Abstract
Traditional Korea medicine, So-Cheong-Ryong-Tang (SCRT) also called as Xiao-qing-long-tang or Sho-seiru-to, contains eight species of medicinal plants and has been used for treating allergic diseases, such as allergic rhinitis and asthma, for hundreds of years in Asian countries. CD4 + T cells were highly purified by using magnetic bead from splenocytes of BALB/c mice. SCRT treatment slightly decreased the expression of cell surface protein CD69 on CD4 + T cell in the flow cytometry analysis. In RT-PCR analysis, SCRT increases the expression of IL-2 and IL2R-alpha mRNA, and decreases the expression of IL-4 mRNA, which is an important cytokine of Th2 cell development. On the other hand, SCRT treatment increases IFN-γ expression, which is one of the key cytokines for Th1 cell development. Present study implies that SCRT can correct Th2 dominant condition directly affecting to the CD4 + T cell without significantly depressing general T cell activities. These results also suggest that the effect on CD4 + T cell may be the one of key pharmacological effect point for treating IgE medicated allergic asthma by SCRT.
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