Demonstration of active sodium transport across the isolated rabbit corneal endothelium.
The recent demonstration of sodium-sensitivity and chloride-insensitivity of the bicarbonate transport system of the rabbit corneal endothelium promoted a further examination of sodium fluxes across this membrane. Unidirectional fluxes were measured on paired endothelia at steady state. A net sodium flux from stroma to aqueous was found with a value of 3.5 muequiv/cm2/hr (almost double that of bicarbonate transport), which was independent of the ambient bicarbonate concentration.
D000818:Animals; D001692:Biological Transport; D003315:Cornea / Q000502:physiology*; D004727:Endothelium / Q000502:physiology; D066298:In Vitro Techniques; D011817:Rabbits; D012964:Sodium / Q000502:physiology*
D012964:Sodium