Effects of Na+ gradient on the intracellular Ca2+ oscillation in the sympathetic ganglion cell: Na-Ca exchange in the neurone cell soma?
The effects of the removal of extracellular Na+ and the increase in the intracellular Na+ on the slow rhythmic membrane hyperpolarizations (rmhs) were studied in bullfrog sympathetic ganglion cells. The interval of rmhs, reflecting a relative change in the basal intracellular Ca2+, was lengthened by either treatment, disfavouring the possible involvement of the Na-Ca exchange mechanism in the Ca2+-buffering in the ganglion cell soma.
D000818:Animals; D002118:Calcium / Q000502:physiology*; D002463:Cell Membrane Permeability; D004553:Electric Conductivity; D005728:Ganglia, Sympathetic / Q000502:physiology*; D066298:In Vitro Techniques; D008564:Membrane Potentials; D011892:Rana catesbeiana; D012964:Sodium / Q000502:physiology*
D012964:Sodium; D002118:Calcium