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Related Experiment Videos

Immediate decrease by hydrocortisone of the plasma half-life of antipyrine.

A Breckenridge, C W Burke, D S Davies

    British Journal of Pharmacology
    |February 1, 1973
    PubMed
    Summary
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    Hydrocortisone infusion rapidly shortens antipyrine

    Area of Science:

    • Pharmacology
    • Drug Metabolism
    • Endocrinology

    Background:

    • Drug-metabolizing enzymes, primarily in the liver, are often induced by external agents.
    • Known enzyme inducers typically require days to weeks to alter drug metabolism rates.
    • Hydrocortisone is a corticosteroid hormone with known physiological roles.

    Purpose of the Study:

    • To investigate the immediate effect of hydrocortisone infusion on antipyrine elimination in humans.
    • To compare the effects of hydrocortisone on drug metabolism in humans and dogs.
    • To explore potential mechanisms behind observed changes in drug metabolism.

    Main Methods:

    • Administered hydrocortisone infusion to human subjects.
    • Measured plasma half-life and distribution volume of antipyrine.

    Related Experiment Videos

  • Conducted in vitro drug oxidation studies using dog liver samples.

    • Main Results:

    • Hydrocortisone infusion caused an immediate decrease in antipyrine plasma half-life in humans.
    • No significant changes were observed in antipyrine's volume of distribution or hydrocortisone levels.
    • Similar antipyrine half-life changes were seen in dogs, but in vitro liver studies showed no induction.

    Conclusions:

    • Hydrocortisone exerts an immediate effect on antipyrine elimination in humans, distinct from typical enzyme induction.
    • The rapid action suggests a mechanism beyond the delayed induction of hepatic drug-metabolizing enzymes.
    • Further research is needed to elucidate the precise mechanism of hydrocortisone's effect on drug metabolism.