PMID- 21270242 OWN - NLM STAT- MEDLINE DCOM- 20110422 LR - 20220722 IS - 1939-327X (Electronic) IS - 0012-1797 (Print) IS - 0012-1797 (Linking) VI - 60 IP - 3 DP - 2011 Mar TI - Activation of peroxisome proliferator-activated receptor delta inhibits streptozotocin-induced diabetic nephropathy through anti-inflammatory mechanisms in mice. PG - 960-8 LID - 10.2337/db10-1361 [doi] AB - OBJECTIVE: Activation of the nuclear hormone receptor peroxisome proliferator-activated receptor (PPAR)-delta has been shown to improve insulin resistance, adiposity, and plasma HDL levels. Several studies have reported that activation of PPARdelta is atheroprotective; however, the role of PPARdelta in renal function remains unclear. Here, we report the renoprotective effects of PPARdelta activation in a model of streptozotocin-induced diabetic nephropathy. RESEARCH DESIGN AND METHODS: Eight-week-old male C57BL/6 mice were divided into three groups: 1) nondiabetic control mice, 2) diabetic mice, and 3) diabetic mice treated with the PPARdelta agonist GW0742 (1 mg/kg/day). GW0742 was administered by gavage for 8 weeks after inducing diabetes. RESULTS: GW0742 decreased urinary albumin excretion without altering blood glucose levels. Macrophage infiltration, mesangial matrix accumulation, and type IV collagen deposition were substantially attenuated by GW0742. The gene expression of inflammatory mediators in the kidney cortex, such as monocyte chemoattractant protein-1 (MCP-1) and osteopontin (OPN), was also suppressed. In vitro studies demonstrated that PPARdelta activation increased the expression of anti-inflammatory corepressor B-cell lymphoma-6, which subsequently suppressed MCP-1 and OPN expression. CONCLUSIONS: These findings uncover a previously unrecognized mechanism for the renoprotective effects of PPARdelta agonists and support the concept that PPARdelta agonists may offer a novel therapeutic approach for the treatment of diabetic nephropathy. FAU - Matsushita, Yuichi AU - Matsushita Y AD - Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. FAU - Ogawa, Daisuke AU - Ogawa D FAU - Wada, Jun AU - Wada J FAU - Yamamoto, Noriko AU - Yamamoto N FAU - Shikata, Kenichi AU - Shikata K FAU - Sato, Chikage AU - Sato C FAU - Tachibana, Hiromi AU - Tachibana H FAU - Toyota, Noriko AU - Toyota N FAU - Makino, Hirofumi AU - Makino H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110126 PL - United States TA - Diabetes JT - Diabetes JID - 0372763 RN - 0 (Chemokine CCL2) RN - 0 (PPAR delta) RN - 0 (Proto-Oncogene Proteins c-bcl-6) RN - 0 (Thiazoles) RN - 106441-73-0 (Osteopontin) RN - 4PZK9FJC4Z ((4-(((2-(3-fluoro-4-(trifluoromethyl)phenyl)-4-methyl-1,3-thiazol-5-yl)methyl)sulfanyl)-2-methylphenoxy)acetic acid) SB - IM MH - Albuminuria/drug therapy/genetics/metabolism MH - Analysis of Variance MH - Animals MH - Blotting, Western MH - Chemokine CCL2/genetics/metabolism MH - Diabetes Mellitus, Experimental/drug therapy/genetics/*metabolism MH - Diabetic Nephropathies/genetics/*metabolism/prevention & control MH - Fluorescent Antibody Technique MH - Immunoprecipitation MH - Kidney/drug effects/*metabolism MH - Male MH - Mice MH - Osteopontin/genetics/metabolism MH - PPAR delta/genetics/*metabolism MH - Proto-Oncogene Proteins c-bcl-6/genetics/metabolism MH - Thiazoles/pharmacology/therapeutic use PMC - PMC3046857 EDAT- 2011/01/29 06:00 MHDA- 2011/04/26 06:00 PMCR- 2012/03/01 CRDT- 2011/01/29 06:00 PHST- 2011/01/29 06:00 [entrez] PHST- 2011/01/29 06:00 [pubmed] PHST- 2011/04/26 06:00 [medline] PHST- 2012/03/01 00:00 [pmc-release] AID - db10-1361 [pii] AID - 1361 [pii] AID - 10.2337/db10-1361 [doi] PST - ppublish SO - Diabetes. 2011 Mar;60(3):960-8. doi: 10.2337/db10-1361. Epub 2011 Jan 26.