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  • Title: Inhibition of lipopolysaccharide-induced iNOS and COX-2 expression by dehydroevodiamine through suppression of NF-kappaB activation in RAW 264.7 macrophages.
    Author: Noh EJ, Ahn KS, Shin EM, Jung SH, Kim YS.
    Journal: Life Sci; 2006 Jul 10; 79(7):695-701. PubMed ID: 16554073.
    Abstract:
    Dehydroevodiamine is a major bioactive quinazoline alkaloid isolated from Evodiae Fructus. We investigated the anti-inflammatory properties of dehydroevodiamine in RAW 264.7 murine macrophages. The results indicated that dehydroevodiamine inhibited the expression of LPS-induced iNOS and COX-2 proteins and suppressed also their mRNAs from RT-PCR experiment on RAW 264.7 cells. Furthermore, this compound inhibited the level of LPS-stimulated prostaglandin E2 (PGE2) and LPS-induced nuclear factor-kappa B (NF-kappaB). Therefore, we suggested that the effect of dehydroevodiamine-mediated inhibition of the expression LPS-induced iNOS and COX-2 genes is due to under the suppression of NF-kappaB activation in the transcriptional level.
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