UNLABELLED: Hepatotoxicity is one of the most serious adverse effects of antituberculosis drugs. The aim of this study was to produce a rat model of isoniazid-rifampicin (INH-RIF) induced hepatotoxicity. MATERIALS AND METHODS: Wistar rats (100-150 g) were treated with different doses of INH i.e. 25, 50 and 75 mg/kg/day with a fixed dose of RIF i.e. 50 mg/kg/day intragastrically for a period of 28 days. Serum glutamate oxaloacetate aminotransferase (SGOT), glutamate pyruvate aminotransferase (SGPT), bilirubin (Bil) and alkaline phosphatase (ALP) were estimated at 0,14, 21 and 28 days in rats. Histological analysis was carried out to assess the liver. RESULTS: Treatment of rats with INH-RIF (50 mg/kg/day each) induced hepatotoxicity as judged by elevated serum SGPT, SGOT, Bil and ALP as compared with their base line. Histological evaluation of INH-RIF induced hepatotoxicity also showed liver damage. CONCLUSION: The present study suggests that 50 mg/kg/day each of INH-RIF was selected as hepatotoxic dose (i.e. minimum dose with maximum hepatotoxicity) in wistar rats.
UNLABELLED: Hepatotoxicity is one of the most serious adverse effects of antituberculosis drugs. The aim of this study was to produce a rat model of isoniazid-rifampicin (INH-RIF) induced hepatotoxicity. MATERIALS AND METHODS:Wistar rats (100-150 g) were treated with different doses of INH i.e. 25, 50 and 75 mg/kg/day with a fixed dose of RIF i.e. 50 mg/kg/day intragastrically for a period of 28 days. Serum glutamate oxaloacetate aminotransferase (SGOT), glutamate pyruvate aminotransferase (SGPT), bilirubin (Bil) and alkaline phosphatase (ALP) were estimated at 0,14, 21 and 28 days in rats. Histological analysis was carried out to assess the liver. RESULTS: Treatment of rats with INH-RIF (50 mg/kg/day each) induced hepatotoxicity as judged by elevated serum SGPT, SGOT, Bil and ALP as compared with their base line. Histological evaluation of INH-RIF induced hepatotoxicity also showed liver damage. CONCLUSION: The present study suggests that 50 mg/kg/day each of INH-RIF was selected as hepatotoxic dose (i.e. minimum dose with maximum hepatotoxicity) in wistar rats.
Authors: A Fernández-Villar; B Sopeña; J Fernández-Villar; R Vázquez-Gallardo; F Ulloa; V Leiro; M Mosteiro; L Piñeiro Journal: Int J Tuberc Lung Dis Date: 2004-12 Impact factor: 2.373
Authors: J R Mitchell; H J Zimmerman; K G Ishak; U P Thorgeirsson; J A Timbrell; W R Snodgrass; S D Nelson Journal: Ann Intern Med Date: 1976-02 Impact factor: 25.391
Authors: Ali Ugur Emre; Guldeniz C Karadeniz; Oge Tascilar; Bulent H Ucan; Oktay Irkorucu; Kemal Karakaya; Mustafa Comert Journal: Dig Dis Sci Date: 2007-10-12 Impact factor: 3.199