Cargando…

Membrane resistance change of the frog taste cells in response to water and Nacl

The electrical properties of the frog taste cells during gustatory stimulations with distilled water and varying concentrations of NaCl were studied with intracellular microelectrodes. Under the Ringer adaptation of the tongue, two types of taste cells were distinguished by the gustatory stimuli. On...

Descripción completa

Detalles Bibliográficos
Autores principales: Sato, T, Beidler, LM
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1975
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2226226/
https://www.ncbi.nlm.nih.gov/pubmed/1104762
_version_ 1782149807571206144
author Sato, T
Beidler, LM
author_facet Sato, T
Beidler, LM
author_sort Sato, T
collection PubMed
description The electrical properties of the frog taste cells during gustatory stimulations with distilled water and varying concentrations of NaCl were studied with intracellular microelectrodes. Under the Ringer adaptation of the tongue, two types of taste cells were distinguished by the gustatory stimuli. One type, termed NaCl-sensitive (NS) cells, responded to water with hyperpolarizations and responded to concentrated NaCl with depolarizations. In contrast, the other type of cells, termed water-sensitive (WS) cells, responded to water depolarizations and responded to concentrated NaCl with hyperpolarizations. The membrane resistance of both taste cell types increased during the hyperpolarizing receptor potentials and decreased during the depolarizing receptor potentials, Reversal potentials for the depolarizing and hyperpolarizing responses in each cell type were a few millivolts positive above the zero membrane potential. When the tongue was adapted with Na-free Ringer solution for 30 min, the amplitude of the depolarizing responses in the NS cells reduced to 50% of the control value under normal Ringer adaptation. On the basis of the present results, it is concluded (a) that the depolarizing responses of the NS and WS cells under the Ringer adaptation are produced by the permeability increase in some ions, mainly Na+ ions across the taste cell membranes, and (b) that the hyperpolarizing responses of both types of taste cells are produced by a decrease in the cell membrane permeability to some ions, probably Na+ ions, which is slightly enhanced during the Ringer adaptation.
format Text
id pubmed-2226226
institution National Center for Biotechnology Information
language English
publishDate 1975
publisher The Rockefeller University Press
record_format MEDLINE/PubMed
spelling pubmed-22262262008-04-23 Membrane resistance change of the frog taste cells in response to water and Nacl Sato, T Beidler, LM J Gen Physiol Articles The electrical properties of the frog taste cells during gustatory stimulations with distilled water and varying concentrations of NaCl were studied with intracellular microelectrodes. Under the Ringer adaptation of the tongue, two types of taste cells were distinguished by the gustatory stimuli. One type, termed NaCl-sensitive (NS) cells, responded to water with hyperpolarizations and responded to concentrated NaCl with depolarizations. In contrast, the other type of cells, termed water-sensitive (WS) cells, responded to water depolarizations and responded to concentrated NaCl with hyperpolarizations. The membrane resistance of both taste cell types increased during the hyperpolarizing receptor potentials and decreased during the depolarizing receptor potentials, Reversal potentials for the depolarizing and hyperpolarizing responses in each cell type were a few millivolts positive above the zero membrane potential. When the tongue was adapted with Na-free Ringer solution for 30 min, the amplitude of the depolarizing responses in the NS cells reduced to 50% of the control value under normal Ringer adaptation. On the basis of the present results, it is concluded (a) that the depolarizing responses of the NS and WS cells under the Ringer adaptation are produced by the permeability increase in some ions, mainly Na+ ions across the taste cell membranes, and (b) that the hyperpolarizing responses of both types of taste cells are produced by a decrease in the cell membrane permeability to some ions, probably Na+ ions, which is slightly enhanced during the Ringer adaptation. The Rockefeller University Press 1975-12-01 /pmc/articles/PMC2226226/ /pubmed/1104762 Text en This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Articles
Sato, T
Beidler, LM
Membrane resistance change of the frog taste cells in response to water and Nacl
title Membrane resistance change of the frog taste cells in response to water and Nacl
title_full Membrane resistance change of the frog taste cells in response to water and Nacl
title_fullStr Membrane resistance change of the frog taste cells in response to water and Nacl
title_full_unstemmed Membrane resistance change of the frog taste cells in response to water and Nacl
title_short Membrane resistance change of the frog taste cells in response to water and Nacl
title_sort membrane resistance change of the frog taste cells in response to water and nacl
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2226226/
https://www.ncbi.nlm.nih.gov/pubmed/1104762
work_keys_str_mv AT satot membraneresistancechangeofthefrogtastecellsinresponsetowaterandnacl
AT beidlerlm membraneresistancechangeofthefrogtastecellsinresponsetowaterandnacl