PMID- 22005927 OWN - NLM STAT- MEDLINE DCOM- 20120430 LR - 20211020 IS - 1420-908X (Electronic) IS - 1023-3830 (Linking) VI - 61 IP - 1 DP - 2012 Jan TI - Curcumin inhibits ox-LDL-induced MCP-1 expression by suppressing the p38MAPK and NF-kappaB pathways in rat vascular smooth muscle cells. PG - 61-7 LID - 10.1007/s00011-011-0389-3 [doi] AB - OBJECTIVE: This study was designed to identify the inhibitory effect of curcumin on ox-LDL-induced monocyte chemoattractant protein-1 (MCP-1) production and investigated whether the effects are mediated by mitogen-activated protein kinase (MAPK) and NF-kappaB pathways in rat vascular smooth muscle cells (VSMCs). METHODS: The VSMCs cells were pretreated with curcumin, before stimulation with ox-LDL. The ox-LDL-induced MCP-1 expression was determined by enzyme-linked immunosorbent assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR). Intracellular signaling was investigated by Western blot. RESULTS: The concentrations of MCP-1 in cell supernatant and were upregulated by ox-LDL in a dose- and time-dependent manner. Additionally, curcumin decreased the expression of MCP-1 in a dose-dependent manner under treatment with ox-LDL (100 mug/ml). Signal transduction studies indicated that the ox-LDL-induced MCP-1 expression in VSMCs could be partly reversed by the inhibitor of p38 MAPK (SB203580) and NF-kappaB (BAY11-7082), whereas the ERK inhibitor (PD98059) and the JNK inhibitor (SP600125) had no effect. Western blot revealed that curcumin reduced ox-LDL- induced p38 MAPK phosphorylation and nuclear NF-kappaB p65 protein at the indicated concentration. CONCLUSION: Curcumin suppresses ox-LDL-induced MCP-1 expression in VSMCs via the p38 MAPK and NF-kappaB pathways, which suggests that the anti-inflammatory effect of curcumin is related to the down-regulation of MCP-1 expression and offers a new theoretical basis in the anti-inflammatory effects of curcumin. FAU - Zhong, Yi AU - Zhong Y AD - Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People's Republic of China. FAU - Liu, Tingrong AU - Liu T FAU - Guo, Zhigang AU - Guo Z LA - eng PT - Journal Article DEP - 20111018 PL - Switzerland TA - Inflamm Res JT - Inflammation research : official journal of the European Histamine Research Society ... [et al.] JID - 9508160 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Enzyme Inhibitors) RN - 0 (Lipoproteins, LDL) RN - 0 (NF-kappa B) RN - 0 (oxidized low density lipoprotein) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - IT942ZTH98 (Curcumin) SB - IM MH - Animals MH - Aorta/cytology MH - Cell Nucleus/metabolism MH - Cell Survival MH - Chemokine CCL2/*metabolism MH - Curcumin/*pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme Inhibitors/pharmacology MH - Gene Expression Regulation MH - Inflammation MH - Lipoproteins, LDL/*metabolism MH - Male MH - Muscle, Smooth, Vascular/*cytology MH - NF-kappa B/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors MH - p38 Mitogen-Activated Protein Kinases/*metabolism EDAT- 2011/10/19 06:00 MHDA- 2012/05/01 06:00 CRDT- 2011/10/19 06:00 PHST- 2011/08/07 00:00 [received] PHST- 2011/09/21 00:00 [accepted] PHST- 2011/10/19 06:00 [entrez] PHST- 2011/10/19 06:00 [pubmed] PHST- 2012/05/01 06:00 [medline] AID - 10.1007/s00011-011-0389-3 [doi] PST - ppublish SO - Inflamm Res. 2012 Jan;61(1):61-7. doi: 10.1007/s00011-011-0389-3. Epub 2011 Oct 18.