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Related Experiment Videos

Pipradrol-induced hyperthermia in the rabbit.

S F Small, R M Quock, M H Malone

    Pharmacological Research Communications
    |September 1, 1984
    PubMed
    Summary

    Pipradrol causes a dose-dependent fever in rabbits. This effect is reduced by certain drugs but intensified by others, suggesting involvement of specific brain receptors.

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    Pharmacology, biochemistry, and behavior·2001

    Area of Science:

    • Pharmacology
    • Neuroscience
    • Physiology

    Background:

    • Pipradrol is a stimulant drug.
    • Hyperthermia is an elevated body temperature.
    • Understanding drug-induced hyperthermia mechanisms is crucial for safety and therapeutic development.

    Purpose of the Study:

    • To investigate the pharmacological mechanisms underlying pipradrol-induced hyperthermia in rabbits.
    • To identify specific receptor systems involved in this thermoregulatory response.

    Main Methods:

    • Intravenous administration of pipradrol to rabbits.
    • Dose-response assessment of hyperthermic effects.
    • Evaluation of drug effects following pretreatment with various receptor antagonists and agonists.
    • Administration of agents via intravenous and intracerebroventricular routes.

    Main Results:

    • Pipradrol induced a dose-dependent increase in body temperature in rabbits.
    • Pretreatment with chlorpromazine, phenoxybenzamine, and BE-2254 (intravenous or intracerebroventricular) significantly reduced pipradrol-induced hyperthermia.
    • Cyproheptadine and atropine significantly potentiated the hyperthermic effect.
    • Haloperidol, pimozide, diphenhydramine, and pentobarbital did not significantly alter the response.

    Conclusions:

    • Pipradrol-induced hyperthermia in rabbits involves the activation of central alpha-adrenergic receptors.
    • The hyperthermic effect appears to be enhanced by the blockade of serotonergic or cholinergic receptors.
    • These findings elucidate key neurochemical pathways modulating stimulant-induced thermoregulation.

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