Tosyl arginine methyl ester induces bronchoconstriction in rabbit bronchial tissues in vitro: a possible new mediator in asthma

Subratty, A.H.; Kok-Shun, L.H.; Yan, M.Y.; Fakim, N.

Annals of Allergy 73(3): 269-270

1994


ISSN/ISBN: 0003-4738
PMID: 8092563
Document Number: 430049
Tosyl arginine methyl ester induced bronchoconstriction in rabbit bronchial rings mounted in vitro with a calculated EC50 of 5.6 x 10(-5) M as compared with acetylcholine which induced sustainable constriction with an EC50 of 2.5 x 10(-6) M. Tosyl arginine methyl ester, however, had definite bronchoconstricting properties though less potent than acetylcholine. We concluded that our data support the hypothesis that tosyl arginine methyl ester could be a possible biochemical mediator of airway contraction.

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