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Peroxisome proliferator activated receptor

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https://www.readbyqxmd.com/read/29785900/insulin-suppresses-the-ampk-signaling-pathway-to-regulate-lipid-metabolism-in-primary-cultured-hepatocytes-of-dairy-cows
#1
Xinwei Li, Yu Li, Hongyan Ding, Jihong Dong, Renhe Zhang, Dan Huang, Lin Lei, Zhe Wang, Guowen Liu, Xiaobing Li
Dairy cows with type II ketosis display hepatic fat accumulation and hyperinsulinemia, but the underlying mechanism is not completely clear. This study aimed to clarify the regulation of lipid metabolism by insulin in cow hepatocytes. In vitro, cow hepatocytes were treated with 0, 1, 10, or 100 nm insulin in the presence or absence of AICAR (an AMP-activated protein kinase alpha (AMPKα) activator). The results showed that insulin decreased AMPKα phosphorylation. This inactivation of AMPKα increased the gene and protein expression levels of carbohydrate responsive element-binding protein (ChREBP) and sterol regulatory element-binding protein-1c (SREBP-1c), which downregulated the expression of lipogenic genes, thereby decreasing lipid biosynthesis...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29782863/analysis-of-mulberry-leaf-components-in-the-treatment-of-diabetes-using-network-pharmacology
#2
Qi Ge, Liang Chen, Min Tang, Shu Zhang, Lu Gao, Shangshang Ma, Lanlan Liu, Ming Kong, Qin Yao, Keping Chen, Fan Feng
Mulberry leaves are one of the most commonly used medicinal and herbaceous traditional Chinese medicines that are currently considered for the treatment of diabetes mellitus and its complications. The alkaloids, flavonoids, and polysaccharides in mulberry leaves impart regulatory effects on blood sugar levels. To identify the hypoglycemia-related active components in mulberry leaves and their targets, the present study conducted gas chromatography-mass spectrometer (GC/MS), which identified 202 components of mulberry leaf, of which 22 components may have significant curative effects on diabetes mellitus and its complications and chronic inflammation...
May 18, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29782651/pharmacokinetic-and-metabolism-studies-of-bavachinin-through-ultra-high-performance-liquid-chromatography-coupled-with-electrospray-ionization-tandem-mass-spectrometry
#3
Jun Qian, Fan Xie, Yanhong Shi, Jinhang Li, Liuqiang Zhang, Yiming Li, Fujiang Guo, Rui Wang
Bavachinin (BVC), one of the main bioactive prenylated flavonoids derived from Psoralea corylifolia Linn, has a wide variety of pharmacological effects, such as antiangiogenic, antitumour, antiallergic, anti-inflammatory, and antibacterial activities, especially as a pan-peroxisome proliferator-activated receptors (PPARs) agonist. A rapid and sensitive method for quantifying BVC in rat plasma was developed and validated through ultra-high-performance liquid chromatography coupled with electrospray-ionization tandem mass spectrometry...
May 21, 2018: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29781744/endurance-training-alters-ykl40-perm1-and-hsp70-skeletal-muscle-protein-contents-in-men-with-type-2-diabetes-mellitus
#4
Christian Brinkmann, Anika Kuckertz, Thorsten Schiffer, Wilhelm Bloch, Hans-Georg Predel, Klara Brixius
BACKGROUND: The fight against type 2 diabetes mellitus (T2DM) is tremendously challenging. This pilot study investigates whether endurance training (3 times per week for 3 months, moderate intensity) can change the skeletal muscle protein contents of chitinase-3-like protein-1 (YKL40), peroxisome proliferator-activated receptor y coactivator-1 and estrogen-related receptor-induced regulator in muscle-1 (PERM1) and heat-shock protein-70 (HSP70), which have been discussed as novel therapeutically relevant targets...
May 21, 2018: Endocrine Research
https://www.readbyqxmd.com/read/29778745/phytohormone-abscisic-acid-elicits-antinociceptive-effects-in-rats-through-the-activation-of-opioid-and-peroxisome-proliferator-activated-receptors-%C3%AE-%C3%AE
#5
Mahtab Mollashahi, Mehdi Abbasnejad, Saeed Esmaeili-Mahani
The phytohormone abscisic acid exists in animal tissues particularly in the brain. However, its neurophysiological effects have not yet been fully clarified. This study was designed to evaluate the possible antinociceptive effects of abscisic acid on animal models of pain and determine its possible signaling mechanism. Tail-flick, hot-plate and formalin tests were used to assess the nociceptive threshold. All experiments were carried out on male Wistar rats. To determine the role of Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) and opioid receptors on the induction of abscisic acid antinociception, specific antagonists were injected 15min before abscisic acid...
May 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29776318/ppard-rs7770619-polymorphism-in-a-korean-population-association-with-plasma-malondialdehyde-and-impaired-fasting-glucose-or-newly-diagnosed-type-2-diabetes
#6
Minjoo Kim, Minkyung Kim, Hye Jin Yoo, Yao Sun, Sang-Hyun Lee, Jong Ho Lee
Both the peroxisome proliferator-activated receptor delta gene ( PPARD) and malondialdehyde plasma concentrations may play a role in impaired glucose metabolism. The aim of this work was to determine whether PPARD is a candidate gene for impaired fasting glucose or type 2 diabetes and whether a particular genetic variant shows association with plasma malondialdehyde levels. Among the 10 single-nucleotide polymorphisms that were most strongly associated with malondialdehyde, the rs7770619 polymorphism in PPARD was analysed in 1798 subjects with normal fasting glucose, impaired fasting glucose and newly diagnosed type 2 diabetes...
May 1, 2018: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/29773865/perlecan-a-heparan-sulfate-proteoglycan-regulates-systemic-metabolism-with-dynamic-changes-in-adipose-tissue-and-skeletal-muscle
#7
Yuri Yamashita, Satoshi Nakada, Toshinori Yoshihara, Takeshi Nara, Norihiko Furuya, Takashi Miida, Nobutaka Hattori, Eri Arikawa-Hirasawa
Perlecan (HSPG2), a heparan sulfate proteoglycan, is a component of basement membranes and participates in a variety of biological activities. Here, we show physiological roles of perlecan in both obesity and the onset of metabolic syndrome. The perinatal lethality-rescued perlecan knockout (Hspg2-/- -Tg) mice showed a smaller mass and cell size of white adipose tissues than control (WT-Tg) mice. Abnormal lipid deposition, such as fatty liver, was not detected in the Hspg2-/- -Tg mice, and those mice also consumed more fat as an energy source, likely due to their activated fatty acid oxidation...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773642/correction-peroxisome-proliferator-activated-receptor-ppar-%C3%AE-expression-in-t-cells-mediates-gender-differences-in-development-of-t-cell-mediated-autoimmunity
#8
Shannon E Dunn, Shalina S Ousman, Raymond A Sobel, Luis Zuniga, Sergio E Baranzini, Sawsan Youssef, Andrea Crowell, John Loh, Jorge Oksenberg, Lawrence Steinman
No abstract text is available yet for this article.
May 17, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29772784/capsaicin-in-metabolic-syndrome
#9
REVIEW
Sunil K Panchal, Edward Bliss, Lindsay Brown
Capsaicin, the major active constituent of chilli, is an agonist on transient receptor potential vanilloid channel 1 (TRPV1). TRPV1 is present on many metabolically active tissues, making it a potentially relevant target for metabolic interventions. Insulin resistance and obesity, being the major components of metabolic syndrome, increase the risk for the development of cardiovascular disease, type 2 diabetes, and non-alcoholic fatty liver disease. In vitro and pre-clinical studies have established the effectiveness of low-dose dietary capsaicin in attenuating metabolic disorders...
May 17, 2018: Nutrients
https://www.readbyqxmd.com/read/29772226/potential-role-of-peroxisome-proliferator-activated-receptor-gamma-activation-on-serum-visfatin-and-trace-elements-in-high-fat-diet-induced-type-2-diabetes-mellitus
#10
Arshia Tabassum, Syeda Nuzhat Fatima Zaidi, Kausar Yasmeen, Tabassum Mahboob
AIMS: Electrolytes and trace elements dysregulation play an important role in the progression of obesity and diabetes complications. The present study was designed to evaluate the insulin sensitizing effects of peroxisomes proliferators activated receptor gamma (PPAR-γ) agonist on trace elements in obesity induced type 2 diabetes mellitus and correlate with serum visfatin. MATERIALS AND METHODS: Wistar rats were categorized into five groups. Group I served as control; Group II fed on high fat diet (HFD); Group III fed on HFD and treated with rosiglitazone (3 mg/kg) for 7 days; Group IV were T2DM rats induce by HFD and low dose of streptozotocin (i...
May 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29771917/the-differentiation-of-preadipocytes-and-gene-expression-related-to-adipogenesis-in-ducks-anas-platyrhynchos
#11
Shasha Wang, Yang Zhang, Qi Xu, Xiaoya Yuan, Wangcheng Dai, Xiaokun Shen, Zhixiu Wang, Guobin Chang, Zhiquan Wang, Guohong Chen
Meat quality is closely related to adipose tissues in ducks, and adipogenesis is controlled by a complex network of transcription factors tightly acting at different stages of differentiation especially in ducks. The aim of this study was to establish the preadipocyte in vitro culture system and understand the biological characteristics of expansion of duck adipocyte tissue at the cellular and molecular level. We isolated pre-adipocytes from the subcutaneous fat of three breeds of duck and differentiated them into mature adipocytes using a mixture of insulin, rosiglitazone, dexamethasone, 3-isobutyl-1-methylxanthine, and oleic acid over 0,2, 4, 6, and 8 days...
2018: PloS One
https://www.readbyqxmd.com/read/29771444/low-level-laser-irradiation-promotes-the-differentiation-of-bone-marrow-stromal-cells-into-osteoblasts-through-the-apn-wnt-%C3%AE-catenin-pathway
#12
R-F Zhang, Q Wang, A-A Zhang, J-G Xu, L-D Zhai, X-M Yang, X-T Liu
OBJECTIVE: The relationship between adiponectin (APN) pathway and Wnt pathway was explored through BMSCs, and the effect of low-level laser irradiation (LLLI) on bone marrow stromal cells (BMSCs) and its mechanism were further studied. MATERIALS AND METHODS: 3-week-old Sprague-Dawley (SD) rats were selected, and mesenchymal stem cells were separately cultured and purified. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to analyze cell proliferation...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771182/ciliogenesis-is-reciprocally-regulated-by-ppara-and-nr1h4-fxr-through-controlling-autophagy-in-vitro-and-in-vivo
#13
Zhi-Qiang Liu, Joon No Lee, Myeongjoo Son, Jae-Young Lim, Raghbendra Kumar Dutta, Yunash Maharjan, SeongAe Kwak, Goo Taeg Oh, Kyunghee Byun, Seong-Kyu Choe, Raekil Park
The primary cilia are evolutionarily conserved microtubule-based cellular organelles that perceive metabolic status and thus link the sensory system to cellular signaling pathways. Therefore, ciliogenesis is thought to be tightly linked to autophagy, which is also regulated by nutrient-sensing transcription factors, such as PPARA (peroxisome proliferator activated receptor alpha) and NR1H4/FXR (nuclear receptor subfamily 1, group H, member 4). However, the relationship between these factors and ciliogenesis has not been clearly demonstrated...
May 17, 2018: Autophagy
https://www.readbyqxmd.com/read/29768688/ppar-%C3%AE-in-innate-and-adaptive-lung-immunity
#14
REVIEW
Samuel Philip Nobs, Manfred Kopf
The transcription factor PPAR-γ (peroxisome proliferator-activated receptor-γ) is a key regulator of lung immunity exhibiting multiple cell type specific roles in controlling development and function of the lung immune system. It is strictly required for the generation of alveolar macrophages by controlling differentiation of fetal lung monocyte precursors. Furthermore, it plays an important role in lung allergic inflammation by licensing lung dendritic cell t helper 2 (Th2) priming capacity as well as acting as a master transcription factor for pathogenic Th2 cells...
May 16, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29768199/the-autism-related-protein-chd8-cooperates-with-c-ebp%C3%AE-to-regulate-adipogenesis
#15
Yasuyuki Kita, Yuta Katayama, Taichi Shiraishi, Takeru Oka, Tetsuya Sato, Mikita Suyama, Yasuyuki Ohkawa, Keishi Miyata, Yuichi Oike, Michiko Shirane, Masaaki Nishiyama, Keiichi I Nakayama
The gene encoding the chromatin remodeler CHD8 is the most frequently mutated gene in individuals with autism spectrum disorder (ASD). Heterozygous mutations in CHD8 give rise to ASD that is often accompanied by macrocephaly, gastrointestinal complaints, and slender habitus. Whereas most phenotypes of CHD8 haploinsufficiency likely result from delayed neurodevelopment, the mechanism underlying slender habitus has remained unknown. Here, we show that CHD8 interacts with CCAAT/enhancer-binding protein β (C/EBPβ) and promotes its transactivation activity during adipocyte differentiation...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29764990/ire1%C3%AE-prevents-hepatic-steatosis-by-processing-and-promoting-the-degradation-of-select-micrornas
#16
Jie-Mei Wang, Yining Qiu, Zhao Yang, Hyunbae Kim, Qingwen Qian, Qinghua Sun, Chunbin Zhang, Lei Yin, Deyu Fang, Sung Hong Back, Randal J Kaufman, Ling Yang, Kezhong Zhang
Obesity or a high-fat diet represses the endoribonuclease activity of inositol-requiring enzyme 1α (IRE1α), a transducer of the unfolded protein response (UPR) in cells under endoplasmic reticulum (ER) stress. An impaired UPR is associated with hepatic steatosis and nonalcoholic fatty liver disease (NAFLD), which is caused by lipid accumulation in the liver. We found that IRE1α was critical to maintaining lipid homeostasis in the liver by repressing the biogenesis of microRNAs (miRNAs) that regulate lipid mobilization...
May 15, 2018: Science Signaling
https://www.readbyqxmd.com/read/29764933/discovery-of-peroxisome-proliferator-activated-receptor-%C3%AE-ppar%C3%AE-activators-with-a-ligand-screening-system-using-a-human-ppar%C3%AE-expressing-cell-line
#17
Keisuke Tachibana, Tomohiro Yuzuriha, Ryotaro Tabata, Syohei Fukuda, Takashi Maegawa, Rika Takahashi, Keiichi Tanimoto, Hirofumi Tsujino, Kazuto Nunomura, Bangzhong Lin, Yoshiharu Matsuura, Toshiya Tanaka, Takao Hamakubo, Juro Js Sakai, Tatsuhiko Kodama, Tadayuki Kobayashi, Kenji Ishimoto, Hiroyuki Miyachi, Takefumi Doi
Peroxisome proliferator-activated receptor alpha (PPARα) is a ligand-activated transcription factor that belongs to the superfamily of nuclear hormone receptors. PPARα is mainly expressed in the liver, where it activates fatty acid oxidation and lipoprotein metabolism and improves plasma lipid profiles. Therefore, PPARα activators are often used to treat patients with dyslipidemia. To discover additional PPARα activators as potential compounds for use in hypolipidemic drugs, here we established human hepatoblastoma cell lines with luciferase reporter expression from the promoters containing peroxisome proliferator responsive elements (PPRE) and tetracycline-regulated expression of full-length human PPARα to quantify the effects of chemical ligands on PPARα activity...
May 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29764544/-effects-of-peroxisome-proliferator-activated-receptor-%C3%AE-toll-like-receptor-4-tumor-necrosis-factor-%C3%AE-targeted-pathway-on-hyperglycemia-induced-myocardium-inflammation-and-oxidative-stress
#18
Changle Liu, Ruimeng Liu, Xiaohan Wu, Peize Tan, Huaying Fu, Xinghua Wang, Tong Liu, Guangping Li
OBJECTIVE: To investigate the potential effects and mechanism on peroxisome proliferator-activated receptor γ-toll-like receptor 4-tumor necrosis factor-α (PPARγ-TLR4-TNF-α) targeted pathway on hyperglycemia induced myocardium inflammation and oxidative stress. METHODS: Thirty-two Japanese healthy adult rabbits were randomly divided into four groups with 8 rabbits in each group: normal control group (NC group), diabetes mellitus group (DM group), diabetes mellitus + pioglitazone 4 mg×kg-1 ×d-1 and 8 mg×kg-1 ×d-1 groups (DM+PGZ 4 mg and 8 mg groups)...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29763709/fenofibrate-effects-on-carotid-artery-intima-media-thickness-in-adults-with-type-2-diabetes-mellitus-a-field-substudy
#19
Jason A Harmer, Anthony C Keech, Anne-Sophie Veillard, Michael R Skilton, Gerald F Watts, David S Celermajer
AIM: Dyslipidemia in type 2 diabetes contributes to an increased risk of cardiovascular disease. Fenofibrate, a lipid-regulating peroxisome proliferator-activated receptor-α (PPARα) agonist, has been shown to reduce vascular complications in adults with type 2 diabetes. The mechanisms for such benefit, however, are not yet well understood. We examined the effects of fenofibrate on carotid intima-media thickness (IMT), a marker of subclinical atherosclerosis, in adults with type 2 diabetes...
May 12, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29763629/ventricular-pro-arrhythmic-phenotype-arrhythmic-substrate-ageing-and-mitochondrial-dysfunction-in-peroxisome-proliferator-activated-receptor-%C3%AE-coactivator-1%C3%AE-deficient-pgc-1%C3%AE-murine-hearts
#20
Shiraz Ahmad, Haseeb Valli, Karan R Chadda, James Cranley, Kamalan Jeevaratnam, Christopher L-H Huang
INTRODUCTION: Ageing and age-related bioenergetic conditions including obesity, diabetes mellitus and heart failure constitute clinical ventricular arrhythmic risk factors. MATERIALS AND METHODS: Pro-arrhythmic properties in electrocardiographic and intracellular recordings were compared in young and aged, peroxisome proliferator-activated receptor-γ coactivator-1β knockout (Pgc-1β-/- ) and wild type (WT), Langendorff-perfused murine hearts, during regular and programmed stimulation (PES), comparing results by two-way ANOVA...
May 12, 2018: Mechanisms of Ageing and Development
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