Hypoosmotic Cell Volume Regulation in Marine Bivalves: The Effects of Membrane Potential Change and Metabolic Inhibition

1976 ◽  
Vol 49 (4) ◽  
pp. 417-424 ◽  
Author(s):  
Sidney K. Pierce, ◽  
Michael J. Greenberg
Keyword(s):  
Membrane Potential ◽  
Cell Volume ◽  
Volume Regulation ◽  
Cell Volume Regulation ◽  
Metabolic Inhibition ◽  
Potential Change ◽  
Membrane Potential Change ◽  
Marine Bivalves

scholarly journals Cell volume regulation: the role of taurine loss in maintaining membrane potential and cell pH

2000 ◽  
Vol 523 (1) ◽  
pp. 147-154 ◽  
Author(s):  
H. Guizouarn ◽  
R. Motais ◽  
F. Garcia‐Romeu ◽  
F. Borgese
Keyword(s):  
Membrane Potential ◽  
Cell Volume ◽  
Volume Regulation ◽  
Cell Volume Regulation ◽  
Cell Ph

scholarly journals Volume regulation by Amphiuma red blood cells. The membrane potential and its implications regarding the nature of the ion-flux pathways.

1980 ◽  
Vol 76 (6) ◽  
pp. 683-708 ◽  
Author(s):  
P M Cala
Keyword(s):  
Membrane Potential ◽  
Alkali Metal ◽  
Red Blood Cells ◽  
Cell Volume ◽  
Blood Cells ◽  
Volume Regulation ◽  
Regulatory Volume Decrease ◽  
Cell Volume Regulation ◽  
Ion Flux ◽  
Regulatory Response

After osmotic perturbation, the red blood cells of Amphiuma exhibited a volume-regulatory response that returned cell volume back to or toward control values. After osmotic swelling, cell-volume regulation (regulatory volume decrease; RVD) resulted from net cellular loss of K, Cl, and osmotically obliged H2O. In contrast, the volume-regulatory response to osmotic shrinkage (regulatory volume increase; RVI) was characterized by net cellular uptake of Na, Cl, and H2O. The net K and Na fluxes characteristic of RVD and RVI are increased by 1-2 orders of magnitude above those observed in studies of volume-static control cells. The cell membrane potential of volume-regulating and volume-static cells was measured by impalement with glass microelectrodes. The information gained from the electrical and ion-flux studies led to the conclusion that the ion fluxes responsible for cell-volume regulation proceed via electrically silent pathways. Furthermore, it was observed that Na fluxes during RVI were profoundly sensitive to medium [HCO3] and that during RVI the medium becomes more acid, whereas alkaline shifts in the suspension medium accompany RVD. The experimental observations are explained by a model featuring obligatorily coupled alkali metal-H and Cl-HCO3 exchangers. The anion- and cation-exchange pathways are separate and distinct yet functionally coupled via the net flux of H. As a result of the operation of such pathways, net alkali metal, Cl, and H2O fluxes proceed in the same direction, whereas H and HCO3 fluxes are cyclic. Data also are presented that suggest that the ion-flux pathways responsible for cell-volume regulation are not activated by changes in cell volume per se but by some event associated with osmotic perturbation, such as changes in intracellular pH.

scholarly journals TRPV4 Contributes to Resting Membrane Potential in Retinal Müller Cells: Implications in Cell Volume Regulation

2017 ◽  
Vol 118 (8) ◽  
pp. 2302-2313 ◽  
Author(s):  
Vanina Netti ◽  
Juan Fernández ◽  
Maia Kalstein ◽  
Alejandro Pizzoni ◽  
Gisela Di Giusto ◽  
...  
Keyword(s):  
Membrane Potential ◽  
Cell Volume ◽  
Volume Regulation ◽  
Cell Volume Regulation ◽  
Müller Cells ◽  
Resting Membrane Potential ◽  
Muller Cells

Mechanisms responsible for cell volume regulation during hyperkalemic cardioplegic arrest

2000 ◽  
Vol 70 (2) ◽  
pp. 633-638
Author(s):  
Xiwu Sun ◽  
Christopher T Ducko ◽  
Eric M Hoenicke ◽  
Karen Reigle ◽  
Ralph J Damiano
Keyword(s):  
Cell Volume ◽  
Volume Regulation ◽  
Cell Volume Regulation ◽  
Cardioplegic Arrest

scholarly journals Evoked membrane potential change in rat optic nerve fiber: Computer simulation

2007 ◽  
Vol 23 (6) ◽  
pp. 348-356 ◽  
Author(s):  
Vincent Cazenave-Loustalet ◽  
Qing-Li Qiao ◽  
Li-Ming Li ◽  
Qiu-Shi Ren
Keyword(s):  
Computer Simulation ◽  
Membrane Potential ◽  
Optic Nerve ◽  
Nerve Fiber ◽  
Potential Change ◽  
Membrane Potential Change ◽  
Optic Nerve Fiber
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