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  • Title: The role of sulphide and sulphide oxidation in the copper molybdenum antagonism in rats and guinea pigs.
    Author: Mason J, Cardin CJ, Dennehy A.
    Journal: Res Vet Sci; 1978 Jan; 24(1):104-8. PubMed ID: 625596.
    Abstract:
    The sulphide metabolism of rats fed molybdate up to levels of 1000 ppm molybdenum was examined and large decreases in hepatic sulphite oxidase activity observed; overall sulphide oxidation capacity was also reduced. Molybdate but not tungstate caused increases in the total plasma copper of guinea pigs but in particular the appearance of a new TCA-insoluble fraction. The effect was increased by the addition of 500 ppm sulphur as sulphide, to the molybdate diet whereas the addition of 500 ppm S as sulphate was ineffective. 100 ppm Mo was less effective as thiomolybdate (MoS4=) than as molybdate. The significance of these results in relation to the role of sulphide in the Cu-Mo-S interaction is discussed.
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