Amiloride-sensitive ammonium and sodium ion transport in the blue crab.

@article{Pressley1981AmiloridesensitiveAA,
  title={Amiloride-sensitive ammonium and sodium ion transport in the blue crab.},
  author={Thomas A. Pressley and James S. Graves and A. R. Krall},
  journal={The American journal of physiology},
  year={1981},
  volume={241 5},
  pages={R370-8}
}
In the estuarine crab, Callinectes sapidus, net NH4+ efflux was twice as high in animals acclimated to 17% salinity seawater (SW) (0.495 +/- 0.084 mumol . h-1 . g wet wt-1, n = 7) than in animals acclimated to full-strength 35% SW (0.212 +/- 0.028 mumol . h-1 . g-1, n = 7). Amiloride (3 X 10(-4) M) in the external SW reversibly inhibited these effluxes by 63 +/- 6% (n = 6) and 67 +/- 6% (n = 5), respectively. Unidirectional Na+ influx was reversibly inhibited 42 +/- 6% (n = 7) by amiloride in… CONTINUE READING
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