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  • Title: Vanadium ion stimulation of chloride secretion by rabbit colonic epithelium.
    Author: Hatch M, Freel RW, Goldner AM, Earnest DL.
    Journal: Biochim Biophys Acta; 1983 Aug 10; 732(3):699-704. PubMed ID: 6307380.
    Abstract:
    Ionized forms of vanadium are known to exert diverse biological activities. Of particular interest in the inhibitory action of the vanadium ion on (Na+ + K+)-ATPase. This report describes another action of the vanadium ion on the rabbit colonic epithelium. Micromolar quantities of vanadate, applied to the serosal side of the isolated rabbit colonic epithelium, result in a stimulation of electrogenic chloride secretion by this epithelium. Sodium transport is unaffected by the vanadium ion in the concentrations used in this study. It is proposed that the vanadyl ion activates adenylate cyclase and thereby initiates subsequent secretory events.
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