PMID- 12882873 OWN - NLM STAT- MEDLINE DCOM- 20031104 LR - 20190516 IS - 0149-5992 (Print) IS - 0149-5992 (Linking) VI - 26 IP - 8 DP - 2003 Aug TI - ACE inhibitors improve diabetic nephropathy through suppression of renal MCP-1. PG - 2421-5 AB - OBJECTIVE: Chemokines play an important role in the pathogenesis of diabetic nephropathy. Angiotensin II induces several fibrogenic chemokines, namely monocyte chemoattractant protein-1 (MCP-1) and transforming growth factor-beta. The progression of diabetic nephropathy can be retarded by ACE inhibitors (ACEIs) in patients with type 1 and type 2 diabetes. We examined if blockade of the renin-angiotensin system lowered urinary levels of the chemokine MCP-1 and correlated urinary MCP-1 (uMCP-1) with parameters of renal function and glucose and lipid metabolism before and after 1 year of treatment with an ACE inhibitor. RESEARCH DESIGN AND METHODS: In 22 patients with type 2 diabetes and diabetic nephropathy in stages 3-5, treatment with the ACEI lisinopril was initiated. Before treatment and after 12 months of continuous therapy, proteinuria, creatinine clearance, uMCP-1 levels, BMI, HbA(1c), and serum cholesterol were assessed. RESULTS: Lisinopril treatment improved renal function. Proteinuria decreased from 410 +/- 662 mg per 24 h to 270 +/- 389 mg per 24 h. Creatinine clearance rose from 61 +/- 26 to 77 +/- 41 ml/min. Urinary MCP-1 levels decreased from 0.456 +/- 0.22 ng/mg creatinine to 0.08 +/- 0.096 ng/mg creatinine. The change in uMCP-1 correlated significantly (r = 0.61, P < 0.001) with the change in proteinuria. No other parameter correlated with the improvement in renal function. CONCLUSIONS: Blockade of the renin-angiotensin system in type 2 diabetic patients with diabetic nephropathy reduces uMCP-1 levels and improves renal function. Because MCP-1 induces monocyte immigration and differentiation to macrophages, which augment extracellular matrix production and tubulointerstitial fibrosis, pharmacological reduction of angiotensin II may also exert its beneficial effects in diabetic nephropathy by downregulation of renal MCP-1. FAU - Amann, Berthold AU - Amann B AD - Kamillianer Hospital Monchengladbach, Monchengladbach, Germany. berthold.amann@gmx.de FAU - Tinzmann, Ralph AU - Tinzmann R FAU - Angelkort, Bernhard AU - Angelkort B LA - eng PT - Clinical Trial PT - Journal Article PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Angiotensin-Converting Enzyme Inhibitors) RN - 0 (Chemokine CCL2) RN - E7199S1YWR (Lisinopril) SB - IM MH - Adult MH - Aged MH - Angiotensin-Converting Enzyme Inhibitors/*therapeutic use MH - Chemokine CCL2/*metabolism MH - Diabetes Mellitus, Type 2/drug therapy/metabolism MH - Diabetic Nephropathies/*drug therapy/metabolism MH - Female MH - Humans MH - Hypertension, Renal/drug therapy/metabolism MH - Kidney/metabolism MH - Lisinopril/*therapeutic use MH - Male MH - Middle Aged MH - Proteinuria/drug therapy/metabolism MH - Renin-Angiotensin System/drug effects MH - Treatment Outcome EDAT- 2003/07/29 05:00 MHDA- 2003/11/05 05:00 CRDT- 2003/07/29 05:00 PHST- 2003/07/29 05:00 [pubmed] PHST- 2003/11/05 05:00 [medline] PHST- 2003/07/29 05:00 [entrez] AID - 10.2337/diacare.26.8.2421 [doi] PST - ppublish SO - Diabetes Care. 2003 Aug;26(8):2421-5. doi: 10.2337/diacare.26.8.2421.