Effect of inhibitors on chloride-dependent transmural potential in the rectal wall of Schistocerca gregaria

Herrera-Mesa, L. (Luis); Jordana, R. (Rafael); Ponz, F. (Francisco)

Authors:

Herrera-Mesa, L. (Luis)

Jordana, R. (Rafael)

Ponz, F. (Francisco)

Keywords:

Inhibitors
Chloride-dependent
Transmural potential
Rectal wall
Schistocerca gregaria
Materias Investigacion::Ciencias de la vida::Zoología

Issue Date:

1977

Publisher:

Elsevier

Project:

This work was supported by grants from the Spanish “Ministerio de Fducacion y Ciencia”.

ISSN:

0022-1910

Citation:

Herrera-Mesa L, Jordana R, Ponz F. Effect of inhibitors on chloride-dependent transmural potential in the rectal wall of Schistocerca gregaria. J Insect Physiol 1971;23:677-682

Abstract

Previous experiments in vitro revealed a transmural potential difference (PD) and a shortcircuit current (IX) across the rectal wall of Schistocerca yregariu. which were dependent on chloride ions in lumen. The present report shows that anoxia. dinitrophenol and cyanide inhibit DP and IX. proving that the required energy derives from oxidative metabolism. Acetazolamide also inhibits DP and Isc. Ouabain. when in haemocoele, has also an inhibitory effect, not ascribable to a Na’-K’ pump blocking action. It is suggested that HCO; plays an important rBle in the active transport of Cl- from lumen to haemocoele and that ouabain may in some way inhibit chloride pumping.

URI:

https://hdl.handle.net/10171/39947

DOI:

http://dx.doi.org/10.1016/0022-1910(77)90083-X

Appears in Collections:

DA - Ciencias - Zoología y Ecología - Artículos de Revista
DA - Medicina - Fisiología - Artículos de revista

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