Scrophularia buergeriana regulates cytokine production in vitro
2009
The Scrophularia buergeriana (SB) has long been used to treat various diseases an account of its antimicrobial and anti-virus activity. However, it is unclear how SB regulates the immune responses. This study investigated the effect of SB on the production of cytokines in a human T-cell line, MOLT-4 cells, and mouse peritoneal macrophages. The MOLT-4 cells were cultured for 24 h in the presence or absence of SB plus concanavalin (con) A. SB plus con A significantly increased the level of interleukin (IL)-2, IL-4 and interferon (IFN)-γ production compared with that of con A alone (approximately 1.79-fold for IL-2, 2-fold for IL-4, and 1.85-fold for IFN-γ, p < 0.05). SB plus recombinant IFN-γ (rIFN-γ) increased the level of IL-12 and NO production compared with rIFN-γ alone. In addition, SB plus rIFN-γ increased the level the iNOS expression on mouse peritoneal macrophages. Overall, SB may have an immune-enhancement effect through cytokine production.
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