Original Research

Protective effects of methanolic leaf extracts of Monanthotaxis caffra against aflatoxin B1-induced hepatotoxicity in rats

Rhulani Makhuvele, Kenn Foubert, Nina Hermans, Luc Pieters, Luc Verschaeve, Esam Elgorashi
Onderstepoort Journal of Veterinary Research | Vol 89, No 1 | a1968 | DOI: https://doi.org/10.4102/ojvr.v89i1.1968 | © 2022 Rhulani Makhuvele, Kenn Foubert, Nina Hermans, Luc Pieters, Luc Verschaeve, Esam Elgorashi | This work is licensed under CC Attribution 4.0
Submitted: 17 August 2021 | Published: 23 March 2022

About the author(s)

Rhulani Makhuvele, Toxicology and Ethnoveterinary Medicine, Agricultural Research Council-Onderstepoort Veterinary research, Onderstepoort, South Africa; and, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
Kenn Foubert, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
Nina Hermans, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
Luc Pieters, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
Luc Verschaeve, Department of Risk and Health Impact Assessment, Sciensano, Brussels, Belgium; and, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
Esam Elgorashi, Toxicology and Ethnoveterinary Medicine, Agricultural Research Council-Onderstepoort Veterinary research, Onderstepoort, South Africa; and, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa


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Abstract

Aflatoxins are potent hepatotoxic and carcinogenic secondary metabolites produced by toxigenic fungi. The present study investigated the protective effect of methanolic leaf extracts of Monanthotaxis caffra (MLEMC) against aflatoxin B1-induced toxicity in male Sprague-Dawley rats. The rats were randomly divided into 6 groups of 8 animals each. Five groups were administered orally for seven days with three different concentrations of MLEMC (100 mg/kg, 200 mg/kg and 300 mg/kg), curcumin (10 mg/kg) or vehicle (25% propylene glycol). The following day, these groups were administered 1 mg/kg b.w. of aflatoxin B1 (AFB1). The experiment was terminated three days after administration of AFB1. Group 6 represented untreated healthy control. Serum aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, creatinine and liver histopathology were evaluated. Methanolic leaf extracts of M. caffra decreased the levels of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and creatinine in the sera of rats as compared with the AFB1 intoxicated group. Co-administration of MLEMC improved the histological characteristics of the hepatocytes in contrast to the AFB1 treated group, which had mild to severe hepatocellular injuries including bile duct proliferation, bile duct hyperplasia, lymphoplasmacytic infiltrate and fibrosis. Extracts of M. caffra were beneficial in mitigating the hepatotoxic effects of AFB1 in rats by reducing the levels of liver enzymes and preventing hepatic injury.


Keywords

mycotoxins; aflatoxins; Annonaceae; liver toxicity; liver enzymes; amelioration

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