PMID- 11121811 OWN - NLM STAT- MEDLINE DCOM- 20020312 LR - 20190513 IS - 0008-6363 (Print) IS - 0008-6363 (Linking) VI - 49 IP - 1 DP - 2001 Jan TI - Transient interaction of activated platelets with endothelial cells induces expression of monocyte-chemoattractant protein-1 via a p38 mitogen-activated protein kinase mediated pathway. Implications for atherogenesis. PG - 189-99 AB - OBJECTIVE: Activated platelets induce alterations of chemotactic and adhesive properties of endothelial cells, a critical initial step in atherogenesis. We investigated the effect of transient interaction of activated platelets with cultured human umbilical vein endothelial cells (HUVECs) on secretion of monocyte chemoattractant protein-1 (MCP-1), a key molecule in monocyte chemotaxis and transmigration. METHODS AND RESULTS: Transient interaction of alpha-thrombin-activated platelets with endothelial cells for 10-120 min substantially induced endothelial secretion of MCP-1, monocyte chemotaxis and adhesion to HUVECs. Platelet-induced secretion of MCP-1 and monocyte-endothelium adhesion was reduced by the MAP kinase p38-specific inhibitor SB203580, but not by other kinase inhibitors including PD98059, wortmannin, or rapamycin. In addition, activated platelets induced transcription of a luciferase reporter construct containing a MCP-1 promotor, an effect that could be inhibited by SB203580. Overexpression of dominant-negative mutants of MAP kinase p38, CSBP2-(D168A) and CSBP2-(T180E,Y182E) reduced platelet-induced expression of MCP-1. CONCLUSIONS: Activation of the p38 MAP kinase and consecutive endothelial secretion of MCP-1 induced through transient interaction of activated platelets might play an important role in atherogenesis. FAU - Dickfeld, T AU - Dickfeld T AD - Medical Department, Duke University, Durham, NC, USA. FAU - Lengyel, E AU - Lengyel E FAU - May, A E AU - May AE FAU - Massberg, S AU - Massberg S FAU - Brand, K AU - Brand K FAU - Page, S AU - Page S FAU - Thielen, C AU - Thielen C FAU - Langenbrink, K AU - Langenbrink K FAU - Gawaz, M AU - Gawaz M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Cardiovasc Res JT - Cardiovascular research JID - 0077427 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Chemokine CCL2) RN - 0 (Enzyme Inhibitors) RN - 0 (Imidazoles) RN - 0 (Pyridines) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - OU13V1EYWQ (SB 203580) SB - IM MH - Anti-Inflammatory Agents/pharmacology MH - Arteriosclerosis/*etiology MH - Blood Platelets/*physiology MH - Cell Adhesion/physiology MH - Cell Culture Techniques MH - Chemokine CCL2/*metabolism MH - Chemotaxis, Leukocyte/physiology MH - Endothelium, Vascular/cytology/*metabolism MH - Enzyme Inhibitors/pharmacology MH - Humans MH - Imidazoles/pharmacology MH - Mitogen-Activated Protein Kinases/antagonists & inhibitors/genetics/*physiology MH - Monocytes/physiology MH - Platelet Activation/physiology MH - Pyridines/pharmacology MH - Translocation, Genetic MH - Umbilical Veins/cytology MH - p38 Mitogen-Activated Protein Kinases EDAT- 2000/12/21 11:00 MHDA- 2002/03/13 10:01 CRDT- 2000/12/21 11:00 PHST- 2000/12/21 11:00 [pubmed] PHST- 2002/03/13 10:01 [medline] PHST- 2000/12/21 11:00 [entrez] AID - S0008-6363(00)00220-0 [pii] AID - 10.1016/s0008-6363(00)00220-0 [doi] PST - ppublish SO - Cardiovasc Res. 2001 Jan;49(1):189-99. doi: 10.1016/s0008-6363(00)00220-0.