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  • Title: Selective removal of copper bound to metallothionein in the liver of LEC rats by tetrathiomolybdate.
    Author: Suzuki KT, Yamamoto K, Kanno S, Aoki Y, Takeichi N.
    Journal: Toxicology; 1993 Oct 25; 83(1-3):149-58. PubMed ID: 8248942.
    Abstract:
    LEC rats (Long-Evans with a cinnamon-like coat color) have a genetical defect in Cu metabolism. Male LEC rats aged 10 weeks were injected ip with TTM at a dose of 5 or 10 mg/kg body weight for 8 consecutive days and killed one day after the last injection. Cu that had accumulated in the liver at a concentration of 251 micrograms/g liver was decreased to 82.7 or 74.3 micrograms/g liver respectively, by the treatment. Although most of Cu was bound to MT as a soluble form before TTM treatment, the metal remaining in the liver after the treatment was present almost exclusively in the non-soluble fraction. Zinc (Zn) present, bound to MT before the treatment, was also partly removed from the liver by TTM, and the Zn remaining in the liver after the treatment was revealed to be bound to MT (Zn-MT) by high performance liquid chromatography-atomic absorption spectrophotometry. Iron (Fe) in the liver was not affected by TTM treatment. Cu in the kidneys and spleen increased by TTM treatment, while Zn and iron were not affected. Treatment of LEC rats with severe jaundice effectively cured the animals from otherwise lethal signs by only two ip injections of TTM at a dose of 10 mg/kg body weight.
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