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This study investigated the protective effects of watermelon (Citrullus lanatus) rind extract against cadmium-induced toxicity,on lipid profiles in Wistar rats. Twenty rats were divided into five groups: a control, a cadmium-only group, a cadmium with vitamin C group, and two groups receiving cadmium along with watermelon rind extract at 250 mg/kg and 500 mg/kg body weight. The experiment lasted for 60 days. Results showed that cadmium exposure significantly suppressed weight gain and induced dyslipidemia, expressed by elevated cholesterol and triglycerides. Treatment with the hydroethanolic watermelon rind extract, particularly at the 500 mg/kg dose, ameliorated these effects, resulting in a significant increase in percentage weight gain and a normalization of the lipid profile, comparable to the protective effects of vitamin C. The extract did not significantly reduce blood cadmium levels, suggesting its mechanism is likely cyto protection through antioxidant activity rather than metal chelation. The results show that watermelon rind phytowaste possesses bioactive compounds that can mitigate cadmium induced metabolic disturbances.
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