Compared effects of high oral Mg supplements and of EDTA chelating agent on chronic lead intoxication in rabbits.

Our previous experiments showed that excessive oral Mg intake has beneficial effects in chronic Pb poisoning, inducing decrease of Pb body burden and its increased elimination via urine. The aim of this work was to investigate and to compare the effect of Mg on urinary Pb elimination with the effect of calcium-disodium edetate (CaNa2EDTA)--chelating agent currently used in therapy of chronic Pb intoxication. Besides, under the same experimental conditions, biochemical parameters protoporphyrin IX (ppIX), zinc protoporphyrin (Znpp) and delta-aminolevulinic acid (ALA) were determined.