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Peroxisome proliferator activator gamma

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https://www.readbyqxmd.com/read/28733963/peroxisome-proliferator-activated-receptor-gamma-expression-in-peripheral-blood-mononuclear-cells-and-angiopoietin-like-protein-4-levels-in-obese-children-and-adolescents
#1
Z A Sadeghabadi, M Nourbakhsh, M Alaee, B Larijani, M Razzaghy-Azar
PURPOSE: The peroxisome proliferator-activated receptor γ (PPARγ) is highly expressed in adipose tissue and functions as transcriptional regulator of metabolism and adipocyte differentiation. Angiopoietin-like protein 4 (ANGPTL4), a central player in various aspects of energy homoeostasis, is induced by PPARγ. The aim of this study was to evaluate ANGPTL4 plasma levels and PPARγ gene expression in peripheral blood mononuclear cells (PBMCs) of children and adolescents with obesity and their association with metabolic parameters...
July 21, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28729181/expression-of-cyp4v2-in-human-thp1-macrophages-and-its-transcriptional-regulation-by-peroxisome-proliferator-activated-receptor-gamma
#2
Myeongjin Yi, Jae-Gook Shin, Su-Jun Lee
Because macrophages respond to a variety of pathological and pharmacological reagents, understanding the role of P450s in macrophages is important for therapeutic intervention. There has been a lack of research on CYP4 in macrophages, but fatty acid accumulation and lipid trafficking in macrophages have been suggested to be a main cause of atherosclerosis. All human CYP4 genes (n=12) were screened in THP1 macrophages by gene-specific reverse transcriptase-polymerase chain reaction (RT-PCR). Only CYP4V2 exhibited strong expression of both mRNA and protein...
July 17, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28727849/associations-between-pparg-polymorphisms-and-the-risk-of-essential-hypertension
#3
Gaojun Cai, Xinyong Zhang, Weijin Weng, Ganwei Shi, Sheliang Xue, Bifeng Zhang
BACKGROUND: Peroxisome proliferator-activated receptor gamma (PPARG) plays an important role in the pathogenesis and maintenance of essential hypertension (EH). It has been suggested that polymorphisms of PPARG are associated with the risk of EH. However, findings to date remain controversial. To elucidate the associations between the PPARG Pro12Ala and C161T polymorphisms and EH risk, a meta-analysis was carried out. METHODS: A comprehensive literature search of PubMed, Embase, CNKI (Chinese National Knowledge Infrastructure), VIP and Wanfang databases was conducted...
2017: PloS One
https://www.readbyqxmd.com/read/28727095/bta-mir-130a-regulates-the-biosynthesis-of-bovine-milk-fat-by-targeting-peroxisome-proliferator-activated-receptor-gamma
#4
W C Yang, W L Guo, L S Zan, Y N Wang, K Q Tang
Milk fat determines the quality of milk and is also a main targeted trait in dairy cow breeding. Recent studies have revealed important regulatory roles of microRNAs (miRNA) in milk fat synthesis in the mammary gland. However, the role of miRNA in bovine mammary epithelial cells (BMEC) remains largely unknown. In this study, we found that the overexpression of miR-130a significantly decreased cellular triacylglycerol (TAG) levels and suppressed lipid droplet formation, whereas the inhibition of miR-130a resulted in greater lipid droplet formation and TAG accumulation in BMEC...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28723637/increasing-ucp2-expression-and-decreasing-nox1-4-expression-maintain-chondrocyte-phenotype-by-reducing-reactive-oxygen-species-production
#5
Yansong Miao, Yuefu Dong, Ping Huang, Xiang Zhao, Zhenyu Huang, Jufang Yao, He Li, Qingrong Xu
The aim of this study is to demonstrate that improving the mitochondrial function can inhibite the loss of chondrocyte phenotype by regulating the expression of uncoupling protein 2(UCP2) and NADPH oxidase1/4(NOX1/4) to reduce the production of reactive oxygen species(ROS). The effects of mitochondrial biogenesis "master regular" peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitochondrial transcriptional factor A (TFAM), UCP2, and NOX1/4 on chondrocyte phenotype was examined. It was found that when the chondrocyte phenotype was lost, PGC-1α, UCP2, and TFAM expression decreased, while NOX1/4 expression increased...
July 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28720328/design-synthesis-molecular-modeling-and-anti-hyperglycemic-evaluation-of-quinazolin-4-3h-one-derivatives-as-potential-ppar%C3%AE-and-sur-agonists
#6
Mohamed K Ibrahim, Ibrahim H Eissa, Mohamed S Alesawy, Ahmed M Metwaly, Mohamed M Radwan, Mahmoud A ElSohly
Peroxisome proliferator-activated receptor gamma (PPARγ) and sulfonylurea receptor (SUR) play crucial roles in management of type-2 diabetes mellitus. In this study, a series of novel quinazoline-4(3H)-one-sulfonylurea hybrids were designed and synthesized as dual PPARγ and SUR agonists. The synthesized compounds were evaluated for their in vivo anti-hyperglycemic activities against STZ-induced hyperglycemic rats. Four compounds (19a, 19d, 19f and 25g) demonstrated potent activities with reduction in blood glucose levels of 40...
July 8, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28718514/aldehyde-dehydrogenase-1-a1-regulates-energy-metabolism-in-adipocytes-from-different-species
#7
Kefeng Yang, Christopher Adin, Qiwen Shen, Ly James Lee, Lianbo Yu, Paolo Fadda, Arpad Samogyi, Kathleen Ham, Lu Xu, Chen Gilor, Ouliana Ziouzenkova
BACKGROUND: Survival and longevity of xenotransplants depend on immune function and ability to integrate energy metabolism between cells from different species. However, mechanisms for interspecies cross talk in energy metabolism are not well understood. White adipose tissue stores energy and is capable of mobilization and dissipation of energy as heat (thermogenesis) by adipocytes expressing uncoupling protein 1 (Ucp1). Both pathways are under the control of vitamin A metabolizing enzymes...
July 17, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28717866/mir-30a-positively-regulates-the-inflammatory-response-of-microglia-in-experimental-autoimmune-encephalomyelitis
#8
Xue Fang, Dingya Sun, Zhihong Wang, Zhongwang Yu, Weili Liu, Yingyan Pu, Dan Wang, Aijun Huang, Mingdong Liu, Zhenghua Xiang, Cheng He, Li Cao
Multiple sclerosis (MS) is a classical inflammatory demyelinating disease of the central nervous system (CNS). Microglia are the main resident immune cells in the CNS and are closely associated with the pathogenesis of MS. In the present study, we found that miR-30a was highly expressed in jellyfish-like microglia in chronic active lesions of MS patients, as well as in the microglia of mice with experimental autoimmune encephalomyelitis (EAE) at the chronic phase. In vitro, the conditioned supernatant of mouse microglia overexpressing miR-30a promoted the apoptosis of oligodendrocyte precursor cells (OPCs), and inhibited OPC differentiation...
July 17, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28716732/lysophosphatidic-acid-signaling-regulates-the-klf9-ppar%C3%AE-axis-in-human-induced-pluripotent-stem-cell-derived-neurons
#9
Tamotsu Tsukahara, Shuhei Yamagishi, Yoshikazu Matsuda, Hisao Haniu
Lysophosphatidic acid (LPA) is a lipid signaling molecule that plays several significant roles in the nervous system during development and injury. In this study, we differentiated human induced pluripotent stem cells (iPSCs) into neurons as an in vitro model to examine the specific effects of LPA. We demonstrated that LPA activates peroxisome proliferator-activated receptor gamma (PPARγ), a ligand-activated nuclear receptor, as well as its cognate receptor LPA1 on human iPSC-derived neurons to enhance proliferation and neurite outgrowth...
July 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28716729/study-of-new-interactions-of-glitazone-s-stereoisomers-and-the-endogenous-ligand-15d-pgj2-on-six-different-ppar-gamma-proteins
#10
Samuel Álvarez-Almazán, Martiniano Bello, Feliciano Tamay-Cach, Marlet Martínez-Archundia, Diana Alemán-González-Duhart, José Correa-Basurto, Jessica Elena Mendieta-Wejebe
Diabetes mellitus is a chronic disease characterized by hyperglycemia, insulin resistance and hyperlipidemia. Glitazones or thiazolidinediones (TZD) are drugs that act as insulin-sensitizing agents whose molecular target is the peroxisome proliferator-activated receptor gamma (PPARγ). The euglycemic action of TZD has been linked with the induction of type 4 glucose transporter. However, it has been shown that the effect of TZD depends on the specific stereoisomer that interacts with PPARγ. Therefore, this work is focused on exploring the interactions and geometry adopted by glitazone's stereoisomers and one endogenous ligand on different conformations of the six crystals of the PPARγ protein using molecular docking and molecular dynamics (MD) simulations accompanied by the MMGBSA approach...
July 14, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28716464/modulating-effects-of-omega-3-fatty-acids-and-pioglitazone-combination-on-insulin-resistance-through-toll-like-receptor-4-in-type-2-diabetes-mellitus
#11
Salma M Eraky, Noha Abdel-Rahman, Laila A Eissa
Toll-like receptor 4 (TLR-4) plays important roles in innate immunity. Changes in the reduction-oxidation balance of tissues can lead to a pro-inflammatory state and insulin resistance. An action thought to be mediated by TLRs. Omega-3 fatty acids and Peroxisome Proliferator Activated Receptor gamma (PPAR-γ) agonists as pioglitazone are used for decreasing inflammation. The aim of this study is to investigate the anti-diabetic effects of combining omega -3 fatty acid with pioglitazone on type 2 diabetes, and the modifying effects on TLR-4...
June 17, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28715885/the-effects-of-exercise-and-cold-exposure-on-mitochondrial-biogenesis-in-skeletal-muscle-and-white-adipose-tissue
#12
Nana Chung, Jonghoon Park, Kiwon Lim
PURPOSE: The purpose of this study was to determine whether exercise or/and cold exposure regulate mitochondria biogenesis-related gene expression in soleus and inguinal adipose tissue of mice. METHODS: Forty ICR 5-week old male mice were divided into four groups: thermoneutrality-untrained (23 ± 1 °C in room temperature, n=10), cold-water immersion (24 ± 1 °C, n=10), exercise in neutral temperature (34 ± 1 °C, n=10), and exercise in cold temperature (24 ± 1 °C, n=10)...
June 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28714135/yap-suppresses-gluconeogenic-gene-expression-via-pgc1%C3%AE
#13
Yue Hu, Dong-Ju Shin, Hui Pan, Zhiqiang Lin, Jonathan M Dreyfuss, Fernando D Camargo, Ji Miao, Sudha B Biddinger
Cell growth and proliferation are tightly coupled to metabolism, and dissecting the signaling molecules which link these processes is an important step towards understanding development, regeneration and cancer. The transcriptional regulator Yes-associated protein 1 (YAP) is a key regulator of liver size, development and function. We now show that YAP can also suppress gluconeogenic gene expression. Yap deletion in primary hepatocytes potentiates the gluconeogenic gene response to glucagon and dexamethasone, whereas constitutively active YAP suppresses it...
July 17, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28712872/suppression-of-cd36-attenuates-adipogenesis-with-a-reduction-of-p2x7-expression-in-3t3-l1-cells
#14
Huanqing Gao, Danyang Li, Ping Yang, Lei Zhao, Li Wei, Yaxi Chen, Xiong Z Ruan
Adipogenesis is a process of differentiation from preadipocyte into adipocyte, and is regulated by several transcription factors, including the peroxisome proliferator-activated receptor gamma (PPARγ) and the CCAAT-enhancer-binding protein alpha (C/EBPα). CD36 is a membrane protein which contributes to the metabolic disorders such as obesity. Although the previous study demonstrated CD36 participated in the progression of adipogenesis, the mechanism is still unclear. We report here that knockdown of CD36 expression by CD36 small interfering RNA (siRNA) resulted in a reduction of adipocyte differentiation and adipogenic protein expression...
July 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28709933/identification-of-novel-biomarker-and-therapeutic-target-candidates-for-diagnosis-and-treatment-of-follicular-carcinoma
#15
Xianyin Lai, Christopher B Umbricht, Kurt Fisher, Justin Bishop, Qiuying Shi, Shaoxiong Chen
Distinguishing follicular carcinoma from follicular adenoma, based on cytomorphological features, has always been challenging to cytopathologists. Identification of biomarkers for improving diagnostic accuracy is important for clinical management. Meanwhile, it is critical to identify therapeutic target candidates for treatment of follicular carcinoma. Currently, no reliable diagnostic protein biomarkers and therapeutic targets are available. To explore novel protein biomarker and therapeutic target candidates, a liquid chromatography-tandem mass spectrometry approach was applied to analyze control, follicular adenoma, and follicular carcinoma using formalin-fixed, paraffin-embedded tissue samples...
July 11, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28708271/melatonin-protects-against-the-pathological-cardiac-hypertrophy-induced-by-transverse-aortic-constriction-through-activating-pgc-1%C3%AE-in-vivo-and-in-vitro-studies
#16
Mengen Zhai, Zhenhua Liu, Bin Zhang, Lin Jing, Buying Li, Kaifeng Li, Xiuju Chen, Meng Zhang, Bo Yu, Kai Ren, Yang Yang, Wei Yi, Jian Yang, Jincheng Liu, Dinghua Yi, Hongliang Liang, Zhenxiao Jin, Russel J Reiter, Weixun Duan, Shiqiang Yu
Melatonin, a circadian molecule secreted by the pineal gland, confers a protective role against cardiac hypertrophy induced by hyperthyroidism, chronic hypoxia and isoproterenol. However, its role against pressure overload-induced cardiac hypertrophy and the underlying mechanisms remain elusive. In this study, we investigated the pharmacological effects of melatonin on pathological cardiac hypertrophy induced by transverse aortic constriction (TAC). Male C57BL/6 mice underwent TAC or sham surgery at day 0 and were then treated with melatonin (20 mg/kg/day, via drinking water) for 4 or 8 weeks...
July 14, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28701876/effects-of-panax-ginseng-extracts-prepared-at-different-steaming-times-on-thermogenesis-in-rats
#17
Hyung Taek Cho, Jun Ho Kim, Jin Hyup Lee, Young Jun Kim
BACKGROUND: Panax ginseng (PG) has a long history of use in Asian medicine because of its multiple pharmacological activities. It has been considered that PG in a type of white ginseng may induce undesirable thermogenic effects, but not in a type of red ginseng. However, there is a lack of evidence about the correlation between ginsenoside and thermogenesis. METHODS: We investigated the effects of PG with different ginsenoside compositions on body temperature, blood pressure, and thermogenesis-related factors in rats...
July 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28701863/inhibition-of-hypoxia-induced-cyclooxygenase-2-by-korean-red-ginseng-is-dependent-on-peroxisome-proliferator-activated-receptor%C3%A2-gamma
#18
Heewon Song, Young Joo Lee
BACKGROUND: Korean Red Ginseng (KRG) is a traditional herbal medicine made by steaming and drying fresh ginseng. It strengthens the endocrine and immune systems to ameliorate various inflammatory responses. The cyclooxygenase-2 (COX-2)/prostaglandin E2 pathway has important implications for inflammation responses and tumorigenesis. Peroxisome proliferator-activated receptor gamma (PPARγ) is a transcription factor that regulates not only adipogenesis and lipid homeostasis, but also angiogenesis and inflammatory responses...
July 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28699988/type-2-diabetes-associated-genetic-variants-of-fto-lepr-pparg-and-tcf7l2-in-gestational-diabetes-in-a-brazilian-population
#19
Mauren Isfer Anghebem-Oliveira, Bruna Rodrigues Martins, Dayane Alberton, Edneia Amancio de Souza Ramos, Geraldo Picheth, Fabiane Gomes de Moraes Rego
Objective: Gestational diabetes mellitus (GDM) is a metabolic disorder that shares pathophysiologic features with type 2 diabetes mellitus. The aim of this study was to investigate the association of the polymorphisms fat mass and obesity-associated (FTO) rs1421085, leptin receptor (LEPR) rs1137100, rs1137101, peroxisome proliferator-activated receptor gamma (PPARg) rs1801282, and transcription factor 7-like 2 (TCF7L2) rs7901695 with GDM. Subjects and methods: 252 unrelated Euro-Brazilian pregnant women were classified into two groups according to the 2015 criteria of the American and Brazilian Diabetes Association: healthy pregnant women (n = 125) and pregnant women with GDM (n = 127), matched by age...
May 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28698741/association-of-the-pro12ala-polymorphism-with-the-metabolic-parameters-in-women-with-polycystic-ovary-syndrome
#20
Moushira Zaki, Naglaa Hassan, Hala T El-Bassyouni, Sanaa Kamal, Walaa Basha, Osama Azmy, Khalda Amr
AIM: To investigate the association of peroxisome proliferator-activated receptor gamma (PPARG) Pro12Ala polymorphism with polycystic ovary syndrome (PCOS) and its effect on the metabolic parameters in PCOS women. METHODS: The study used PCR to identify the presence of the PPARG Pro12Ala polymorphism in 100 PCOS women and 120 age-matched healthy women. All participants were subjected to anthropometry, biochemical and metabolic evaluation. RESULTS: Significant difference in the genotypes distributions of PPARG Pro12Ala polymorphism was observed among PCOS women and controls (p = 0...
June 15, 2017: Open Access Macedonian Journal of Medical Sciences
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