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[Interferences between prolactin and ovarian function (author's transl)].

L J Van Bogaert

    La Nouvelle Presse Medicale
    |January 14, 1978
    PubMed
    Summary

    Prolactin (PRL) levels significantly impact reproductive function, affecting progesterone secretion and ovulation. High PRL can cause amenorrhoea, while bromocriptine aids faster pituitary-ovarian recovery post-lactation.

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    Area of Science:

    • Endocrinology
    • Reproductive Medicine
    • Gynecology

    Background:

    • Prolactin (PRL) plays a complex role in pituitary-ovarian function.
    • Hyperprolactinemia can disrupt normal reproductive cycles, but its effects vary.
    • The relationship between PRL levels, galactorrhoea, amenorrhoea, and ovarian function requires clarification.

    Purpose of the Study:

    • To investigate the relationship between prolactin levels and various aspects of female reproductive function.
    • To determine the impact of hyperprolactinemia on ovulation, luteal phase, and menstrual cycles.
    • To compare the effects of natural and bromocriptine-induced weaning on pituitary-ovarian function.

    Main Methods:

    • Observational study analyzing prolactin levels in relation to reproductive parameters.
    • Assessment of ovarian function, including progesterone secretion, ovulation, and estrogenic activity.
    • Comparison of pituitary-ovarian function recovery after natural versus bromocriptine-assisted weaning.

    Main Results:

    • Hypoprolactinemic agents demonstrate a dose-dependent decrease in PRL, proportionally affecting progesterone secretion.
    • Hyperprolactinemic substances can cause luteal deficiency, with inconsistent effects on pituitary-ovarian function.
    • High PRL levels are often associated with hypo-estrogenic amenorrhea and diminished gonadotropic function, though not always with galactorrhoea.
    • Bromocriptine-induced weaning accelerates the return of pituitary-ovarian function compared to natural weaning.

    Conclusions:

    • Prolactin levels are closely linked to progesterone secretion and luteal function.
    • Amenorrhea-galactorrhea syndrome is characterized by elevated PRL and suppressed ovarian/gonadotropic function.
    • Bromocriptine offers a more efficient method for restoring reproductive function after lactation cessation.

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