Abstract
A study of acute and subacute toxicity of cadmium ions [Cd(II)] was carried out on male Swiss mice and Sprague-Dawley rats with and without previous administration of zinc chloride. The LD50 of Cd(II) as cadmium sulfate (ip) was lower in animals previously given 10 mg/kg of zinc(II) chloride (sc). Factors such as animal weight variations, biochemical parameters, and accumulation patterns of Cd(II) and Zn(II) were taken into consideration when the subacute toxicity was evaluated.
Alteration of the activities of glutamic pyruvic transaminase (GPT) and of glutamic oxaloacetic transaminase (GOT) was observed in short-term-exposure (<6 h) cases. These alterations reverted to normal after 1 wk. The activity of alkaline phosphatase (ALP) and the concentrations of cholesterol and triglycerides in serum are also changed, especially so in the groups given CdSO4 alone. In the experimental groups treated with ZnCl2 prior to administration of cadmium, proteinuria was detected 5 wk after the treatment. Also at 5 wk, both Zn-treated and nontreated groups showed an abnormally low liver mass with respect to total body mass. Both Cd and Zn are retained preferentially in the liver but show also in the kidneys. If CdSO4 and ZnCl2 are given simultaneously, especially after 1 wk of treatment, Cd is accumulated in greater amounts in these organs when compared to the groups given only cadmium sulfate.
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Claverie, C., Corbella, R., Martín, D. et al. Protective effects of zinc on cadmium toxicity in rodents. Biol Trace Elem Res 75, 1–9 (2000). https://doi.org/10.1385/BTER:75:1-3:1
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DOI: https://doi.org/10.1385/BTER:75:1-3:1