The inhibition by dexamethasone and disodium cromoglycate of anaphylactic bronchoconstriction in the rat

Article date: September 1972

By: M. K. CHURCH, H. O. J. COLLIER, G. W. L. JAMES in Volume 46, Issue 1, pages 56-65

. A method for the measurement of anaphylactic bronchoconstriction in the rat is described.

. Dexamethasone inhibited this response in a dose‐related manner.

. Disodium cromoglycate antagonized the response. A bell‐shaped dose‐response curve was obtained with peak activity at 1 mg/kg i.v.

. Meclofenamate was not active when given alone or in combination with dexamethasone.

. Methysergide significantly inhibited the response. Mepyramine, atropine, propranolol and adrenalectomy did not significantly modify the response.

. The relationships of anaphylactic bronchoconstriction in the rat to anaphylactic bronchoconstriction in the guinea‐pig and to human asthma are discussed.

. A method for the measurement of anaphylactic bronchoconstriction in the rat is described.

. Dexamethasone inhibited this response in a dose‐related manner.

. Disodium cromoglycate antagonized the response. A bell‐shaped dose‐response curve was obtained with peak activity at 1 mg/kg i.v.

. Meclofenamate was not active when given alone or in combination with dexamethasone.

. Methysergide significantly inhibited the response. Mepyramine, atropine, propranolol and adrenalectomy did not significantly modify the response.

. The relationships of anaphylactic bronchoconstriction in the rat to anaphylactic bronchoconstriction in the guinea‐pig and to human asthma are discussed.

DOI: 10.1111/j.1476-5381.1972.tb06848.x

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