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Abstract Title:

Anti-inflammatory effects of eriodictyol in lipopolysaccharide-stimulated raw 264.7 murine macrophages.

Abstract Source:

Arch Pharm Res. 2011 Apr ;34(4):671-9. Epub 2011 May 5. PMID: 21544733

Abstract Author(s):

Jae Kwon Lee

Article Affiliation:

Jae Kwon Lee

Abstract:

Flavonoids have biological activities including anti-allergic, anti-inflammatory, antimicrobial and anticancer activities shown from in vitro studies. Of these biological activities, the anti-inflammatory capacity of flavonoids has long been emphasized in Chinese medicine. In this study, I investigated that what flavonoid can be applied to the suppression of lipopolysaccharide (LPS)-induced inflammatory responses in macrophages among the four similar structure flavonoids. Eriodictyol was found to reduce nitric oxide (NO) production from LPS-stimulated Raw 264.7 cells in non-cytotoxic concentrations. Moreover, eriodictyol strongly suppressed the phagocytic activity of activated macrophages. Pre-treatment of Raw 264.7 cells with eriodictyol reduced the expression of mRNA and the secretion of pro-inflammatory cytokines. These inhibitory effects were found to be caused by blockage of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activation and phosphorylation of p38 mitogen-activated protein kinase (MAPK), extracellular signal-regulated kinases 1 and 2 (ERK1/2) and c-Jun N-terminal kinase (JNK).

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Sayer Ji
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