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[The intragonadic cybernins (author's transl)].

P Franchimont

    Journal De Gynecologie, Obstetrique Et Biologie De La Reproduction
    |January 1, 1980
    PubMed
    Summary

    The testis and ovary produce regulatory peptides called cybernins. These substances, including inhibitors and hormones like inhibin, control reproductive functions, steroidogenesis, and gametogenesis.

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    Area of Science:

    • Reproductive biology
    • Endocrinology
    • Molecular biology

    Context:

    • The testis and ovary produce peptidic substances regulating reproductive functions.
    • Several cybernins are identified, including oocyte maturation inhibitor (OMI), FSH receptor binding inhibitor (FSH RBI), luteinization inhibitor (LI), inhibin, LH receptor binding inhibitor (LH RBI), and gonadocrinins.
    • These substances act at the gonad level to influence various reproductive processes.

    Purpose:

    • To identify and describe peptidic substances (cybernins) produced by the gonads.
    • To elucidate the roles of specific cybernins in regulating reproductive functions.
    • To highlight the potential impact of these substances on steroidogenesis and gametogenesis.

    Summary:

    • Granulosa cells secrete OMI and FSH RBI, influencing oocyte maturation and follicle development.
    • Inhibin, produced by Sertoli and granulosa cells, inhibits FSH secretion and spermatogonial mitosis.
    • LH RBI in the corpus luteum may be involved in luteolysis, while gonadocrinins modulate gonadotropin release and receptor expression.

    Impact:

    • Understanding cybernins is crucial for comprehending reproductive regulation.
    • These findings provide insights into potential targets for reproductive therapies.
    • Further research into the biochemical structures and interrelationships of cybernins is warranted.

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