[Oscillations in the transepithelial electric potential and current under the influence of lithium].
One can induce sustained oscillations of the spontaneous potential of the frog epithelium by replacing whole or part of the sodium of the external medium with lithium; in the same conditions, the electric current at imposed potential gives damped oscillations. The shape of the oscillations varies much according to the external medium. In the case of the quasi-sinusoidal oscillations, The period is always about 10 mn. We suggest formulating this phenomenon within the framework of the dissipative structurations in non-equilibrium thermodynamics.
D000818:Animals; D002463:Cell Membrane Permeability; D004848:Epithelium / Q000187:drug effects / Q000502:physiology*; D008094:Lithium / Q000494:pharmacology*; D008564:Membrane Potentials / Q000187:drug effects*; D008954:Models, Biological; D010507:Periodicity; D012964:Sodium / Q000502:physiology
D008094:Lithium; D012964:Sodium
Oscillations de potentiel et de courant électriques transépithéliaux sous l'effet du lithium