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https://www.readbyqxmd.com/read/28647583/the-temporal-expression-of-adipokines-during-spinal-fusion
#1
Sohrab Virk, Alicia L Bertone, Hayam Hamaz Hussein, Jeffrey M Toth, Mari Kaido, Safdar Khan
BACKGROUND CONTEXT: Adipokines are secreted by white adipose tissue and have been associated with fracture healing. Our goal was to report the temporal expression of adipokines during spinal fusion in an established rabbit model. PURPOSE: Our goal was to report the temporal expression of adipokines during spinal fusion in an established rabbit model. STUDY DESIGN: Laboratory animal model METHODS: New Zealand white rabbits were assigned to either sham surgery (n=2), unilateral posterior spinal fusion (n=14) or bilateral posterior spinal fusion (n=14)...
June 21, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28647369/synthesis-of-cytochrome-c-oxidase-1-sco1-inhibits-insulin-sensitivity-by-decreasing-copper-levels-in-adipocytes
#2
Xiang-Bo Wei, Liang Guo, Yang Liu, Shui-Rong Zhou, Yuan Liu, Xin Dou, Shao-Yue Du, Meng Ding, Wan-Qiu Peng, Shu-Wen Qian, Hai-Yan Huang, Qi-Qun Tang
Dysregulation of insulin signaling leads to type 2 diabetes mellitus (T2DM) and other metabolic disorders. Obesity is an important contributor to insulin resistance, and although the understanding of this relationship has improved in recent years, the mechanism of obesity-induced insulin resistance is not completely understood. Disorders of copper metabolism tend to accompany the development of obesity, which increases the risk of insulin resistance. Synthesis of cytochrome c oxidase 1 (SCO1) functions in the assembly of cytochrome c oxidase (COX) and cellular copper homeostasis...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646079/identification-of-flavin-containing-monooxygenase-5-fmo5-as-a-regulator-of-glucose-homeostasis-and-a-potential-sensor-of-gut-bacteria
#3
Flora Scott, Sandra G Gonzalez Malagon, Brett A O'Brien, Diede Fennema, Sunil Veeravalli, Clarissa R Coveney, Ian R Phillips, Elizabeth A Shephard
We have previously identified flavin-containing monooxygenase 5 (FMO5) as a regulator of metabolic ageing. The aim of the present study was to investigate the role of FMO5 in glucose homeostasis and the impact of diet and gut flora on the phenotype of mice in which the Fmo5 gene has been disrupted (Fmo5(-/-) mice). In comparison with wild-type (WT) counterparts, Fmo5(-/-) mice are resistant to age-related changes in glucose homeostasis and maintain the higher glucose tolerance and insulin sensitivity characteristic of young animals...
June 23, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28642596/sgbs-cells-as-a-model-of-human-adipocyte-browning-a-comprehensive-comparative-study-with-primary-human-white-subcutaneous-adipocytes
#4
Chia Rou Yeo, Madhur Agrawal, Shawn Hoon, Asim Shabbir, Manu Kunaal Shrivastava, Shiqi Huang, Chin Meng Khoo, Vanna Chhay, M Shabeer Yassin, E Shyong Tai, Antonio Vidal-Puig, Sue-Anne Toh
The Simpson Golabi Behmel Syndrome (SGBS) pre-adipocyte cell strain is widely considered to be a representative in vitro model of human white pre-adipocytes. A recent study suggested that SGBS adipocytes exhibit an unexpected transient brown phenotype. Here, we comprehensively examined key differences between SGBS adipocytes and primary human white subcutaneous (PHWSC) adipocytes. RNA-Seq analysis revealed that extracellular matrix (ECM)-receptor interaction and metabolic pathways were the top two KEGG pathways significantly enriched in SGBS adipocytes, which included positively enriched mitochondrial respiration and oxidation pathways...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642037/testosterone-regulates-3t3-l1pre-adipocyte-differentiation-and-epididymal-fat-accumulation-in-mice-through-modulating-macrophage-polarization
#5
Xiaojiao Ren, Xiaojian Fu, Xinhua Zhang, Shiqiang Chen, Shuguang Huang, Lun Yao, Guoquan Liu
Low testosterone levels are strongly related to obesity in males. The balance between the classically M1 and alternatively M2 polarized macrophages also plays a critical role in obesity. It is not clear whether testosterone regulates macrophage polarization and then affects adipocyte differentiation. In this report, we demonstrate that testosterone strengthens interleukin (IL) -4-induced M2 polarization and inhibits lipopolysaccharide (LPS) -induced M1 polarization, but has no direct effect on adipocyte differentiation...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28640866/diet-induced-adipose-tissue-expansion-is-mitigated-in-mice-with-a-targeted-inactivation-of-mesoderm-specific-transcript-mest
#6
Rea P Anunciado-Koza, Justin Manuel, Randall L Mynatt, Jingying Zhang, Leslie P Kozak, Robert A Koza
Interindividual variation of white adipose tissue (WAT) expression of mesoderm specific transcript (Mest), a paternally-expressed imprinted gene belonging to the α/β-hydrolase fold protein family, becomes apparent among genetically inbred mice fed high fat diet (HFD) and is positively associated with adipose tissue expansion (ATE). To elucidate a role for MEST in ATE, mice were developed with global and adipose tissue inactivation of Mest. Mice with homozygous (MestgKO) and paternal allelic (MestpKO) inactivation of Mest were born at expected Mendelian frequencies, showed no behavioral or physical abnormalities, and did not perturb expression of the Mest locus-derived microRNA miR-335...
2017: PloS One
https://www.readbyqxmd.com/read/28640444/impact-of-growth-hormone-on-regulation-of-adipose-tissue
#7
Katie M Troike, Brooke E Henry, Elizabeth A Jensen, Jonathan A Young, Edward O List, John J Kopchick, Darlene E Berryman
Increasing prevalence of obesity and obesity-related conditions worldwide has necessitated a more thorough understanding of adipose tissue (AT) and expanded the scope of research in this field. AT is now understood to be far more complex and dynamic than previously thought, which has also fueled research to reevaluate how hormones, such as growth hormone (GH), alter the tissue. In this review, we will introduce properties of AT important for understanding how GH alters the tissue, such as anatomical location of depots and adipokine output...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28637651/pivotal-role-of-o-glcnac-modification-in-cold-induced-thermogenesis-by-brown-adipose-tissue-through-mitochondrial-biogenesis
#8
Natsuko Ohashi, Katsutaro Morino, Shogo Ida, Osamu Sekine, Mengistu Lemecha, Shinji Kume, Shi-Young Park, Cheol Soo Choi, Satoshi Ugi, Hiroshi Maegawa
Adipose tissues considerably influence metabolic homeostasis, and both white (WAT) and brown adipose tissue (BAT) play significant roles in lipid and glucose metabolism. O-GlcNAc modification is characterized by the addition of N-acetylglucosamine to various proteins by O-GlcNAc transferase (Ogt), subsequently modulating various cellular processes. However, little is known about the role of O-GlcNAc modification in adipose tissues. Here, we report the critical role of O-GlcNAc modification in cold-induced thermogenesis...
June 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28636934/the-tmao-producing-enzyme-flavin-containing-monooxygenase-3-regulates-obesity-and-the-beiging-of-white-adipose-tissue
#9
Rebecca C Schugar, Diana M Shih, Manya Warrier, Robert N Helsley, Amy Burrows, Daniel Ferguson, Amanda L Brown, Anthony D Gromovsky, Markus Heine, Arunachal Chatterjee, Lin Li, Xinmin S Li, Zeneng Wang, Belinda Willard, YongHong Meng, Hanjun Kim, Nam Che, Calvin Pan, Richard G Lee, Rosanne M Crooke, Mark J Graham, Richard E Morton, Carl D Langefeld, Swapan K Das, Lawrence L Rudel, Nizar Zein, Arthur J McCullough, Srinivasan Dasarathy, W H Wilson Tang, Bernadette O Erokwu, Chris A Flask, Markku Laakso, Mete Civelek, Sathyamangla V Naga Prasad, Joerg Heeren, Aldons J Lusis, Stanley L Hazen, J Mark Brown
Emerging evidence suggests that microbes resident in the human intestine represent a key environmental factor contributing to obesity-associated disorders. Here, we demonstrate that the gut microbiota-initiated trimethylamine N-oxide (TMAO)-generating pathway is linked to obesity and energy metabolism. In multiple clinical cohorts, systemic levels of TMAO were observed to strongly associate with type 2 diabetes. In addition, circulating TMAO levels were associated with obesity traits in the different inbred strains represented in the Hybrid Mouse Diversity Panel...
June 20, 2017: Cell Reports
https://www.readbyqxmd.com/read/28635632/glucose-and-lipid-dysmetabolism-in-a-rat-model-of-prediabetes-induced-by-a-high-sucrose-diet
#10
Ana Burgeiro, Manuela G Cerqueira, Bárbara M Varela-Rodríguez, Sara Nunes, Paula Neto, Frederico C Pereira, Flávio Reis, Eugénia Carvalho
Glucotoxicity and lipotoxicity are key features of type 2 diabetes mellitus, but their molecular nature during the early stages of the disease remains to be elucidated. We aimed to characterize glucose and lipid metabolism in insulin-target organs (liver, skeletal muscle, and white adipose tissue) in a rat model treated with a high-sucrose (HSu) diet. Two groups of 16-week-old male Wistar rats underwent a 9-week protocol: HSu diet (n = 10)-received 35% of sucrose in drinking water; Control (n = 12)-received vehicle (water)...
June 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28635127/cardiovascular-risk-score-is-linked-to-subcutaneous-adipocyte-size-and-lipid-metabolism
#11
Mikael Rydén, Peter Arner
OBJECTIVE: Although white adipose tissue mass and distribution correlates with cardiovascular disease, the fat cell-specific perturbations underlying this association are not known. We determined the relationship between adipocyte size and lipid metabolism with cardiovascular risk. DESIGN/SUBJECTS: Adipocyte size as well as spontaneous (basal) and hormone-stimulated effects on adipocyte lipid metabolism (lipolysis and lipogenesis) were investigated in abdominal subcutaneous adipose tissue of 304 men and 775 women...
June 21, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28630003/effects-of-mild-calorie-restriction-on-lipid-metabolism-and-inflammation-in-liver-and-adipose-tissue
#12
Chan Yoon Park, Soyoung Park, Min Soo Kim, Hye-Kyeong Kim, Sung Nim Han
Calorie restriction (CR) has been reported to improve lipid metabolism and to decrease inflammatory diseases. However, most existing CR models use 30-50% calorie reduction, which is hard to achieve in humans. We investigated the effects of mild CR on lipid metabolism and inflammatory responses. Male C57BL/6 mice were fed control diet (10% kcal fat, Control) or high fat diet (60% kcal fat, HFD) ad libitum or reduced amount of control diet to achieve 15% CR for 16 wks. Body weights, white adipose tissue weights, liver triacylglycerol levels, and serum fetuin-A levels were lower in CR than in the Control...
June 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28629946/phytol-induced-pathology-in-2-hydroxyacyl-coa-lyase-hacl1-deficient-mice-evidence-for-a-second-non-hacl1-related-lyase
#13
Serena Mezzar, Evelyn De Schryver, Stanny Asselberghs, Els Meyhi, Petruta L Morvay, Myriam Baes, Paul P Van Veldhoven
2-Hydroxyacyl-CoA lyase (HACL1) is a key enzyme of the peroxisomal α-oxidation of phytanic acid. To better understand its role in health and disease, a mouse model lacking HACL1 was investigated. Under normal conditions, these mice did not display a particular phenotype. However, upon dietary administration of phytol, phytanic acid accumulated in tissues, mainly in liver and serum of KO mice. As a consequence of phytanic acid (or a metabolite) toxicity, KO mice displayed a significant weight loss, absence of abdominal white adipose tissue, enlarged and mottled liver and reduced hepatic glycogen and triglycerides...
June 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28627196/comparison-of-gene-expression-profile-between-blood-cells-and-white-adipose-tissue-of-patients-with-obesity
#14
Marcela Augusta de Souza Pinhel, Natália Yumi Noronha, Carolina Ferreira Nicoletti, Driele Cristina Gomes Quinhoneiro, Bruno Affonso Parenti Oliveira, Cristiana Cortes-Oliveira, Wilson Salgado-Junior, Wilson Araújo da Silva-Junior, Júlio Sergio Marchini, Dorotéia Rossi Silva Souza, Carla Barbosa Nonino
INTRODUCTION: Gene expression analyses from peripheral blood mononuclear cells (PBMC) and white adipose tissue are conflicting. It seems that results from single tissue are not enough to explain how changes affect humans as a complex biological system. OBJECTIVE: The aim of this study was to compare, from obesity subjects, PBMC and white adipose tissue gene expression that regulates adipogenesis (perilipin 1 [PLIN1], adrenoreceptor beta 3 [ADRB3] and peroxisome proliferator-activated receptor [PPARG2]) and the energy metabolism (uncoupling protein UCP1, UCP2 and UCP3) process...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28626141/dietary-starfish-oil-prevents-hepatic-steatosis-and-hyperlipidemia-in-c57bl-6n-mice-fed-high-fat-diet
#15
Fumiaki Beppu, Haoqi Li, Kazuaki Yoshinaga, Toshiharu Nagai, Akihiko Yoshinda, Atsushi Kubo, Jota Kanda, Naohiro Gotoh
Starfish oil (SO) is characterized by functional lipids, including n-3 polyunsaturated fatty acid (both in the form of triacylglycerol and in the form of phospholipid), and carotenoids, which may exert beneficial effects on metabolic disorders in obesity-associated diseases. In the present study, the effect of SO on dysregulation of lipid metabolism was examined using C57BL/6N mice treated with high-fat (HF) diet. Mice were fed HF, HF with 2% SO, or HF with 5% SO diet for 8 weeks. Weight gain, blood glucose, serum and hepatic lipid contents, and hepatic fatty acid composition were measured...
June 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28624262/dibenzazepine-loaded-nanoparticles-induce-local-browning-of-white-adipose-tissue-to-counteract-obesity
#16
Chunhui Jiang, Mario Alberto Cano-Vega, Feng Yue, Liangju Kuang, Naagarajan Narayanan, Gozde Uzunalli, Madeline P Merkel, Shihuan Kuang, Meng Deng
Inhibition of Notch signaling via systemic drug administration triggers conversion of white adipocytes into beige adipocytes (browning) and reduces adiposity. However, translation of this discovery into clinical practice is challenged by potential off-target side effects and lack of control over the location and temporal extent of beige adipocyte biogenesis. Here, we demonstrate an alternative approach to stimulate browning using nanoparticles (NPs) composed of FDA-approved poly(lactide-co-glycolide) that enable sustained local release of a Notch inhibitor (dibenzazepine, DBZ)...
June 15, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28622294/hepatocyte-nuclear-factor-1b-is-a-novel-negative-regulator-of-white-adipocyte-differentiation
#17
Xin Wang, Hao Wu, Weihua Yu, Jiangzheng Liu, Jie Peng, Nai Liao, Jieling Zhang, Xiaodi Zhang, Chunxu Hai
Hepatocyte nuclear factor 1b (HNF1b) is a transcription factor belonging to the HNF family. We aimed to investigate the role of HNF1b in white adipocyte differentiation. The expression of HNF1b was reduced in white adipose tissue (WAT) of both diet-induced and genetic obese mice and decreased during the process of 3T3-L1 adipocyte differentiation. Downregulation of HNF1b enhanced 3T3-L1 adipocyte differentiation and upregulation of HNF1b inhibited this process. Upregulation of HNF1b inhibited peroxisome proliferator-activated receptor γ (PPARγ) and its target gene expression, while downregulation of HNF1b increased those genes expression...
June 16, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28620456/effects-of-physical-activity-on-the-link-between-pgc-1a-and-fndc5-in-muscle-circulating-%C3%AE-risin-and-ucp1-of-white-adipocytes-in-humans-a-systematic-review
#18
Petros C Dinas, Ian M Lahart, James A Timmons, Per-Arne Svensson, Yiannis Koutedakis, Andreas D Flouris, George S Metsios
Background: Exercise may activate a brown adipose-like phenotype in white adipose tissue. The aim of this systematic review was to identify the effects of physical activity on the link between peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1a) and fibronectin type III domain-containing protein 5 (FNDC5) in muscle, circulating Irisin and uncoupling protein one (UCP1) of white adipocytes in humans. Methods: Two databases (PubMed 1966 to 08/2016 and EMBASE 1974 to 08/2016) were searched using an appropriate algorithm...
2017: F1000Research
https://www.readbyqxmd.com/read/28620356/quantifying-biochemical-alterations-in-brown-and-subcutaneous-white-adipose-tissues-of-mice-using-fourier-transform-infrared-widefield-imaging
#19
Ebrahim Aboualizadeh, Owen T Carmichael, Ping He, Diana C Albarado, Christopher D Morrison, Carol J Hirschmugl
Stimulating increased thermogenic activity in adipose tissue is an important biological target for obesity treatment, and label-free imaging techniques with the potential to quantify stimulation-associated biochemical changes to the adipose tissue are highly sought after. In this study, we used spatially resolved Fourier transform infrared (FTIR) imaging to quantify biochemical changes caused by cold exposure in the brown and subcutaneous white adipose tissues (BAT and s-WAT) of 6 week-old C57BL6 mice exposed to 30°C (N = 5), 24°C (N = 5), and 10°C (N = 5) conditions for 10 days...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28618245/multi-omics-integrative-investigation-of-fatty-acid-metabolism-in-obese-and-lean-subcutaneous-tissue
#20
Flavia Badoud, Dyanne Brewer, Armen Charchoglyan, Daniel J Cuthbertson, David M Mutch
White adipose tissue (WAT) plays a central role in whole-body energy homeostasis through storage and release of fatty acids. A deeper understanding of the complex and highly integrated pathways regulating WAT fatty acid metabolism, and how they are altered with obesity, is necessary for diagnostic and therapeutic innovations in nutritional disorders. In this multi-omics study, we investigated the influence of obesity on fatty acid metabolism in human subcutaneous adipose tissue (SAT) using an approach that integrated transcriptomic, peptidomic, and fatty acid analyses...
June 15, 2017: Omics: a Journal of Integrative Biology
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