title: Effect of TYB-2285 on antigen-induced histamine release from mouse bone marrow-derived persisting cells (P-cells) primed with interleukin-3-containing conditioned medium (IL3-CM).
abstract: 1. The present study was carried out to investigate the effect of TYB-2285 [3,5-bis(acetoxyacethylamino)-4-chlorobenzonitrile] on histamine release from persisting cells (P-cells) primed with interleukin-3-containing conditioned medium (IL3-CM). 2. IL3-CM enhanced antigen-induced histamine release from P-cells, although IL3-CM did not affect spontaneous histamine release. 3. TYB-2285 inhibited antigen-induced histamine release in the presence of IL3-CM, although it did not inhibit histamine release in the absence of IL3-CM. 4. The enhancement of histamine release by IL3-CM was reproduced by recombinant IL-3 (1-100 U/ml). 5. These results demonstrate that TYB-2285 inhibits the histamine release primed with IL-3 and also suggests that TYB-2285 might regulate allergic inflammation in vivo by the suppression of mediator release primed with IL-3.
authors.affiliation: Department of Pharmacology, Pharmaceuticals Research Center, Toyobo Co. Ltd, Shiga, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Tominaga
authors.forename: H
authors.initials: H
authors.lastname: Hayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Yanagihara
authors.forename: A
authors.initials: A
authors.lastname: Koda
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000187:drug effects / Q000378:metabolism*; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D017077:Culture Media, Conditioned; D006636:Histamine Release / Q000187:drug effects*; D007202:Indicators and Reagents; D007377:Interleukin-3 / Q000494:pharmacology*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009570:Nitriles / Q000494:pharmacology*
chemical_list: D017077:Culture Media, Conditioned; D007202:Indicators and Reagents; D007377:Interleukin-3; D009570:Nitriles; C081050:3,5-bis(acetoxyacetylamino)-4-chlorobenzonitrile