LPS로 활성화된 대식세포에서 황련해독탕(黃連解毒湯)물추출물의 염증매개물질 억제효과 = Anti-inflammatory Effects of the Aqueous Extract of Hwangnyeonhaedok-tang in LPS-activated Macrophage CellsLPS로 활성화된 대식세포에서 황련해독탕(黃連解毒湯)물추출물의 염증매개물질 억제효과

다국어 초록 (Multilingual Abstract)

Objectives: Hwangnyeonhaedok-tang (Huanglian Jiedu Tang; HHT) has been widely used for purging `fire` and lessening virulence of any pathogenic organism. However it has been rarely conducted to evaluate the immuno-biological activity. In this study, we evaluated anti-inflammatory effects of HHT in LPS-activated Raw264.7 cells. Methods: Cells were treated with 1 μg/ml of LPS 1 h prior to the addition of HHT. Cell viability was measured by MTT assay. The production of NO was determined by reacting cultured medium with Griess reagent. PGE2 and proinflammatory cytokines were detected by ELISA. Expression of iNOS, COX-2, IκBα and NF-κB were analyzed by immunoblot analysis. Results: All three doses of HHT (0.03, 0.10 and 0.30 mg/ml) had no significant cytotoxicity during the entire experimental period. The levels of NO and PGE2 were dramatically augmented by LPS compared to control. However, HHT extract dose-dependently reduced these increases. Expression of iNOS and COX-2 protein were also decreased by treatment with HHT extract. Furthermore, HHT extract significantly reduced the nuclear translocation of NF-κB which is critical in regulating inflammation through transcription of iNOS and COX-2. In addition, HHT extract reduced the elevated production of inflammatory cytokines including TNF-α, IL-1β and IL-6. Conclusions: The results in this study demonstrate that HHT extract exerts anti-inflammatory activities through the inhibition of NO, PGE2 and proinflammatory cytokines production via the suppression of NF-κB.