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[Peripheral effects of prolactin in reproductive function. II. Female reproductive function]
B Leroy-Martin1, M Bouhdiba, P Saint Pol
1Laboratoire d'Histologie, Embryologie et Biologie de la Reproduction, Faculté de Médecine, Lille.
Summary
Prolactin (PRL) is vital for female reproduction, aiding follicle and oocyte maturation. However, high PRL levels can disrupt these processes and impact fetal osmoregulation.
Area of Science:
- Reproductive Endocrinology
- Hormone Biology
Context:
- Prolactin (PRL) plays a critical role in female reproductive functions.
- Physiological PRL concentrations are essential for proper follicular maturation, oocyte development, and corpus luteum function.
Purpose:
- To elucidate the multifaceted roles of prolactin in female reproductive physiology.
- To investigate the mechanisms by which prolactin influences reproductive hormones and receptors.
Summary:
- Prolactin, acting via prolactin receptors on granulosa cells, supports progesterone production by inhibiting catabolism and maintaining LH and estradiol receptors.
- Elevated prolactin levels may impair follicular maturation by inhibiting estrogen biosynthesis and stimulating factors that inhibit oocyte maturation.
- High PRL concentrations in amniotic fluid and its production by decidualizing endometrial cells suggest a role in fetal osmoregulation.
Impact:
- Understanding prolactin's dual role in reproduction is crucial for diagnosing and treating infertility and pregnancy-related complications.
- This research highlights prolactin's significance beyond pituitary function, extending to endometrial and fetal physiology.