Importance of Monocyte Chemoattractant Protein-1 Pathway in Neointimal Hyperplasia After Periarterial Injury in Mice and Monkeys
作者:
Kensuke Egashira,
Qingwei Zhao,
Chu Kataoka,
Kishou Ohtani,
Makoto Usui,
Israel Charo,
Ken-ichi Nishida,
Shujiro Inoue,
Makoto Katoh,
Toshihiro Ichiki,
Akira Takeshita,
期刊:
Circulation Research: Journal of the American Heart Association
(OVID Available online 2002)
卷期:
Volume 90,
issue 11
页码: 1167-1172
ISSN:0009-7330
年代: 2002
出版商: OVID
关键词: remodeling;growth substances;inflammation;monocytes;gene transfer
数据来源: OVID
摘要:
Neointimal hyperplasia is a major cause of restenosis after coronary intervention. Because vascular injury is now recognized to involve an inflammatory response, monocyte chemoattractant protein-1 (MCP-1) might be involved in underlying mechanisms of restenosis. In the present study, we demonstrate the important role of MCP-1 in neointimal hyperplasia after cuff-induced arterial injury. In the first set of experiments, placement of a nonconstricting cuff around the femoral artery of intact mice and monkeys resulted in inflammation in the early stages and subsequent neointimal hyperplasia at the late stages. We transfected with an N-terminal deletion mutant of the human MCP-1 gene into skeletal muscles to block MCP-1 activity in vivo. This mutant MCP-1 works as a dominant-negative inhibitor of MCP-1. This strategy inhibited early vascular inflammation (monocyte infiltration, increased expression of MCP-1, and inflammatory cytokines) and late neointimal hyperplasia. In the second set of experiments, the cuff-induced neointimal hyperplasia was found to be less in CCR2-deficient mice than in control CCR2+/+mice. The MCP-1/CCR2 pathway plays a central role in the pathogenesis of neointimal hyperplasia in cuffed femoral artery of mice and monkeys. Therefore, the MCP-1/CCR2 pathway can be a therapeutic target for human restenosis after coronary intervention.
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