PMID- 21734368 OWN - NLM STAT- MEDLINE DCOM- 20120118 LR - 20181201 IS - 1421-9670 (Electronic) IS - 0250-8095 (Linking) VI - 34 IP - 2 DP - 2011 TI - Inhibitory effects of rosiglitazone on lipopolysaccharide-induced inflammation in a murine model and HK-2 cells. PG - 152-62 LID - 10.1159/000329120 [doi] AB - BACKGROUND: Inflammation may play an important role in the pathogenesis of kidney disease. Agonists of the peroxisome proliferator-activated receptor-gamma (PPAR-gamma), such as rosiglitazone, have been recently demonstrated to regulate inflammation by modulating the production of inflammatory mediators. The purpose of this study was to examine the effects of rosiglitazone on lipopolysaccharide (LPS)-induced kidney inflammation and to explore the mechanism of its renoprotection. METHODS: Mice were treated with LPS with or without pretreatment with rosiglitazone. Blood urea nitrogen (BUN), creatinine levels, the urinary albumin-to-creatinine ratio, macrophage infiltration, monocyte chemoattractant protein-1 (MCP-1) expression, PPAR-gamma expression, and NF-kappaB and PPAR-gamma activity were investigated. HK-2 cells were maintained under defined in vitro conditions, treated with either rosiglitazone and/or the PPAR-gamma antagonist GW9662, and then stimulated with LPS. MCP-1, IL-8, IL-6, NF-kappaB activity and PPAR-gamma expression were investigated. RESULTS: Compared to the LPS only group, pretreatment with rosiglitazone in vivo significantly attenuated the BUN levels macrophage infiltration, MCP-1 overexpression and NF-kappaB activity (p < 0.05). Rosiglitazone also restored PPAR-gamma expression and protein activity, which were reduced significantly in the LPS only group (p < 0.05). Furthermore, in the LPS-stimulated HK-2 cells, rosiglitazone downregulated MCP-1, IL-8 and IL-6 expression as well as NF-kappaB activation and increased PPAR-gamma expression (p < 0.05). These effects were diminished by GW9662. CONCLUSION: These results showed that pretreatment with rosiglitazone could attenuate kidney inflammation through the activation of PPAR-gamma, suppression of MCP-1 overproduction and NF-kappaB activation. Rosiglitazone had a protective effect via a PPAR-gamma-dependent pathway in LPS-treated HK-2 cells. CI - Copyright (c) 2011 S. Karger AG, Basel. FAU - Wang, W M AU - Wang WM AD - Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University, PR China. FAU - Chen, H AU - Chen H FAU - Zhong, F AU - Zhong F FAU - Lu, Y AU - Lu Y FAU - Han, L AU - Han L FAU - Chen, N AU - Chen N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110704 PL - Switzerland TA - Am J Nephrol JT - American journal of nephrology JID - 8109361 RN - 0 (2-chloro-5-nitrobenzanilide) RN - 0 (Anilides) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Hypoglycemic Agents) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (PPAR gamma) RN - 0 (Reactive Oxygen Species) RN - 0 (Thiazolidinediones) RN - 05V02F2KDG (Rosiglitazone) RN - AYI8EX34EU (Creatinine) SB - IM MH - Anilides/pharmacology MH - Animals MH - Blood Urea Nitrogen MH - Chemokine CCL2/biosynthesis MH - Creatinine/blood MH - Humans MH - Hypoglycemic Agents/pharmacology MH - Inflammation MH - Interleukin-6/biosynthesis MH - Interleukin-8/biosynthesis MH - Lipopolysaccharides/*metabolism MH - Male MH - Mice MH - NF-kappa B/metabolism MH - PPAR gamma/metabolism MH - Reactive Oxygen Species MH - Rosiglitazone MH - Thiazolidinediones/*pharmacology MH - Time Factors EDAT- 2011/07/08 06:00 MHDA- 2012/01/19 06:00 CRDT- 2011/07/08 06:00 PHST- 2010/12/28 00:00 [received] PHST- 2011/05/04 00:00 [accepted] PHST- 2011/07/08 06:00 [entrez] PHST- 2011/07/08 06:00 [pubmed] PHST- 2012/01/19 06:00 [medline] AID - 000329120 [pii] AID - 10.1159/000329120 [doi] PST - ppublish SO - Am J Nephrol. 2011;34(2):152-62. doi: 10.1159/000329120. Epub 2011 Jul 4.