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Related Experiment Videos

Prolactin secretion in chronic schizophrenia

F Brambilla, A Guastalla, A Guerrini

    Acta Psychiatrica Scandinavica
    |October 1, 1976
    PubMed
    Summary
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    This study found that schizophrenic patients have normal basal prolactin levels but enhanced responses to TRH stimulation. Dopamine agonist therapy significantly decreased prolactin levels in these patients.

    Area of Science:

    • Neuroendocrinology
    • Psychiatry

    Background:

    • Schizophrenia is a complex mental disorder.
    • Prolactin secretion is regulated by various factors, including dopamine.

    Purpose of the Study:

    • To investigate basal prolactin secretion and its response to stimuli in chronic hebephrenic schizophrenics.
    • To assess the effects of chlorpromazine and 2-Br-alpha-ergokryptine-mesilate on prolactin levels in schizophrenia.

    Main Methods:

    • Radioimmunological assay of prolactin levels.
    • Thyrotropin-releasing hormone (TRH) stimulation test.
    • Administration of chlorpromazine and 2-Br-alpha-ergokryptine-mesilate to patients.

    Main Results:

    • Patients exhibited normal basal prolactin levels.

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  • Significantly enhanced prolactin response to TRH stimulation was observed.
  • Chlorpromazine alone showed normal prolactin increases; combined therapy with 2-Br-alpha-ergokryptine-mesilate led to substantial decreases.

    • Conclusions:

    • The findings suggest a possible relative catecholamine deficiency in schizophrenia.
    • Dopamine agonist therapy effectively modulates prolactin levels in schizophrenic patients.