title: Inhibitory effects of dehydrocorydaline isolated from Corydalis Tuber against type I-IV allergic models.
abstract: An alkaloidal component, dehydrocorydaline (DHC) isolated from Corydalis Tuber (tuber of Corydalis turtschaninovii forma yanhusuo), has been screened for activity against types I-IV allergic reactions. In a type I allergic models, DHC at a dose of 0.5 mmol/kg, p.o. inhibited 48 h homologous passive cutaneous anaphylaxis (PCA) in rats, which is related to IgE. DHC also exhibited an inhibitory effect on antigen-induced histamine release from peritoneal mast cells. In a type II allergic model, DHC did not inhibit reversed cutaneous anaphylaxis (RCA) in rats. In a type III allergic model, DHC showed weak inhibition on direct passive arthus reaction (DPAR) in rats. Furthermore, in a type IV allergic model, DHC had inhibitory effects on the induction phase and effector phase in picryl chloride-induced contact dermatitis (PC-CD). These results indicated that DHC not only inhibits antibody-mediated allergic reactions but also influences cell-mediated allergia reactions, and the inhibitory effect of Corydalis Tuber on allergic reactions may be partially attributed to DHC.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kinki University, Osaka, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsuda
authors.forename: K
authors.initials: K
authors.lastname: Tokuoka
authors.forename: J
authors.initials: J
authors.lastname: Wu
authors.forename: H
authors.initials: H
authors.lastname: Shiomoto
authors.forename: M
authors.initials: M
authors.lastname: Kubo
mesh_terms: D000470:Alkaloids / Q000494:pharmacology*; D000818:Animals; D018926:Anti-Allergic Agents / Q000494:pharmacology*; D001183:Arthus Reaction / Q000276:immunology / Q000517:prevention & control; D017449:Dermatitis, Allergic Contact / Q000276:immunology / Q000517:prevention & control; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D006636:Histamine Release / Q000187:drug effects; D006967:Hypersensitivity / Q000276:immunology / Q000517:prevention & control*; D007073:Immunoglobulin E / Q000096:biosynthesis; D008297:Male; D008407:Mast Cells / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D008813:Mice, Inbred ICR; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000470:Alkaloids; D018926:Anti-Allergic Agents; D004365:Drugs, Chinese Herbal; C007232:dehydrocorydalin; D007073:Immunoglobulin E