[The permeability of rat erythrocyte membranes for sodium and potassium ions during exposure to pulsed electromagnetic field under head-down-tilt hypokinesia].
The effect of a low-frequency (1 and 10 Hz) pulse electromagnetic field (PEMF) on permeability of erythrocyte membrane in 47 rats while being exposed to a 14-day head-down tilt (HDT) and in 60 control rats was studied. After exposure to PEMF (20 min, 6-24 mT) the rats were Na(+)-, K(+)-cotransport and Na+,Na(+)-metabolism, Na and K losses as well as specific activity of Na(+)-, K(+)-ATP in the erythrocytes have been measured. An ability of PEMF to inhibit an ATP activity by 20-30% and to increase the rate of ions loss from the cells has been revealed. Under HDT, these effects are preserved. The possible mechanisms of PEMF effect on an ionic permeability of the membranes are discussed.
Loginov
V A
VA
Timonin
I M
IM
Minchenko
B I
BI
Klimovitskiĭ
V Ia
VIa
D000818:Animals; D001692:Biological Transport / Q000502:physiology; D002463:Cell Membrane Permeability / Q000502:physiology*; D004574:Electromagnetic Fields; D004910:Erythrocyte Membrane / Q000502:physiology*; D007103:Immobilization / Q000502:physiology*; D008297:Male; D011187:Posture / Q000502:physiology*; D011188:Potassium / Q000097:blood*; D051381:Rats; D017208:Rats, Wistar; D012964:Sodium / Q000097:blood*; D013997:Time Factors; D014893:Weightlessness
D012964:Sodium; D011188:Potassium
Pronitsaemost' membran éritrotsitov krysy dlia ionov natriia i kaliia pri vozdeĭstvii impul'snogo élektromagnitnogo polia v usloviiakh antiortostaticheskoĭ gipokinezii.