PMID: 3214516Dec 1, 1988Paper

Local and general experimental anti-anaphylactic effect of 554 L, a synthetic antihistaminic

Allergie et immunologie
A SabbahJ Le Sellin

Abstract

554 L, a synthetic histamine depressant, was first made in September 1956. In spite of the age of this compound, it seemed to us that it may be of interest to examine it for possible experimental general and localised bronchial antianaphylactic activity. In the first experiments, the results showed an anti-anaphylactic effect in guinea pigs that had been sensitised to cow milk. The second study proved that there was an anti-anaphylactic effect locally on the bronchii by an aerosol of 554 L or Hypostamine on guinea pigs that were sensitive to OVA. These results may produce development of this old compound in delayed release and aerosol presentations.

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