PMID- 21282555 OWN - NLM STAT- MEDLINE DCOM- 20110414 LR - 20211020 IS - 1524-4563 (Electronic) IS - 0194-911X (Print) IS - 0194-911X (Linking) VI - 57 IP - 3 DP - 2011 Mar TI - Addition of angiotensin II type 1 receptor blocker to CCR2 antagonist markedly attenuates crescentic glomerulonephritis. PG - 586-93 LID - 10.1161/HYPERTENSIONAHA.110.165704 [doi] AB - The monocyte chemoattractant protein-1 (MCP-1)/CC-chemokine receptor 2 (CCR2) pathway plays a critical role in the development of antiglomerular basement membrane (anti-GBM) nephritis. We recently showed angiotensin II (Ang II) infusion in rats activated MCP-1 and transforming growth factor-beta1 (TGF-beta1), which in turn induced macrophage infiltration of renal tissues. This study was performed to demonstrate that combination therapy with a CCR2 antagonist (CA) and an Ang II type 1 receptor blocker (ARB) ameliorated renal injury in the anti-GBM nephritis model. An anti-GBM nephritis rat model developed progressive proteinuria and glomerular crescent formation, accompanied by increased macrophage infiltration and glomerular expression of MCP-1, angiotensinogen, Ang II, and TGF-beta1. Treatment with CA alone or ARB alone moderately ameliorated kidney injury; however, the combination treatment with CA and ARB dramatically prevented proteinuria and markedly reduced glomerular crescent formation. The combination treatment also suppressed the induction of macrophage infiltration, MCP-1, angiotensinogen, Ang II, and TGF-beta1 and reversed the fibrotic change in the glomeruli. Next, primary cultured glomerular mesangial cells (MCs) stimulated by Ang II showed significant increases in MCP-1 and TGF-beta1 expression. Furthermore, cocultured model consisting of MCs, parietal epithelial cells, and macrophages showed an increase in Ang II-induced cell proliferation and collagen secretion. ARB treatment attenuated these augmentations. These data suggest that Ang II enhances glomerular crescent formation of anti-GBM nephritis. Moreover, our results demonstrate that inhibition of the MCP-1/CCR2 pathway with a combination of ARB effectively reduces renal injury in anti-GBM nephritis. FAU - Urushihara, Maki AU - Urushihara M AD - Department of Physiology and Hypertension and Renal Center of Excellence, Tulane University Health Sciences Center, New Orleans, LA 70112-2699, USA. FAU - Ohashi, Naro AU - Ohashi N FAU - Miyata, Kayoko AU - Miyata K FAU - Satou, Ryousuke AU - Satou R FAU - Acres, Omar W AU - Acres OW FAU - Kobori, Hiroyuki AU - Kobori H LA - eng GR - R01 DK072408/DK/NIDDK NIH HHS/United States GR - R01DK072408/DK/NIDDK NIH HHS/United States GR - R01 DK072408-01A1/DK/NIDDK NIH HHS/United States GR - P20 RR017659/RR/NCRR NIH HHS/United States GR - P20RR017659/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20110131 PL - United States TA - Hypertension JT - Hypertension (Dallas, Tex. : 1979) JID - 7906255 RN - 0 (Angiotensin II Type 1 Receptor Blockers) RN - 0 (Chemokine CCL2) RN - 0 (Receptors, CCR2) RN - 0 (Transforming Growth Factor beta1) RN - 11128-99-7 (Angiotensin II) SB - IM MH - Analysis of Variance MH - Angiotensin II/*pharmacology MH - Angiotensin II Type 1 Receptor Blockers/*pharmacology MH - Animals MH - Anti-Glomerular Basement Membrane Disease/*drug therapy/metabolism MH - Blood Pressure/*drug effects MH - Cell Proliferation/drug effects MH - Chemokine CCL2/metabolism MH - Disease Models, Animal MH - Enzyme-Linked Immunosorbent Assay MH - Immunohistochemistry MH - Kidney/*drug effects/metabolism MH - Macrophages/drug effects/metabolism MH - Male MH - Rats MH - Rats, Inbred WKY MH - Receptors, CCR2/*antagonists & inhibitors MH - Renin-Angiotensin System/physiology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Transforming Growth Factor beta1/metabolism PMC - PMC3048031 MID - NIHMS275398 EDAT- 2011/02/02 06:00 MHDA- 2011/04/16 06:00 PMCR- 2011/03/03 CRDT- 2011/02/02 06:00 PHST- 2011/02/02 06:00 [entrez] PHST- 2011/02/02 06:00 [pubmed] PHST- 2011/04/16 06:00 [medline] PHST- 2011/03/03 00:00 [pmc-release] AID - HYPERTENSIONAHA.110.165704 [pii] AID - 10.1161/HYPERTENSIONAHA.110.165704 [doi] PST - ppublish SO - Hypertension. 2011 Mar;57(3):586-93. doi: 10.1161/HYPERTENSIONAHA.110.165704. Epub 2011 Jan 31.