The Korea Journal of Herbology (대한본초학회지)

The Korea Association of Herbology (대한본초학회)
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Inhibitory effect of Mori Folium ethanol extract on pro-inflammatory mediator in lipopolysaccharide - activated RAW 264.7 cells

상엽(桑葉) 추출물의 LPS로 유도된 RAW 264.7 세포에서의 항염증 효과

  • 박상미 (대구한의대학교 한의과대학) ;
  • 변성희 (대구한의대학교 한의과대학) ;
  • 김영우 (대구한의대학교 한의과대학) ;
  • 조일제 (대구한의대학교 한의과대학) ;
  • 김상찬 (대구한의대학교 한의과대학)
  • Received : 2012.04.15
  • Accepted : 2012.04.28
  • Published : 2012.05.30
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Abstract

Objectives : Mori Folium is one of the traditional medicinal herb. It was commonly used for sericulture in the world and has been traditionally administered as natural therapeutic agent for the treatment of filariasis, diabetes and dropsy in East Asia. This study investigated an anti-inflammatory potential of Mori Folium ethanol extract (MFE). Methods : We examined the effects of MFE on the lipopolysaccharide (LPS)-induced production of nitric oxide (NO) and prostaglandin $E_2$ ($PGE_2$) in a murine macrophage cell line, RAW 264.7. Results : MFE inhibited production of NO and $PGE_2$ in a dose dependent manner and also decreased the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2, interleukin (IL)-1, IL-6 and tumor necrosis factor-${\alpha}$. As a plausible molecular mechanism, increased degradation of I-${\kappa}B{\alpha}$ and phosphorylation of I-${\kappa}B{\alpha}$, NF-${\kappa}B$ and MAP kinases by LPS were partly blocked by MFE treatment. Conclusions : These results suggest that MFE has an anti-inflammatory therapeutic potential, which may result from inhibition of NF-${\kappa}B$ activation and MAPK phosphorylation, thereby decreasing the expression of pro-inflammatory genes.

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