PMID- 15178560 OWN - NLM STAT- MEDLINE DCOM- 20050210 LR - 20131121 IS - 1524-4636 (Electronic) IS - 1079-5642 (Linking) VI - 24 IP - 8 DP - 2004 Aug TI - Cholesterol-lowering independent regression and stabilization of atherosclerotic lesions by pravastatin and by antimonocyte chemoattractant protein-1 therapy in nonhuman primates. PG - 1522-8 AB - OBJECTIVE: Anti-atherosclerotic effects of statins might be mediated partly by pleiotropic cholesterol-lowering independent mechanisms. We used nonhuman primates and examined whether treatment with pravastatin or antimonocyte chemoattractant protein-1 (MCP-1) therapy can induce regression and stabilization of established atherosclerotic lesions through cholesterol-lowering independent mechanisms. METHODS AND RESULTS: Advanced atherosclerosis was induced in the abdominal aorta and the common iliac artery of cynomolgus monkeys by undergoing balloon injury and giving atherogenic diet for 6 months. At 6 months, the diet was changed to normal chow, and the animals were allocated to 4 treatment groups: control vehicle group and other groups treated with pravastatin (1 or 10 mg/kg) or with mutant MCP-1 gene transfection for additional 6 months. Each compound was treated instead of the atherogenic diet, and cholesterol contents in pravastatin-treated groups were adjusted to equalize plasma cholesterol level among groups. Pravastatin reduced neointimal formation in the aorta, but not in the common iliac artery. Pravastatin reduced intimal macrophage area and other markers of plaque destabilization in the common iliac artery. Equivalent inhibitory effects were observed in animals that received mutant MCP-1 gene transfection. No serious side effects were noted by 2 therapeutic modalities. CONCLUSIONS: This study demonstrated cholesterol-lowering independent regression and stabilization of established atherosclerotic lesions by pravastatin and by anti-MCP-1 therapy in nonhuman primates. An anti-inflammatory mechanism may be involved in the beneficial effects of pravastatin. FAU - Kitamoto, Shiro AU - Kitamoto S AD - Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. FAU - Nakano, Kaku AU - Nakano K FAU - Hirouchi, Yasuhiko AU - Hirouchi Y FAU - Kohjimoto, Yoshiro AU - Kohjimoto Y FAU - Kitajima, Shunichi AU - Kitajima S FAU - Usui, Makoto AU - Usui M FAU - Inoue, Shujiro AU - Inoue S FAU - Egashira, Kensuke AU - Egashira K LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20040603 PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Anticholesteremic Agents) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (DNA, Complementary) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin M) RN - 11128-99-7 (Angiotensin II) RN - 97C5T2UQ7J (Cholesterol) RN - EC 3.4.15.1 (Peptidyl-Dipeptidase A) RN - EC 3.4.23.15 (Renin) RN - KXO2KT9N0G (Pravastatin) SB - IM MH - Angiotensin II/blood MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology/therapeutic use MH - Anticholesteremic Agents/pharmacology/therapeutic use MH - Aorta, Abdominal/injuries/pathology MH - Aortic Diseases/blood/*drug therapy MH - Arteriosclerosis/blood/*drug therapy/etiology MH - Catheterization MH - Chemokine CCL2/antagonists & inhibitors/chemistry/*genetics/immunology MH - Chemotaxis MH - Cholesterol/blood MH - Cytokines/blood MH - DNA, Complementary/genetics MH - Diet, Atherogenic MH - Drug Evaluation, Preclinical MH - *Genetic Therapy MH - Hydroxymethylglutaryl-CoA Reductase Inhibitors/*pharmacology/therapeutic use MH - Hypercholesterolemia/blood/complications/drug therapy MH - Iliac Artery/injuries/pathology MH - Immunoglobulin G/biosynthesis/immunology MH - Immunoglobulin M/biosynthesis/immunology MH - Inflammation MH - Macaca fascicularis MH - Male MH - Peptidyl-Dipeptidase A/blood MH - Phenotype MH - Pravastatin/*pharmacology/therapeutic use MH - Random Allocation MH - Renin/blood MH - Transfection EDAT- 2004/06/05 05:00 MHDA- 2005/02/11 09:00 CRDT- 2004/06/05 05:00 PHST- 2004/06/05 05:00 [pubmed] PHST- 2005/02/11 09:00 [medline] PHST- 2004/06/05 05:00 [entrez] AID - 01.ATV.0000134518.27241.da [pii] AID - 10.1161/01.ATV.0000134518.27241.da [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 2004 Aug;24(8):1522-8. doi: 10.1161/01.ATV.0000134518.27241.da. Epub 2004 Jun 3.