Add time:07/13/2019         Source:sciencedirect.com

The present study pertains to the possible adverse effects of Penconazole (cas 66246-88-6) exposure on the lung of adult rats, and to the potential ability of vitamin E (Vit E) in mitigating the toxicity induced by this fungicide. Male Wistar rats were divided into four groups of six animals each: Group I (Controls): rats drank distilled water; Group II (PEN): rats received, by gavage, 50 mg/kg body weight (1/40 LD50) of penconazole every 2 days during 10 days; Group III (Vit E): rats received daily 100 mg α-tocopherol acetate/kg body weight during 10 days by gavage; and Group IV (Vit E + PEN): rats received both vitamin E (100 mg α-tocopherol acetate/kg body weight) and penconazole (50 mg/kg body weight), being vitamin E given as a daily dosage and penconazole every 2 days, by gavage during 10 days. Results showed that penconazole induced oxidative stress in the lung demonstrated by an increase in malondialdehyde (+77%), hydrogen peroxide (+58%) and advanced oxidation protein product (+22%) levels, as compared to the controls. Furthermore, a decrease in the activities of catalase (−41%), superoxide dismutase (−45%), glutathione peroxidase (−23%) and acetylcholinesterase (−67%), and an increase in the levels of non-protein thiols (+17%), glutathione (+7%) and vitamin C (+44%) were registered. Abnormalities in lung histological sections such as alveolar edema, infiltration of inflammatory cells (leukocytes) and emphysema, were also observed following penconazole exposure. Vitamin E ameliorated the biochemical parameters, as well as the histological impairments induced by this fungicide. In conclusion, our study demonstrated that vitamin E, a natural antioxidant, was effective in alleviating penconazole-induced lung damage in Wistar rats.

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