Protective effect of aqueous fruit extract of Mondia whitei against cadmium-induced hepatotoxicity in rats

Introduction: Mondia whitei (Hook.f.) Skeels is rich in antioxidant activity and is known for its nutritional and medicinal uses. This study evaluated the protective effect of M. whitei fruit against cadmium-induced hepatic damage in rats. Methods: Twenty-five albino (Wistar strain) rats were randomly assigned into five equal groups. Rats in group I served as control, rats in group II were intoxicated with 5 mg/kg body weight (b.w.) cadmium chloride (CdCl2) for 5 days via an oral route, while groups III, IV, and V were respectively administered with 5 mg/kg b.w. CdCl2 for 5 days co-treated with 70 mg/kg b.w silymarin, 250 and 500 mg/kg b.w. of aqueous fruit extract of M. whitei (AEMW) for 7 days. Results: Cadmium caused a significant (P 0.05) increase in the concentration of cadmium in the liver as well as liver function markers such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and bilirubin. In addition, a significant (P 0.05) elevation in the level of malondialdehyde (MDA) and a reduction in the nitric oxide (NO) and antioxidant status were noted in the CdCl2-exposed rats; hepatic degeneration and congested portal area were also noted. These changes were, however, reduced in the cadmium-intoxicated rats co-treated with silymarin, 250 mg/kg or 500 mg/kg AEMW. Conclusion: Our result suggests that AEMW exerts protective effects against CdCl2-induced hepatic damage in rats, and this might be due to the presence of phytochemicals in the plant capable of scavenging oxidative stress caused by cadmium.