PMID- 11056100 OWN - NLM STAT- MEDLINE DCOM- 20001121 LR - 20190623 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 102 IP - 18 DP - 2000 Oct 31 TI - Role of monocyte chemoattractant protein-1 in cardiovascular remodeling induced by chronic blockade of nitric oxide synthesis. PG - 2243-8 AB - BACKGROUND: Chronic inhibition of endothelial nitric oxide (NO) synthesis by the administration of N:(omega)-nitro-L-arginine methyl ester (L-NAME) to rats induces early vascular inflammatory changes (monocyte infiltration into coronary vessels and monocyte chemoattractant protein-1 [MCP-1] expression) as well as subsequent arteriosclerosis (medial thickening and perivascular fibrosis) and cardiac fibrosis. However, the role of MCP-1 in this process is not known. METHODS AND RESULTS: We investigated the effect of a specific monoclonal anti-MCP-1 neutralizing antibody in rats treated with L-NAME to determine the role of monocytes in the regulation of cardiovascular remodeling. We found increased expression of MCP-1 mRNA in vascular endothelial cells and monocytes in inflammatory lesions. Cotreatment with an anti-MCP-1 antibody, but not with control IgG, prevented the L-NAME-induced early inflammation and reduced late coronary vascular medial thickening. In contrast, the anti-MCP-1 antibody did not decrease the development of perivascular fibrosis, the expression of transforming growth factor (TGF)-beta(1) mRNA, or systolic pressure overload induced by L-NAME administration. CONCLUSIONS: These results suggest that MCP-1 is necessary for the development of medial thickening as well as monocyte recruitment. In contrast, the pathogenesis of fibrosis may involve other factors, such as TGF-beta(1). FAU - Koyanagi, M AU - Koyanagi M AD - Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. FAU - Egashira, K AU - Egashira K FAU - Kitamoto, S AU - Kitamoto S FAU - Ni, W AU - Ni W FAU - Shimokawa, H AU - Shimokawa H FAU - Takeya, M AU - Takeya M FAU - Yoshimura, T AU - Yoshimura T FAU - Takeshita, A AU - Takeshita A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Antibodies, Monoclonal) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) RN - 0 (Tgfb1 protein, rat) RN - 0 (Transforming Growth Factor beta) RN - 0 (Transforming Growth Factor beta1) RN - 9007-34-5 (Collagen) RN - EC 1.14.13.39 (Nitric Oxide Synthase) RN - EC 3.4.15.1 (Peptidyl-Dipeptidase A) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Animals MH - Antibodies, Monoclonal/pharmacology MH - Blood Pressure/drug effects MH - Cell Division/drug effects MH - Chemokine CCL2/antagonists & inhibitors/*metabolism/pharmacology MH - Chronic Disease MH - Collagen/biosynthesis/genetics MH - Coronary Artery Disease/chemically induced/*metabolism/pathology MH - Dermis/drug effects/pathology MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Fibrosis/pathology MH - Inflammation/chemically induced/pathology MH - Male MH - Monocytes/cytology/drug effects MH - Myocardium/metabolism MH - NG-Nitroarginine Methyl Ester MH - Nitric Oxide Synthase/*antagonists & inhibitors/metabolism MH - Peptidyl-Dipeptidase A/metabolism MH - RNA, Messenger/biosynthesis MH - Rats MH - Rats, Inbred WKY MH - Recombinant Proteins/antagonists & inhibitors/metabolism/pharmacology MH - Transforming Growth Factor beta/biosynthesis/genetics MH - Transforming Growth Factor beta1 MH - Ventricular Remodeling EDAT- 2000/11/01 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/11/01 11:00 PHST- 2000/11/01 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/11/01 11:00 [entrez] AID - 10.1161/01.cir.102.18.2243 [doi] PST - ppublish SO - Circulation. 2000 Oct 31;102(18):2243-8. doi: 10.1161/01.cir.102.18.2243.