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Evaluation of Protective Effect of Vitamin E on Acrylamide Induced Testicular Toxicity in Wister Rats

Male wistar rats (weighting 160-180 g) were divided in six groups of 6 animals per group. Group A and F served as control. Groups B, C, D and E received acrylamide at 20 mg/kg body weight for 28 days and groups C and E received additionally vitamin E (50 IU/kg body weight) for 1 to 28 days and 29 - 42 nd days of experiment, respectively. The animals from groups A, B, and C were sacrificed on day 28 th of experiment and from groups D, E, and F on 42 nd day of experiment, respectively. There was significant decrease in the total sperm count and significant increase in the dead sperm count on day 28 th of study due to acrylamide toxicity. At recovery period, there was significant increase in the total sperm count of vitamin-E-treated group of animals as compared to untreated toxicated rats. But, values were significantly lower than control animals. Microscopically, the lesions in the testes of acrylamide intoxicated rats at 28 th day revealed destruction of seminiferous tubules at periphery. No spermatid and spermatocytes were seen in the seminiferous tubules. Detachment of spermatogonial cells started at periphery of seminiferous tubules. Atrophy of seminiferous tubules was a constant finding. Some tubules showed vacuolar degenerative changes in germinal epithelium. During the recovery period, destruction of seminiferous tubules, detachment of spermatogonial cells, and atrophy of seminiferous tubules were observed in group D and E. Few sections revealed only spermatogonial cells. At recovery period vitamin-E-treated rats revealed somewhat better architecture of the seminiferous tubules. Late spermatids were seen in few seminiferous tubules and other revealed starting of spermatogenesis. Thus, it appears that Vitamin E is not able to protect testes from acrylamide toxicity during active feeding, but after cessation of acrylamide feeding treatment with vitamin E revealed faster recovery as compare to not treated group.