Abstract
Objectives : The water extract of Bowon-tang composited with thePanax, AstragalusandGlycyrrhiza Radixhas been traditionally used for treatment of a sickly child and smallpox in oriental medicine. However, little is known about the regulatory effects of Bowon-tang on the production, expression and activity of immune mediators [nitric oxide, prostaglandin E2, inducible nitric oxide synthetase, cyclooxygenase-2], the macrophage activation factor production, the proliferation, subset expression, the killing activity, and the capping in immune cells.Methods : In this study, we investigated the effects of water extracts from Bowon-tang,Panax, AstragalusorGRin mouse immune cells or human Jurkat T cells. Each extract (25-200 ㎍/㎖)perse had no cytotoxic effect in unstimulated macrophages, but concentration-dependently regulated NO and PGE<sub>2</sub>production, iNOS expression, and COX-2 activity in mouse peritoneal macrophages with MAF stimulation. These regulatory effects were synergistically increased by their combination (Bowon-tang).Results : The extract of Bowon-tang concentration-dependently regulated T cell proliferation, CD4<sup>+</sup>and CD8<sup>+</sup>expression, and NK killing activity in mouse splenocytes and capping in Jurkat T cells.Conclusions : These results suggest that the water extract of Bowon-tang composited with thePanax, AstragalusandGRmay be useful for therapeutic drugs against a sickly constitution and immune diseases, probably by regulating the production of immune mediators.
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