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Related Experiment Videos

Multifactorial regulation of prolactin secretion.

H A Zacur, G V Foster, J E Tyson

    Lancet (London, England)
    |February 21, 1976
    PubMed
    Summary

    The hypothalamus regulates prolactin release. Evidence suggests catecholamines and indolamines directly influence prolactin, potentially explaining endocrine disorders like galactorrhoea-amenorrhoea.

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    Acta paediatrica (Oslo, Norway : 1992)·2010

    Area of Science:

    • Neuroendocrinology
    • Reproductive Endocrinology

    Background:

    • The hypothalamus inhibits prolactin release from the anterior pituitary.
    • The existence of specific peptide hypothalamic prolactin-regulating factors is unconfirmed.
    • Catecholamines and indolamines are implicated in direct prolactin release modulation.

    Purpose of the Study:

    • To explore the role of hypothalamic factors in prolactin regulation.
    • To investigate the direct effects of catecholamines and indolamines on prolactin release.
    • To understand the pathogenesis of endocrine diseases linked to hypothalamic-pituitary dysfunction.

    Main Methods:

    • Review of existing neuroendocrine literature.
    • Analysis of evidence for hypothalamic influence on prolactin.
    • Examination of the role of neurotransmitters in prolactin secretion.

    Main Results:

    • The hypothalamus exerts inhibitory control over prolactin secretion.
    • Direct evidence for peptide hypothalamic prolactin-regulating factors is lacking.
    • Significant evidence supports the direct action of catecholamines and indolamines on prolactin release.

    Conclusions:

    • Hypothalamic regulation of prolactin is primarily inhibitory.
    • Catecholaminergic and indolaminergic pathways are key modulators of prolactin release.
    • Dysregulation of these pathways may underlie conditions such as galactorrhoea-amenorrhoea.

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