Mycoplasmas and in vitro fertilization

Area of Science:

• Reproductive medicine
• Microbiology
• In vitro fertilization

Background:

• Mycoplasmas are common causes of genitourinary infections.
• Ureaplasma urealyticum and Mycoplasma hominis are frequently isolated from semen.

Purpose of the Study:

• To investigate the prevalence of mycoplasma colonization in semen samples from patients undergoing in vitro fertilization (IVF).
• To assess the impact of mycoplasma colonization and sperm washing on semen parameters and fertilization.
• To determine the efficacy of sperm washing in eradicating Ureaplasma urealyticum and Mycoplasma hominis.

Main Methods:

• Analysis of 135 semen samples from patients attending an IVF clinic.
• Isolation and identification of mycoplasma species.
• Sperm washing procedures were performed on selected samples.
• Evaluation of sperm count, motility, morphology, and in vitro fertilization rates.

Main Results:

• Ureaplasma urealyticum colonized 39% of samples, and Mycoplasma hominis colonized 12%.
• Sperm washing eradicated Ureaplasma urealyticum in 71% of colonized samples but was less effective for Mycoplasma hominis.
• Mycoplasma colonization did not significantly affect sperm count, motility, morphology, or fertilization rates.

Conclusions:

• Mycoplasma colonization is prevalent in semen samples from IVF patients.
• Sperm washing is effective in removing Ureaplasma urealyticum but not Mycoplasma hominis.
• The presence of mycoplasmas in semen does not appear to significantly impair male fertility parameters or IVF outcomes.