Effects of ion substitution on the transepithelial potential difference of the gills of the fiddler crabUca tangeri: evidence for a H+-pump in the apical membrane

@article{KrippeitDrews2004EffectsOI,
  title={Effects of ion substitution on the transepithelial potential difference of the gills of the fiddler crabUca tangeri: evidence for a H+-pump in the apical membrane},
  author={Peter Krippeit-Drews and Gisela Drews and Kai Graszynski},
  journal={Journal of Comparative Physiology B},
  year={2004},
  volume={159},
  pages={43-49}
}
Summary1.Transepithelial potential differences (PDte) and acidification rates of the bath chamber were measured on isolated perfused posterior gills of the fiddler crabUca tangeri adapted to dilute seawater.2.The PDte decreased to almost zero when Na+ was substituted by choline or when ouabain was added to the perfusion saline in high concentrations (10 mmol·l−1). Thus, the rheogenic NaCl-transport across the gill epithelium seems to be totally Na+-dependent.3.When Cl− was replaced by gluconate… Expand

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