Hypo-osmotic stimulation of active Na+ transport in frog muscle: Apparent upregulation of Na+ pumps

@article{Venosa1991HypoosmoticSO,
  title={Hypo-osmotic stimulation of active Na+ transport in frog muscle: Apparent upregulation of Na+ pumps},
  author={Roque A Venosa},
  journal={The Journal of Membrane Biology},
  year={1991},
  volume={120},
  pages={97-104}
}
SummaryThe purpose of this work was to determine if hypotonicity, in addition to the stimulation of active Na+ transport (Venosa, R.A., 1978,Biochim. Biophys. Acta510:378–383), promoted changes in (i) active K+ influx, (ii) passive Na− and K+ fluxes, and (iii) the number of3H-ouabain binding sites.The results indicate that a reduction of external osmotic pressure (π) to one-half of its normal value (π=0.5) produced the following effects: (i) an increase in active K+ influx on the order of 160… CONTINUE READING
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Calcium dependence of hypoosmotically induced potassium release in cultured astrocytes.

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