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Ppar gamma

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https://www.readbyqxmd.com/read/28427149/interaction-between-ppar-%C3%AE-and-sorl1-gene-with-late-onset-alzheimer-s-disease-in-chinese-han-population
#1
Hui Zhang, Wei Zheng, Linlin Hua, Yutong Wang, Jinfeng Li, Hongying Bai, Shanshan Wang, Mingyao Du, Xuelian Ma, Chunyang Xu, Xiaodong Li, Bin Gong, Yunliang Wang
AIMS: To investigate the impact of sortilin-related receptor 1 gene 1 (SORL1) and peroxisome proliferator activated receptor gamma (PPAR G) gene single nucleotide polymorphisms (SNPs), gene- gene and gene- environment interactions and haplotype on late-onset Alzheimer's disease (LOAD) risk. METHODS: Hardy-Weinberg equilibrium (HWE), haplotype analysis and pairwise linkage disequilibrium (LD) analysis were investigated by using SNPStats (available online at http://bioinfo...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423012/15-hydroxyprostaglandin-dehydrogenase-15-pgdh-prevents-lipopolysaccharide-lps-induced-acute-liver-injury
#2
Lu Yao, Weina Chen, Kyoungsub Song, Chang Han, Chandrashekhar R Gandhi, Kyu Lim, Tong Wu
The NAD+-dependent 15-hydroxyprostaglandin dehydrogenase (15-PGDH) catalyzes the oxidation of the 15(S)-hydroxyl group of prostaglandin E2 (PGE2), converting the pro-inflammatory PGE2 to the anti-inflammatory 15-keto-PGE2 (an endogenous ligand for peroxisome proliferator-activated receptor-gamma [PPAR-γ]). To evaluate the significance of 15-PGDH/15-keto-PGE2 cascade in liver inflammation and tissue injury, we generated transgenic mice with targeted expression of 15-PGDH in the liver (15-PGDH Tg) and the animals were subjected to lipopolysaccharide (LPS)/Galactosamine (GalN)-induced acute liver inflammation and injury...
2017: PloS One
https://www.readbyqxmd.com/read/28405929/thermodynamics-in-cancers-opposing-interactions-between-ppar-gamma-and-the-canonical-wnt-beta-catenin-pathway
#3
REVIEW
Yves Lecarpentier, Victor Claes, Alexandre Vallée, Jean-Louis Hébert
Cancer cells are the site of numerous metabolic and thermodynamic abnormalities. We focus this review on the interactions between the canonical WNT/beta-catenin pathway and peroxisome proliferator-activated receptor gamma (PPAR gamma) in cancers and their implications from an energetic and metabolic point of view. In numerous tissues, PPAR gamma activation induces inhibition of beta-catenin pathway, while the activation of the canonical WNT/beta-catenin pathway inactivates PPAR gamma. In most cancers but not all, PPAR gamma is downregulated while the WNT/beta-catenin pathway is upregulated...
December 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28398573/skeletal-muscle-pgc1%C3%AE-1-nucleosome-position-and-260nt-dna-methylation-determine-exercise-response-and-prevent-ectopic-lipid-accumulation-in-men
#4
Sudip Bajpeyi, Jeffrey D Covington, Erin M Taylor, Laura K Stewart, Jose E Galgani, Tara M Henagan
Endurance exercise has been shown to improve lipid oxidation and increase mitochondrial content in skeletal muscle: two features that have shown dependence on increased expression of the PPAR gamma co-activator 1 alpha (PGC1α). It is also hypothesized that exercise related alterations in PGC1α expression occur through epigenetic regulation of nucleosome positioning in association with differential DNA methylation status within the PCG1α promoter. Here we show that when primary human myotubes from obese, type 2 diabetics are exposed to lipolytic stimulus (PFI) in vitro, nucleosome occupancy surrounding the -260 nucleotide (nt) region, a known regulatory DNA methylation site, is reduced...
April 10, 2017: Endocrinology
https://www.readbyqxmd.com/read/28397719/toll-like-receptor-4-signaling-pathway-in-the-protective-effect-of-pioglitazone-on-experimental-immunoglobulin-a-nephropathy
#5
Jia-Nan Zou, Jing Xiao, Sha-Sha Hu, Chen-Sheng Fu, Xiao-Li Zhang, Zhen-Xing Zhang, Yi-Jun Lu, Wei-Jun Chen, Zhi-Bin Ye
BACKGROUND: In vitro experiments have revealed that toll-like receptor 4 (TLR4) pathway is involved in the progression of immunoglobulin A nephropathy (IgAN) by induction of proinflammatory cytokines. Evidence showed that, in other disease models, peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists have been shown to exert anti-inflammatory effects through suppression of the expression and activity of TLR4. However, the interaction between PPAR-γ and TLR4 in IgAN has not been fully studied both in vitro and in vivo...
April 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28394398/genetic-variants-of-ppar-gamma-coactivator-1b-augment-nlrp3-mediated-inflammation-in-gouty-arthritis
#6
Wan-Chun Chang, Yeong-Jian Jan Wu, Wen-Hung Chung, Yun-Shien Lee, See-Wen Chin, Ting-Jui Chen, Yu-Sun Chang, Der-Yuan Chen, Shuen-Iu Hung
Objective.: Gout is characterized by recurrent attacks of arthritis with hyperuricaemia and urate crystal-induced inflammation. Although urate transporters are known as risk factors, the immunogenetics of gouty inflammation remains unclear. This study aimed to investigate the genetic association between immune/metabolism regulators and gout. Methods.: We enrolled 448 gout patients and 943 population controls from Taiwan; all were Han Chinese. We screened association between gout and 22 variants of candidate genes, including NLRP3 , caspase 1, peroxisome proliferator-activated receptor-γ, proliferator-activated receptor-γ coactivator 1α ( PPARGC1A ) and 1β ( PPARGC1B )...
March 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28391584/the-effect-of-ppar%C3%AE-agonist-on-sglt2-and-glucagon-expressions-in-alpha-cells-under-hyperglycemia
#7
M Kim, E J Lee, H M Shin, H S Jung, T K Kim, T N Kim, M J Kwon, S H Lee, B D Rhee, J H Park
BACKGROUND: Although sodium glucose cotransporter 2 (SGLT2) inhibitors have many beneficial effects for type 2 diabetes, including decreased cardiovascular death, recent reports that they increased glucagon through SGLT2 inhibition raised some concern. Troglitazone, Peroxisome proliferator-activated receptor γ (PPAR-γ) agonist, was reported to increase SGLT2 in renal proximal tubule cells, but its role on pancreatic alpha cells have not been reported. We investigated the effect of troglitazone on SGLT2 expression in alpha cells and subsequent glucagon regulation in hyperglycemia...
April 8, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28376311/contribution-of-ppar-gamma-in-modulation-of-acrolein-induced-inflammatory-signaling-in-gp91phox-knock-out-mice
#8
Zivar Yousefipour, Kasturi Ranganna, Mathew Joseph, Katarzyna Marek, Neha Chung, Alicia Nesbary, Mohammad A Newaz
Oxidative stress and inflammation are major contributors in acrolein toxicity. Peroxisome Proliferator Activated Receptor gamma (PPARγ) has antioxidant/anti-inflammatory effects. We investigated contribution of PPARγ ligand, GW1929, in attenuation of oxidative stress in acrolein-induced insult. Male gp91phox knockout (KO) mice were treated with acrolein (0.5 mg/kg; i.p.7 days) with/without GW1929 (GW, 0.5 mg/kg/day; orally-10 days). Liver was processed for further analysis. Acrolein significantly increased 8-Isoprostane and reduced PPARγ activity (P<0...
April 4, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28350954/integrating-drug-s-mode-of-action-into-quantitative-structure-activity-relationships-for-improved-prediction-of-drug-induced-liver-injury
#9
Leihong Wu, Zhichao Liu, Scott S Auerbach, Ruili Huang, Minjun Chen, Kristin McEuen, Joshua Zhihua Xu, Hong Fang, Weida Tong
Drug-induced liver injury (DILI) is complex in mechanism. Different drugs could undergo different mechanisms but result in the same DILI type while the same drug could lead to different DILI types via different mechanisms. Therefore, predicting a drug's potential for DILI should take its underlying mechanisms into consideration. To achieve that, we constructed a novel approach by incorporating drug's Mode of Action (MOA) into Quantitative Structure-Activity Relationship (QSAR) modeling. This MOA-DILI approach was examined using a dataset of 333 drugs...
March 28, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28344789/a-ppar-gamma-agonist-protects-from-radiation-induced-intestinal-toxicity
#10
Monica Mangoni, Mariangela Sottili, Chiara Gerini, Isacco Desideri, Cinzia Bastida, Stefania Pallotta, Francesca Castiglione, Pierluigi Bonomo, Icro Meattini, Daniela Greto, Sabrina Cappelli, Lucia Di Brina, Mauro Loi, Giampaolo Biti, Lorenzo Livi
OBJECTIVE: Because of its anti-inflammatory, anti-fibrotic, anti-apoptotic and anti-neoplastic properties, the PPAR-γ agonist rosiglitazone is an interesting drug for investigating for use in the prevention and treatment of radiation-induced intestinal damage. We aimed to evaluate the radioprotective effect of rosiglitazone in a murine model of acute intestinal damage, assessing whether radioprotection is selective for normal tissues or also occurs in tumour cells. METHODS: Mice were total-body irradiated (12 Gy), with or without rosiglitazone (5 mg/kg/day)...
March 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28337143/anti-adipogenic-effects-and-mechanisms-of-ginsenoside-rg3-in-pre-adipocytes-and-obese-mice
#11
Longyun Zhang, Lijuan Zhang, Xiaoyong Wang, Hongwei Si
Red or black ginseng has been reported more powerful than white/fresh ginseng in dealing with various diseases/conditions including obesity. The major reason is that heating/steaming, the process of making red or black ginseng, produces large amount of bioactive compounds including ginsenoside Rg3 (Rg3), which are trace in fresh or white ginseng. In the present study, Rg3 was applied both in pre-adipocytes and obese mice to investigate the anti-adipogenic effects and relevant mechanisms. Our results show that Rg3 dose-dependently inhibited cell differentiation both in 3T3-L1 cells (30, 50, and 100 μM) and human primary pre-adipocytes (10, 20, and 30 μM)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28298922/interactions-between-ppar-gamma-and-the-canonical-wnt-beta-catenin-pathway-in-type-2-diabetes-and-colon-cancer
#12
REVIEW
Yves Lecarpentier, Victor Claes, Alexandre Vallée, Jean-Louis Hébert
In both colon cancer and type 2 diabetes, metabolic changes induced by upregulation of the Wnt/beta-catenin signaling and downregulation of peroxisome proliferator-activated receptor gamma (PPAR gamma) may help account for the frequent association of these two diseases. In both diseases, PPAR gamma is downregulated while the canonical Wnt/beta-catenin pathway is upregulated. In colon cancer, upregulation of the canonical Wnt system induces activation of pyruvate dehydrogenase kinase and deactivation of the pyruvate dehydrogenase complex...
2017: PPAR Research
https://www.readbyqxmd.com/read/28274810/non-clinical-safety-evaluation-and-risk-assessment-to-human-of-aleglitazar-a-dual-ppar-%C3%AE-%C3%AE-agonist-and-its-major-human-metabolite
#13
Martin Bopst, Elke-Astrid Atzpodien
The non-clinical safety profile of aleglitazar, a peroxisome proliferator activated receptor alpha/gamma agonist, and its major human metabolite M6 was studied in a complete package consisting of drug metabolism and pharmacokinetics characterization, safety pharmacology, genotoxicity, repeat dose toxicity, reproductive toxicity and carcinogenicity studies. These studies identified the following main targets similar to other PPAR agonists: red blood cell parameters, liver, heart, kidney, ovaries, testes, bone marrow, adipose tissue, and fluid accumulation...
March 6, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28254448/effects-of-pioglitazone-on-the-incidence-of-dementia-in-patients-with-diabetes
#14
Ping-Song Chou, Bo-Lin Ho, Yuan-Han Yang
AIMS: Peroxisome proliferator-activated receptor gamma (PPAR-γ) agonists exert neuroprotective effects in the brain. Therefore, in this population-based cohort study, we investigated the effects of pioglitazone, a PPAR-γ agonist, on the risk of dementia. METHODS: By using claims data from Taiwan's National Health Insurance Research Database, we included 6401 patients with diabetes who were treated with pioglitazone and 12,802 age- and sex-matched patients with diabetes who were never treated with pioglitazone from 2004 to 2009 and who were free of dementia at baseline...
January 20, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28219679/thiazolidinediones-abrogate-cervical-cancer-growth
#15
Beverly R Wuertz, Lindsay Darrah, Justin Wudel, Frank G Ondrey
Peroxisome proliferator-activated receptor gamma (PPAR γ) is activated by thiazolidinedione drugs (TZDs) and can promote anti-cancer properties. We used three TZDs (pioglitazone, rosiglitazone, and ciglitazone) to target cervical cancer cell lines and a nude mouse animal model. Each agent increased activation of PPAR γ, as judged by a luciferase reporter gene assay in three HPV-associated cell lines (CaSki, SiHa, and HeLa cells) while decreasing cellular proliferation in a dose-dependent manner. They also promoted Oil Red O accumulation in treated cell lines and upregulated the lipid differentiation marker adipsin...
February 20, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28212448/hepatic-transcriptome-analysis-and-identification-of-differentially-expressed-genes-response-to-dietary-oxidized-fish-oil-in-loach-misgurnus-anguillicaudatus
#16
Yin Zhang, Yang Li, Xiao Liang, Xiaojuan Cao, Longfei Huang, Jie Yan, Yanxing Wei, Jian Gao
RNA sequencing and short-read assembly were utilized to produce a transcriptome of livers from loaches (Misgurnus anguillicaudatus) fed with three different diets respectively containing fresh fish oil (FO group), medium oxidized fish oil (MO group) and high oxidized fish oil (HO group). A total of 60,663 unigenes were obtained in this study, with mean length 848.74 bp. 50,814, 49,584 and 49,814 unigenes were respectively obtained from FO, MO and HO groups. There were 2,343 differentially expressed genes between FO and MO, with 855 down- and 1,488 up-regulated genes in the MO group...
2017: PloS One
https://www.readbyqxmd.com/read/28184028/long-term-administration-of-tacrolimus-and-everolimus-prevents-high-cholesterol-high-fructose-induced-steatosis-in-c57bl-6j-mice-by-inhibiting-de-novo-lipogenesis
#17
Sharma Love, Malik A Mudasir, Subhash C Bhardwaj, Gurdarshan Singh, Sheikh A Tasduq
AIM: To investigate the effects of tacrolimus (TC) and everolimus (EV) on non-alcoholic steatohepatitis (NASH) induced by high fat, high cholesterol and fructose (fast food) diet in C57BL/6J mice. MATERIALS AND METHODS: C57BL/6J mice were divided into four groups (n=8). 1) Standard Chow (SC); 2) Fast food (FF) diet; 3) FF + Tacrolimus (TC, 1mg/kg) and; 4) FF + Everolimus (EV, 1mg/kg) and treated for 16 weeks. Serum and tissue samples were analyzed for evidence of inflammation, fibrosis, lipogenesis, and apoptosis...
February 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28177670/effect-of-vitamin-d-on-isoprenaline-induced-myocardial-infarction-in-rats-possible-role-of-peroxisome-proliferator-activated-receptor-%C3%A9-ppar-%C3%A9
#18
Ola Ahmed El-Gohary, Mona Maher Allam
Infarct-like lesion induced by isoprenaline is a well-known model to study myocardial infarction (MI). Vitamin D has been shown to have anti-inflammatory and antioxidant effects. Recent studies highlighted cross talk between vitamin D and peroxisome proliferator-activated receptor gamma (PPAR- ɣ). The present study was designed to investigate the effect of pretreatment with vitamin D on the isoprenaline-induced infarct-like lesion in rats and the role of PPAR- ɣ as a novel mechanism in vitamin D-mediated cardio protective effect...
January 22, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28177669/beta-sitosterol-upregulated-paraoxonase-1-via-peroxisome-proliferator-activated-receptor-%C3%AE-in-irradiated-rats
#19
Enas Mahmoud Moustafa, Noura Magdy Thabet
This study was designed to evaluate the effect of beta-sitosterol (BS) on the peroxisome proliferator-activated receptor gamma (PPAR-γ) gene expression role in the activity of paraoxonase (PON-1) enzyme in oxidative stress status of irradiated rats. Animals were exposed to whole body γ-radiation single dose 6 Gy and received BS dose (40 mg·(kg body mass)(-1)·day (-1), orally). In liver tissue, gene expression of PPAR-γ ligand was determined. Oxidative stress marker (malondialdehyde, MDA) and antioxidant enzyme activities (superoxide dismutase (SOD), catalase (CAT), PON-1, and arylesterase (ARE)) were assayed in serum and liver tissue...
January 24, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28139522/ovarian-fibrosis-a-phenomenon-of-concern
#20
REVIEW
Feng Zhou, Li-Bing Shi, Song-Ying Zhang
OBJECTIVE: Ovarian fibrosis is characterized by excessive proliferation of ovarian fibroblasts and deposition of extracellular matrix (ECM) and it is one of the principal reasons for ovarian dysfunction. This review aimed to investigate the pathogenetic mechanism of ovarian fibrosis and to clarify the relationship between ovarian diseases and fibrosis. DATA SOURCES: We searched PubMed for English language articles published up to November 2016. The search terms included ovarian fibrosis OR fibrosis, ovarian chocolate cyst OR ovarian endometrioma, polycystic ovarian syndrome (PCOS), premature ovarian failure, ECM, matrix metalloproteinases (MMPs), tissue inhibitors of matrix metalloproteinases (TIMPs), transforming growth factor-beta 1 (TGF-β1), connective tissue growth factor (CTGF), peroxisome proliferator-activated receptor gamma (PPAR-γ), vascular endothelial growth factor (VEGF), endothelin-1 (ET-1), and combinations of these terms...
February 5, 2017: Chinese Medical Journal
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