title: Antianaphylactic and antiasthmatic properties of new piperazinyl 7-(beta-hydroxypropyl)-theophylline derivatives in guinea pigs.
abstract: The present studies have demonstrated that new piperazinyl 7-(beta-hydroxypropyl)-theophylline derivatives (R3, R6, R7) possess antihistamine, antianaphylactic and antiasthmatic properties. The compound R6 exerted especially pronounced selective protective action in experimental histamine asthma and provided effective prevention against anaphylactic shock in guinea pigs. The evidence was also presented that compound R6 inhibited in vitro mast cell degranulation induced by the preparation 48/80 liberating endogenous histamine. It was shown that the compound R6, i.e. 7-beta-hydroxy-gamma-[N1-(N4-benzyl)-piperazinyl)-theophylline efficiently competed with histamine of both endo- and exogenous origin and inhibited the mediator release from the mast cells.
authors.affiliation: Department of Pharmacodynamics, Medical College, Jagiellonian University, Kraków, Poland.
authors.forename: R
authors.initials: R
authors.lastname: Czarnecki
authors.forename: T
authors.initials: T
authors.lastname: Librowski
authors.forename: M
authors.initials: M
authors.lastname: Pawłowski
mesh_terms: D000707:Anaphylaxis / Q000188:drug therapy* / Q000276:immunology; D000818:Animals; D018927:Anti-Asthmatic Agents / Q000627:therapeutic use*; D001249:Asthma / Q000139:chemically induced / Q000188:drug therapy* / Q000276:immunology; D015550:Cell Degranulation / Q000187:drug effects; D006168:Guinea Pigs; D008297:Male; D008407:Mast Cells / Q000187:drug effects / Q000276:immunology; D051381:Rats; D017208:Rats, Wistar; D013806:Theophylline / Q000031:analogs & derivatives* / Q000627:therapeutic use*
chemical_list: D018927:Anti-Asthmatic Agents; C028101:7-(beta-hydroxy-gamma-benzylpiperazinopropyl)theophylline; D013806:Theophylline