Spermatozoal immobilization ability and virulence genes of Staphylococcus aureus isolated from the semen of infertile men

To investigate the impact of Staphylococcus aureus from infertile men on sperm motility and the relationship between virulence genes and the activity of spermatozoal immobilization.We collected 60 strains of non-repeated Staphylococcus aureus from the semen of 589 infertile males and analyzed the influence of Staphylococcus aureus on sperm motility using the computer-aided sperm analysis system. We selected the strains that apparently decreased sperm motility and detected their virulence genes by PCR.Sperm motility was significantly decreased in 17 of the 60 strains of Staphylococcus aureus (P 0.05).Infections of Staphylococcus aureus in male reproductive system can lead to the decrease of sperm motility, which may be associated with the Staphylococcus complement inhibitor encoding gene scn.