Abstract
Male ICR mice were either given water containing Cd at a level of 192–200 ppm for 45 days (ingestion group), or were injected subcutaneously once a week with Cd (1 mg/kg) as CdCl2 for 7 weeks (injection group). The control group was given Cd-free water. In both Cd groups, the hematocrit and hemoglobin values did not change markedly. In the ingestion group, the Fe concentration decreased greatly in the liver, kidney, spleen, and duodenum. These decreases may be due to depression of Fe absorption from the intestine. In the injection group, Fe increased in the liver, spleen, and duodenum, although it decreased in the kidney. By Sephadex G-200 gel filtration, Fe-proteins in the hepatic supernatants were located in the void volume region of this gel column in both Cd groups. Apparently, Fe was not a component of metallothionein (MT) protein. The hepatic MT induction by Cd resulted in an increase in hepatic supernatant Cu. Serum Cu and ceruloplasmin (Cp) activity were stimulated only in the injection group. The enhancement of Cp activity may possibly be due to the increase in hepatic Cu which was accompanied by an increase in hepatic Fe, rather than a decrease. Our observations suggest that Fe metabolism is influenced differentially by the administration route of Cd.
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Sugawara, N., Sugawara, C. & Miyake, H. Effects of subcutaneous and oral cadmium on iron metabolism: Role of ceruloplasmin and metallothionein. Arch Toxicol 56, 25–28 (1984). https://doi.org/10.1007/BF00316347
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DOI: https://doi.org/10.1007/BF00316347