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Related Experiment Videos

[Hormonal control of lactation].

T Aono1

  • 1Department of Obstetrics and Gynecology, University of Tokushima, School of Medicine.

Nihon Sanka Fujinka Gakkai Zasshi
|August 1, 1990
PubMed
Summary

This study explores how prolactin (PRL) and oxytocin (OXT) regulate lactation, including factors affecting milk production and release in mothers with endocrine disorders.

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Area of Science:

  • Endocrinology
  • Reproductive Biology
  • Lactation Physiology

Background:

  • Lactation initiation and maintenance involve complex hormonal regulation.
  • Prolactin (PRL) and oxytocin (OXT) are key hormones in the lactational process.
  • Endocrine disorders can significantly impact a mother's ability to lactate.

Purpose of the Study:

  • To elucidate the mechanisms of normal lactation.
  • To investigate the roles of PRL and OXT in lactation initiation and milk ejection.
  • To examine lactation in women with endocrine disorders and explore therapeutic interventions.

Main Methods:

  • Analysis of serum PRL levels during pregnancy and postpartum.
  • Assessment of PRL and OXT responses to suckling stimuli.
  • Evaluation of lactation in patients with prolactinomas and diabetes mellitus.

Main Results:

  • Sex steroid hormones inhibit PRL binding during pregnancy; suckling stimulates PRL release.
  • Oxytocin (OXT) is crucial for suckling-induced PRL increase and milk ejection.
  • Psychological stress can decrease OXT pulsatile release.
  • Poor lactation observed in women with prolactinomas and diabetes mellitus, potentially due to impaired PRL response.

Conclusions:

  • Lactation initiation is linked to suckling-induced PRL increase, modulated by OXT.
  • Factors like nipple stimulation, psychological stress, and endocrine disorders (prolactinomas, diabetes) can impair lactation.
  • Further understanding of these mechanisms may inform therapies for lactation support.

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