PMID- 11689197 OWN - NLM STAT- MEDLINE DCOM- 20011207 LR - 20190624 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 428 IP - 3 DP - 2001 Oct 12 TI - Effect of trapidil on effector functions of monocytes related to atherosclerotic plaque. PG - 371-9 AB - The infiltration and activation of inflammatory cells play an important role in the formation and stability of coronary atherosclerotic plaque in patients with acute coronary syndrome. In this study, we evaluated the effect of trapidil, an anti-platelet agent, on atheroma-related functions of human T cells and monocytes. Trapidil and anti-CD154 (CD40 ligand) antibody inhibited the increase of procoagulant activity in the mixed lymphocyte reaction; trapidil also suppressed the induction of tissue factor, monocyte chemoattractant protein-1 (MCP-1) and matrix metalloproteinase-9 in the mixed lymphocyte reaction. Trapidil did not alter CD154 expression on isolated T cells, but it diminished CD40 expression on isolated monocytes and human monocytic leukemia THP-1 cells stimulated with interferon-gamma. Moreover, trapidil reduced MCP-1 production of isolated monocytes and THP-1 cells stimulated with interferon-gamma plus CD154-transfected cells. This effect was not seen with other tested anti-platelet agents and coronary vasodilators. In conclusion, trapidil directly acts on monocytes/macrophages to lower their susceptibility to CD154 on T cells. FAU - Kato, Y AU - Kato Y AD - Research Center, Mochida Pharmaceutical Co., Ltd., 722 Jimba-aza-Uenohara, Gotemba, 412-8524, Shizuoka, Japan. yutakato@mochida.co.jp FAU - Tsuda, T AU - Tsuda T FAU - Hosaka, Y AU - Hosaka Y FAU - Takahashi, T AU - Takahashi T FAU - Shirakawa, K AU - Shirakawa K FAU - Furusako, S AU - Furusako S FAU - Mizuguchi, K AU - Mizuguchi K FAU - Mochizuki, H AU - Mochizuki H LA - eng PT - Comparative Study PT - Journal Article PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Antibodies, Monoclonal) RN - 0 (CD40 Antigens) RN - 0 (Chemokine CCL2) RN - 0 (Platelet Aggregation Inhibitors) RN - 147205-72-9 (CD40 Ligand) RN - 82115-62-6 (Interferon-gamma) RN - 9035-58-9 (Thromboplastin) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EYG5Y6355E (Trapidil) SB - IM MH - Animals MH - Antibodies, Monoclonal/pharmacology MH - Arteriosclerosis/pathology/*prevention & control MH - CD40 Antigens/biosynthesis MH - CD40 Ligand/biosynthesis/immunology MH - Cell Line MH - Chemokine CCL2/metabolism MH - Coculture Techniques MH - Dose-Response Relationship, Drug MH - Humans MH - Interferon-gamma/pharmacology MH - Lymphocyte Culture Test, Mixed MH - Matrix Metalloproteinase 9/drug effects/metabolism MH - Monocytes/*drug effects/metabolism/pathology MH - Platelet Aggregation Inhibitors/*pharmacology MH - T-Lymphocytes/drug effects/metabolism MH - Thromboplastin/biosynthesis/drug effects MH - Trapidil/*pharmacology MH - Tumor Cells, Cultured/drug effects/metabolism EDAT- 2001/11/02 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/11/02 10:00 PHST- 2001/11/02 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/11/02 10:00 [entrez] AID - S001429990101336X [pii] AID - 10.1016/s0014-2999(01)01336-x [doi] PST - ppublish SO - Eur J Pharmacol. 2001 Oct 12;428(3):371-9. doi: 10.1016/s0014-2999(01)01336-x.