title: Characterization of Ascaris-induced biphasic skin allergic reaction model in mice: possible roles of mast cells in early-phase and CD4-positive T cells in late-phase reactions.
abstract: We established an Ascaris-induced biphasic skin allergic reaction in mice. In the early-phase reaction (EPR), mast cell degranulation was observed, and tranilast inhibited ear edema. In mast-cell-deficient mice (WBB6F(1)-W/W(V) mice), ear edema in the EPR disappeared, whereas that in the late-phase reaction (LPR) remained. Eosinophils increased, and CD4-positive T cells tended to increase in the LPR. Anti-CD4 antibody, anti-IL-4 antibody and anti-IL-5 antibody all inhibited ear edema and had a tendency to inhibit eosinophil infiltration in the LPR. These data suggest that the EPR is induced by histamine released from mast cells, whereas the LPR is induced by IL-4 and IL-5 produced from CD4-positive T cells.
authors.affiliation: Medicinal Biology Research Laboratories, Fujisawa Pharmaceutical Co. Ltd., Osaka, Japan. takanori_sengoku@po.fujisawa.co.jp
authors.forename: T
authors.initials: T
authors.lastname: Sengoku
authors.forename: S
authors.initials: S
authors.lastname: Sato
authors.forename: S
authors.initials: S
authors.lastname: Sakuma
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: Y
authors.initials: Y
authors.lastname: Ohkubo
authors.forename: T
authors.initials: T
authors.lastname: Goto
mesh_terms: D000818:Animals; D001200:Ascaris / Q000276:immunology; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D004195:Disease Models, Animal; D004423:Ear / Q000502:physiology; D004487:Edema / Q000276:immunology / Q000378:metabolism; D004804:Eosinophils / Q000276:immunology / Q000378:metabolism; D005260:Female; D006636:Histamine Release / Q000276:immunology; D006967:Hypersensitivity / Q000276:immunology; D006968:Hypersensitivity, Delayed / Q000276:immunology* / Q000378:metabolism; D006969:Hypersensitivity, Immediate / Q000276:immunology* / Q000378:metabolism; D015847:Interleukin-4 / Q000276:immunology / Q000378:metabolism; D015848:Interleukin-5 / Q000276:immunology / Q000378:metabolism; D008407:Mast Cells / Q000276:immunology* / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D012882:Skin Tests
chemical_list: D015848:Interleukin-5; D015847:Interleukin-4