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Asymptomatic bacteriospermia in infertile men

C E Swenson, A Toth, C Toth

    Andrologia
    |January 1, 1980
    PubMed
    Summary
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    Semen analysis in 109 men revealed bacteria in all samples, with 63.3% harboring anaerobic organisms. Several identified bacteria are known to be spermicidal, suggesting a link between semen flora and male infertility.

    Area of Science:

    • Microbiology
    • Urology
    • Reproductive Medicine

    Background:

    • Microorganisms in semen can impact male fertility.
    • Understanding the composition of semen microbiota is crucial for infertility diagnostics.

    Purpose of the Study:

    • To investigate the aerobic and anaerobic bacterial flora in semen samples from men attending an infertility clinic.
    • To identify specific microorganisms with potential spermicidal activity in infertile men.

    Main Methods:

    • Semen samples from 109 men were cultured for aerobic and anaerobic bacteria.
    • Bacterial identification and quantification were performed.
    • In vitro spermicidal properties of isolated organisms were considered.

    Main Results:

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    • All 109 semen specimens contained microorganisms; 107 had two or more species.
    • Anaerobic organisms were detected in 63.3% of the samples.
    • Spermicidal bacteria like Streptococcus, Proteus vulgaris, and Escherichia coli were frequently isolated.

    Conclusions:

    • The presence of diverse bacterial flora, including anaerobic organisms, is common in semen of men with infertility.
    • Certain bacterial species with in vitro spermicidal effects may contribute to male infertility.
    • Further research is needed to determine the specific role and threshold of microbial load in semen affecting fertility and potential links to gynecologic infections.