Modulatory effect of fermented Tetracarpidium conophorum (African walnut) supplemented diet on cadmium-induced toxicity in rats
2022
Adeyemi, O. S. | Anointing, P. E. | Alejolowo, O. O. | Evbuomwan, I. O. | Nwonuma, C. O. | Awakan, O. J. | Ojo, O. A. | Olaniran A. F.
Tetracarpidium conophorum (African Walnut) is a plant with acclaimed multi-therapeutic properties in different parts of the plant. This research investigated the effect of fermented walnut supplemented diet on cadmium-induced toxicity in the liver and brain of rats. Twenty male Wistar rats were divided into four groups of five animals each weighing between 90-140 g. Group 1 received 5 mg/kg body weight cadmium chloride (CdCl₂) and normal rat feed. Group 2 received a normal rat diet while groups 3 and 4 received 5 mg/kg body weight of cadmium chloride, and 5% and 10% walnut supplemented feed respectively. Cadmium (Cd) was administered daily for 6 weeks by oral intubation. Rats were sacrificed 24 hrs after the final treatment. Cd exposure elicited increased activities of Acetylcholinesterase, Superoxide dismutase, Catalase as well as elevated Glutathione levels. In addition, Cd exposure caused increases in rat plasma cholesterol and triglyceride concentration. The fermented walnut supplemented diet restored some rats' biochemical parameter to near normal comparable to control. Our study shows that walnut supplemented food could substantially moderate Cd-induced toxicity in rat liver and brain while providing health and nutritional benefits. Hence, it could be useful for occupationally exposed individuals as a dietary intervention to reduce adverse health effects.
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