Background: : Implementation of sperm preparation techniques based on cellular and molecular characteristics can improve the clinical outcomes of couples with male factor infertility. These methods attempt to select better sperm compared to classical methods of preparation such as swim-up and density gradient centrifugation (DGC). In this view, the aim of this study was the comparison of clinical outcomes of magnetic-activated cell separation (MACS) followed by DGC or DGC alone in infertile men undergoing intracytoplasmic sperm injection (ICSI).
View Article and Find Full Text PDFWe assessed the effect of vitamin E and vitamin B (Vit E & Vit B) and their combination on sperm functional parameters in the rat varicocele model. Male rats (n = 120) were divided into control (n = 30), sham (n = 30) and varicocele induction (n = 60) groups. After 2 months, 10 rats from each group were sacrificed to verify varicocele model.
View Article and Find Full Text PDFUnlabelled: BACKGROUND: Quercetin is a flavonoid with high reactive oxygen species (ROS) scavenging and ion chelating activity. It also enhances the activity of antioxidant enzymes and reduces enzymatic activity such as NADPH oxidase and NADH-dependent oxido-reductase. Tempol, as a superoxide dismutase mimetic agent, converts superoxide to less toxic hydrogen peroxide (HO), but cannot reduce highly toxic hydroxyl radicals in Fenton or Haber-Weiss reactions mediated with free iron or cupper.
View Article and Find Full Text PDFIntegrity of the sperm membrane, of which phosphatidyl serine (PS) plays a central role, is essential for fertilization. The externalisation of PS (EPS) occurs during capacitation and the acrosome reaction. EPS, from the inner to the outer membrane, is considered as a sign of early apoptosis.
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