@article{oai:soar-ir.repo.nii.ac.jp:00010293, author = {Kawahara, Takeshi and Iizuka, Tatsuhiro}, issue = {2}, journal = {CYTOTECHNOLOGY}, month = {Mar}, note = {We evaluated the effect of a crude hot-water extract (HW) of quince (Cydonia oblonga Miller) fruit on immunoglobulin E (IgE)-dependent late-phase immune reactions of mast cells using in vitro system. Mast cell-like RBL-2H3 cells were treated with quince HW and late-phase reaction was then induced by stimulation with IgE + Antigen. Quince HW reduced the elevation of interleukin-13 and tumor necrosis factor-alpha expression level. Furthermore, quince HW suppressed these cytokine expressions of mouse bone marrow-derived mast cells (BMMCs), a normal mast cell model. Leukotriene C(4) and prostaglandin D(2) production in BMMCs after 1 and 6 h of stimulation, respectively, were also reduced by treating the cells with quince HW. We found that the induction of intracellular cyclooxygenase (COX)-2 expression but not COX-1 expression in BMMCs was reduced by quince HW. These results suggest that quince HW has an inhibitory effect on broad range of the late-phase immune reactions of mast cells., Article, CYTOTECHNOLOGY. 63(2):143-152 (2011)}, pages = {143--152}, title = {Inhibitory effect of hot-water extract of quince (Cydonia oblonga) on immunoglobulin E-dependent late-phase immune reactions of mast cells}, volume = {63}, year = {2011} }