Inhibition of rat peritoneal mast cell exocytosis by frusemide: a comparison with disodium cromoglycate

G. R. Stenton, S. M. Chow, H. Y. A. Lau

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8 Citations (Scopus)


Among the loop diuretics, frusemide possesses unique airway protective activities which may be due to the inhibition of airway inflammatory cells such as the mast cell. We previously reported that frusemide and disodium cromoglycate (DSCG) demonstrated a similar profile of inhibitory activities against histamine release from rat peritoneal mast cells activated by various stimuli which increased intracellular calcium via different routes. Furthermore, the inhibitory activities of both compounds demonstrated marked tachyphylaxis and we hence postulated that frusemide and DSCG might share the same mechanism of action which involves the prevention of extracellular calcium influx into the mast cell cytoplasm. The present study confirmed the postulation by (a) demonstrating that cross-tachyphylaxis exists between the two compounds and (b) extending the observations on histamine release to the influx of extracellular calcium (45Ca) into rat peritoneal mast cells.

Original languageEnglish
Pages (from-to)PL49-PL54
Number of pages6
JournalLife Sciences
Issue number3
Publication statusPublished - 1998
Externally publishedYes


  • mast cells
  • frusemide
  • disodium cromoglycate
  • calcium
  • antiallergic compounds
  • asthma


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