PMID- 16819170 OWN - NLM STAT- MEDLINE DCOM- 20060913 LR - 20190720 IS - 0918-6158 (Print) IS - 0918-6158 (Linking) VI - 29 IP - 7 DP - 2006 Jul TI - Inhibitory effects of Agaricus blazei on mast cell-mediated anaphylaxis-like reactions. PG - 1366-71 AB - Agaricus blazei is a medicinal mushroom native to Brazil. It used to be a source of anti-tumor and immunmoactive compounds and considered a health food in many countries. However, its specific effect against mast cell-mediated anaphylactic reactions is still unknown. In the present study, we investigated the effect of Agaricus blazei water extract (ABWE) on mast cell-mediated anaphylaxis-like reactions. We examined whether ABWE could inhibit systemic anaphylaxis-like reaction, ear swelling response, passive cutaneous anaphylaxis, and mast cell activation. ABWE inhibited compound 48/80-induced systemic anaphylaxis-like reaction, ear swelling response, and passive cutaneous anaphylaxis-like reaction in mice. ABWE also inhibited anti-dinitrophenyl (DNP) IgE-mediated passive cutaneous anaphylaxis. ABWE dose-dependently inhibited compound 48/80-induced or anti-DNP IgE-mediated histamine release from rat peritoneal mast cells (RPMC). Moreover, pretreatment with ABWE reduced compound 48/80-induced calcium uptake into RPMC. When ABWE was added, the level of intracellular cAMP in RPMC showed a significant increase compared with that of control cells. In addition, ABWE significantly inhibited compound 48/80-induced cAMP reduction in RPMC. These results propose that ABWE may be beneficial in the treatment of mast cell-mediated anaphylactic reactions. FAU - Choi, Yun Ho AU - Choi YH AD - Department of Anatomy, Chonbuk National University Medical School, Jeonbuk, Republic of Kora. FAU - Yan, Guang Hai AU - Yan GH FAU - Chai, Ok Hee AU - Chai OH FAU - Choi, Yung Hyun AU - Choi YH FAU - Zhang, Xin AU - Zhang X FAU - Lim, Jung Min AU - Lim JM FAU - Kim, Ji-Hyun AU - Kim JH FAU - Lee, Moo Sam AU - Lee MS FAU - Han, Eui-Hyeog AU - Han EH FAU - Kim, Hyoung Tae AU - Kim HT FAU - Song, Chang Ho AU - Song CH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Biol Pharm Bull JT - Biological & pharmaceutical bulletin JID - 9311984 RN - 0 (Plant Extracts) RN - 37341-29-0 (Immunoglobulin E) RN - 4091-50-3 (p-Methoxy-N-methylphenethylamine) RN - SY7Q814VUP (Calcium) SB - IM MH - *Agaricus MH - Anaphylaxis/chemically induced/*prevention & control MH - Animals MH - Calcium/*metabolism MH - Ear MH - Edema/prevention & control MH - Histamine Release/drug effects MH - Immunoglobulin E/immunology MH - Mast Cells/drug effects/*physiology MH - Mice MH - Plant Extracts/*pharmacology MH - *Plants, Medicinal MH - p-Methoxy-N-methylphenethylamine EDAT- 2006/07/05 09:00 MHDA- 2006/09/14 09:00 CRDT- 2006/07/05 09:00 PHST- 2006/07/05 09:00 [pubmed] PHST- 2006/09/14 09:00 [medline] PHST- 2006/07/05 09:00 [entrez] AID - JST.JSTAGE/bpb/29.1366 [pii] AID - 10.1248/bpb.29.1366 [doi] PST - ppublish SO - Biol Pharm Bull. 2006 Jul;29(7):1366-71. doi: 10.1248/bpb.29.1366.