title: Drug-induced modifications of the immune response. 1. Substituted 1-phenylisoquinolines.
abstract: A series of 1-phenylisoquinolines and related compounds was prepared and tested for potential antiallergic activity. Several compounds of this series inhibited the antigen-induced wheal formation in rat passive cutaneous anaphylaxis (PCA) assay, a commonly used test for antiallergic activity. Many of these compounds also inhibited the antigen-induced histamine release from passively sensitized guinea pig lung slices. Furthermore, almost all of these derivatives inhibited the cyclic nucleotide phosphodiesterase, suggesting this as one of several possible mechanisms of action.
mesh_terms: D015105:3',5'-Cyclic-AMP Phosphodiesterases / Q000037:antagonists & inhibitors; D000818:Animals; D004285:Dogs; D006168:Guinea Pigs; D006636:Histamine Release / Q000187:drug effects; D006967:Hypersensitivity / Q000188:drug therapy*; D066298:In Vitro Techniques; D007546:Isoquinolines / Q000138:chemical synthesis* / Q000494:pharmacology; D008168:Lung / Q000276:immunology; D008297:Male; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D012702:Serotonin Antagonists / Q000138:chemical synthesis; D012882:Skin Tests
chemical_list: D007546:Isoquinolines; D012702:Serotonin Antagonists; D015105:3',5'-Cyclic-AMP Phosphodiesterases