PMID- 24832111 OWN - NLM STAT- MEDLINE DCOM- 20160509 LR - 20220409 IS - 1872-7573 (Electronic) IS - 0378-8741 (Linking) VI - 154 IP - 3 DP - 2014 Jul 3 TI - Gnetin H isolated from Paeonia anomala inhibits FcepsilonRI-mediated mast cell signaling and degranulation. PG - 798-806 LID - S0378-8741(14)00356-0 [pii] LID - 10.1016/j.jep.2014.05.005 [doi] AB - ETHNOPHARMACOLOGICAL RELEVANCE: Paeonia anomala L. is used in Mongolian traditional medicine to treat various diseases including indigestion, abdominal pain, kidney disorders, inflammation, and female diseases. In this study we examined the effects of Paeonia anomala extract (PAE) and compounds derived from Paeonia anomala on immunoglobulin E (IgE)-mediated type I hypersensitivity responses in vitro. MATERIALS AND METHODS: Degranulation assay, reverse transcription PCR, enzyme-lined immunosorbent assays, western blot analyses were performed to measure allergic and proinflammatory mediators in IgE-stimulated rat basophilic leukemia (RBL)-2H3 mast cells treated with or without PAE or gnetin H. RESULTS: Seventeen compounds were isolated, and beta-hexosaminidase release from IgE-stimulated RBL-2H3 mast cells was measured. Of the seventeen isolated compounds, gnetin H, a resveratrol derivative, significantly inhibited beta-hexosaminidase release from RBL-2H3 cells with an IC50 value of 0.3 muM. Notably, Gnetin H reduced beta-hexosaminidase release at lower concentrations than resveratrol. Furthermore, PAE and gnetin H inhibited histamine secretion, decreased the production and mRNA expression of tumor necrosis factor-alpha and interleukin-4 and suppressed translocation of nuclear factor kappaB. PAE and gnetin H also reduced the expression of cyclooxygenase-2 and production of prostaglandin E2. PAE and gnetin H suppressed the phosphorylation of Syk, protein kinase C (PKC)mu, phospholipase Cgamma, and the mitogen-activated protein kinases, c-Jun N-terminal kinase, p38, and extracellular signal-regulated kinase. CONCLUSIONS: These results suggest that PAE and its active compound gnetin H could be promising therapeutic agents for allergic disorders. CI - Copyright (c) 2014 Elsevier Ireland Ltd. All rights reserved. FAU - Kim, Myungsuk AU - Kim M AD - Functional Food Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangwon, Korea. FAU - Lim, Sue Ji AU - Lim SJ AD - Functional Food Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangwon, Korea; Department of chemistry, Gangneung-Wonju National University, Gangneung, Gangwon-do 210-702, Korea. FAU - Oidovsambuu, Sarangerel AU - Oidovsambuu S AD - Functional Food Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangwon, Korea. FAU - Nho, Chu Won AU - Nho CW AD - Functional Food Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangwon, Korea. Electronic address: cwnho@kist.re.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140514 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 0 (FCER1A protein, rat) RN - 0 (Receptors, IgE) RN - 0 (Resorcinols) RN - 0 (Stilbenes) RN - 2RXU4J2Z19 (gnetin H) SB - IM MH - Animals MH - Cell Survival/drug effects MH - Mast Cells/*drug effects/*metabolism MH - Molecular Structure MH - Paeonia/*chemistry MH - Rats MH - Receptors, IgE/*antagonists & inhibitors/metabolism MH - Resorcinols/chemistry/isolation & purification/*pharmacology MH - Signal Transduction/*drug effects MH - Stilbenes/chemistry/isolation & purification/*pharmacology MH - Tumor Cells, Cultured OTO - NOTNLM OT - FcepsilonRI signaling OT - Gnetin H OT - IgE-mediated allergic diseases OT - Paeonia anomala OT - RBL-2H3 EDAT- 2014/05/17 06:00 MHDA- 2016/05/10 06:00 CRDT- 2014/05/17 06:00 PHST- 2014/03/31 00:00 [received] PHST- 2014/05/05 00:00 [accepted] PHST- 2014/05/17 06:00 [entrez] PHST- 2014/05/17 06:00 [pubmed] PHST- 2016/05/10 06:00 [medline] AID - S0378-8741(14)00356-0 [pii] AID - 10.1016/j.jep.2014.05.005 [doi] PST - ppublish SO - J Ethnopharmacol. 2014 Jul 3;154(3):798-806. doi: 10.1016/j.jep.2014.05.005. Epub 2014 May 14.