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Inhibition of lipopolysaccharide-induced iNOS and COX-2 expression by dehydroevodiamine through suppression of NF-kappa B activation in RAW 264.7 macrophages

机译:脱氢戊二胺通过抑制RAW 264.7巨噬细胞中NF-κB的活化来抑制脂多糖诱导的iNOS和COX-2表达

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摘要

Dehydroevodiamine is a major bioactive quinazoline alkaloid isolated from Evodiae Fructus. We investigated the anti-inflanimatory properties of dehydroevodiamine in RAW 264.7 murine macrophages. The results indicated that dehydroevodiamine inhibited the expression of LPS-induced NOS 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 E-2 (PGE(2)) and LPS-induced nuclear factor-kappa B (NF-kappa B). Therefore, we suggested that the effect of dehydroevodiamine-mediated inhibition of the expression LPS-induced NOS and COX-2 genes is due to under the suppression of NF-kappa B activation in the transcriptional level. (c) 2006 Elsevier Inc. All rights reserved.
机译:脱氢戊二胺是从吴茱E中分离出的主要生物活性喹唑啉生物碱。我们调查了脱氢戊二胺在RAW 264.7鼠巨噬细胞中的抗炎作用。结果表明,脱氢戊二胺可抑制LPS诱导的NOS和COX-2蛋白的表达,并通过RAW 264.7细胞的RT-PCR实验抑制其mRNA表达。此外,此化合物抑制LPS刺激的前列腺素E-2(PGE(2))和LPS诱导的核因子-κB(NF-κB)的水平。因此,我们认为脱氢戊二胺介导的对LPS诱导的NOS和COX-2基因表达的抑制作用是由于在转录水平上抑制NF-κB活化所致。 (c)2006 Elsevier Inc.保留所有权利。

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