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Related Experiment Videos

D-1 dopamine receptor stimulation elevates plasma prolactin levels.

C F Saller, A I Salama

    European Journal of Pharmacology
    |March 11, 1986
    PubMed
    Summary

    Dopamine D-1 receptor stimulation increases prolactin secretion. Blocking these D-1 receptors with an antagonist prevented this increase, suggesting a key role for D-1 dopamine receptors in regulating prolactin levels.

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    Area of Science:

    • Neuroendocrinology
    • Pharmacology

    Background:

    • Dopamine plays a crucial role in regulating hormone secretion.
    • The specific role of D-1 dopamine receptors in prolactin regulation requires further elucidation.

    Purpose of the Study:

    • To investigate the effect of D-1 dopamine receptor stimulation and blockade on plasma prolactin concentrations.
    • To determine if D-1 receptor activity influences prolactin secretion.

    Main Methods:

    • Administration of SKF 38393, a selective D-1 dopamine receptor agonist.
    • Administration of SCH 23390, a selective D-1 dopamine receptor antagonist.
    • Measurement of plasma prolactin concentrations following drug administration.

    Main Results:

    • SKF 38393 caused a dose-dependent increase in plasma prolactin.
    • SCH 23390 administration led to a trend of decreased prolactin levels.
    • Low doses of SCH 23390 blocked the prolactin-elevating effects of SKF 38393.

    Conclusions:

    • D-1 dopamine receptor stimulation promotes prolactin secretion.
    • D-1 dopamine receptors are implicated in the control of prolactin release.

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