Literature DB >> 2159413

Reversal by EGTA of the enhanced secretory responsiveness of mast cells due to treatment with ouabain.

T Johansen1, T Knudsen, H Bertelsen.   

Abstract

The effect of EGTA on the enhancement by ouabain of compound 48/80-induced secretion from mast cells was compared with the effect on the Na(+)-K+ pump activity. The time-dependent secretory enhancement by ouabain was blocked by addition of EGTA to the cell suspension concomitantly with the addition of ouabain, and EGTA caused a large increase in the pump activity. Addition of 10 microM EGTA to ouabain-treated cells stopped but did not reverse the enhancement. The experiments show that the effect of ouabain was due to changes in a calcium pool utilized in compound 48/80-induced secretion following changes in the Na+,K+ pump activity.

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Year:  1990        PMID: 2159413     DOI: 10.1016/0014-5793(90)80196-p

Source DB:  PubMed          Journal:  FEBS Lett        ISSN: 0014-5793            Impact factor:   4.124


  4 in total

1.  The role of the sodium pump in the plasma membrane potential changes during mast cell activation.

Authors:  C Bronner; M Ratsimbason; F Pelen; Y Landry
Journal:  Agents Actions       Date:  1991-05

2.  Arterial contractions induced by cumulative addition of calcium in hypertensive and normotensive rats: influence of endothelium.

Authors:  M Kähönen; P Arvola; X Wu; I Pörsti
Journal:  Naunyn Schmiedebergs Arch Pharmacol       Date:  1994-06       Impact factor: 3.000

3.  Dual regulation of the Na+/H(+)-exchange in rat peritoneal mast cells: role of protein kinase C and calcium on pHi regulation and histamine release.

Authors:  U G Friis; T Johansen
Journal:  Br J Pharmacol       Date:  1996-07       Impact factor: 8.739

4.  Activation of the Na+/K(+)-pump in rat peritoneal mast cells following histamine release: a possible role in cell recovery.

Authors:  T Knudsen; I Ferjan; T Johansen
Journal:  Br J Pharmacol       Date:  1993-01       Impact factor: 8.739

  4 in total

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