PMID- 16428080 OWN - NLM STAT- MEDLINE DCOM- 20090223 LR - 20161124 IS - 1567-5769 (Print) IS - 1567-5769 (Linking) VI - 6 IP - 3 DP - 2006 Mar TI - Prevention of early renal injury by mycophenolate mofetil and its mechanism in experimental diabetes. PG - 445-53 AB - Previously it was shown that treatment with mycophenolate mofetil (MMF) attenuated renal inflammation and glomerular injury in a model of diabetes. However, the mechanism involved in the renoprotective effects of MMF in experimental diabetes has not been clearly delineated. Diabetes was induced by injection of streptozotocin (STZ) after uninephrectomy. Diabetic animals received no treatment or treatment with MMF (10 mg/kg once daily by gastric gavage) for 8 weeks, non-diabetic rats served as controls. Level of malondialdehyde (MDA) in renal tissue and urine as well as the activity of antioxidant enzymes (AOE) in renal tissue was determined. Renal injury was evaluated. Immunohistochemistry for ED-1 macrophages marker, intercellular adhesion molecule-1 (ICAM-1) and monocyte chemoattractant protein-1 (MCP-1) was performed. Expression of transforming growth factor (TGF)-beta1 protein was determined by Western blotting analysis. Treatment with MMF had no effect on blood glucose level, but did prevent increased urinary albumin excretion and glomerular damage in diabetic rats. Oxidative stress was reduced by MMF treatment, as indicated by a reduction in MDA level in renal tissue and urine. Activity of AOE such as glutathione peroxidase (GSH-PX) was markedly elevated while superoxide dismutase (SOD) and catalase (CAT) were not changed by MMF treatment. In diabetic animals receiving no treatment, there were increases in ED-1-positive cells, ICAM-1 expression and MCP-1 expression in glomeruli and tubulointerstitium, which were effectively suppressed by MMF treatment. Western blotting analysis showed that the expression of TGF-beta1 protein was increased by 1.92-fold in renal tissue in diabetic rats, and MMF treatment significantly reduced the increased expression of TGF-beta1 protein by 45%. Our data suggest that MMF treatment ameliorates early renal injury via the inhibition of oxidative stress and overexpression of ICAM-1, MCP-1 and TGF-beta1 in renal tissue in diabetic rats. FAU - Wu, Yong-Gui AU - Wu YG AD - Department of Nephropathy, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China. wygxll@ah163.com FAU - Lin, Hui AU - Lin H FAU - Qi, Xiang-Ming AU - Qi XM FAU - Wu, Guo-Zhong AU - Wu GZ FAU - Qian, Hao AU - Qian H FAU - Zhao, Min AU - Zhao M FAU - Shen, Ji-Jia AU - Shen JJ FAU - Lin, Shan-Tan AU - Lin ST LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20051012 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Transforming Growth Factor beta1) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - HU9DX48N0T (Mycophenolic Acid) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - Chemokine CCL2/biosynthesis/genetics MH - Diabetes Mellitus, Experimental/complications/*drug therapy MH - Diabetic Nephropathies/metabolism/pathology/*prevention & control MH - Intercellular Adhesion Molecule-1/biosynthesis/genetics MH - Kidney/cytology/*drug effects/metabolism/pathology MH - Macrophages/cytology/pathology MH - Male MH - Mycophenolic Acid/*analogs & derivatives/pharmacology MH - Oxidative Stress/physiology MH - Rats MH - Rats, Wistar MH - Transforming Growth Factor beta1/biosynthesis/genetics EDAT- 2006/01/24 09:00 MHDA- 2009/02/24 09:00 CRDT- 2006/01/24 09:00 PHST- 2005/04/03 00:00 [received] PHST- 2005/06/30 00:00 [revised] PHST- 2005/09/15 00:00 [accepted] PHST- 2006/01/24 09:00 [pubmed] PHST- 2009/02/24 09:00 [medline] PHST- 2006/01/24 09:00 [entrez] AID - S1567-5769(05)00261-4 [pii] AID - 10.1016/j.intimp.2005.09.006 [doi] PST - ppublish SO - Int Immunopharmacol. 2006 Mar;6(3):445-53. doi: 10.1016/j.intimp.2005.09.006. Epub 2005 Oct 12.