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Schedule-induced chronic hypertension.

J L Fak, M Tang, S Forman

    Psychosomatic Medicine
    |July 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Intermittent feeding schedules induced excessive drinking (polydipsia) and chronic hypertension in rats. These findings suggest a psychosomatic link between behavioral patterns and cardiovascular disease.

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    Area of Science:

    • Physiology
    • Behavioral Neuroscience

    Background:

    • Intermittent-feeding schedules can induce abnormal behaviors.
    • The relationship between these behaviors and physiological changes like hypertension requires further investigation.

    Purpose of the Study:

    • To investigate the effects of intermittent-feeding schedules on fluid intake and blood pressure in rats.
    • To explore the potential psychosomatic link between induced polydipsia and chronic hypertension.

    Main Methods:

    • Rats were assigned to either an intermittent-feeding schedule (pellets every 90 seconds) or a single daily feeding (control).
    • All rats underwent mononephrectomy and were initially given saline, later switched to water.
    • Fluid intake and blood pressure were monitored throughout the experiments.

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    Main Results:

    • Experimental rats developed schedule-induced polydipsia.
    • A significant difference in blood pressure emerged between groups, persisting terminally.
    • Cardiac weight increased, and minor kidney pathology was observed in the experimental group.

    Conclusions:

    • Intermittent-feeding schedules can induce polydipsia and chronic hypertension in rats.
    • The findings support the concept of psychosomatic counterparts in behaviorally induced disorders.
    • Physiological changes observed are consistent with essential hypertension.