PMID- 10364084 OWN - NLM STAT- MEDLINE DCOM- 19990625 LR - 20220409 IS - 1079-5642 (Print) IS - 1079-5642 (Linking) VI - 19 IP - 6 DP - 1999 Jun TI - Monocyte chemoattractant protein-1 accelerates atherosclerosis in apolipoprotein E-deficient mice. PG - 1518-25 AB - The pro-inflammatory chemokine, monocyte chemoattractant protein-1 (MCP-1), plays a fundamental role in monocyte recruitment and has been implicated as a contributing factor to atherosclerosis. The predominant cell types within the vessel wall--endothelial cells, smooth muscle cells, and macrophages--all contribute to overexpression of MCP-1 in atherosclerotic tissue. In this report we assess the role of MCP-1 expression by leukocytes on lesion progression in a murine model susceptible to atherosclerosis. Bone marrow cells from mice overexpressing a murine MCP-1 transgene on a background of apoE-deficiency or from control mice were transplanted into irradiated apoE-knockout mice. After repopulation of apoE-knockout mice with bone marrow containing the MCP-1 transgene, macrophages expressing the MCP-1 transgene were found in several tissues, including the aorta. Qualitative assessment of atherosclerosis in these mice revealed increased lipid staining, a 3-fold (P<0.001) increase in the amount of oxidized lipid, and increased immunostaining for macrophage cell surface markers with anti-F4/80 and anti-CD11b antibodies. There were no differences in plasma lipids, plasma lipoprotein profiles, or body weight between the 2 groups. These results provide the first direct evidence that MCP-1 expression by leukocytes, predominately macrophages, increases the progression of atherosclerosis by increasing both macrophage numbers and oxidized lipid accumulation. FAU - Aiello, R J AU - Aiello RJ AD - Department of Metabolic Disease, Central Research Division, Pfizer Inc, Groton, Conn, USA. robert_j_aiello@groton.pfizer.com FAU - Bourassa, P A AU - Bourassa PA FAU - Lindsey, S AU - Lindsey S FAU - Weng, W AU - Weng W FAU - Natoli, E AU - Natoli E FAU - Rollins, B J AU - Rollins BJ FAU - Milos, P M AU - Milos PM LA - eng PT - Journal Article PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (Apolipoproteins E) RN - 0 (Chemokine CCL2) RN - 0 (Lipids) RN - 0 (Lipoproteins, LDL) RN - 0 (Macrophage-1 Antigen) RN - 0 (RNA, Messenger) RN - 0 (oxidized low density lipoprotein) SB - IM MH - Animals MH - Apolipoproteins E/*deficiency MH - Arteriosclerosis/*etiology MH - Chemokine CCL2/genetics/*physiology MH - Lipids/blood MH - Lipoproteins, LDL/metabolism MH - Macrophage-1 Antigen/analysis MH - Macrophages/chemistry MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - RNA, Messenger/analysis EDAT- 1999/06/11 00:00 MHDA- 1999/06/11 00:01 CRDT- 1999/06/11 00:00 PHST- 1999/06/11 00:00 [pubmed] PHST- 1999/06/11 00:01 [medline] PHST- 1999/06/11 00:00 [entrez] AID - 10.1161/01.atv.19.6.1518 [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 1999 Jun;19(6):1518-25. doi: 10.1161/01.atv.19.6.1518.