EFFECTS OF DIALLYL DISULFIDE ON MERCURY CHLORIDE INDUCED HEPATOTOXICITY IN MALE WISTAR RATS.

Student: Yeside Ayomide Koiki
Supervisor: Miss J Anamelechi
HOD: Prof O Omolaja
Department of Biochemistry
College of Natural and Applied Sciences
Chrisland University, Owode, Ogun State

Abstract

Oxidative stress and cellular dysfunction are the main causes of the hepatotoxic effects of mercury chloride (HgCl₂), a well-established environmental toxin. Even though diallyl disulfide has been the subject of liver and renal studies, more research is still needed. In order to evaluate the biochemical indicators of liver function enzymes, this study examined the protective effects of diallyl disulfide (DADS) against HgCl₂-induced liver damage in male Wistar rats. An experimental strategy was applied. Twenty-eight adult male Wistar rats weighing 130–160 grams were split into four groups at random: DADS (40 mg/kg), HgCl₂ (6 mg/kg), Control (normal saline and olive oil), and DADS + HgCl₂ (40 mg/kg and 6 mg/kg). The Wistar rats were administered toxicant and treatment for 14 days before they were sacrificed to collect and analyse liver tissues. Biochemical assays were conducted to measure liver function markers, including Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), and Alkaline Phosphatase (ALP). Lipid peroxidation was assessed by determining the levels of Malondialdehyde (MDA), a key biomarker, while antioxidant defense was evaluated through the activities of Glutathione (GSH), Glutathione Peroxidase (GPx), Catalase, and Superoxide Dismutase (SOD). HgCl₂ exposure significantly elevated the levels of ALT, AST, and ALP, indicating substantial liver damage. MDA levels significantly increased, indicating increased oxidative stress and lipid peroxidation. Male Wistar Rats' hepatotoxic effects were considerably lessened by DADS treatment. In comparison to the HgCl₂ group, DADS improved the antioxidant defense system and raised the activities of GSH, GPx, Catalase, and SOD in the HgCl₂ + DADS group. According to the study's findings, DADS may be a useful treatment for stopping and treating liver damage brought on by mercury. Keywords: Mercury chloride, Diallyl disulfide, Reactive oxygen species, Antioxidant enzymes, Liver function biomarkers. vii

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