PMID- 10072701 OWN - NLM STAT- MEDLINE DCOM- 19990427 LR - 20171116 IS - 1043-6618 (Print) IS - 1043-6618 (Linking) VI - 39 IP - 2 DP - 1999 Feb TI - Magnoliae flos inhibits mast cell-dependent immediate-type allergic reactions. PG - 107-11 AB - The mast cell plays a pivotal role in initiating allergic response by secreting intracytoplasmic granular mediators such as histamine. Magnoliae flos has been used for the treatment of allergic disease in Korea. However, its effect in experimental models remains unknown. The present report describes an inhibitory effect of Magnoliae flos on mast cell-mediated immediate-type allergic reactions. Topical application of compound 48/80 can induce an ear swelling response in normal (WBB6F1-+/+) mice but not in the congenic mast cell-deficient WBB6F1-W/Wv mice. Magnoliae flos inhibited concentration-dependently mast cell-dependent ear swelling response induced by compound 48/80 by topical application. Magnoliae flos inhibited concentration-dependently passive cutaneous anaphylaxis induced by anti-dinitrophenyl (DNP) IgE in rats by topical application. Magnoliae flos also inhibited concentration-dependently the histamine release from the rat peritoneal mast cells by compound 48/80 or anti-DNP IgE. Moreover, Magnoliae flos had a significant inhibitory effect on compound 48/80-induced systemic anaphylactic reaction. These results indicate that Magnoliae flos inhibits immediate-type allergic reactions by inhibition of mast cell degranulation in vivo and in vitro. CI - Copyright 1999 The Italian Pharmacological Society. FAU - Kim, H M AU - Kim HM AD - College of Pharmacy, Wonkwang University, Iksan, Chonbuk, 570-749, South Korea. FAU - Yi, J M AU - Yi JM FAU - Lim, K S AU - Lim KS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Pharmacol Res JT - Pharmacological research JID - 8907422 RN - 0 (Dinitrobenzenes) RN - 0 (Plant Extracts) RN - 37341-29-0 (Immunoglobulin E) RN - 4091-50-3 (p-Methoxy-N-methylphenethylamine) SB - IM MH - Anaphylaxis/chemically induced/immunology MH - Animals MH - Cattle MH - Dinitrobenzenes/immunology/toxicity MH - Edema/chemically induced/immunology MH - Histamine Release/drug effects MH - Humans MH - Hypersensitivity, Immediate/*immunology/pathology MH - Immunoglobulin E/immunology MH - Magnoliopsida/*chemistry MH - Mast Cells/*immunology MH - Mice MH - Passive Cutaneous Anaphylaxis/drug effects MH - Plant Extracts/pharmacology MH - Rats MH - p-Methoxy-N-methylphenethylamine/toxicity EDAT- 1999/03/12 00:00 MHDA- 1999/03/12 00:01 CRDT- 1999/03/12 00:00 PHST- 1999/03/12 00:00 [pubmed] PHST- 1999/03/12 00:01 [medline] PHST- 1999/03/12 00:00 [entrez] AID - S1043-6618(98)90414-5 [pii] AID - 10.1006/phrs.1998.0414 [doi] PST - ppublish SO - Pharmacol Res. 1999 Feb;39(2):107-11. doi: 10.1006/phrs.1998.0414.