Abstract
Male Wistar rats received a combination of 25 ppm PbCl2 and 5 ppm CdCl2 in drinking water at different developmental stages. Zn and Cu levels of incisors, molars, epiphyses, diaphyses and kidney cortex were recorded by atomic absorption spectrophotometry. Pb‐Cd uptake in rats, either via the mother through placenta or mammae, or directly in growing rats resulted in an overall decrease in Zn content of epiphyses. This may cause a decreased growth rate. There was a significant negative correlation between Pb and Zn in epiphyses. In addition, an increase in the Zn level of kidney cortex was found in the animals receiving Pb‐Cd from weaning until sacrifice, and through all stages there was a significant positive correlation between Zn and Cu in this tissue. Pb‐Cd administration during pregnancy and/or lactation resulted in an increased storage of Cu in hard as well as soft tissues of the offspring. This storage did not take place if Pb‐Cd were given after termination of the lactation period. There was a posit...
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