Abstract
The current study was conducted to evaluate the toxic effects of emamectin insecticide in mice and the possible protective effect of pumpkin seed oil. Treated mice received emamectin benzoate in the diet at 75-ppm for 8 weeks, while another group of animals received emamectin in addition to pumpkin seed oil at a dose of 4 ml/kg. Biochemical analysis of MDA, DNA fragmentation, GSH, CAT and SOD was performed in liver, kidney and brain as oxidant/antioxidant biomarkers. In addition, gene expression of CYP2E1 and Mgst1 and histopathological alterations in these organs were evaluated. Emamectin administration induced oxidative stress in liver and kidney evidenced by elevated levels of MDA and percentage of DNA fragmentation with suppression of GSH level and CAT and SOD activities. Brain showed increase of MDA level with inhibition of SOD activity. Relative expressions of CYP2E1 and Mgst1 genes were significantly elevated in both liver and kidney. Emamectin produced several histopathological changes in liver, kidney and brain. Co-administration of pumpkin seed oil produced considerable protection of liver and kidney and complete protection of brain. In conclusion, pumpkin seed oil has valuable value in ameliorating the toxic insult produced by emamectin in mice.
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