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Modulatory Potentials of Aqueous Leaf and Unripe Fruit Extracts of Carica papaya Linn. (Caricaceae) Against Carbon Tetrachloride And Acetaminophen-Induced Hepatotoxicity In Rats.

Olufunsho Awodele, Omoniyi Yemitan, Peter Uduak Ise, Victor Olabowale Ikumawoyi.

Cited by (1)

Abstract
Introduction: Carica papaya Linn is used in a traditional medicine for hepatobiliary disorders. This study investigated the hepatomodulatory effects of aqueous extracts of C. papaya leaf (CPL) and unripe fruit (CPF) at doses of 100 and 300 mg/kg on carbon tetrachloride (CCl4) and acetaminophen (ACM)-induced liver toxicities in rats. Materials and Methods:Rats were administered CCl4 (3 ml/kg in olive oil, i.p.) followed by oral administration of CPL and CPF at 2, 6 and 10 h intervals. The ACM model proceeded with the same method but inclusive of animals treated with N-acetyl cysteine (3 ml/kg i.p). At the end of the study, serum levels of liver biomarkers and antioxidant enzymes were assessed and histology of the liver tissues determined.
Results:There was a significant (P< 0.05) reduction in CCl4 and ACM-induced increases in serum levels of alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase and direct bilirubin at 100 and 300 mg/kg, respectively. The levels of catalase (CAT), superoxide dismutase and reduced GSH were decreased in both models with corresponding significantly (P< 0.05) elevated level of malondialdehyde. However, these antioxidant enzymes were significantly (P< 0.05) increased in CPL and CPF-treated rats. Histopathological assessment of the liver confirmed the protective effects of CPL and CPF on CCl4 and ACM-induced hepatic
damage evidenced by the normal presentation of liver tissue architecture. Conclusion:These results indicate that aqueous extracts of C. papaya may be useful in preventing CCl4 and ACM-induced liver toxicities.

Key words: Acetaminophen, Antioxidant, Carbon tetrachloride, Carica papaya, Hepatotoxicity, Histopathological assessment


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