Dopamine-induced epithelial K(+) and Na(+) movements in the salivary ducts of Periplaneta americana.

@article{Lang2001DopamineinducedEK,
  title={Dopamine-induced epithelial K(+) and Na(+) movements in the salivary ducts of Periplaneta americana.},
  author={Ingo Lang and Bernd Walz},
  journal={Journal of insect physiology},
  year={2001},
  volume={47 4-5},
  pages={465-474}
}
K(+)- and Na(+)-selective double-barrelled microelectrodes were used for intracellular and luminal measurements in salivary ducts of Periplaneta americana. The salivary ducts were stimulated with dopamine (10(-6) mol l(-1)). Dopamine decreased intracellular [K(+)] from 112+/-17 mmol l(-1) to 40+/-13 mmol l(-1) (n=6) and increased intracellular [Na(+)] from 22+/-19 mmol l(-1) to 92+/-4 mmol l(-1) (n=6). Luminal [K(+)] was 15+/-3 mmol l(-1) in the unstimulated salivary ducts and increased to 26… CONTINUE READING

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