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Related Experiment Videos

[Kinin forming system and ovulation].

M Seki

    Nihon Sanka Fujinka Gakkai Zasshi
    |June 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    The kinin-forming system, specifically plasma prekallikrein, plays a crucial role in ovulation. Its levels decrease during ovulation, indicating consumption and acceleration within the ovary.

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    Area of Science:

    • Reproductive biology
    • Biochemistry
    • Endocrinology

    Context:

    • Ovulation is a complex reproductive process.
    • The kinin-forming system is involved in various physiological processes.
    • Previous research has not fully elucidated the kinin-forming system's role in ovulation.

    Purpose:

    • To investigate the role of the kinin-forming system in ovulation.
    • To determine the effect of gonadotropins and sex steroid hormones on plasma prekallikrein levels.
    • To assess changes in plasma prekallikrein during the estrus cycle.

    Summary:

    • Plasma prekallikrein levels decreased significantly in superovulated rats after PMS and hCG injections, with the lowest level at 33.8% 39 hours post-PMS.
    • Aprotinin, an inhibitor, suppressed superovulation in prepubertal rats, indicating the kinin system's involvement.

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  • Sex steroid hormones did not affect plasma prekallikrein in oophorectomized mice, but levels were lower during the estrus cycle in mature mice compared to oophorectomized controls.
  • These findings demonstrate plasma prekallikrein consumption and kinin system activation in the ovary during ovulation.

    • Impact:

    • Provides novel insights into the biochemical mechanisms regulating ovulation.
    • Highlights the kinin-forming system as a potential target for reproductive interventions.
    • Advances the understanding of reproductive physiology and endocrinology.