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  • Title: Sodium, potassium and chloride intracellular concentrations in the intestine of the freshwater turtle Mauremys caspica.
    Author: Acevedo M, Jiménez E, Díez de los Ríos A.
    Journal: Rev Esp Fisiol; 1983 Jun; 39(2):123-7. PubMed ID: 6622802.
    Abstract:
    Sodium, potassium and chloride intracellular concentrations were measured. Sodium replacement from the bathing medium induced a significant decrease in chloride intracellular concentration. Conversely, chloride replacement from the bathing medium induced a significant decrease in sodium intracellular concentration. These results suggest the existence of a coupled NaCl transport system. The presence of 10(-3) M ouabain in the bathing medium increased Na+ intracellular concentration while decreasing that of K+. Cyanide (10(-3) M) produced a significant increase in Na+ intracellular concentration, whereas that of K+ was not affected by this agent.
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