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https://www.readbyqxmd.com/read/28428261/ebf2-transcriptionally-regulates-brown-adipogenesis-via-the-histone-reader-dpf3-and-the-baf-chromatin-remodeling-complex
#1
Suzanne N Shapira, Hee-Woong Lim, Sona Rajakumari, Alexander P Sakers, Jeff Ishibashi, Matthew J Harms, Kyoung-Jae Won, Patrick Seale
The transcription factor early B-cell factor 2 (EBF2) is an essential mediator of brown adipocyte commitment and terminal differentiation. However, the mechanisms by which EBF2 regulates chromatin to activate brown fat-specific genes in adipocytes were unknown. ChIP-seq (chromatin immunoprecipitation [ChIP] followed by deep sequencing) analyses in brown adipose tissue showed that EBF2 binds and regulates the activity of lineage-specific enhancers. Mechanistically, EBF2 physically interacts with the chromatin remodeler BRG1 and the BAF chromatin remodeling complex in brown adipocytes...
April 20, 2017: Genes & Development
https://www.readbyqxmd.com/read/28417910/effects-of-three-commercially-available-sports-drinks-on-substrate-metabolism-and-subsequent-endurance-performance-in-a-postprandial-state
#2
Lu Qin, Qi-Rong Wang, Zi-Long Fang, Ting Wang, Ai-Qi Yu, Yu-Jie Zhou, Yi Zheng, Mu-Qing Yi
Purpose: To examine the effects of commercially available sports beverages with various components on substrate metabolism and subsequent performance. Methods: Two studies were conducted in a double-blinded, counterbalanced manner. Study I was designed to determine the glycemic index, while study II determined the utilization of substrates and subsequent exercise performance. Ten healthy male participants (age 21.70 ± 2.41 years, height 176.60 ± 5.23 cm, weight 66.58 ± 5.38 kg, V̇O2max 48.1 ± 8.4 mL/kg/min) participated in both study I and study II...
April 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28407742/higher-neonatal-growth-rate-and-body-condition-score-at-7%C3%A2-months-are-predictive-factors-of-obesity-in-adult-female-beagle-dogs
#3
Lucie Leclerc, Chantal Thorin, John Flanagan, Vincent Biourge, Samuel Serisier, Patrick Nguyen
BACKGROUND: The risks during early growth on becoming overweight in adulthood are widely studied in humans. However, early-life predictive factors for canine adult overweight and obesity have not yet been studied. To identify factors that may help explain the development of overweight and obesity at adulthood in dogs, a longitudinal study of 2 years was conducted in 24 female Beagle dogs of the same age, sexual status, and raised under identical environmental conditions. By means of a hierarchical classification on principal components with the following quantitative values: fat-free mass (FFM), percentage fat mass and pelvic circumference at 2 years of age, three groups of dogs were established and were nominally named: ideal weight (IW, n = 9), slightly overweight (OW1, n = 6) and overweight (OW2, n = 9)...
April 13, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28390717/the-effects-of-heat-stress-on-protein-metabolism-in-lactating-holstein-cows
#4
S T Gao, J Guo, S Y Quan, X M Nan, M V Sanz Fernandez, L H Baumgard, D P Bu
Heat stress (HS) decreases milk protein synthesis beyond what would be expected based on the concomitant reduction in feed intake. The aim of the present study was to evaluate the direct effects of HS on milk protein production. Four multiparous, lactating Holstein cows (101 ± 10 d in milk, 574 ± 36 kg of body weight, 38 ± 2 kg of milk/d) were individually housed in environmental chambers and randomly allocated to 1 of 2 groups in a crossover design. The study was divided into 2 periods with 2 identical experimental phases (control phase and trial phase) within each period...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28386694/effect-of-alcohol-after-muscle-damaging-resistance-exercise-on-muscular-performance-recovery-and-inflammatory-capacity-in-women
#5
Danielle E Levitt, Hui-Ying Luk, Anthony A Duplanty, Brian K McFarlin, David W Hill, Jakob L Vingren
PURPOSE: To investigate the effect of acute alcohol consumption on muscular performance recovery, assessed by maximal torque production, and on inflammatory capacity, assessed by lipopolysaccharide (LPS)-stimulated cytokine production, following muscle-damaging resistance exercise in women. METHODS: Thirteen recreationally resistance-trained women completed two identical exercise bouts (300 maximal single-leg eccentric leg extensions) followed by alcohol (1.09 g ethanol kg(-1) fat-free body mass) or placebo ingestion...
April 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28376142/characterization-and-expression-analysis-of-attacins-antimicrobial-peptide-encoding-genes-from-the-desert-beetle-microdera-punctipennis-in-response-to-low-temperatures
#6
J Q Li, X Y Lu, J Ma
BACKGROUND: Antimicrobial peptides (AMPs) constitute the insect innate immune defense system. AMP production is usually induced by microbes. However, mounting evidence links insect immune reaction to cold hardiness. OBJECTIVE: We aimed at characterizing two attacins, MpAtt1 and MpAtt2, from the desert beetle Microdera punctipennis in Coleoptera and investigating the expression profiles of the two genes in response to cold stress. RESULTS: Full lengths MpAtt1 and MpAtt2 cDNAs were obtained from low temperature transcriptomic data...
January 2017: Cryo Letters
https://www.readbyqxmd.com/read/28372849/effect-of-oral-protein-hydrolysate-on-glucose-control-in-patients-with-gestational-diabetes
#7
Langeza Saleh, Nicole L Schrier, Maaike J Bruins, Eric A P Steegers, Anton H van den Meiracker, Willy Visser
BACKGROUND & AIMS: In type 2 diabetic patients, a casein-based protein hydrolysate has been shown to increase plasma insulin and to lower plasma glucose. In the present study, we examined the acute and prolonged effects of protein hydrolysate on postprandial glucose, insulin and C-peptide responses after a standardised breakfast and the effect on daily glucose control in patients with gestational diabetes. METHODS: In a single-centre randomised double blind placebo controlled design, patients with mild gestational diabetes (no use of insulin or oral antidiabetic agents; n = 26/group) were allocated to receive a protein hydrolysate drink, 8...
March 16, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28365125/development-of-subcutaneous-fat-in-spanish-and-latin-american-children-and-adolescents-reference-values-for-biceps-triceps-subscapular-and-suprailiac-skinfolds
#8
M D Marrodán, M González-Montero de Espinosa, Á Herráez, E L Alfaro, I F Bejarano, M Carmenate, D B Lomaglio, N López-Ejeda, A Martínez, M S Mesa, B Méndez Pérez, J M Meléndez, S Moreno-Romero, J L Pacheco, V Vázquez, J E Dipierri
Subcutaneous fat skinfolds represent a reliable assessment instrument of adiposity status. This study provides current percentile references for four subcutaneous skinfolds (biceps, triceps, subscapular, suprailiac) applicable to children and adolescents in Spain and in Latin American countries where data are scarce. The design consisted of a cross-sectional multicenter study performed with identical methods in 5 countries (Argentina, Cuba, Mexico, Spain and Venezuela). Total sample comprised 9163 children and youths (boys 4615 - girls 4548) aged 6-18 years, healthy and without apparent pathologies...
February 22, 2017: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/28352942/long-term-dietary-nitrite-and-nitrate-deficiency-causes-the-metabolic-syndrome-endothelial-dysfunction-and-cardiovascular-death-in-mice
#9
Mika Kina-Tanada, Mayuko Sakanashi, Akihide Tanimoto, Tadashi Kaname, Toshihiro Matsuzaki, Katsuhiko Noguchi, Taro Uchida, Junko Nakasone, Chisayo Kozuka, Masayoshi Ishida, Haruaki Kubota, Yuji Taira, Yuichi Totsuka, Shin-Ichiro Kina, Hajime Sunakawa, Junichi Omura, Kimio Satoh, Hiroaki Shimokawa, Nobuyuki Yanagihara, Shiro Maeda, Yusuke Ohya, Masayuki Matsushita, Hiroaki Masuzaki, Akira Arasaki, Masato Tsutsui
AIMS/HYPOTHESIS: Nitric oxide (NO) is synthesised not only from L-arginine by NO synthases (NOSs), but also from its inert metabolites, nitrite and nitrate. Green leafy vegetables are abundant in nitrate, but whether or not a deficiency in dietary nitrite/nitrate spontaneously causes disease remains to be clarified. In this study, we tested our hypothesis that long-term dietary nitrite/nitrate deficiency would induce the metabolic syndrome in mice. METHODS: To this end, we prepared a low-nitrite/nitrate diet (LND) consisting of an amino acid-based low-nitrite/nitrate chow, in which the contents of L-arginine, fat, carbohydrates, protein and energy were identical with a regular chow, and potable ultrapure water...
March 28, 2017: Diabetologia
https://www.readbyqxmd.com/read/28352663/retinol-binding-protein-7-is-an-endothelium-specific-ppar%C3%AE-cofactor-mediating-an-antioxidant-response-through-adiponectin
#10
Chunyan Hu, Henry L Keen, Ko-Ting Lu, Xuebo Liu, Jing Wu, Deborah R Davis, Stella-Rita C Ibeawuchi, Silke Vogel, Frederick W Quelle, Curt D Sigmund
Impaired PPARγ activity in endothelial cells causes oxidative stress and endothelial dysfunction which causes a predisposition to hypertension, but the identity of key PPARγ target genes that protect the endothelium remain unclear. Retinol-binding protein 7 (RBP7) is a PPARγ target gene that is essentially endothelium specific. Whereas RBP7-deficient mice exhibit normal endothelial function at baseline, they exhibit severe endothelial dysfunction in response to cardiovascular stressors, including high-fat diet and subpressor angiotensin II...
March 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28348140/a-classification-system-for-zebrafish-adipose-tissues
#11
James E N Minchin, John F Rawls
The zebrafish model system offers significant utility for in vivo imaging of adipose tissue (AT) dynamics, and screening to identify chemical and genetic modifiers of adiposity. In particular, AT can be accurately quantified in live zebrafish using fluorescent lipophilic dyes (FLDs). Although, this methodology offers considerable promise, the comprehensive identification and classification of zebrafish ATs has not been performed. Here we utilize FLDs and in vivo imaging to systematically identify, classify and quantify the zebrafish AT pool...
March 27, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28330582/adipocyte-accumulation-in-the-bone-marrow-during-obesity-and-aging-impairs-stem-cell-based-hematopoietic-and-bone-regeneration
#12
Thomas H Ambrosi, Antonio Scialdone, Antonia Graja, Sabrina Gohlke, Anne-Marie Jank, Carla Bocian, Lena Woelk, Hua Fan, Darren W Logan, Annette Schürmann, Luis R Saraiva, Tim J Schulz
Aging and obesity induce ectopic adipocyte accumulation in bone marrow cavities. This process is thought to impair osteogenic and hematopoietic regeneration. Here we specify the cellular identities of the adipogenic and osteogenic lineages of the bone. While aging impairs the osteogenic lineage, high-fat diet feeding activates expansion of the adipogenic lineage, an effect that is significantly enhanced in aged animals. We further describe a mesenchymal sub-population with stem cell-like characteristics that gives rise to both lineages and, at the same time, acts as a principal component of the hematopoietic niche by promoting competitive repopulation following lethal irradiation...
March 13, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28322071/an-additional-bolus-of-rapid-acting-insulin-to-normalise-postprandial-cardiovascular-risk-factors-following-a-high-carbohydrate-high-fat-meal-in-patients-with-type-1-diabetes-a-randomised-controlled-trial
#13
Matthew D Campbell, Mark Walker, Ramzi A Ajjan, Karen M Birch, Javier T Gonzalez, Daniel J West
AIM: To evaluate an additional rapid-acting insulin bolus on postprandial lipaemia, inflammation and pro-coagulation following high-carbohydrate high-fat feeding in people with type 1 diabetes. METHODS: A total of 10 males with type 1 diabetes [HbA1c 52.5 ± 5.9 mmol/mol (7.0% ± 0.5%)] underwent three conditions: (1) a low-fat (LF) meal with normal bolus insulin, (2), a high-fat (HF) meal with normal bolus insulin and (3) a high-fat meal with normal bolus insulin with an additional 30% insulin bolus administered 3-h post-meal (HFA)...
March 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28302705/brown-and-beige-adipose-tissues-phenotype-and-metabolic-potential-in-mice-and-men
#14
Kanta Chechi, Wouter David van Marken Lichtenbelt, Denis Richard
With the recent re-discovery of brown fat in adult humans, our outlook on adipose tissue biology has undergone a paradigm shift. While we attempt to identify, recruit and activate classic brown fat stores in humans, identification of beige/brite adipocytes has also raised the possibility of browning our white fat stores. Whether such transformation of human white fat depots can be achieved in order to enhance the whole-body oxidative potential remains to be seen. Evidence to-date, however, largely points towards a major oxidative role only for classic brown fat depots in rodents and in humans (e...
March 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28293627/integrating-mirna-and-mrna-expression-profiling-uncovers-mirnas-underlying-fat-deposition-in-sheep
#15
Guangxian Zhou, Xiaolong Wang, Chao Yuan, Danju Kang, Xiaochun Xu, Jiping Zhou, Rongqing Geng, Yuxin Yang, Zhaoxia Yang, Yulin Chen
MicroRNAs (miRNAs) are endogenous, noncoding RNAs that regulate various biological processes including adipogenesis and fat metabolism. Here, we adopted a deep sequencing approach to determine the identity and abundance of miRNAs involved in fat deposition in adipose tissues from fat-tailed (Kazakhstan sheep, KS) and thin-tailed (Tibetan sheep, TS) sheep breeds. By comparing HiSeq data of these two breeds, 539 miRNAs were shared in both breeds, whereas 179 and 97 miRNAs were uniquely expressed in KS and TS, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28288562/genetic-diversity-and-signatures-of-selection-in-various-goat-breeds-revealed-by-genome-wide-snp-markers
#16
Luiz F Brito, James W Kijas, Ricardo V Ventura, Mehdi Sargolzaei, Laercio R Porto-Neto, Angela Cánovas, Zeny Feng, Mohsen Jafarikia, Flávio S Schenkel
BACKGROUND: The detection of signatures of selection has the potential to elucidate the identities of genes and mutations associated with phenotypic traits important for livestock species. It is also very relevant to investigate the levels of genetic diversity of a population, as genetic diversity represents the raw material essential for breeding and has practical implications for implementation of genomic selection. A total of 1151 animals from nine goat populations selected for different breeding goals and genotyped with the Illumina Goat 50K single nucleotide polymorphisms (SNP) Beadchip were included in this investigation...
March 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28285351/cavin-3-prkcdbp-deficiency-reduces-the-density-of-caveolae-in-smooth-muscle
#17
Baoyi Zhu, Karl Swärd, Mari Ekman, Bengt Uvelius, Catarina Rippe
Cavins belong to a family of proteins that contribute to the formation of caveolae, which are membrane organelles with functional roles in muscle and fat. Here, we investigate the effect of cavin-3 ablation on vascular and urinary bladder structure and function. Arteries and urinary bladders from mice lacking cavin-3 (knockout: KO) and from controls (wild type: WT) were examined. Our studies revealed that the loss of cavin-3 resulted in ∼40% reduction of the caveolae protein cavin-1 in vascular and bladder smooth muscle...
March 11, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28282466/fat-mass-and-obesity-associated-gene-fto-is-associated-to-eating-disorders-susceptibility-and-moderates-the-expression-of-psychopathological-traits
#18
Giovanni Castellini, Marica Franzago, Silvia Bagnoli, Lorenzo Lelli, Michela Balsamo, Milena Mancini, Benedetta Nacmias, Valdo Ricca, Sandro Sorbi, Ivana Antonucci, Liborio Stuppia, Giovanni Stanghellini
Eating Disorders (EDs) show a multifactorial etiopathogenesis including environmental, psychological and biological factors. In the present study, we propose a model of interactions between genetic vulnerability-represented by Fat Mass and Obesity-Associated (FTO) gene-and stable psychopathological traits, such as bodily disorders and emotion dysregulation for EDs patients. The distribution of a polymorphism of the FTO (rs9939609 T>A) was evaluated in a series of 250 EDs patients and in a group of 119 healthy control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28280493/t-cells-specific-for-a-self-peptide-of-apob-100-exacerbate-aortic-atheroma-in-murine-atherosclerosis
#19
Michael K Shaw, Kevin Y Tse, Xiaoqing Zhao, Kathryn Welch, Daniel T Eitzman, Raghavendar R Thipparthi, Paul C Montgomery, Ryan Thummel, Harley Y Tse
On the basis of mouse I-A(b)-binding motifs, two sequences of the murine apolipoprotein B-100 (mApoB-100), mApoB-1003501-3515 (designated P3) and mApoB-100978-992 (designated P6), were found to be immunogenic. In this report, we show that P6 is also atherogenic. Immunization of Apoe(-/-) mice fed a high-fat diet (HFD) with P6 resulted in enhanced development of aortic atheroma as compared to control mice immunized with an irrelevant peptide MOG35-55 or with complete Freund's adjuvant alone. Adoptive transfer of lymph node cells from P6-immunized donor mice to recipients fed an HFD caused exacerbated aortic atheromas, correlating P6-primed cells with disease development...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28278002/quantifying-abdominal-adipose-tissue-and-thigh-muscle-volume-and-hepatic-proton-density-fat-fraction-repeatability-and-accuracy-of-an-mr-imaging-based-semiautomated-analysis-method
#20
Michael S Middleton, William Haufe, Jonathan Hooker, Magnus Borga, Olof Dahlqvist Leinhard, Thobias Romu, Patrik Tunón, Gavin Hamilton, Tanya Wolfson, Anthony Gamst, Rohit Loomba, Claude B Sirlin
Purpose To determine the repeatability and accuracy of a commercially available magnetic resonance (MR) imaging-based, semiautomated method to quantify abdominal adipose tissue and thigh muscle volume and hepatic proton density fat fraction (PDFF). Materials and Methods This prospective study was institutional review board- approved and HIPAA compliant. All subjects provided written informed consent. Inclusion criteria were age of 18 years or older and willingness to participate. The exclusion criterion was contraindication to MR imaging...
May 2017: Radiology
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