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Anti-Inflammatory Effect of Fermented Liriope platyphylla Extract in LPS-stimulated RAW 264.7 Macrophages

  • Lee, Hyun-Ah (Department of Food Science and Nutrition, Pusan National University) ;
  • Han, Ji-Sook (Department of Food Science and Nutrition, Pusan National University)
  • Received : 2011.08.11
  • Accepted : 2011.11.17
  • Published : 2011.12.31

Abstract

The present study was designed to evaluate the inhibitory effects of fermented Liriope platyphylla extract on the production of inflammation-related mediators (NO, ROS, NF-${\kappa}B$, iNOS and COX-2) and pro-inflammatory cytokines (TNF-${\alpha}$, IL-$1{\beta}$, IL-6) in lipopolysaccharide-stimulated RAW 264.7 macrophages. Freeze-dried Liriope platyphylla was fermented by Saccharomyces cerevisiae and extracted with 70% ethanol. In lipopolysaccharide-stimulated macrophage cells, the treatment with fermented Liriope platyphylla extract decreased the generation of intracellular reactive oxygen species dose-dependently and increased antioxidant enzyme activities, including superoxide dismutase, catalase and glutathione peroxidase. Fermented Liriope platyphylla extract also inhibited NO production in lipopolysaccharide-stimulated RAW 264.7 cell. The expressions of NF-${\kappa}B$, iNOS, COX-2 and pro-inflammatory cytokines were inhibited by the treatment with fermented Liriope platyphylla extract. Thus, this study shows the fermented Liriope platyphylla extract could be effective at inhibiting the inflammation process.

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