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KMID : 0861020150300050067
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Korea Journal of Herbology
2015 Volume.30 No. 5 p.67 ~ p.74
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Effects of Haedokgumhwa-san Water Extracts on LPS-induced Inflammatory Response in Macrophage
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Lim Jae-Soo
Kang Ok-Hwa
Seo Yun-Soo
Kwon Dong-Yeul
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Abstract
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Objectives: The Haedokgumhwa-san water extract (HDKHS) is used in Korea, Japan and China as a traditional therapeutic agent to cure an infectious disease. But its study is not enough. Therefore, the present study focused on the elucidation of HDKHS to investigate the anti-inflammatory effects and to established the possible mechanisms involved in its action on LPS-stimulated immune response in murine macrophages.
Methods: Inflammatory status was induced by LPS and measured by increasement of inflammatory mediators. LPS induced secretions of NO and PGE2 in RAW 264.7 cells were measured using griess reagent and enzyme-linked immunosorbent assay (ELISA) kit respectively. production of IL-6 was examined using ELISA kit and expression of IL-6 mRNA was measured by RT-PCR method. To investigate the effects of HDKHS on inflammatory mediators, such as iNOS, COX-2 and MAPKs, western blot and RT-PCR were performed.
Results: HDKHS significantly reduced production of NO and PGE2 which were induced by LPS. Also, activation of IL-6 was reduced both protein and mRNA levels. The expressions of inflammatory mediator include iNOS and COX-2 were decreased by pretreatment with HDKHS. futhermore The result showed HDKHS down-regulate the LPS induced phosphorylation of ERK 1/2, one of the MAPK family, which is considered as a main regulator of transmission from pathogens to nucleus of immune cells.
Conclusions: Our results suggest that the anti-inflammatory properties of HDKHS may stem from the inhibition of pro-inflammatory mediators via suppression of initiation of inflammatory response by inhibiting MAPKs signaling pathways.
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KEYWORD
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Haedokgumhwa-san, Anti-inflammatory activity, Macrophages, Mitogen-activated protein kinases (MAPKs)
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