Effect of chelating agent structure on the mobilization of cadmium from intracellular deposits

Pramod K. Singh, Mark M. Jones*, Shirley G. Jones, Glen R. Gale, Loretta M. Atkins, Alayne B. Smith, Robert Bulman

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)


    An examination of the efficacy of several structural types of chelating agents in the removal of cadmium from its intracellular deposits in mouse liver and kidneys reveals that of the structural types examined, only dithiocarbamates and a vicinal dithiol were able to mobilize cadmium from such intracellular sites. Esters of L-cysteine, a macrocy-clic thioether, and a disulfide of a dithiocarbamate were unable to cause any appreciable decrease in either renal or hepatic cadmium levels. Charged groups such as carboxylic acid groups reduce the efficacy as well as the toxicity of the structural types that can otherwise mobilize such cadmium. It was also found that the administration of a cadmium-binding polymer ip leads to only a very slight net excretion of cadmium, while the po administration of this polymer leads to no net additional cadmium excretion. Of the compounds newly reported here, some are approximately equal in cadmium-mobilizing efficacy to the most effective of previously reported compounds.

    Original languageEnglish
    Pages (from-to)501-518
    Number of pages18
    JournalJournal of Toxicology and Environmental Health
    Issue number4
    Publication statusPublished - 1 Dec 1989

    Bibliographical note

    Funding Information:
    We wish to acknowledge with thanks the support of this work by NIH grant ES-02638 (M. M. Jones), by the Veterans Administration (G. R. Gale), and by VA-NCI Interagency Agreement IGA 101(534)P-77014 (G. R. Gale).


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