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Antidotes for acute bismuth intoxication.

M A Basinger, M M Jones, S A McCroskey

    Journal of Toxicology. Clinical Toxicology
    |April 1, 1983
    PubMed
    Summary
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    Researchers investigated chelating agents as antidotes for bismuth poisoning in mice. Agents with sulfhydryl, aromatic hydroxy, or phosphonate groups were effective, with D-penicillamine showing the most promise.

    Area of Science:

    • Toxicology
    • Pharmacology
    • Medicinal Chemistry

    Background:

    • Bismuth compounds are used in medicine, but acute intoxication can occur.
    • Effective antidotes are needed to treat heavy metal poisoning.
    • Chelating agents are a potential therapeutic strategy for metal detoxification.

    Purpose of the Study:

    • To evaluate the efficacy of various chelating agents as antidotes for acute bismuth intoxication.
    • To identify specific chemical structures that confer effective bismuth chelation.
    • To compare the effectiveness of approved therapeutic agents against bismuth toxicity.

    Main Methods:

    • Acute bismuth intoxication was induced in a mouse model.
    • Nine different chelating agents with varying functional groups were administered.

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  • Animal survival rates and toxicological indicators were assessed post-treatment.

    • Main Results:

    • Chelating agents possessing sulfhydryl groups demonstrated significant efficacy.
    • Compounds with adjacent aromatic hydroxy groups were also effective antidotes.
    • Appropriately positioned phosphonate groups were identified as beneficial for chelation.
    • D-penicillamine, an approved therapeutic agent, emerged as the most effective antidote among those tested.

    Conclusions:

    • Specific chemical moieties, including sulfhydryl, aromatic hydroxy, and phosphonate groups, are crucial for effective bismuth chelation.
    • D-penicillamine represents a promising therapeutic option for managing acute bismuth intoxication.
    • Further research into structure-activity relationships can guide the development of novel bismuth antidotes.