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Related Experiment Videos

Sex differences in drug evaluations.

N J Horrom, C C Brown

    Journal of Pharmaceutical Sciences
    |May 1, 1977
    PubMed
    Summary

    Males and females show distinct psychomotor performance and physiological responses to fenfluramine and dextroamphetamine. Females exhibited greater drug-induced changes in some measures compared to males.

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    Area of Science:

    • Psychopharmacology
    • Neuroscience
    • Human Physiology

    Background:

    • Sex-based differences in drug response are increasingly recognized.
    • Understanding these differences is crucial for personalized medicine and drug development.

    Purpose of the Study:

    • To investigate sex differences in psychomotor performance and physiological responses to fenfluramine and dextroamphetamine.
    • To compare the magnitude of drug-induced changes between males and females.

    Main Methods:

    • A double-blind, repeated measures design was employed with 20 healthy subjects (10 males, 10 females).
    • Subjects underwent psychomotor testing, affect checklists, and physiological measurements predrug and at multiple time points postadministration of fenfluramine, dextroamphetamine, combined doses, or placebo.
    • Data were analyzed to identify sex-based differences in baseline performance and drug-induced changes.

    Main Results:

    • Significant sex differences were observed in baseline performance on five psychomotor tasks and two physiological measures, with males generally performing at higher levels.
    • Females showed greater postdrug changes than males in three psychomotor tasks and two physiological measures, indicating differential drug effects.
    • Both fenfluramine and dextroamphetamine, individually and in combination, elicited sex-specific responses.

    Conclusions:

    • Sex is a significant biological factor influencing psychomotor performance and physiological responses to fenfluramine and dextroamphetamine.
    • Females may be more sensitive to the acute effects of these drugs, as evidenced by greater change scores in certain domains.
    • These findings highlight the importance of considering sex in psychopharmacological research and clinical applications.

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