Results 281 to 290 of about 9,542,103 (311)
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Oscillating and triggering properties of T cell membrane potential
Immunology Letters, 1990Using the patch-clamp technique, membrane potential (MP) behaviour under different electrogenic stimuli for both resting and Con A-activated T lymphocytes was studied. The voltage-gated K+ channels stabilize MP at the level of their threshold of activation (-44 +/- 5 mV, n = 27).
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Subthreshold oscillations of the membrane potential: a functional synchronizing and timing device
Journal of Neurophysiology, 19931. Subthreshold membrane potential oscillations have been observed in different types of CNS neurons. In this in vitro study, we examined the possible role of these oscillations by analyzing the responses of neurons from the inferior olivary nucleus to a combined stimulation of sine wave and synaptic potentials. 2.
I, Lampl, Y, Yarom
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Oscillations of membrane potential in L cells
The Journal of Membrane Biology, 1979Effects of divalent cations on oscillations of membrane potentials (i.e., spontaneous repetitive hyperpolarizing responses) and on hyperpolarizing responses induced by electrical stimuli as well as on resting potentials were studied in large nondividing L cells.
Y, Okada, W, Tsuchiya, A, Inouye
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Subthreshold membrane potential oscillations of type A neurons in injured DRG
Brain Research, 2001An abundance of subthreshold membrane potential oscillations (SMPOs) at resting potential was observed in the neurons of chronically compressed dorsal root ganglia (DRG) using intracellular recording in vivo. Out of 386 neurons, 63 type A neurons displayed SMPOs.
J L, Xing, S J, Hu, K P, Long
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Membrane potential oscillation from a novel combination of ion channels
American Journal of Physiology-Cell Physiology, 1993Single pigmented epithelial cells from the ciliary body of the eye were studied using the whole cell voltage and current clamp, permeabilized patch recording, and patch-clamp recording. These cells can produce two types of oscillation. Both are slow, with a period in the range of 1-2 min; one has a low amplitude and oscillates between -60 and -80 mV ...
J W, Stelling, T J, Jacob
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Diabetes, 2002
A model for the relationship between ionic and metabolic oscillations and plasma insulin oscillations is presented. It is argued that the pancreatic β-cell in vivo displays two intrinsic frequencies that are important for the regulation of plasma insulin oscillations.
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A model for the relationship between ionic and metabolic oscillations and plasma insulin oscillations is presented. It is argued that the pancreatic β-cell in vivo displays two intrinsic frequencies that are important for the regulation of plasma insulin oscillations.
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Membrane potential oscillations in enzymatically isolated rat myocardial cells
Acta Physiologica Scandinavica, 1983Enzymatical isolation was used for preparation of single myocardial cells, contractions of which were mainly of slow phasic type but normal fast contractions also occurred. Membrane potential (MP) changes of these cells were measured by conventional micro‐electrode techniques.
H, Lehto, A, Talo, R, Tirri, M, Vornanen
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Modelling Oscillations of Membrane Potential Difference
2007The oscillation of the membrane potential difference (PD) is considered in terms of one or more ion transporters changing their conductances. For slow oscillations (period greater than about one minute), the transporters could be identified by employing the current–voltage (I/V) technique.
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European Journal of Neuroscience, 2002
AbstractThe actions of ciguatoxins from the Pacific (P‐CTX‐1) and Caribbean (C‐CTX‐1) regions were investigated in isolated parasympathetic neurons from rat intracardiac ganglia using patch‐clamp recording techniques. Under current‐clamp conditions, bath application of P‐CTX‐1 (1–10 nm) or C‐CTX‐1 (10–30 nm) caused a gradual depolarization that was ...
Hogg, Ron C +2 more
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AbstractThe actions of ciguatoxins from the Pacific (P‐CTX‐1) and Caribbean (C‐CTX‐1) regions were investigated in isolated parasympathetic neurons from rat intracardiac ganglia using patch‐clamp recording techniques. Under current‐clamp conditions, bath application of P‐CTX‐1 (1–10 nm) or C‐CTX‐1 (10–30 nm) caused a gradual depolarization that was ...
Hogg, Ron C +2 more
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Simulation of the light-induced oscillations of the membrane potential in Potamogeton leaf cells
The Journal of Membrane Biology, 1993An attempt has been made to simulate the light-induced oscillations of the membrane potential of Potamogeton lucens leaf cells in relation to the apoplastic pH changes. Previously it was demonstrated that the membrane potential of these cells can be described in terms of proton movements only.
MIEDEMA, H, PRINS, HBA
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