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Human & Experimental Toxicology
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*Compound via MeSH
*Substance via MeSH
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*Bowel Movement
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*CALCIUM COMPOUNDS
*CALCIUM, ELEMENTAL
*COPPER, ELEMENTAL
*D-SORBITOL
*LEAD ACETATE
*LEAD, ELEMENTAL
*ZINC COMPOUNDS
*ZINC, ELEMENTAL
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Chelation in metal intoxication LI: Efficacy of amphipathic dithiocarbamates in mobilization of lead in the rat

SK Tandon

Industrial Toxicology Research Centre, Lucknow-226 001, India

S. Singh

Industrial Toxicology Research Centre, Lucknow-226 001, India

S. Prasad

Industrial Toxicology Research Centre, Lucknow-226 001, India

N-benzyl-D-glucamine dithiocarbamate (BG.DTC) and its analog, N-(4-methoxybenzyl)-D-glucamine dithiocarba mate (MeO-BG.DTC) which are effective chelators of cadmium were investigated for their efficacy to induce excretion of lead, to reduce tissue burden of lead and to reverse certain lead sensitive biochemical alterations in lead pre-exposed rats. These were quite effective in reducing hepatic and renal but not brain lead levels as reflected by the enhanced urinary and fecal excretion of lead and in partially restoring lead inhibited blood delta- aminolevulinic acid dehydratase activity. The introduc tion of a methoxy group at para-position of benzyl ring, unlike in case of cadmium, did not improve the lead chelating ability of the compound. The treatment with BG.DTC and MeO-BG. DTC caused depletion of endogen ous essential elements such as zinc, copper and calcium as evidenced by their enhanced excretion and decreased tissue contents which were more marked in animals treated with the latter.

Key Words: lead intoxication • chelating agents • dithiocarbamates • essential elements • rat

Human & Experimental Toxicology, Vol. 16, No. 10, 557-562 (1997)
DOI: 10.1177/096032719701601002
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