Title : Immunopharmacological actions of the new antiallergic drug 11-oxo-11H-pyrido[2,1-b]quinazoline-2-carboxylic acid. Effects on type I hypersensitivity reactions in human leukocytes and in human and monkey lungs.

Pub. Date : 1986 Nov

PMID : 2434111






3 Functional Relationships(s)
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1 Sm 857 dose-dependently inhibited histamine release induced by mite antigen, anti-human IgE, calcium ionophore A23187 (A23187) and protein A from peripheral leukocytes of atopic patients, but had no effect on the levels of cyclic AMP and GMP in human leukocytes. Histamine immunoglobulin heavy constant epsilon Homo sapiens
2 In addition, antigen- or anti-human IgE-induced anaphylactic histamine release from human and monkey lung fragments passively sensitized with human reaginic serum sensitive to mite antigen as well as A23187-induced histamine release from non-sensitized monkey lung fragments, were inhibited dose-dependently by Sm 857. Histamine immunoglobulin heavy constant epsilon Homo sapiens
3 In addition, antigen- or anti-human IgE-induced anaphylactic histamine release from human and monkey lung fragments passively sensitized with human reaginic serum sensitive to mite antigen as well as A23187-induced histamine release from non-sensitized monkey lung fragments, were inhibited dose-dependently by Sm 857. Histamine immunoglobulin heavy constant epsilon Homo sapiens