PMID- 16902319 OWN - NLM STAT- MEDLINE DCOM- 20061211 LR - 20170118 IS - 1660-2129 (Electronic) IS - 1660-2129 (Linking) VI - 104 IP - 4 DP - 2006 TI - Renoprotective effect of breviscapine through suppression of renal macrophage recruitment in streptozotocin-induced diabetic rats. PG - e147-57 AB - BACKGROUND/AIMS: Experimental and clinical evidence has consistently demonstrated that renal macrophage infiltration is one of the most important events for the progression of diabetic nephropathy. Breviscapine is a flavonoid extracted from the Chinese herb Erigeron breviscapus. Previously, it was shown that treatment with breviscapine attenuated renal injury in the diabetic rats. The purpose of this study is to investigate whether the renoprotective effect of breviscapine is through suppression of renal macrophage recruitment in diabetic rats. METHODS: Diabetes was induced bystreptozotocin injection, and breviscapine was administered orally at a dose of 20 mg/kg/day for 8 weeks. Control rats received vehicle or breviscapine with the same schedule. RESULTS: Breviscapine treatment markedly inhibited both an increase of albuminuria and glomeruli hypertrophy and tubulointerstitial injury without modifying mean arterial blood pressure and creatinine clearance. Levels of malondialdehyde and protein kinase C activities were markedly higher and antioxidant enzyme activities such as superoxide dismutase, catalase as well as glutathione peroxidase were significantly lower in the kidneys of diabetic rats than of the control group, breviscapine administration markedly remitted these changes. ED-1-positive cells and expression of intercellular adhesion molecule-1 (ICAM-1) and monocyte chemoattractant protein-1 (MCP-1) in glomeruli and tubulointerstitium were all markedly elevated but were significantly reduced by breviscapine. Western blot analysis noted that the expression of transforming growth factor beta1 protein was increased 1.8-fold in the kidney in diabetic rats, breviscapine treatment could reduce increased expression of TGF-beta1 protein by 47%. CONCLUSION: This study describes a novel mechanism by which breviscapine confers a renoprotective effect. CI - Copyright 2006 S. Karger AG, Basel. FAU - Qi, Xiang Ming AU - Qi XM AD - Department of Nephropathy, The First Affiliated Hospital of AnHui Medical University, Hefei, PR China. FAU - Wu, Guo Zhong AU - Wu GZ FAU - Wu, Yong Gui AU - Wu YG FAU - Lin, Hui AU - Lin H FAU - Shen, Ji Jia AU - Shen JJ FAU - Lin, Shan Yan AU - Lin SY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060810 PL - Switzerland TA - Nephron Exp Nephrol JT - Nephron. Experimental nephrology JID - 101159770 RN - 0 (Chemokine CCL2) RN - 0 (Flavonoids) RN - 116122-36-2 (breviscapine) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) SB - IM MH - Animals MH - Chemokine CCL2/analysis MH - Diabetes Mellitus, Experimental/drug therapy/*physiopathology MH - Diabetic Nephropathies/prevention & control MH - Flavonoids/*pharmacology MH - Intercellular Adhesion Molecule-1/analysis MH - Kidney Glomerulus/drug effects/pathology MH - Macrophages/*drug effects MH - Male MH - Oxidative Stress/drug effects MH - Rats EDAT- 2006/08/12 09:00 MHDA- 2006/12/12 09:00 CRDT- 2006/08/12 09:00 PHST- 2005/08/18 00:00 [received] PHST- 2006/02/21 00:00 [accepted] PHST- 2006/08/12 09:00 [pubmed] PHST- 2006/12/12 09:00 [medline] PHST- 2006/08/12 09:00 [entrez] AID - 94966 [pii] AID - 10.1159/000094966 [doi] PST - ppublish SO - Nephron Exp Nephrol. 2006;104(4):e147-57. doi: 10.1159/000094966. Epub 2006 Aug 10.