PMID- 22824914 OWN - NLM STAT- MEDLINE DCOM- 20130513 LR - 20220722 IS - 2092-6413 (Electronic) IS - 1226-3613 (Print) IS - 1226-3613 (Linking) VI - 44 IP - 10 DP - 2012 Oct 31 TI - Peroxisome proliferator-activated receptor delta agonist attenuates hepatic steatosis by anti-inflammatory mechanism. PG - 578-85 LID - 10.3858/emm.2012.44.10.066 [doi] AB - Although peroxisome proliferator receptor (PPAR)-alpha and PPAR-gamma agonist have been developed as chemical tools to uncover biological roles for the PPARs such as lipid and carbohydrate metabolism, PPAR-delta has not been fully investigated. In this study, we examined the effects of the PPAR-delta agonist GW0742 on fatty liver changes and inflammatory markers. We investigated the effects of PPAR-delta agonist GW0742 on fatty liver changes in OLETF rats. Intrahepatic triglyceride contents and expression of inflammatory cytokines such as tumor necrosis factor-alpha (TNF-alpha) and monocyte chemo-attractant protein-1 (MCP-1) and also, PPAR-gamma coactivator (PGC)-1alpha gene were evaluated in liver tissues of OLETF rats and HepG2 cells after GW0742 treatment. The level of TNF-alpha and MCP-1 was also examined in supernatant of Raw264. 7 cell culture. To address the effects of GW0742 on insulin signaling, we performed in vitro study with AML12 mouse hepatocytes. Rats treated with GW0742 (10 mg/kg/day) from 26 to 36 weeks showed improvement in fatty infiltration of the liver. In liver tissues, mRNA expressions of TNF-alpha, MCP-1, and PGC-1alpha were significantly decreased in diabetic rats treated with GW0742 compared to diabetic control rats. We also observed that GW0742 had inhibitory effects on palmitic acid-induced fatty accumulation and inflammatory markers in HepG2 and Raw264.7 cells. The expression level of Akt and IRS-1 was significantly increased by treatment with GW0742. The PPAR-delta agonist may attenuate hepatic fat accumulation through anti-inflammatory mechanism, reducing hepatic PGC-1alpha gene expression, and improvement of insulin signaling. FAU - Lee, Mi Young AU - Lee MY AD - Department of Internal Medicine, Korea Institute of Lifestyle Medicine Yonsei University Wonju College of Medicine Wonju 220-701, Korea. FAU - Choi, Ran AU - Choi R FAU - Kim, Hong Min AU - Kim HM FAU - Cho, Eun Ju AU - Cho EJ FAU - Kim, Bo Hwan AU - Kim BH FAU - Choi, Yeon Sik AU - Choi YS FAU - Naowaboot, Jarinyaporn AU - Naowaboot J FAU - Lee, Eun Young AU - Lee EY FAU - Yang, Young Chul AU - Yang YC FAU - Shin, Jang Yel AU - Shin JY FAU - Shin, Young Goo AU - Shin YG FAU - Chung, Choon Hee AU - Chung CH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Exp Mol Med JT - Experimental & molecular medicine JID - 9607880 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Blood Glucose) RN - 0 (Cytokines) RN - 0 (PPAR delta) RN - 0 (Thiazoles) RN - 0 (Triglycerides) 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 - Animals MH - Anti-Inflammatory Agents/*pharmacology/therapeutic use MH - Blood Glucose MH - Cytokines/genetics/metabolism MH - Diabetes Mellitus/blood/immunology/metabolism MH - Fatty Liver/blood/*drug therapy/immunology MH - Glucose Tolerance Test MH - Hep G2 Cells MH - Humans MH - Insulin Resistance MH - Liver/metabolism MH - Male MH - PPAR delta/*agonists/metabolism MH - Rats MH - Rats, Long-Evans MH - Thiazoles/*pharmacology/therapeutic use MH - Triglycerides/metabolism PMC - PMC3490079 EDAT- 2012/07/25 06:00 MHDA- 2013/05/15 06:00 PMCR- 2012/10/31 CRDT- 2012/07/25 06:00 PHST- 2012/07/25 06:00 [entrez] PHST- 2012/07/25 06:00 [pubmed] PHST- 2013/05/15 06:00 [medline] PHST- 2012/10/31 00:00 [pmc-release] AID - emm.2012.44.066 [pii] AID - 10.3858/emm.2012.44.10.066 [doi] PST - ppublish SO - Exp Mol Med. 2012 Oct 31;44(10):578-85. doi: 10.3858/emm.2012.44.10.066.