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https://www.readbyqxmd.com/read/28346566/gene-gene-interaction-between-pparg-and-apoe-gene-on-late-onset-alzheimer-s-disease-a-case-control-study-in-chinese-han-population
#1
S Wang, L Guan, D Luo, J Liu, H Lin, X Li, X Liu
AIMS: The aim was to investigate the impact of PPARG and APOE gene single nucleotide polymorphisms (SNPs) and additional gene- gene interaction on late-onset Alzheimer's disease (LOAD) risk based on Chinese Han population. METHODS: A total of 928 participants (466 males, 462 females), with a mean age of 81.3 ± 16.4 years old, were included in the study, including 460 LOAD patients and 468 normal controls participants. Logistic regression was performed to investigate association between SNP and LOAD risk and generalized multifactor dimensionality reduction (GMDR) was used to analysis the gene-gene interaction...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28334807/allele-specific-quantitative-proteomics-unravels-molecular-mechanisms-modulated-by-cis-regulatory-pparg-locus-variation
#2
Heekyoung Lee, Kun Qian, Christine von Toerne, Lena Hoerburger, Melina Claussnitzer, Christoph Hoffmann, Viktoria Glunk, Simone Wahl, Michaela Breier, Franziska Eck, Leili Jafari, Sophie Molnos, Harald Grallert, Ingrid Dahlman, Peter Arner, Cornelia Brunner, Hans Hauner, Stefanie M Hauck, Helmut Laumen
Genome-wide association studies identified numerous disease risk loci. Delineating molecular mechanisms influenced by cis-regulatory variants is essential to understand gene regulation and ultimately disease pathophysiology. Combining bioinformatics and public domain chromatin information with quantitative proteomics supports prediction of cis-regulatory variants and enabled identification of allele-dependent binding of both, transcription factors and coregulators at the type 2 diabetes associated PPARG locus...
February 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28303117/expression-patterns-and-correlations-with-metabolic-markers-of-zinc-transporters-zip14-and-znt1-in-obesity-and-polycystic-ovary-syndrome
#3
Trine Maxel, Pernille Fog Svendsen, Kamille Smidt, Jesper Krogh Lauridsen, Birgitte Brock, Steen Bønlykke Pedersen, Jørgen Rungby, Agnete Larsen
Polycystic ovary syndrome (PCOS) is associated with infertility, increased androgen levels, and insulin resistance. In adipose tissue, zinc facilitates insulin signaling. Circulating zinc levels are altered in obesity, diabetes, and PCOS; and zinc supplementation can ameliorate metabolic disturbances in PCOS. In adipose tissue, expression of zinc influx transporter ZIP14 varies with body mass index (BMI), clinical markers of metabolic syndrome, and peroxisome proliferator-activated receptor gamma (PPARG). In this study, we investigated expression levels of ZIP14 and PPARG in subcutaneous adipose tissue of 36 PCOS women (17 lean and 19 obese women) compared with 23 healthy controls (7 lean and 16 obese women)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28290785/-genetic-risk-factors-of-macrovascular-complications-in-patients-with-type-2-diabetes
#4
A A Bystrova, A S Ulitina, M V Kim, S A Skoryukova, V V Miroshnikova, A A Panteleeva, N A Korelskaya, Zhu He Zhu He, M A Nikolaev, S N Pchelina, E I Baranova, E I Krasilnikova
High risk of macrovascular complications in patients with type 2 diabetes mellitus (T2DM) is caused by insulin resistance and atherogenic dyslipidemia that may be genetically determined. The aim of this study was to assess the association of polymorphic genetic variants APOA5 (S19W/rs3135506), CETP (Taq1B/rs708272), PON1 (Q192R /rs662) and PPARG (Pro12Ala /rs1801282) with T2DM and macrovascular complications in patients with T2DM resident in Northwestern Russia. We examined 386 patients with T2DM and 199 healthy controls...
February 2017: Kardiologiia
https://www.readbyqxmd.com/read/28284697/mir-27a-controls-triacylglycerol-synthesis-in-bovine-mammary-epithelial-cells-by-targeting-peroxisome-proliferator-activated-receptor-gamma
#5
K Q Tang, Y N Wang, L S Zan, W C Yang
Growing evidence has revealed that microRNA are central elements in milk fat synthesis in mammary epithelial cells. A negative regulator of adipocyte fat synthesis, miR-27a has been reported to be involved in the regulation of milk fat synthesis in goat mammary epithelial cells; however, the regulatory role of miR-27a in bovine milk fat synthesis remains unclear. In the present study, primary bovine mammary epithelial cells (BMEC) were harvested from mid-lactation cows and cultured in Dulbecco's modified Eagle's medium/F-12 medium with 10% fetal bovine serum, 5 μg/mL of insulin, 1 μg/mL of hydrocortisone, 2 μg/mL of prolactin, 1 μg/mL of progesterone, 100 U/mL of penicillin, and 100 μg/mL of streptomycin...
March 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28282128/activation-of-peroxisome-proliferator-activated-receptor-gamma-and-disruption-of-progesterone-synthesis-of-2-ethylhexyl-diphenyl-phosphate-in-human-placental-choriocarcinoma-cells-comparison-with-triphenyl-phosphate
#6
Wenxin Hu, Fumei Gao, Hong Zhang, Youhei Hiromori, Shuhei Arakawa, Hisamitsu Nagase, Tsuyoshi Nakanishi, Jianying Hu
2-Ethylhexyl diphenyl phosphate (EHDPP), an organophosphate flame retardant (OPFR), is frequently detected in human blood. In this study, the sensitive dual-luciferase reporter gene assay and molecular docking were used to investigate the activation of EHDPP to human peroxisome proliferator-activated receptor gamma (PPARG). Results show that EHDPP exhibited stronger PPARG activation (EC20: 2.04 μM) than triphenyl phosphate (TPhP) (EC20: 2.78 μM). EHDPP upregulated the gene expression of 3β-hydroxysteroid dehydrogenase type 1 (3β-HSD1) in human placental choriocarcinoma cells in a dose-dependent manner, and the lowest observable effective concentration was 10 μM, lower than that of TPhP (20 μM)...
March 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28282036/heterarchy-of-transcription-factors-driving-basal-and-luminal-cell-phenotypes-in-human-urothelium
#7
Carl Fishwick, Janet Higgins, Lawrence Percival-Alwyn, Arianna Hustler, Joanna Pearson, Sarah Bastkowski, Simon Moxon, David Swarbreck, Chris D Greenman, Jennifer Southgate
Cell differentiation is affected by complex networks of transcription factors that co-ordinate re-organisation of the chromatin landscape. The hierarchies of these relationships can be difficult to dissect. During in vitro differentiation of normal human uro-epithelial cells, formaldehyde-assisted isolation of regulatory elements (FAIRE-seq) and RNA-seq was used to identify alterations in chromatin accessibility and gene expression changes following activation of the nuclear receptor peroxisome proliferator-activated receptor gamma (PPARγ) as a differentiation-initiating event...
March 10, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28278164/rosiglitazone-drives-cavin-2-sdpr-expression-in-adipocytes-in-a-cebp%C3%AE-dependent-manner
#8
Björn Hansson, Catarina Rippe, Dorota Kotowska, Sebastian Wasserstrom, Johanna Säll, Olga Göransson, Karl Swärd, Karin G Stenkula
Caveolae are abundant adipocyte surface domains involved in insulin signaling, membrane trafficking and lipid homeostasis. Transcriptional control mechanisms for caveolins and cavins, the building blocks of caveolae, are thus arguably important for adipocyte biology and studies in this area may give insight into insulin resistance and diabetes. Here we addressed the hypothesis that one of the less characterized caveolar components, cavin-2 (SDPR), is controlled by CCAAT/Enhancer Binding Protein (CEBPα) and Peroxisome Proliferator-Activated Receptor Gamma (PPARG)...
2017: PloS One
https://www.readbyqxmd.com/read/28275132/impact-of-polyunsaturated-and-saturated-fat-overfeeding-on-the-dna-methylation-pattern-in-human-adipose-tissue-a-randomized-controlled-trial
#9
Alexander Perfilyev, Ingrid Dahlman, Linn Gillberg, Fredrik Rosqvist, David Iggman, Petr Volkov, Emma Nilsson, Ulf Risérus, Charlotte Ling
Background: Dietary fat composition can affect ectopic lipid accumulation and, thereby, insulin resistance. Diets that are high in saturated fatty acids (SFAs) or polyunsaturated fatty acids (PUFAs) have different metabolic responses.Objective: We investigated whether the epigenome of human adipose tissue is affected differently by dietary fat composition and general overfeeding in a randomized trial.Design: We studied the effects of 7 wk of excessive SFA (n = 17) or PUFA (n = 14) intake (+750 kcal/d) on the DNA methylation of ∼450,000 sites in human subcutaneous adipose tissue...
March 8, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28275008/pparg-is-central-to-the-initiation-and-propagation-of-human-angiomyolipoma-suggesting-its-potential-as-a-therapeutic-target
#10
Oren Pleniceanu, Racheli Shukrun, Dorit Omer, Einav Vax, Itamar Kanter, Klaudyna Dziedzic, Naomi Pode-Shakked, Michal Mark-Daniei, Sara Pri-Chen, Yehudit Gnatek, Hadas Alfandary, Nira Varda-Bloom, Dekel D Bar-Lev, Naomi Bollag, Rachel Shtainfeld, Leah Armon, Achia Urbach, Tomer Kalisky, Arnon Nagler, Orit Harari-Steinberg, Jack L Arbiser, Benjamin Dekel
Angiomyolipoma (AML), the most common benign renal tumor, can result in severe morbidity from hemorrhage and renal failure. While mTORC1 activation is involved in its growth, mTORC1 inhibitors fail to eradicate AML, highlighting the need for new therapies. Moreover, the identity of the AML cell of origin is obscure. AML research, however, is hampered by the lack of in vivo models. Here, we establish a human AML-xenograft (Xn) model in mice, recapitulating AML at the histological and molecular levels. Microarray analysis demonstrated tumor growth in vivo to involve robust PPARG-pathway activation...
March 8, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28235645/modification-of-the-fatty-acid-composition-of-an-obesogenic-diet-improves-the-maternal-and-placental-metabolic-environment-in-obese-pregnant-mice
#11
Martina Gimpfl, Jan Rozman, Maik Dahlhoff, Raphaela Kübeck, Andreas Blutke, Birgit Rathkolb, Martin Klingenspor, Martin Hrabě de Angelis, Soner Öner-Sieben, Annette Seibt, Adelbert A Roscher, Eckhard Wolf, Regina Ensenauer
Peri-conceptional exposure to maternal obesogenic nutrition is associated with in utero programming of later-life overweight and metabolic disease in the offspring. We aimed to investigate whether dietary intervention with a modified fatty acid quality in an obesogenic high-calorie (HC) diet during the preconception and gestational phases can improve unfavourable effects of an adipogenic maternal environment. In NMRI mice, peri-conceptional and gestational obesity was induced by feeding a HC diet (controls), and they were compared with dams on a fat-modified (Fat-mod) HC diet of the same energy content but enriched with medium-chain fatty acids (MCFAs) and adjusted to a decreased ratio of n-6 to n-3 long-chain polyunsaturated fatty acids (LC-PUFAs)...
February 21, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28231576/molecular-markers-involved-in-tumorigenesis-of-thyroid-carcinoma-focus-on-aggressive-histotypes
#12
Gustavo C Penna, Fernanda Vaisman, Mario Vaisman, Manuel Sobrinho-Simões, Paula Soares
Thyroid cancer derived from follicular cells (TCDFC) comprises well-differentiated (papillary and follicular) carcinoma, poorly differentiated carcinoma, and anaplastic carcinoma. Papillary thyroid carcinoma is the most common endocrine cancer, and its incidence is steadily increasing. Lethality and aggressiveness of TCDFC is inversely correlated with differentiation degree. In this review, an emphasis has been put on molecular markers involved in tumorigenesis of thyroid carcinoma with a focus on aggressive histotypes and the role of such biomarkers in predicting thyroid cancer outcome...
2016: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28225792/the-adamts9-gene-is-associated-with-cognitive-aging-in-the-elderly-in-a-taiwanese-population
#13
Eugene Lin, Shih-Jen Tsai, Po-Hsiu Kuo, Yu-Li Liu, Albert C Yang, Chung-Feng Kao, Cheng-Hung Yang
Evidence indicates that the pathophysiologic mechanisms associated with insulin resistance may contribute to cognitive aging and Alzheimer's diseases. In this study, we hypothesize that single nucleotide polymorphisms (SNPs) within insulin resistance-associated genes, such as the ADAM metallopeptidase with thrombospondin type 1 motif 9 (ADAMTS9), glucokinase regulator (GCKR), and peroxisome proliferator activated receptor gamma (PPARG) genes, may be linked with cognitive aging independently and/or through complex interactions in an older Taiwanese population...
2017: PloS One
https://www.readbyqxmd.com/read/28220523/inflammation-is-independent-of-steatosis-in-a-murine-model-of-steatohepatitis
#14
Wei Wang, Ming-Jiang Xu, Yan Cai, Zhou Zhou, Haixia Cao, Partha Mukhopadhyay, Pal Pacher, Shusen Zheng, Frank J Gonzalez, Bin Gao
Obesity and alcohol consumption synergistically promote steatohepatitis, and neutrophil infiltration is believed to be associated with steatosis. However, the underlying mechanisms remain obscure. Peroxisome proliferator-activated receptor-gamma (PPARγ) plays a complex role in lipid metabolism and inflammation, therefore, the purpose of this study was to dissect its role in regulating steatosis and neutrophil infiltration in a clinically relevant mouse steatohepatitis model of 3-month high-fat diet (HFD) feeding plus a binge of ethanol (HFD -plus-binge ethanol)...
February 21, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28214558/small-heterodimer-partner-shp-contributes-to-insulin-resistance-in-cardiomyocytes
#15
Ricardo Rodríguez-Calvo, Dipanjan Chanda, Yvonne Oligschlaeger, Marie Miglianico, Will A Coumans, Emma Barroso, Marta Tajes, Joost Jfp Luiken, Jan Fc Glatz, Manuel Vázquez-Carrera, Dietbert Neumann
Small heterodimer partner (SHP) is an atypical nuclear receptor expressed in heart that has been shown to inhibit the hypertrophic response. Here, we assessed the role of SHP in cardiac metabolism and inflammation. Mice fed a high-fat diet (HFD) displayed glucose intolerance accompanied by increased cardiac mRNA levels of Shp. In HL-1 cardiomyocytes, SHP overexpression inhibited both basal and insulin-stimulated glucose uptake and impaired the insulin signalling pathway (evidenced by reduced AKT and AS160 phosphorylation), similar to insulin resistant cells generated by high palmitate/high insulin treatment (HP/HI; 500μM/100nM)...
February 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28193157/whole-genome-association-analysis-of-pork-meat-ph-revealed-three-significant-regions-and-several-potential-genes-in-finnish-yorkshire-pigs
#16
Lucas L Verardo, Marja-Liisa Sevón-Aimonen, Timo Serenius, Ville Hietakangas, Pekka Uimari
BACKGROUND: One of the most commonly used quality measurements of pork is pH measured 24 h after slaughter. The most probable mode of inheritance for this trait is oligogenic with several known major genes, such as PRKAG3. In this study, we used whole-genome SNP genotypes of over 700 AI boars; after a quality check, 42,385 SNPs remained for association analysis. All the boars were purebred Finnish Yorkshire. To account for relatedness of the animals, a pedigree-based relationship matrix was used in a mixed linear model to test the effect of SNPs on pH measured from loin...
February 13, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28182703/nephropathy-in-pparg-null-mice-highlights-ppar%C3%AE-systemic-activities-in-metabolism-and-in-the-immune-system
#17
Barbara Toffoli, Federica Gilardi, Carine Winkler, Magnus Soderberg, Laura Kowalczuk, Yvan Arsenijevic, Krister Bamberg, Olivier Bonny, Béatrice Desvergne
Peroxisome proliferator-activated receptor γ (PPARγ) is a ligand-dependent transcription factor involved in many aspects of metabolism, immune response, and development. Total-body deletion of the two Pparg alleles provoked generalized lipoatrophy along with severe type 2 diabetes. Herein, we explore the appearance and development of structural and functional alterations of the kidney, comparing Pparg null-mice to their littermate controls (carrying Pparg floxed alleles). We show that renal hypertrophy and functional alterations with increased glucosuria and albuminuria are already present in 3 weeks-old Pparg null-mice...
2017: PloS One
https://www.readbyqxmd.com/read/28163246/triphenyl-phosphate-enhances-adipogenic-differentiation-glucose-uptake-and-lipolysis-via-endocrine-and-noradrenergic-mechanisms
#18
German Cano-Sancho, Anna Smith, Michele A La Merrill
The use of triphenyl phosphate (TPhP) as a flame retardant or plasticizer has increased during the last decade, resulting in widespread human exposure without commensurate toxicity assessment. The main objectives of this study were to assess the in vitro effect of TPhP and its metabolite diphenyl phosphate (DPhP) on the adipogenic differentiation of 3T3-L1 cells, as well as glucose uptake and lipolysis in differentiated 3T3-L1 adipocytes. TPhP increased pre-adipocyte proliferation and subsequent adipogenic differentiation of 3T3-L1 cells, coinciding with increased transcription in the CEBP and PPARG pathway...
February 3, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28139539/association-of-type-2-diabetes-mellitus-genes-in-polycystic-ovary-syndrome-aetiology-among-women-from-southern-india
#19
Battini Mohan Reddy, Uma Jyothi Kommoju, Shilpi Dasgupta, Pranavchand Rayabarapu
BACKGROUND & OBJECTIVES: Polycystic ovary syndrome (PCOS) is the most common reproductive endocrine disorder of premenopausal women. Given the phenotypic overlap between PCOS and type 2 diabetes mellitus (T2DM), this study was carried out to investigate whether genes implicated in T2DM were also involved in the susceptibility to PCOS among women from southern India. METHODS: A total of 248 women with PCOS and 210 healthy women as controls were genotyped for a panel of 15 single nucleotide polymorphisms (SNPs) from the nine T2DM genes, such as TCF7L2, IGF2BP2, SLC30A8, HHEX, CDKAL1, CDKN2A, IRS1, CAPN10 and PPARG, on Sequenom MassARRAY platform...
September 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28131740/adipose-tissue-is-influenced-by-hypoxia-of-obstructive-sleep-apnea-syndrome-independent-of-obesity
#20
C E Thorn, B Knight, E Pastel, L J McCulloch, B Patel, A C Shore, K Kos
AIMS: Obstructive sleep apnea syndrome (OSAS) is associated with increased cardiovascular risk and diabetes independent of obesity. We investigated whether adipose tissue dysfunction is exacerbated due to increased tissue hypoxia. METHODS: Adipose tissue (AT) oxygenation was measured with a Clarke-type electrode (pATO2) in 16 men with OSAS before and after 4 months of continuous positive airway pressure therapy (CPAP) and in BMI-matched controls. Oxygenation was simultaneously monitored in arterial blood by pulse oximetry (SaO2); mixed blood in AT microcirculation by reflectance spectroscopy (SATO2) along with blood flow...
January 25, 2017: Diabetes & Metabolism
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