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Related Experiment Videos

Bacterial risk and sperm cryopreservation.

R Levy1, F Grattard, I Maubon

  • 1Laboratoire de Biologie de la Reproduction, Hôpital Nord, 42055 Saint-Etienne, France. rachel.levy@chu-st-etienne.fr

Andrologia
|October 2, 2004
PubMed
Summary

French guidelines for sperm cryopreservation lack bacterial screening. This study found semen cultures are useful, identifying pathogens like Ureaplasma urealyticum and demonstrating methods to remove them before assisted reproductive techniques.

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Area of Science:

  • Reproductive Medicine
  • Microbiology
  • Urology

Background:

  • Current French guidelines for sperm cryopreservation focus on viral screening only.
  • Bacterial pathogens in semen are not routinely screened for, potentially impacting fertility treatments.
  • There is a need to evaluate the risk of bacterial semen infection and develop mitigation strategies.

Purpose of the Study:

  • To assess the prevalence of bacterial pathogens in semen samples undergoing cryopreservation.
  • To evaluate a strategy for reducing microbial contamination in cryopreserved semen.
  • To determine the effectiveness of semen culture alongside cryopreservation.

Main Methods:

  • Ninety-six patients undergoing sperm cryopreservation had simultaneous semen cultures performed.

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  • Patients were categorized based on semen culture results: negative, positive for saprophytic agents, or positive for pathogenic agents.
  • A discontinuous gradient selection method was used to remove bacteria from positive samples.

    • Main Results:

    • 80.2% of semen cultures were negative.
    • 9.4% showed saprophytic bacterial growth, and 10.4% revealed pathogenic agents.
    • For patients with Ureaplasma urealyticum, gradient selection successfully removed bacteria from cryopreserved samples.

    Conclusions:

    • Semen culture concurrent with cryopreservation is valuable for identifying bacterial contamination.
    • Microbial agents, such as Ureaplasma urealyticum, can be effectively removed from semen before use in assisted reproductive techniques.
    • Implementing routine semen cultures can enhance the safety and efficacy of sperm cryopreservation and subsequent fertility treatments.