Abstract
This study was carried out to test the antioxidant effects of Quercetin on sperm parameters and antioxidant enzymes in male rats assessed in vitro after H(2) 0(2) -mediated sperm oxidative damage. Spermatozoa were incubated with Quercetin (10, 100 and 200 μm), H(2) O(2) alone (100 μm) and Quercetin (100, 200 μm) + H(2) O(2) (100 μm) repectively, for 3 h at 32 °C. After that, sperm parameters (motility, viability and abnormal morphology), malondialdehyde, superoxide dismutase, catalase and glutathione peroxidase levels were determined. We found that exposure to H(2) O(2) let to significant increase in lipid peroxidation (LP) and abnormal morphology associated with significant decrease in sperm motility, viability and antioxidant enzymes activities. When Quercetin was added in culture medium, it improved activities of antioxidant enzymes and protected spermatozoa against the deleterious effect of H(2) O(2) on sperm parameters and LP. This study demonstrated that supplementation with Quercetin could protect spermatozoa against H(2) O(2) -mediated sperm damage.
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