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Related Experiment Videos

Testicular function and glycemic control in diabetic men. A controlled study.

D J Handelsman, A J Conway, L M Boylan

    Andrologia
    |September 1, 1985
    PubMed
    Summary

    Insulin-dependent diabetic men show impaired testicular function, including reduced sperm output and elevated LH/FSH levels. This dysfunction is linked to glycemic control and affects the hypothalamic-pituitary-testicular axis.

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    Area of Science:

    • Endocrinology
    • Reproductive Medicine
    • Diabetology

    Background:

    • Insulin-dependent diabetes mellitus (IDDM) can affect various bodily functions.
    • Testicular function is crucial for male reproductive health.
    • Previous studies suggest potential links between diabetes and male infertility.

    Purpose of the Study:

    • To investigate testicular function in men with IDDM.
    • To assess the relationship between glycemic control and reproductive hormone levels.
    • To determine the impact of diabetes on spermatogenesis and the hypothalamic-pituitary-testicular axis.

    Main Methods:

    • Comparative study of 28 insulin-dependent diabetic men and 119 age-matched controls.
    • Assessment of testicular volume, semen parameters (volume, sperm count, motility).

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  • Measurement of plasma luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels.
  • Correlation analysis with glycosylated hemoglobin (GHb) levels.

    • Main Results:

    • Diabetic men exhibited reduced testicular volume, semen volume, and sperm output.
    • Elevated plasma LH and FSH levels were observed in diabetic individuals.
    • Impotence and reduced semen volume were more prevalent in long-standing, complicated diabetes.
    • GHb levels positively correlated with plasma LH, but no direct correlation with spermatogenesis was found.

    Conclusions:

    • The hypothalamic-pituitary-testicular axis is impaired in insulin-dependent diabetic men.
    • This impairment is partly related to the degree of preceding glycemic control.
    • Dysfunction occurs at multiple levels of the axis, primarily impacting spermatogenesis.