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https://www.readbyqxmd.com/read/28087413/nesfatin-1-modulates-murine-gastric-vagal-afferent-mechanosensitivity-in-a-nutritional-state-dependent-manner
#1
Stephen J Kentish, Hui Li, Claudine L Frisby, Amanda J Page
Food intake is regulated by vagal afferent signals from the stomach. Nesfatin-1 is an anorexigenic peptide produced within the gastrointestinal tract and has well defined central effects. We aimed to determine if nesfatin-1 can modulate gastric vagal afferent signals in the periphery and further whether this is altered in different nutritional states. Female C57BL/6J mice were fed either a standard laboratory diet (SLD) or a high fat diet (HFD) for 12 weeks or fasted overnight. Plasma nucleobindin-2 (NUCB2; nesfatin-1 precursor)/nesfatin-1 levels were assayed, the expression of NUCB2 in the gastric mucosa and adipose tissue was assessed using real-time quantitative reverse-transcription polymerase chain reaction...
January 10, 2017: Peptides
https://www.readbyqxmd.com/read/28086769/effect-of-ginseng-extract-on-the-tgf-%C3%AE-1-signaling-pathway-in-ccl4-induced-liver-fibrosis-in-rats
#2
Mohamed M Hafez, Sherifa S Hamed, Manal F El-Khadragy, Zeinab K Hassan, Salim S Al Rejaie, Mohamed M Sayed-Ahmed, Naif O Al-Harbi, Khalid A Al-Hosaini, Mohamed M Al-Harbi, Ali R Alhoshani, Othman A Al-Shabanah, Shakir Dekhal Alsharari
BACKGROUND: Liver diseases are major global health problems. Ginseng extract has antioxidant, immune-modulatory and anti-inflammatory activities. This study investigated the effect of ginseng extract on carbon tetrachloride (CCl4)-induced liver fibrosis in rats. METHODS: Male Wistar rats were divided into four groups: control group, ginseng group, CCl4 group and CCl4 + ginseng group. Liver injury was induced by the intraperitoneal (I.P) injection of 3 ml/kg CCl4 (30% in olive oil) weekly for 8 weeks...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28078821/collateral-fattening-when-a-deficit-in-lean-body-mass-drives-overeating
#3
EDITORIAL
Abdul G Dulloo
In his last review entitled "Some Adventures in Body Composition," Gilbert Forbes reminded us that "lean body mass and body fat are in a sense companions." To what extent the lean body mass (or fat-free mass) component in this companionship impacts on energy intake is rarely a topic for discussion, amid a dominant adipocentric view of appetite control. Yet an analysis of the few human studies that have investigated the relationships between objectively measured food intake and body composition reveals a potentially important role for both an increase and a decrease in fat-free mass in the drive to eat...
January 11, 2017: Obesity
https://www.readbyqxmd.com/read/28076929/non-invasive-imaging-demonstrates-clinical-features-of-ankylosing-spondylitis-in-a-rat-adjuvant-model-a-case-study
#4
N Accart, J Dawson, F Kolbinger, I Kramer, N Beckmann
Ankylosing spondylitis is a common rheumatic disease involving both inflammatory erosive osteopenia and bony overgrowth. Main disease features are recapitulated in small rodents challenged with complete Freund's adjuvant. MRI was used to follow longitudinally in vivo changes induced in the rat spine and micro-CT as terminal assessment of bone damage. Histochemistry methods were used to validate these imaging modalities in view of preclinical drug testing and translational applications of spine imaging. Animals were examined using a 3D fat-suppressed gradient-echo sequence, following the injection of gadolinium...
November 2, 2016: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28076319/impact-of-nutrition-on-pollutant-toxicity-an-update-with-new-insights-into-epigenetic-regulation
#5
Jessie B Hoffman, Michael C Petriello, Bernhard Hennig
Exposure to environmental pollutants is a global health problem and is associated with the development of many chronic diseases, including cardiovascular disease, diabetes and metabolic syndrome. There is a growing body of evidence that nutrition can both positively and negatively modulate the toxic effects of pollutant exposure. Diets high in proinflammatory fats, such as linoleic acid, can exacerbate pollutant toxicity, whereas diets rich in bioactive and anti-inflammatory food components, including omega-3 fatty acids and polyphenols, can attenuate toxicant-associated inflammation...
January 11, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28075380/splenic-immune-response-is-down-regulated-in-c57bl-6j-mice-fed-eicosapentaenoic-acid-and-docosahexaenoic-acid-enriched-high-fat-diet
#6
Nikul K Soni, Alastair B Ross, Nathalie Scheers, Otto I Savolainen, Intawat Nookaew, Britt G Gabrielsson, Ann-Sofie Sandberg
Dietary n-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are associated with reduction of inflammation, although the mechanisms are poorly understood, especially how the spleen, as a secondary lymphoid organ, is involved. To investigate the effects of EPA and DHA on spleen gene expression, male C57BL/6J mice were fed high fat diets (HFD) differing in fatty acid composition, either based on corn oil (HFD-CO), or CO enriched with 2 g/100 g EPA and DHA (HFD-ED), for eight weeks. Spleen tissue was analyzed using transcriptomics and for fatty acids profiling...
January 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28074609/rapid-chemical-shift-encoding-with-single-acquisition-single-slab-3d-grase
#7
Hahnsung Kim, Dong-Hyun Kim, Chul-Ho Sohn, Jaeseok Park
PURPOSE: To investigate the feasibility of chemical shift encoded, single-slab 3D GRASE for rapid fat-water separation within a single acquisition. METHODS: The proposed method incorporates signal-to-noise-ratio-optimal chemical shift encoding into single-slab 3D GRASE with variable flip angles. Chemical shift induced phase information was encoded in succession to different positions in k-space by inserting phase encoding blips between adjacent lobes of the oscillating readout gradients...
January 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28074498/imaging-and-t2-relaxometry-of-short-t2-connective-tissues-in-the-knee-using-ultrashort-echo-time-double-echo-steady-state-utedess
#8
Akshay S Chaudhari, Bragi Sveinsson, Catherine J Moran, Emily J McWalter, Ethan M Johnson, Tao Zhang, Garry E Gold, Brian A Hargreaves
PURPOSE: To develop a radial, double-echo steady-state (DESS) sequence with ultra-short echo-time (UTE) capabilities for T2 measurement of short-T2 tissues along with simultaneous rapid, signal-to-noise ratio (SNR)-efficient, and high-isotropic-resolution morphological knee imaging. METHODS: THe 3D radial UTE readouts were incorporated into DESS, termed UTEDESS. Multiple-echo-time UTEDESS was used for performing T2 relaxometry for short-T2 tendons, ligaments, and menisci; and for Dixon water-fat imaging...
January 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28074253/c-abl-inhibition-mitigates-diet-induced-obesity-through-improving-insulin-sensitivity-of-subcutaneous-fat-in-mice
#9
Rong Wu, Jian-Guang Sun, Ji-Qiu Wang, Binhua Li, Qingsong Liu, Guang Ning, Wanzhu Jin, Zengqiang Yuan
AIMS/HYPOTHESIS: High-energy diets are among the main causes of the global epidemic of metabolic disorders, including obesity and type 2 diabetes. The mechanisms of high-energy-diet-induced metabolic disorders are complex and largely unknown. The non-receptor tyrosine kinase c-Abl plays an important role in adipogenesis in vitro but its role in vivo in the regulation of metabolism is still elusive. Hence, we sought to address the role of c-Abl in diet-induced obesity and obesity-associated insulin resistance...
January 10, 2017: Diabetologia
https://www.readbyqxmd.com/read/28073831/deletion-of-protein-kinase-c-lambda-in-pomc-neurons-predisposes-to-diet-induced-obesity
#10
Mauricio D Dorfman, Jordan E Krull, Jarrad M Scarlett, Stephan J Guyenet, Mini P Sajan, Vincent Damian, Hong T Nguyen, Michael Leitges, Gregory J Morton, Robert V Farese, Michael W Schwartz, Joshua P Thaler
Effectors of the phosphoinositide 3-kinase (PI3K) signal transduction pathway contribute to the hypothalamic regulation of energy and glucose homeostasis in divergent ways. Here we show that CNS action of the PI3K signaling intermediate atypical protein kinase C (aPKC) constrains food intake, weight gain, and glucose intolerance in both rats and mice. Pharmacologic inhibition of CNS aPKC activity acutely increases food intake and worsens glucose tolerance in chow-fed rodents and causes excess weight gain during high fat diet (HFD) feeding...
January 10, 2017: Diabetes
https://www.readbyqxmd.com/read/28073830/adiponectin-deficiency-impairs-maternal-metabolic-adaptation-to-pregnancy-in-mice
#11
Liping Qiao, Jean-Sebastien Wattez, Samuel Lee, Amanda Nguyen, Jerome Schaack, William W Hay, Jianhua Shao
Hypoadiponectinemia has been widely observed in patients with gestational diabetes. To investigate the causal role of hypoadiponectinemia in gestational diabetes, adiponectin gene knockout (Adipoq(-/-)) and wild-type (WT) mice were crossed to produce pregnant mouse models with or without adiponectin deficiency. Adenoviral vector-mediated in vivo transduction was used to reconstitute adiponectin during late pregnancy. Results showed that Adipoq(-/-) dams developed glucose intolerance and hyperlipidemia in late pregnancy...
January 10, 2017: Diabetes
https://www.readbyqxmd.com/read/28069950/chronic-innate-immune-activation-of-tbk1-suppresses-mtorc1-activity-and-dysregulates-cellular-metabolism
#12
Maroof Hasan, Vijay K Gonugunta, Nicole Dobbs, Aktar Ali, Guillermo Palchik, Maria A Calvaruso, Ralph J DeBerardinis, Nan Yan
Three-prime repair exonuclease 1 knockout (Trex1(-/-)) mice suffer from systemic inflammation caused largely by chronic activation of the cyclic GMP-AMP synthase-stimulator of interferon genes-TANK-binding kinase-interferon regulatory factor 3 (cGAS-STING-TBK1-IRF3) signaling pathway. We showed previously that Trex1-deficient cells have reduced mammalian target of rapamycin complex 1 (mTORC1) activity, although the underlying mechanism is unclear. Here, we performed detailed metabolic analysis in Trex1(-/-) mice and cells that revealed both cellular and systemic metabolic defects, including reduced mitochondrial respiration and increased glycolysis, energy expenditure, and fat metabolism...
January 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28068880/low-intensity-vibrations-normalize-adipogenesis-induced-morphological-and-molecular-changes-of-adult-mesenchymal-stem-cells
#13
Oznur Baskan, Gulistan Mese, Engin Ozcivici
Bone marrow mesenchymal stem cells that are committed to adipogenesis were exposed daily to high-frequency low-intensity mechanical vibrations to understand molecular, morphological and ultrastructural adaptations to mechanical signals during adipogenesis. D1-ORL-UVA mouse bone marrow mesenchymal stem cells were cultured with either growth or adipogenic medium for 1 week. Low-intensity vibration signals (15 min/day, 90 Hz, 0.1 g) were applied to one group of adipogenic cells, while the other adipogenic group served as a sham control...
January 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28067391/gene-expression-modulation-of-lipid-and-central-energetic-metabolism-related-genes-by-high-fat-diet-intake-in-the-main-homeostatic-tissues
#14
REVIEW
Bàrbara Reynés, Mariona Palou, Andreu Palou
It is generally assumed that high-fat (HF) diets induce characteristic gene expression regulation, which may cause metabolic alterations associated with an increased risk of obesity, metabolic syndrome and other health alterations. However, an integrative analysis of the effects in different tissues is lacking, thus preventing new strategies to prevent or counteract permanent consequences. This review particularly focuses on lipid metabolism gene expression modulation in key homeostatic tissues in response to HF diet intake...
January 9, 2017: Food & Function
https://www.readbyqxmd.com/read/28067368/the-effect-of-arginine-on-the-wnt-%C3%AE-catenin-signaling-pathway-during-porcine-intramuscular-preadipocyte-differentiation
#15
Xiaoling Chen, Yanliu Luo, Gang Jia, Guangmang Liu, Hua Zhao, Zhiqing Huang
Dietary l-arginine supplementation decreases backfat thickness and increases intramuscular fat content in growing-finishing pigs, but the underlying mechanisms are unknown. In this study, the effect of arginine on differentiation of porcine intramuscular preadipocytes was investigated in vitro. We showed that the mRNA and protein expressions of the peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer binding protein α were upregulated by arginine supplementation. Furthermore, the intracellular triglyceride level was increased by arginine supplementation...
January 9, 2017: Food & Function
https://www.readbyqxmd.com/read/28067305/gomisin-n-inhibits-adipogenesis-and-prevents-high-fat-diet-induced-obesity
#16
Min-Kyung Jang, Ye-Rang Yun, Ji-Hyun Kim, Mi-Hee Park, Myeong Ho Jung
Gomisin N (GN) is a physiological lignan derived from Schisandra chinensis. In the present study, we investigated the inhibitory effects of GN on differentiation of 3T3-L1 preadipocytes and the anti-obesity effects of GN in high-fat diet (HFD)-induced obese mice. Incubation with GN significantly inhibited the differentiation of 3T3-L1 preadipocytes in a dose-dependent manner. This inhibitory effect primarily occurred at an early adipogenic stage through impairment of mitotic clonal expansion (MCE) caused by cell cycle arrest at the G1/S phase transition...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28065828/adipocyte-dynamics-and-reversible-metabolic-syndrome-in-mice-with-an-inducible-adipocyte-specific-deletion-of-the-insulin-receptor
#17
Masaji Sakaguchi, Shiho Fujisaka, Weikang Cai, Jonathon N Winnay, Masahiro Konishi, Brian T O'Neill, Mengyao Li, Rubén García-Martín, Hirokazu Takahashi, Jiang Hu, Rohit N Kulkarni, C Ronald Kahn
Insulin and IGF1 signaling are important for adipose tissue development and function; however, their role in mature adipocytes is unclear. Mice with a tamoxifen-inducible knockout of insulin and/or IGF1 receptors (IR/IGF1R) demonstrate a rapid loss of white and brown fat due to increased lipolysis and adipocyte apoptosis. This results in insulin resistance, glucose intolerance, hepatosteatosis, islet hyperplasia with hyperinsulinemia, and cold intolerance. This phenotype, however, resolves over 10-30 days due to a proliferation of preadipocytes and rapid regeneration of both brown and white adipocytes as identified by mTmG lineage tracing...
January 4, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28065827/gastric-bypass-surgery-recruits-a-gut-ppar-%C3%AE-striatal-d1r-pathway-to-reduce-fat-appetite-in-obese-rats
#18
Mohammed K Hankir, Florian Seyfried, Constantin A Hintschich, Thi-Ai Diep, Karen Kleberg, Mathias Kranz, Winnie Deuther-Conrad, Luis A Tellez, Michael Rullmann, Marianne Patt, Jens Teichert, Swen Hesse, Osama Sabri, Peter Brust, Harald S Hansen, Ivan E de Araujo, Ute Krügel, Wiebke K Fenske
Bariatric surgery remains the single most effective long-term treatment modality for morbid obesity, achieved mainly by lowering caloric intake through as yet ill-defined mechanisms. Here we show in rats that Roux-en-Y gastric bypass (RYGB)-like rerouting of ingested fat mobilizes lower small intestine production of the fat-satiety molecule oleoylethanolamide (OEA). This was associated with vagus nerve-driven increases in dorsal striatal dopamine release. We also demonstrate that RYGB upregulates striatal dopamine 1 receptor (D1R) expression specifically under high-fat diet feeding conditions...
January 2, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28065722/peripheral-endocannabinoid-signaling-controls-hyperphagia-in-western-diet-induced-obesity
#19
Donovan A Argueta, Nicholas V DiPatrizio
The endocannabinoid system in the brain and periphery plays a major role in controlling food intake and energy balance. We reported that tasting dietary fats was met with increased levels of the endocannabinoids, 2-arachidonoyl-sn-glycerol (2-AG) and anandamide, in the rat upper small intestine, and pharmacological inhibition of this local signaling event dose-dependently blocked sham feeding of fats. We now investigated the contribution of peripheral endocannabinoid signaling in hyperphagia associated with chronic consumption of a western-style diet in mice ([WD] i...
January 5, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28064013/changes-in-liver-proteins-of-rats-fed-standard-and-high-fat-and-sucrose-diets-induced-by-fish-omega-3-pufas-and-their-combination-with-grape-polyphenols-according-to-quantitative-proteomics
#20
Lucía Méndez, Sergio Ciordia, María Soledad Fernández, Silvia Juárez, Antonio Ramos, Manuel Pazos, José M Gallardo, Josep Lluís Torres, M Rosa Nogués, Isabel Medina
This study considered the physiological modulation of liver proteins due to the supplementation with fish oils under two dietary backgrounds: standard or high in fat and sucrose (HFHS), and their combination with grape polyphenols. By using a quantitative proteomics approach, we showed that the capacity of the supplements for regulating proteins depended on the diet; namely, 10 different proteins changed into standard diets, while 45 changed into the HFHS diets and only scarcely proteins were found altered in common...
December 21, 2016: Journal of Nutritional Biochemistry
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