Chloride-dependent electrical potentials across the mantle epithelium of helix

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Abstract

1. 1. The shell side of the mantle of Helix pomatia and H. aspersa is normally several mV positive to the other side in vivo and in vitro. 2. 2. The short circuit averages 40 μamp/cm2. It does not depend on Na, K, Ca, Mg or HCO3, but requires the presence of Cl on the shell side. 3. 3. The electrical gradient is reduced by 2,4-dinitrophenol, thiocyanate and furosemide, but not by oubain, acetazolamide or SITS. 4. 4. It is suggested that fluid leaks between the epithelial cells towards the shell in vivo and is reabsorbed by active transport of Cl. 5. 5. In H. pomatia about to secrete calcareous epiphragms the electrical potential reverses, but still requires Cl. © 1983.

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Enyikwola, O., & Burton, R. F. (1983). Chloride-dependent electrical potentials across the mantle epithelium of helix. Comparative Biochemistry and Physiology -- Part A: Physiology, 74(1), 161–164. https://doi.org/10.1016/0300-9629(83)90728-4

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