Yoshiki Ikeda1, Akira Iizuka1, Sakae Amagaya1,
Atsushi Ishige1, Yasuhiro Komatsu1 and Eiichi Fujihira2
1CentralResearch Laboratories, Tsumura & Co., 3586, Yoshiwara,
AmiÐmachi, InashikiÐgun, Ibaraki 300Ð1192, Japan
2Departmentof Pharmacotherapy, Hokkaido College of Pharmacy,
7Ð1, KatsuraokaÐmachi, Otaru, Hokkaido 047Ð0264, Japan
Abstract: We investigated the antiÐallergic effect of maoÐbushiÐsaishinÐto
(MBS) on the typeI allergy model in mice. When MBS was administered orally
at a dose of 0.5 or 1.0 g/kg, edema of the footpad, the amount of plasma
IgE and the ratio of eosinophilic leukocytes in peritoneal exudate cells
were all doseÐrelatedly suppressed. Moreover to investigate the antiÐtypeI
allergic mechanisms of MBS, enzymeÐlinked immunosorbent assay was performed
to determine the interleukin (IL)Ð4, ILÐ5 and interferon (IFN)Ðgamma production
from splenocytes that were stimulated by pokeweed mitogen for 48 h. In addition,
we assayed IgE production from splenic Bcells stimulated with the lipopolysaccharide
and ILÐ4 for 7 days. MBS inhibited the ILÐ4 and IFNÐgamma production, but
ILÐ5 and IgE production were not affected. Thus possibly, the inhibition
of ILÐ4 production may partially be involved in the expression of the antiÐtypeI
allergic effects of MBS.
Keywords: MaoÐbushiÐsaishinÐto, AntiÐallergy, InterleukinÐ4, IgE,
Spleen cell
Copyright© The Japanese Pharmacological Society 2000
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