[Transfer of monovalent cations across the isolated human amniotic membrane].
When the conductance and the bi-ionic potential are measured in vitro, monovalent cations are transferred according to a simple diffusion mechanism across the amnion (from the inside to the outside of the amniotic cavity or in the reverse direction) in channels with neutral or negative fixed sites. For equal concentration, the permeability to K+ is superior to that of Na+.
D000650:Amnion / Q000378:metabolism* / Q000502:physiology; D002414:Cations, Monovalent / Q000378:metabolism*; D004553:Electric Conductivity; D004579:Electron Transport; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008564:Membrane Potentials; D011188:Potassium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism
D002414:Cations, Monovalent; D012964:Sodium; D011188:Potassium
Transfert des cations monovalents à travers la membrane amniotique humaine isolée.