[The effect of anoxia and energy metabolism inhibitors on potassium and sodium homeostasis in the neurons of the gastropod mollusk].
Anoxia and inhibitors of energy metabolism have been studied for their effect on intracellular K and Na concentrations, membrane potential, conductivity, passive and active ouabain-sensitive transport of potassium (86Rb) in neurons of freshwater snail Planorbarius corneus. The X-ray microanalysis has shown that anoxia caused no changes in K and Na concentrations in neurons. NaCN inhibited oxygen uptake by ganglia, but has actually no effect on the membrane potential, conductivity and 86Rb uptake in neurons. Much stronger inhibition of the 86Rb uptake was observed in the presence of 2-deoxy-D-glucose. When both glycolytic and respiratory inhibitors were added, the effect was maximal. It is supposed that glycolysis is the main source of energy to maintain the ion homeostasis in the mollusc neurons.
Skul'skiĭ
I A
IA
Pivovarova
N B
NB
Gapon
S A
SA
Korotkov
S M
SM
D000818:Animals; D001692:Biological Transport / Q000187:drug effects / Q000502:physiology; D002118:Calcium / Q000502:physiology*; D015687:Cell Hypoxia / Q000187:drug effects / Q000502:physiology*; D002463:Cell Membrane Permeability / Q000187:drug effects / Q000502:physiology; D003864:Depression, Chemical; D004734:Energy Metabolism / Q000187:drug effects / Q000502:physiology*; D006706:Homeostasis / Q000187:drug effects / Q000502:physiology*; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects / Q000502:physiology; D008974:Mollusca / Q000187:drug effects / Q000502:physiology*; D009474:Neurons / Q000187:drug effects / Q000502:physiology*; D010042:Ouabain / Q000494:pharmacology; D010101:Oxygen Consumption / Q000187:drug effects / Q000502:physiology; D011188:Potassium / Q000502:physiology*
D010042:Ouabain; D011188:Potassium; D002118:Calcium
Vliianie anoksii i ingibitorov énergeticheskogo metabolizma na gomeostaz kaliia i natriia v neĭronakh briukhonogogo molliuska.