Objectives : The present study has been undertaken to investigate the effect of Kagam-Bojungikgitang (KBT) decoction on development of collagen-induced arthrtis (CIA) in DBAl J mice.
Methods : CIA was induced in UBAJ1 mice by immunization with bovine type II collagen (CIU and treatment with lipopolysacchride (LPS). KBT is the water extracts prepared from Ginseng Radix, Astragali Radix, Angelicae gigantis Radix, Astractylodis Rhizoma alba, Aurantii nobilis Pericarpium, Glycyrrhizae Radix, Artemisiae iwayomogii Herba, Scutellariae Radx. This is a modifitd prescription of Bojungikgitang, which has been used for the treatment of indigestion, and immunological disease in oriental countries. KBT was orally administered at difference doses. The incidence of arthritis, arthritis index, levels of tumor necrosis factor -alpha (TNF-a). interferon-gama (IFN-V), interleukin lbeta (IL-lP), IL - 3 . IL--10, II- 13. and prostaglandin E? (PGE.1 and cyclooxygenase~-2 (COX21 activity were investigated.
Results : KBT dose- dependently suppressed the release of T h l cytokines (TNF-a, IFN-.v, and IL-1 8 ) and inflammatory mediators (PGE? and COX--2 caused by immunization of CII and stimulation of 1,PS. KUT without cytotoxic effext. Kagam-bojunyikgitang´s Inhibitory effects were better than Ehjungikgitang in PGEz production and COX-2 expression. However, KBT increased markedly the production of Th:! cytokines (IL-4, IL 10, and IL -13). Therefor , KBT suppressed markedly the incidence of arthritis and arthritis index caused by immunization of CII and stimulation of LPS.
Conclusion : These results suggest that KBT suppress inflammatory mediators and regulates Th l and Th2 cytokmes. And these properties may contribute to the strong anti-arthritis of KBT.
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