PMID- 15059935 OWN - NLM STAT- MEDLINE DCOM- 20041007 LR - 20220227 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 94 IP - 9 DP - 2004 May 14 TI - Critical role of monocyte chemoattractant protein-1 receptor CCR2 on monocytes in hypertension-induced vascular inflammation and remodeling. PG - 1203-10 AB - Activated monocytes are present in the arterial walls of hypertensive patients and animals. Monocyte chemoattractant protein-1 (MCP-1), which controls monocyte function through its receptor (CCR2), is implicated in hypertensive inflammatory changes in the arterial wall. The role of CCR2 expression on monocytes in hypertension-induced vascular remodeling, however, has not been addressed. We hypothesized that CCR2 on monocytes is critical in hypertension-induced vascular inflammation and remodeling. Hypertension was induced by infusion of angiotensin II (Ang II) into wild-type mice, CCR2-deficient (CCR2-/-) mice, and bone marrow-transferred mice with a leukocyte-selective CCR2 deficiency (BMT-CCR2-/-). In wild-type mice, Ang II increased CCR2 intensity in circulating monocytes, which was prevented by an Ang II type-1 (AT1) receptor blocker or blunted in AT1 receptor-deficient mice. Enhanced CCR2 intensity on monocytes was observed in hypertensive patients and rats, and was reduced by treatment with the Ang II receptor blocker, supporting the clinical relevance of the observation in mice. In CCR2-/- and BMT-CCR2-/- mice, Ang II-induced vascular inflammation and vascular remodeling (aortic wall thickening and fibrosis) were blunted as compared with control mice. In contrast, Ang II-induced left ventricular hypertrophy developed in CCR2-/- and BMT-CCR2-/- mice. The present study suggests that CCR2 expression in monocytes has a critical role in vascular inflammation and remodeling in Ang II-induced hypertension, and possibly in other forms of hypertension. FAU - Ishibashi, Minako AU - Ishibashi M AD - Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan. FAU - Hiasa, Ken-ichi AU - Hiasa K FAU - Zhao, Qingwei AU - Zhao Q FAU - Inoue, Shujiro AU - Inoue S FAU - Ohtani, Kisho AU - Ohtani K FAU - Kitamoto, Shiro AU - Kitamoto S FAU - Tsuchihashi, Miyuki AU - Tsuchihashi M FAU - Sugaya, Takeshi AU - Sugaya T FAU - Charo, Israel F AU - Charo IF FAU - Kura, Shinobu AU - Kura S FAU - Tsuzuki, Teruhisa AU - Tsuzuki T FAU - Ishibashi, Tatsuro AU - Ishibashi T FAU - Takeshita, Akira AU - Takeshita A FAU - Egashira, Kensuke AU - Egashira K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20040401 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (Angiotensin II Type 1 Receptor Blockers) RN - 0 (CCR2 protein, human) RN - 0 (Ccr2 protein, mouse) RN - 0 (Ccr2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Enzyme Inhibitors) RN - 0 (Imidazoles) RN - 0 (Receptor, Angiotensin, Type 1) RN - 0 (Receptors, CCR2) RN - 0 (Receptors, Chemokine) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Tetrazoles) RN - 11128-99-7 (Angiotensin II) RN - 6M97XTV3HD (Olmesartan Medoxomil) RN - EC 1.14.13.39 (NOS3 protein, human) RN - EC 1.14.13.39 (Nitric Oxide Synthase) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) RN - EC 1.14.13.39 (Nos3 protein, mouse) RN - EC 1.14.13.39 (Nos3 protein, rat) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Angiotensin II/toxicity MH - Angiotensin II Type 1 Receptor Blockers MH - Animals MH - Aorta/drug effects/metabolism MH - Bone Marrow Transplantation MH - Chemokine CCL2/biosynthesis/genetics MH - Chemotaxis, Leukocyte/physiology MH - Enzyme Inhibitors/pharmacology MH - Humans MH - Hypertension/chemically induced/*metabolism MH - Hypertrophy, Left Ventricular/etiology/metabolism MH - Imidazoles/pharmacology MH - Inflammation/metabolism MH - Infusion Pumps, Implantable MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Monocytes/drug effects/*physiology MH - NG-Nitroarginine Methyl Ester/pharmacology MH - Nitric Oxide Synthase/antagonists & inhibitors MH - Nitric Oxide Synthase Type II MH - Nitric Oxide Synthase Type III MH - Olmesartan Medoxomil MH - Pilot Projects MH - Radiation Chimera MH - Rats MH - Rats, Inbred SHR MH - Rats, Inbred WKY MH - Receptor, Angiotensin, Type 1/deficiency/genetics MH - Receptors, CCR2 MH - Receptors, Chemokine/deficiency/genetics/*physiology MH - Recombinant Fusion Proteins/physiology MH - Superoxide Dismutase/genetics MH - Tetrazoles/pharmacology MH - Up-Regulation/drug effects EDAT- 2004/04/03 05:00 MHDA- 2004/10/08 09:00 CRDT- 2004/04/03 05:00 PHST- 2004/04/03 05:00 [pubmed] PHST- 2004/10/08 09:00 [medline] PHST- 2004/04/03 05:00 [entrez] AID - 01.RES.0000126924.23467.A3 [pii] AID - 10.1161/01.RES.0000126924.23467.A3 [doi] PST - ppublish SO - Circ Res. 2004 May 14;94(9):1203-10. doi: 10.1161/01.RES.0000126924.23467.A3. Epub 2004 Apr 1.