title: Amomum xanthiodes inhibits mast cell-mediated allergic reactions through the inhibition of histamine release and inflammatory cytokine production.
abstract: In this study, we investigated the effect of Amomum xanthiodes (Zingiberaceae) extract (AXE) on the mast cell-mediated allergy model and studied the possible mechanism of action. We found that AXE inhibited compound 48/80-induced systemic reactions and plasma histamine release in mice. Additionally, AXE decreased immunoglobulin E (IgE)-mediated local allergic reactions and passive cutaneous anaphylaxis (PCA), and AXE dose-dependently attenuated the release of histamine from rat peritoneal mast cells (RPMC) activated by compound 48/80 or IgE. The amounts of AXE needed for inhibition of compound 48/80-induced plasma histamine release and PCA were similar to disodium cromoglycate, the known anti-allergic drug. We found that AXE increased the cAMP levels and decreased the compound 48/80-induced intracellular Ca2+. Furthermore, AXE attenuated the phorbol 12-myristate 13-acetate (PMA) plus calcium ionophore (A23187)-stimulated tumor necrosis factor-alpha (TNF-alpha) and interleukin (IL)-6 secretion in human mast cells. The inhibitory effect of AXE on the proinflammatory cytokines was nuclear factor-kappaB (NF-kappaB)-dependent. In addition, AXE decreased PMA plus A23187-induced degradation of IkappaBalphaand the nuclear translocation of NF-kappaB. Our findings provide evidence that AXE inhibits mast cell-derived immediate-type allergic reactions, and that cAMP, intracellular Ca2+, proinflammatory cytokines, and NF-kappaB are involved in these effects.
authors.affiliation: Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea.
authors.forename: Sang-Hyun
authors.initials: SH
authors.lastname: Kim
authors.forename: Tae-Yong
authors.initials: TY
authors.lastname: Shin
mesh_terms: D035801:Amomum / Q000737:chemistry*; D000818:Animals; D002478:Cells, Cultured; D000242:Cyclic AMP / Q000378:metabolism; D006636:Histamine Release / Q000187:drug effects*; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D018836:Inflammation Mediators / Q000378:metabolism*; D015850:Interleukin-6 / Q000096:biosynthesis*; D008297:Male; D008407:Mast Cells / Q000187:drug effects* / Q000378:metabolism; D051379:Mice; D008813:Mice, Inbred ICR; D016328:NF-kappa B / Q000378:metabolism; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis*; D003189:p-Methoxy-N-methylphenethylamine / Q000494:pharmacology
chemical_list: D018836:Inflammation Mediators; D015850:Interleukin-6; D016328:NF-kappa B; D010936:Plant Extracts; D014409:Tumor Necrosis Factor-alpha; D003189:p-Methoxy-N-methylphenethylamine; D000242:Cyclic AMP