PMID- 16834927 OWN - NLM STAT- MEDLINE DCOM- 20060809 LR - 20161124 IS - 0366-6999 (Print) IS - 0366-6999 (Linking) VI - 119 IP - 13 DP - 2006 Jul 5 TI - Advanced oxidation protein products induce monocyte chemoattractant protein-1 expression via p38 mitogen-activated protein kinase activation in rat vascular smooth muscle cells. PG - 1088-93 AB - BACKGROUND: Advanced oxidation protein products (AOPPs) are new uremic toxins reported by Witko-Sarsat in 1996, which are associated with the pathogenesis of atherosclerosis. However, the mechanisms by which AOPPs enhance atherosclerosis have not been fully understood. Monocyte chemoattractant protein-1 (MCP-1) is a chemokine which stimulates migration of monocytes and plays a critical role in the development of atherosclerosis. In this study, we investigated the effect of AOPPs on MCP-1 expression in cultured vascular smooth muscle cells (VSMCs). METHODS: VSMCs were cultured and then co-incubated with AOPP (200 micromol/L, 400 micromol/L) for different times with or without pretreatment with specific p38 mitogen-activated protein kinase (MAPK) inhibitor SB203580. RT-PCR and Western blott were used to detect MCP-1 mRNA and protein expression at different time points after AOPP stimulation in rat smooth muscle cells. Western blot was used to detect the expression of phosphorylated p38 MAPK. RESULTS: Treatment of VSMC with AOPPs resulted in a significant increase of the expression of MCP-1 mRNA and protein in time- and dose-dependent manner, and could activated p38 MAPK. Pretreatment of VSMCs with SB203580 resulted in a dose-dependent inhibition of AOPPs-induced MCP-1 mRNA and protein expression. CONCLUSIONS: AOPPs can stimulate MCP-1 expression via p38 MAPK in VSMCs. This suggests that AOPPs might contribute to the formation of atherosclerosis through this proinflammatory effect. FAU - Peng, Kan-fu AU - Peng KF AD - Department of Nephrology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China. FAU - Wu, Xiong-fei AU - Wu XF FAU - Zhao, Hong-wen AU - Zhao HW FAU - Sun, Yan AU - Sun Y LA - eng PT - Journal Article PL - China TA - Chin Med J (Engl) JT - Chinese medical journal JID - 7513795 RN - 0 (Chemokine CCL2) RN - 0 (Imidazoles) RN - 0 (Proteins) RN - 0 (Pyridines) RN - 0 (RNA, Messenger) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - OU13V1EYWQ (SB 203580) SB - IM MH - Animals MH - Atherosclerosis/*etiology MH - Cardiovascular Diseases/etiology MH - Cells, Cultured MH - Chemokine CCL2/*genetics MH - Enzyme Activation MH - Imidazoles/pharmacology MH - Kidney Failure, Chronic/complications MH - Male MH - Muscle, Smooth, Vascular/cytology/*metabolism MH - Myocytes, Smooth Muscle/*metabolism MH - Oxidation-Reduction MH - Proteins/*metabolism MH - Pyridines/pharmacology MH - RNA, Messenger/analysis MH - Rats MH - Rats, Sprague-Dawley MH - Uremia/*metabolism MH - p38 Mitogen-Activated Protein Kinases/*physiology EDAT- 2006/07/13 09:00 MHDA- 2006/08/10 09:00 CRDT- 2006/07/13 09:00 PHST- 2006/07/13 09:00 [pubmed] PHST- 2006/08/10 09:00 [medline] PHST- 2006/07/13 09:00 [entrez] PST - ppublish SO - Chin Med J (Engl). 2006 Jul 5;119(13):1088-93.