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Cardiovascular effects of amphepramone

L Safta, B Cuparencu

    Physiologie (Bucarest)
    |April 1, 1978
    PubMed
    Summary

    Amphepramone causes dose-dependent blood pressure changes and heart rhythm disturbances in animals. Central administration triggers a pressor response, while peripheral effects include vasodilation and altered heart rate.

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    Area of Science:

    • Pharmacology
    • Cardiovascular Physiology
    • Neuropharmacology

    Background:

    • Amphepramone's cardiovascular effects require detailed investigation.
    • Understanding its mechanisms is crucial for assessing potential therapeutic or toxicological impacts.

    Purpose of the Study:

    • To investigate the cardiovascular and respiratory effects of amphepramone in animal models.
    • To elucidate the mechanisms underlying amphepramone-induced blood pressure and heart rate alterations.

    Main Methods:

    • Intravenous and intracerebroventricular administration of amphepramone in dogs.
    • Administration in rats and rabbits to assess dose-dependent effects.
    • Monitoring of blood pressure, heart rate, respiratory movements, and electroencephalogram (EEG) tracings.

    Main Results:

    • Intravenous amphepramone caused dose-related hypotension via peripheral vasodilation.
    • Intracerebroventricular administration induced hypertension due to catecholamine release and alpha-adrenergic receptor activation.
    • Low doses caused sinus tachycardia; higher doses led to bradycardia, arrhythmias, and potentially fatal cardiac events.
    • Amphepramone depressed respiratory movements and EEG activity at higher doses.

    Conclusions:

    • Amphepramone exhibits complex cardiovascular effects, acting both peripherally and centrally.
    • Its central action involves the sympathetic nervous system, while peripheral effects are vasodilatory.
    • Significant dose-dependent cardiac and respiratory depression highlights potential safety concerns.

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