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Chelation of cadmium with BAL and DTPA in rats

Nature volume 287, pages 871–872 (1980)Cite this article

Abstract

Cadmium is unique among non-essential metals in several of its toxicological effects because of its long biological half life, slow excretion and delayed action on the kidneys1. Although cadmium poisoning in humans is uncommon, there are reports of chronic cadmium poisoning in workmen2–4 and also in others in certain polluted areas5,6. At present there are no suitable methods either to measure the body burden of cadmium or to treat cadmium poisoning7. The therapeutic effects of various chelating agents including 2,3-dimercaptopropanol (BAL) and its soluble glycosides have been studied without much success in acute cadmium intoxication8–11. However, those studies were done before anything was known of the specific binding of cadmium to metallothionein, an intracellular low molecular weight protein12. The potential role of this protein in the detoxification and toxicity of metals has been reviewed recently13,14. The induced synthesis of metallothionein has a marked effect on the pharmacokinetics of cadmium and other divalent metals15,16. Thus it is important to consider the intracellular binding of cadmium with metallothionein in developing a suitable chelation therapy for chronic exposure to cadmium17. The in vivo chelation of cadmium with BAL or BAL and diethylenetriamine pentaacetic acid (DTPA) from rats exposed to cadmium is reported here.

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  1. Department of Pathology, Health Sciences Centre, University of Western Ontario, London, Ontario, N6A 5C1, Canada

    M. George Cherian

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  1. M. George Cherian
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Cherian, M. Chelation of cadmium with BAL and DTPA in rats. Nature 287, 871–872 (1980). https://doi.org/10.1038/287871a0

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