PMID- 20940016 OWN - NLM STAT- MEDLINE DCOM- 20110324 LR - 20161125 IS - 1879-0712 (Electronic) IS - 0014-2999 (Linking) VI - 650 IP - 1 DP - 2011 Jan 10 TI - Dipyridamole inhibits lipopolysaccharide-induced cyclooxygenase-2 and monocyte chemoattractant protein-1 via heme oxygenase-1-mediated reactive oxygen species reduction in rat mesangial cells. PG - 445-50 LID - 10.1016/j.ejphar.2010.09.058 [doi] AB - Dipyridamole contributes to its beneficial effects on inflammatory responses in many cell types. The anti-inflammatory mechanisms of dipyridamole on glomerular mesangial cells are mostly uncharacterized. In this study, we monitored the influence of dipyridamole on the expression levels of cyclooxygenase-2 (COX-2) and monocyte chemoattractant protein-1 (MCP-1) in rat mesangial cells stimulated with lipopolysaccharide. Dipyridamole was found to inhibit lipopolysaccharide-induced COX-2 and MCP-1 expression, and reduced lipopolysaccharide-induced reactive oxygen species generation in rat mesangial cells. This inhibitory effect of dipyridamole is independent on cyclic AMP and cyclic GMP increase. Tin protoporphyrin IX (SnPP), a heme oxygenase-1(HO-1) inhibitor, blocked the inhibitory effect of dipyridamole on lipopolysaccharide-induced COX-2 and MCP-1 expression. By applying specific inhibitors in rat mesangial cells, ERK1/2 and p38 MAPK signaling pathways were demonstrated to be involved in the lipopolysaccharide-induced inflammatory responses, and were inhibited by SnPP and N-acetylcysteine treatment. Additionally, dipyridamole was also found to upregulate HO-1 in rat mesangial cells. Therefore, our data suggest that dipyridamole inhibits the expression of COX-2 and MCP-1 in lipopolysaccharide-treated rat mesangial cells via HO-1-mediated reactive oxygen species reduction. CI - Copyright (c) 2010 Elsevier B.V. All rights reserved. FAU - Chen, Yen-Cheng AU - Chen YC AD - Department of Internal Medicine, Taipei Medical University -Wan Fang Hospital, Taipei, Taiwan. FAU - Chen, Cheng-Hsien AU - Chen CH FAU - Ko, Wen-Sheng AU - Ko WS FAU - Cheng, Chung-Yi AU - Cheng CY FAU - Sue, Yuh-Mou AU - Sue YM FAU - Chen, Tso-Hsiao AU - Chen TH LA - eng PT - Journal Article DEP - 20101015 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Lipopolysaccharides) RN - 0 (Reactive Oxygen Species) RN - 64ALC7F90C (Dipyridamole) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Anti-Inflammatory Agents/pharmacology MH - Chemokine CCL2/*metabolism MH - Cyclooxygenase 2/*metabolism MH - Dipyridamole/*pharmacology MH - Gene Expression Regulation, Enzymologic/drug effects MH - Heme Oxygenase-1/*metabolism MH - Lipopolysaccharides/*antagonists & inhibitors/pharmacology MH - Mesangial Cells/*drug effects/enzymology/metabolism MH - Mitogen-Activated Protein Kinase 1/metabolism MH - Mitogen-Activated Protein Kinase 3/metabolism MH - Phosphorylation/drug effects MH - Rats MH - Reactive Oxygen Species/*metabolism MH - p38 Mitogen-Activated Protein Kinases/metabolism EDAT- 2010/10/14 06:00 MHDA- 2011/03/25 06:00 CRDT- 2010/10/14 06:00 PHST- 2010/01/22 00:00 [received] PHST- 2010/09/16 00:00 [revised] PHST- 2010/09/20 00:00 [accepted] PHST- 2010/10/14 06:00 [entrez] PHST- 2010/10/14 06:00 [pubmed] PHST- 2011/03/25 06:00 [medline] AID - S0014-2999(10)00979-9 [pii] AID - 10.1016/j.ejphar.2010.09.058 [doi] PST - ppublish SO - Eur J Pharmacol. 2011 Jan 10;650(1):445-50. doi: 10.1016/j.ejphar.2010.09.058. Epub 2010 Oct 15.