PMID- 7954630 OWN - NLM STAT- MEDLINE DCOM- 19941221 LR - 20190512 IS - 0008-6363 (Print) IS - 0008-6363 (Linking) VI - 28 IP - 8 DP - 1994 Aug TI - Expression of intercellular adhesion molecule-1 on rat cardiac myocytes by monocyte chemoattractant protein-1. PG - 1258-62 AB - OBJECTIVE: Cytokine induction of intercellular adhesion molecule-1 (ICAM-1) on cardiac myocytes may be a critical step in cardiac inflammation associated with acute myocardial infarction and myocarditis. The aim of this study was to investigate the involvement of monocyte chemoattractant protein-1 (MCP-1), a homologue of mouse JE, in the neutrophil-myocyte adhesion in vitro. METHODS: MCP-1/JE and ICAM-1 mRNA expression in cultured neonatal rat cardiac myocytes was evaluated by northern blot analysis. ICAM-1 molecule content on myocytes was determined by ELISA. For adherence assay, myocytes and neutrophils were co-incubated and the number of bounded neutrophils was counted. RESULTS: MCP-1/JE transcripts were not clearly observed in cultured neonatal rat cardiac myocytes; however, its transcripts were clearly detected by exposure to interleukin 1 alpha (100 U.ml-1), lipopolysaccharide (1 microgram.ml-1), or hypoxia (95% N2 + 5% CO2). In ELISA analysis, the expression of ICAM-1 molecules on cardiac myocytes was significantly stimulated by MCP-1 in a dose dependent manner, and the effect of MCP-1 was observed as early as at 6 h. In northern blot analysis, ICAM-1 mRNA expression was constitutively observed in myocytes, and the expression was markedly stimulated by exposure to MCP-1 with a peak elevation at 2 h. In adherence assay, MCP-1 stimulated the adhesion of rat neutrophils to rat cardiac myocytes, and this effect of MCP-1 was inhibited by an anti-ICAM-1 MAb. CONCLUSIONS: These results suggest that cardiac myocytes produce MCP-1, which could in turn promote the adhesion of neutrophils to myocytes via ICAM-1 expression, suggesting the involvement of MCP-1 in cardiac inflammation associated with acute myocardial infarction and myocarditis. FAU - Ban, K AU - Ban K AD - Jichi Medical School, Tochigi, Japan. FAU - Ikeda, U AU - Ikeda U FAU - Takahashi, M AU - Takahashi M FAU - Kanbe, T AU - Kanbe T FAU - Kasahara, T AU - Kasahara T FAU - Shimada, K AU - Shimada K 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 (Chemokine CCL2) RN - 0 (Chemotactic Factors) RN - 0 (Cytokines) RN - 0 (RNA, Messenger) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) SB - IM MH - Animals MH - Blotting, Northern MH - Cell Adhesion MH - Cells, Cultured MH - Chemokine CCL2 MH - Chemotactic Factors/genetics/*pharmacology MH - Cytokines/genetics/*pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Gene Expression MH - Intercellular Adhesion Molecule-1/*genetics MH - Myocardium/cytology/*metabolism MH - Neutrophils/cytology MH - RNA, Messenger/analysis MH - Rats MH - Rats, Sprague-Dawley MH - Stimulation, Chemical EDAT- 1994/08/01 00:00 MHDA- 1994/08/01 00:01 CRDT- 1994/08/01 00:00 PHST- 1994/08/01 00:00 [pubmed] PHST- 1994/08/01 00:01 [medline] PHST- 1994/08/01 00:00 [entrez] AID - 0008-6363(94)90365-4 [pii] AID - 10.1093/cvr/28.8.1258 [doi] PST - ppublish SO - Cardiovasc Res. 1994 Aug;28(8):1258-62. doi: 10.1093/cvr/28.8.1258.