Effects of an hypo-osmotic shock on Na+, K+ and Cl− levels in isolated axons of Carcinus maenas
Kevers, C.; Péqueux, A.; Gilles, R. (1979). Effects of an hypo-osmotic shock on Na+, K+ and Cl− levels in isolated axons of Carcinus maenas. J. Comp. Physiol. A Sens. Neural Behav. Physiol. 129(4): 365-371. https://dx.doi.org/10.1007/BF00686995
In: Journal of Comparative Physiology A. Sensory, Neural, and Behavioral Physiology. Springer: Heidelberg; Berlin. ISSN 0340-7594; e-ISSN 1432-1351, meer
Application of an hypo-osmotic shock to isolated axons of Carcinus maenas induces a decrease in the intracellular content of K+, Na+ and Cl−. The changes in Na+ and Cl− levels are only transitory while the K+ level reaches new steady-state value much lower than the control. The modification of K+ concentration cannot be ascribed only to a simple dilution process and it is proposed that the regulation of intracellular K+ plays an important role in limiting the swelling which occurs in this tissue.Hypo-osmotic conditions also induce an increase in Na+ permeability.The results are discussed in relation to changes in ion transport and interactions with intracellular organic compounds that could arise during the process of volume regulation.
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