Potassium secretion by the cortical collecting tubule.

  title={Potassium secretion by the cortical collecting tubule.},
  author={Roger G O'neil},
  journal={Federation proceedings},
  volume={40 9},
The isolated perfused rabbit cortical collecting tubule has been shown to actively transport K from bath to lumen. The first step in this process is active uptake of K across the basolateral membrane via and Na:K exchange pump as evidenced by: 1) basolateral localization and Na:K exchange properties of the ouabain-sensitive Na,K-ATPase, 2) ouabain sensitivity of the Na and K fluxes, 3) interdependence of the Na and K fluxes, and 4) ouabain-sensitivity of 42K uptake into the cell across the… CONTINUE READING

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