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Related Experiment Videos

Testicular function in varicocele.

T Pasqualini, H Chemes, R Coco

    International Journal of Andrology
    |December 1, 1980
    PubMed
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    Varicocele can affect sperm production, but high testicular testosterone levels, despite altered Leydig cell function, suggest spermatogenesis failure isn't due to low testosterone. Luteinizing hormone (LH) stimulation may compensate.

    Area of Science:

    • Reproductive Endocrinology
    • Andrology
    • Urology

    Background:

    • Varicocele is a common cause of male infertility.
    • Leydig cell function and testosterone production are crucial for spermatogenesis.

    Purpose of the Study:

    • To investigate testicular testosterone levels and their relationship with spermatogenesis in patients with varicocele.
    • To determine if impaired Leydig cell function contributes to infertility in varicocele.

    Main Methods:

    • Evaluated serum testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), sperm count, and testicular histology in 17 varicocele patients.
    • Measured intratesticular testosterone concentration.

    Main Results:

    • Testicular testosterone was normal to high (mean 906 +/- 723 ng/g).

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  • Serum testosterone was mostly normal; LH was elevated in 50% of patients.
  • Testicular damage varied and correlated with sperm analysis, with higher testicular testosterone in severe lesions.
  • Conclusions:

    • Leydig cell function is partially altered in varicocele but compensated by LH stimulation.
    • Spermatogenesis failure in varicocele is not primarily caused by low testosterone levels.