PMID- 9024159 OWN - NLM STAT- MEDLINE DCOM- 19970311 LR - 20220227 IS - 0009-7322 (Print) IS - 0009-7322 (Linking) VI - 95 IP - 3 DP - 1997 Feb 4 TI - Induction of monocyte chemoattractant protein-1 in the small veins of the ischemic and reperfused canine myocardium. PG - 693-700 AB - BACKGROUND: Healing after myocardial infarction is characterized by the presence of macrophages in the infarcted area. Since augmented monocyte influx has been implicated as a potential mechanism for improved healing after reperfusion, we wished to study the induction of monocyte chemoattractant protein-1 (MCP-1) during reperfusion. METHODS AND RESULTS: The cDNA for MCP-1 was cloned from a canine jugular vein endothelial cell (CJVEC) library and exhibited 78% identity with the deduced amino acid sequence of human MCP-1. Samples of myocardium were taken from control and ischemic segments after 1 hour of ischemia and various times of reperfusion; total RNA was isolated from myocardial samples and probed with a cDNA probe for canine MCP-1. Induction of MCP-1 mRNA occurred only in previously ischemic segments within the first hour of reperfusion, peaked at 3 hours, and persisted throughout the first 2 days of reperfusion. In the absence of reperfusion, no significant MCP-1 induction was seen. Both ischemic (but not preischemic) cardiac lymph and human recombinant TNF-alpha induced MCP-1 in CJVECs. MCP-1 was identified by immunostaining on infiltrating cells and venular (but not arterial) endothelium by 3 hours. In contrast, in situ hybridization showed MCP-1 mRNA to be confined to the endothelium of small veins (venules) 10 to 70 microns in diameter. CONCLUSIONS: MCP-1 mRNA is induced in the endothelium of a specific class of small veins immediately after reperfusion. MCP-1 induction is confined to the previously ischemic area that has been reperfused. We suggest a significant role for MCP-1 in monocyte trafficking in the reperfused myocardium. FAU - Kumar, A G AU - Kumar AG AD - Methodist Hospital, DeBakey Heart Center, Department of Medicine, Houston, TX, USA. FAU - Ballantyne, C M AU - Ballantyne CM FAU - Michael, L H AU - Michael LH FAU - Kukielka, G L AU - Kukielka GL FAU - Youker, K A AU - Youker KA FAU - Lindsey, M L AU - Lindsey ML FAU - Hawkins, H K AU - Hawkins HK FAU - Birdsall, H H AU - Birdsall HH FAU - MacKay, C R AU - MacKay CR FAU - LaRosa, G J AU - LaRosa GJ FAU - Rossen, R D AU - Rossen RD FAU - Smith, C W AU - Smith CW FAU - Entman, M L AU - Entman ML LA - eng GR - AI-28071/AI/NIAID NIH HHS/United States GR - HL-42550/HL/NHLBI NIH HHS/United States GR - NS-32583/NS/NINDS NIH HHS/United States GR - etc. PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Cells, Cultured MH - Chemokine CCL2/genetics/*metabolism MH - Coronary Vessels/*metabolism MH - Dogs MH - Endothelium, Vascular/cytology/metabolism MH - Female MH - Humans MH - Jugular Veins/metabolism MH - Lymph/metabolism MH - Male MH - Molecular Sequence Data MH - Myocardial Ischemia/*metabolism MH - *Myocardial Reperfusion MH - RNA, Messenger/metabolism MH - Veins EDAT- 1997/02/04 00:00 MHDA- 1997/02/04 00:01 CRDT- 1997/02/04 00:00 PHST- 1997/02/04 00:00 [pubmed] PHST- 1997/02/04 00:01 [medline] PHST- 1997/02/04 00:00 [entrez] AID - 10.1161/01.cir.95.3.693 [doi] PST - ppublish SO - Circulation. 1997 Feb 4;95(3):693-700. doi: 10.1161/01.cir.95.3.693.