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The effects of capsaicin, dimethyl sulphoxide and pH changes on transport of sodium and/or chlorine ions in an isolated frog skin, were studied using electrophysiological methods, adapted to evaluation of ionic currents occurring in the epithelial tissues and organs. The experiment consisted in measuring potential difference (PD in mV) of an isolated skin of the aquatic frog, Rana esculenta L., placed...
Isolated frog skin, mounted in a Ussing apparatus, was investigated electrophysiologically. Application of amiloride, an inhibitor of sodium ion transport, and bumetanide, known to block the transport of chloride ions, revealed the effect of these ions on PD, both under control conditions and following mechanical stimulation. Under control conditions, mechanical stimulation of the skin caused hyperpolarization,...
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