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  • Title: Eutigoside C inhibits the production of inflammatory mediators (NO, PGE(2), IL-6) by down-regulating NF-kappaB and MAP kinase activity in LPS-stimulated RAW 264.7 cells.
    Author: Lee HJ, Oh TH, Yoon WJ, Kang GJ, Yang EJ, Park SS, Lee NH, Kang HK, Yoo ES.
    Journal: J Pharm Pharmacol; 2008 Jul; 60(7):917-24. PubMed ID: 18549679.
    Abstract:
    Eutigoside C, a compound isolated from the leaves of Eurya emarginata, is thought to be an active anti-inflammatory compound which operates through an unknown mechanism. In the present study we investigated the molecular mechanisms of eutigoside C activity in lipopolysacchardide (LPS)-stimulated murine macrophage RAW 264.7 cells. Treatment with eutigoside C inhibited LPS-stimulated production of nitric oxide (NO), prostaglandin E(2) (PGE(2)) and interleukin-6 (IL-6). To further elucidate the mechanism of this inhibitory effect of eutigoside C, we studied LPS-induced nuclear factor (NF)-kappaB activation and mitogen-activated protein (MAP) kinase phosphorylation. Eutigoside C suppressed NF-kappaB DNA binding activity, interfering with nuclear translocation of NF-kappaB. Eutigoside C suppressed the phosphorylation of three MAP kinases (ERK1/2, JNK and p38). These results suggest that eutigoside C inhibits the production of inflammatory mediators (NO, PGE(2) and interleukin-6) by suppressing the activation and translocation of NF-kappaB and the phosphorylation of MAP kinases (ERK1/2, JNK and p38) in LPS-stimulated murine macrophage RAW 264.7 cells.
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