[Na transport in the cochlea of mammals].
Endolymph, the fluid that bathes the apical side of the inner ear sensory cells, is a K-rich and Na-poor fluid. In the cochlea, various epithelial transport systems involved in the transport of Na from the apical endolymphatic to the basolateral perilymphatic compartments have been identified: basolateral Na+, K(+)-ATPase, apical non selective cationic channels, Na+/H+ exchanger, and ENaC epithelial Na channel. These transporters may be involved in physiological and pathological processes in which endolymph Na concentration is high.
D000818:Animals; D001692:Biological Transport; D003051:Cochlea / Q000502:physiology*; D004847:Epithelial Cells / Q000502:physiology; D008322:Mammals / Q000502:physiology*; D012964:Sodium / Q000378:metabolism*
D012964:Sodium
Transports de Na dans la cochlée de mammifères.