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Related Experiment Videos

Sex hormone-binding globulin changes with androgen replacement.

S R Plymate, J M Leonard, C A Paulsen

    The Journal of Clinical Endocrinology and Metabolism
    |September 1, 1983
    PubMed
    Summary

    Testosterone (T) and human chorionic gonadotropin (hCG) treatments effectively increase free testosterone (free T) in hypogonadal men. However, changes in sex hormone-binding globulin (SHBG) vary based on the treatment type.

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    Area of Science:

    • Endocrinology
    • Reproductive Medicine
    • Andrology

    Background:

    • Elevated sex hormone-binding globulin (SHBG) is common in testicular insufficiency.
    • Understanding SHBG and free testosterone (free T) changes after androgen therapy is crucial.

    Purpose of the Study:

    • To investigate the impact of testosterone enanthate and hCG on SHBG and free T levels.
    • To compare treatment effects in normal men versus patients with Klinefelter's syndrome and hypogonadotropic hypogonadism.

    Main Methods:

    • Studied five normal men and five Klinefelter's syndrome patients treated with testosterone enanthate.
    • Evaluated five normal men and five hypogonadotropic hypogonadism patients treated with hCG.
    • Measured serum total T, free T, and SHBG levels before and after three months of treatment.

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    Main Results:

    • Both testosterone and hCG significantly increased free T in all patient groups and normal men.
    • SHBG decreased in men treated with testosterone but remained unchanged or increased with hCG.
    • Free T levels surpassed normal basal levels following both treatment regimens.

    Conclusions:

    • Testosterone and hCG therapy effectively raises free T in hypogonadal men.
    • The effect on SHBG differs between testosterone and hCG treatments.
    • Treatment choice influences SHBG normalization and free T dynamics.