Antagonism between cadmium and magnesium: a possible role of magnesium in therapy of cadmium intoxication.

One of the important mechanisms of cadmium (Cd) toxicity is its interactions with bioelements, including magnesium (Mg). Exposure to Cd leads to disturbances in Mg metabolism in the organism, while Mg supplementation has an adverse effect on Cd absorption, accumulation and toxicity. According to the available results, which indicate a protective role of Mg against Cd toxicity, it remains to be seen whether magnesium may influence the important unsolved problem of Cd intoxication therapy.

Effect of magnesium pretreatment on reduced glutathione levels in tissues of mice exposed to acute and subacute cadmium intoxication: a time course study.

The study was designed to investigate the role of magnesium (Mg) pretreatment on reduced glutathione (GSH) levels in kidney, liver and testis of mice intoxicated with cadmium (Cd). Animals were divided into four groups: I--controls, II--Cd group: mice intoxicated with Cd, III--Mg+Cd group: mice given Mg 1 h before Cd, and IV--Mg group: mice given only Mg. In acute time--response studies, the single oral dose of Cd was 20 mg Cd/kg b.

Metal pollutants and bioelements: retrospective of interactions between magnesium and toxic metals.

Protection from heavy metals is a problem that has not been solved in a satisfactory manner so far. Usage of complexing agents in therapy of exposed workers results in both favorable outcome and recognized adverse effects. In the field of environmental protection, they cannot be used in practice, meaning that the risk of escape of metal pollutant from factory premises and their attack on the environnement remains present.

Contribution to interaction between magnesium and toxic metals: the effect of prolonged cadmium intoxication on magnesium metabolism in rabbits.

The results obtained up to now indicate that increased intake of some heavy metals causes disorder of bioelements metabolism leading to their blood and organs decrease and higher elimination via the urine. As to lead and magnesium, our investigations indicated that the reaction is reversible and that increased intake of Mg eliminates Pb via urine. Some other findings suggest similar relations between Mg and certain heavy metals, thus pointing to significant role of Mg in toxicology of heavy metals and announcing a new chapter in the toxicology of metals entitled 'Mg in professional and ecotoxicology'.

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.