease. It acts by binding and neutralizing TNF. The aim of our study was to evaluate the hepatoprotective activity of infliximab on paracetamol-induced hepatotoxicity and to understand the relationship between the TNF-α and paracetamol-induced liver injury. Fifty-six rats were divided into eight groups as each composed of seven rats: (1) intact, (2) 7 mg/kg infliximab, (3) 140 mg/kg NAC, (4) 2 g/kg paracetamol, (5) 2 g/kg paracetamol + 140 mg/kg NAC, (6) 2 g/kg paracetamol + 3 mg/kg infliximab, (7) 2 g/kg paracetamol + 5 mg/kg infliximab and (8) 2 g/kg paracetamol + 7 mg/kg infliximab groups. Liver function tests including lipid peroxidation levels were analyzed and histopathological changes of liver were also observed. There were statistically significant increases in the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), levels of TNF-α and malondialdehyde (MDA) and decreases in the activity of superoxide dismutase (SOD) and level of glutathione (GSH) in the group treated with paracetamol. Infliximab administration dramatically reduced serum ALT, AST and TNF-α level. Also, it restored GSH, SOD and decreased MDA levels in liver. Liver histopathological examination showed that infliximab administration antagonized paracetamol-induced liver pathological damage. The results of present study suggest that infliximab has significant hepatoprotective activity on paracetamol-induced hepatotoxicity.

Acknowledgements

This research is included in master thesis of Irmak FERAH and was conducted in the Laboratory of Pharmacology at Ataturk University, Faculty of Medicine, 25240 Erzurum/Turkey.

We have patent for using TNF alpha inhibitors on hepatotoxicity.

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