Sodium, potassium and chloride intracellular concentrations in the intestine of the freshwater turtle Mauremys caspica

M. Acevedo
E. Jiménez
A. de los Ríos
35

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(-03) M ouabain in the bathing medium increased Na+ intracellular concentration while decreasing that of K+.Cyanide (10(-03) M) produced a significant increase in Na+ intracellular concentration, whereas that of K+ was not affected by this agent.

Keywords:
Intestinal Absorption/drug effects, Active/drug effects, Animals, Biological Transport, Chlorides/metabolism, Cyanides/pharmacology, In Vitro Techniques, Intestinal Mucosa/metabolism, Intracellular Fluid/analysis, Ouabain/pharmacology, Potassium/metabolism, Sodium/metabolism, Turtles/metabolism

Authors

M. Acevedo
E. Jiménez
A. de los Ríos


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