Abstract
The Aim of this study was to evaluate the effects of bacteriospermia on human sperm parameters, nuclear protamines, DNA integrity and ICSI outcome in patients enrolled for ICSI treatment. 84 unselected couples consulting in infertility and obstetrics clinic and enrolled for ICSI treatment were included in this study. The semen specimens were screened bacteriologically; semen and sperm parameters were also evaluated according to WHO guidelines. DNA integrity, protamines concentration and protamine deficiency were estimated by TUNEL assay, AU-PAGE and Chromomycin (CMA3) respectively. The results of this study revealed that 34.52% of studied semen samples were infected with bacteria. The isolated bacteria were identified as Staphylococcus aureus, Staph. epidermidis, Staph. haemolyticus, Escherichia coli, Enterococcus faecalis and Streptococcus agalactiae. Bacteriospermia had a significant (p < .010) negative effect on sperm parameters; concentration, motility, progressive motility and chromatin condensation. Moreover, high DNA fragmentation with low P1 and P2 concentrations were noticed in infected patients in comparison to non-infected patients but non-significant. Also, the fertilization rate decreased significantly (p < .05) with infected patients. In conclusion: bacteriospermia has significant negative effect on sperm quality and fertilization rate in patients who underwent ICSI treatment.
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