PMID- 25270720 OWN - NLM STAT- MEDLINE DCOM- 20150713 LR - 20141114 IS - 1532-2513 (Electronic) IS - 0892-3973 (Linking) VI - 36 IP - 6 DP - 2014 Dec TI - Atractylenolide I inhibits lipopolysaccharide-induced inflammatory responses via mitogen-activated protein kinase pathways in RAW264.7 cells. PG - 420-5 LID - 10.3109/08923973.2014.968256 [doi] AB - Atractylenolide I (ATL-I) is a bioactive component of Rhizoma Atractylodis macrocephalae. Although increasing evidence shows that ATL-I has an anti-inflammatory effect, the anti-inflammatory molecular mechanism of ATL-I is still unknown. In this study, we investigated the effect of ATL-I on cell viability by 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) assay and the level of interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-alpha) by enzyme-linked immunosorbent assay (ELISA) in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Further, we examined the effect of ATL-I on the activation of nuclear factor-kappaB (NF-kappaB) and phosphorylation of extracellular signal regulated kinase 1/2 (ERK1/2) and p38 mitogen-activated protein kinase (p38) by Western blot. We also investigated the effect of ATL-I on the expression of myeloid differentiation protein-2 (MD-2), CD14, complement receptor 3 (CR3), scavenger receptor class A (SR-A), toll-like receptor 4 (TLR4) and myeloid differentiation factor 88 (MyD88). We found that ATL-I showed no inhibitory effect on cell viability at concentrations ranging from 1 microM to 100 microM and markedly reduced the release of IL-6 and TNF-alpha at a concentrate-dependent manner. In addition, ATL-I suppressed the activity of nuclear NF-kappaB and the phosphorylation of ERK1/2 and p38 in LPS-treated RAW264.7 cells. Further analysis showed that ATL-I inhibited the expression of MD-2, CD14, SR-A, TLR4 and MyD88, but the expression of CR3 was unaffected. These data suggest that ATL-I shows an anti-inflammatory effect by inhibiting TNF-alpha and IL-6 production. The anti-inflammatory effects of ATL-I may be associated with the inhibition of the NF-kappaB, ERK1/2 and p38 signaling pathways. FAU - Ji, Guangquan AU - Ji G AD - College of Light Industry and Food Sciences, South China University of Technology , Guangzhou , China and. FAU - Chen, Renqiong AU - Chen R FAU - Zheng, Jianxian AU - Zheng J LA - eng PT - Journal Article DEP - 20141001 PL - England TA - Immunopharmacol Immunotoxicol JT - Immunopharmacology and immunotoxicology JID - 8800150 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Interleukin-6) RN - 0 (Lactones) RN - 0 (Lipopolysaccharides) RN - 0 (Sesquiterpenes) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (atractylenolide I) SB - IM MH - Animals MH - Anti-Inflammatory Agents/*pharmacology MH - Blotting, Western MH - Cell Culture Techniques MH - Cell Line MH - Cell Survival/drug effects MH - Interleukin-6/biosynthesis/immunology MH - Lactones/*pharmacology MH - Lipopolysaccharides/*pharmacology MH - MAP Kinase Signaling System/*drug effects MH - Macrophages/*drug effects/enzymology/*immunology MH - Mice MH - Sesquiterpenes/*pharmacology MH - Tumor Necrosis Factor-alpha/biosynthesis/immunology OTO - NOTNLM OT - Atractylenolide I OT - MAPK OT - NF-kappaB OT - macrophage OT - tumor necrosis factor alpha EDAT- 2014/10/02 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/10/02 06:00 PHST- 2014/10/02 06:00 [entrez] PHST- 2014/10/02 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - 10.3109/08923973.2014.968256 [doi] PST - ppublish SO - Immunopharmacol Immunotoxicol. 2014 Dec;36(6):420-5. doi: 10.3109/08923973.2014.968256. Epub 2014 Oct 1.