Sperm motility changes after coincubation with various uropathogenic microorganisms: an in vitro experimental study

Area of Science:

• Reproductive biology
• Microbiology
• Urology

Background:

• Semen quality is crucial for male fertility.
• Uropathogenic microorganisms can potentially affect semen parameters.

Purpose of the Study:

• To investigate the relationship between semen motility and various uropathogenic microorganisms.
• To determine if microorganism concentration correlates with decreased sperm motility.

Main Methods:

• Semen specimens were incubated with a range of uropathogenic microorganisms (e.g., E. coli, P. aeruginosa, S. aureus, C. albicans).
• Sperm motility was assessed at 2, 4, and 6 hours post-incubation.
• Controls included uninfected semen suspensions.

Main Results:

• A negative impact on sperm motility was observed but was not directly correlated with microorganism concentration.
• Deleterious effects on motility were prominent only above a certain concentration threshold.
• No significant correlation between motility and bacteria concentration was found, except for E. aerogenes at 2 hours.

Conclusions:

• Sperm function impairment is likely not due to direct sperm-bacteria interaction.
• High bacterial concentrations may impair sperm motility by altering the seminal environment or consuming essential resources.
• Further research is needed to elucidate the precise mechanisms of microbial impact on sperm function.