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  • Title: [The concentration of electrolytes and water in the walls of the frog gall bladder following absorption of an isotonic fluid].
    Author: Iaremenko MS, Butusova IA.
    Journal: Fiziol Zh SSSR Im I M Sechenova; 1976 Feb; 62(2):275-82. PubMed ID: 130268.
    Abstract:
    In experiments on isolated gall-bladders (GB) of frogs, the transport rate of NaCl-isotonic solution by GB epithelial cells was inversely proportionate to the sodium content in them. Under oxytocin action (20 mE/ml) the absorption was inhibited and simultaneously the intracellular sodium content increased. Replacement of NaCl by sucrose solution caused a complete inhibition of absorption for 5--15 min. During this time, tissue cells excreted a considerable amount of their sodium, in result of which the intracellular amount of sodium decrease by 2.0-2.5 times. Oxytocin caused the inhibition of both the sodium transport from cells and the Na-K--ATPase activity. Obviously, the inhibitory action of oxytocin upon sodium transport from GB cells is due to a decrease of the transport activity of Na, K--ATPase under the action of hormone.
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