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A procedure for testing potential inhibitors of human chorionic gonadotrophin activity in vivo

M Ryle, J Sage

    Journal of Reproduction and Fertility
    |September 1, 1980
    PubMed

    Insights

    A new in vivo method uses mouse ovaries to test human chorionic gonadotropin (hCG) inhibitors. Antiserum successfully blocked hCG activity for up to 24 hours, demonstrating the assay

    Area of Science:

    • Reproductive biology
    • Endocrinology
    • Assay development

    Background:

    • Human chorionic gonadotropin (hCG) is a crucial hormone in early pregnancy.
    • Developing reliable in vivo assays for hCG inhibitors is essential for reproductive health research.
    • Ovarian hormone-responsive alkaline phosphatase offers a potential biomarker for hCG activity.

    Purpose of the Study:

    • To establish and validate a novel in vivo procedure for screening potential inhibitors of hCG.
    • To utilize a hormone-responsive alkaline phosphatase in mouse ovaries as the basis for the assay.
    • To determine the efficacy of a standard antiserum in inhibiting hCG activity within a defined timeframe.

    Main Methods:

    • The study employed a procedure involving young mice with hormone-responsive alkaline phosphatase in their ovaries.
    • Mice received standard injections of an antiserum.
    • A subsequent injection of 2 i.u. of hCG was administered to assess the inhibitory effect.

    Main Results:

    • The developed procedure successfully demonstrated the inhibition of hCG activity in vivo.
    • The antiserum demonstrated a significant inhibitory effect on the hCG response.
    • Inhibition was observed even after an interval of up to 24 hours between antiserum and hCG administration.

    Conclusions:

    • A practical and effective in vivo assay for testing hCG inhibitors has been established.
    • The assay, based on ovarian alkaline phosphatase activity, shows promise for reproductive toxicology and drug development.
    • The findings support the potential of this method for evaluating substances that modulate hCG function.

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