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https://www.readbyqxmd.com/read/28723567/cold-inducible-sirt6-regulates-thermogenesis-of-brown-and-beige-fat
#1
Lu Yao, Xiaona Cui, Qi Chen, Xiaoying Yang, Fude Fang, Jun Zhang, Guoqing Liu, Wanzhu Jin, Yongsheng Chang
Promoting development and function of brown and beige fat may reduce obesity. Here, we show that fat SIRT6 expression is markedly induced by cold exposure and a β-adrenergic agonist. Deletion of SIRT6 in adipose tissue impairs the thermogenic function of brown adipocytes, causing a morphological "whitening" of brown fat, reduced oxygen (O2) consumption, obesity, decreased core body temperature, and cold sensitivity. Fat SIRT6-deleted mice exhibit increased blood glucose levels, severe insulin resistance, and hepatic steatosis...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28722204/loss-of-the-tumor-suppressor-gene-aip-mediates-the-browning-of-human-brown-fat-tumors
#2
Linda Magnusson, Nils Hansen, Karim H Saba, Jenny Nilsson, Thoas Fioretos, Pehr Rissler, Karolin H Nord
Human brown fat tumors (hibernomas) display concomitant loss of the tumor suppressor genes MEN1 and AIP. In the present study, we hypothesized that the brown fat phenotype is attributed to these mutations. Accordingly, we demonstrate that silencing of AIP in human brown preadipocytic and white fat cell lines results in the induction of the brown fat marker UCP1. In human adipocytic tumors, loss of MEN1 was found both in white (one out of 51 lipomas) and brown fat tumors. In contrast, concurrent loss of AIP was always accompanied by a brown fat morphology...
July 19, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28720757/integrative-analyses-of-translatome-and-transcriptome-reveal-important-translational-controls-in-brown-and-white-adipose-regulated-by-micrornas
#3
David W Reid, Dan Xu, Peng Chen, Hongyuan Yang, Lei Sun
The epidemic of obesity and diabetes has markedly spurred the research interest in adipocyte biology. Brown adipocytes are specialized for energy expenditure and of therapeutic interest for treatment of metabolic diseases, but how brown adipocytes are distinguished from white adipocytes at the level of translational regulation remains poorly understood. To systemically determine the translational control of gene expression in adipose tissue, we performed ribosome profiling and RNA-seq in parallel to depict the translatome and transcriptome changes during primary brown and white adipogenesis, and between brown and white adipose tissue...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719892/cinnamaldehyde-ameliorates-diet-induced-obesity-in-mice-by-inducing-browning-of-white-adipose-tissue
#4
Jiacheng Zuo, Dandan Zhao, Na Yu, Xin Fang, Qianqian Mu, Yue Ma, Fangfang Mo, Rui Wu, Rufeng Ma, Lili Wang, Ruyuan Zhu, Haixia Liu, Dongwei Zhang, Sihua Gao
BACKGROUND/AIMS: Obesity has become a major health concern with few effective medications. Cinnamaldehyde (CA) has been reported to exhibit anti-diabetic and anti-inflammatory properties. However, whether CA shows anti-obesity activity remains unknown. Therefore, the present study aimed to investigate the potential anti-obesity effects of CA on mice fed a high-fat diet (HFD) and to explore the possible mechanisms involved. METHODS: Male C57BL/6J mice fed an HFD for 12 weeks were supplemented with CA (40 mg/kg/day) via gavage for an additional 8 weeks...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28712975/fto-genotype-and-weight-status-among-preadolescents-assessing-the-mediating-effects-of-obesogenic-appetitive-traits
#5
Jennifer A Emond, Alison Tovar, Zhigang Li, Reina K Lansigan, Diane Gilbert-Diamond
Polymorphisms in the Fat Mass and Obesity Associated (FTO) gene are robustly associated with overweight and obesity among children, although the underlying mechanisms are poorly understood. We tested if appetitive traits partially mediated the association between FTO genotype and increased BMI among a sample of US preadolescents. Data were from 178 unrelated 9-10 year olds who participated in an experimental study between 2013 and 2015. Children's DNA was isolated from buccal swabs, and the rs9939609 SNP in the FTO gene was genotyped...
July 13, 2017: Appetite
https://www.readbyqxmd.com/read/28711219/effect-of-feeding-three-lysine-to-energy-diets-on-growth-body-composition-and-age-at-puberty-in-replacement-gilts
#6
J A Calderón Díaz, J L Vallet, R D Boyd, C A Lents, T J Prince, A E DeDecker, C E Phillips, G Foxcroft, K J Stalder
This study evaluated the effect of diets differing in standard ileal digestible (SID) lysine on lysine intake, growth rate, body composition and age at puberty on maternal line gilts. Crossbred Large White×Landrace gilts (n=641) were fed corn-soybean diets differing in SID lysine concentration (%, g SID lysine:Mcal ME); diets were not isocaloric. Gilts received three grower, finisher diet combinations: low (0.68% lysine grower, 0.52% lysine finisher), medium (0.79% lysine grower, 0.60% lysine finisher) or high (0...
June 23, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28710506/obese-versus-normal-weight-late-adolescent-females-have-inferior-trabecular-bone-microarchitecture-a-pilot-case-control-study
#7
Joseph M Kindler, Norman K Pollock, Hannah L Ross, Christopher M Modlesky, Harshvardhan Singh, Emma M Laing, Richard D Lewis
Though still a topic of debate, the position that skeletal health is compromised with obesity has received support in the pediatric and adult literature. The limited data relating specifically to trabecular bone microarchitecture, however, have been relatively inconsistent. The aim of this pilot cross-sectional case-control study was to compare trabecular bone microarchitecture between obese (OB) and normal-weight (NW) late-adolescent females. A secondary aim was to compare diaphyseal cortical bone outcomes between these two groups...
July 14, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28707153/medium-chain-enriched-diacylglycerol-mce-dag-oil-decreases-body-fat-mass-in-mice-by-increasing-lipolysis-and-thermogenesis-in-adipose-tissue
#8
Haeun Kim, Jee-Hwan Choe, Jong Hun Choi, Hun Jung Kim, Soo Hyun Park, Moon Won Lee, Wooki Kim, Gwang-Woong Go
Medium chain fatty acid (MCFA) escapes the formation of chylomicrons in the small intestine, resulting in energy expenditure through beta-oxidation. Diacylglycerol (DAG) is susceptible to oxidation rather than being stored in the adipose tissue. This study was conducted to verify the effect of MCE-DAG oil on body fat mass in vivo. Male C57BL/6 mice were randomly assigned to four groups (n = 12) as follows: (1) normal diet (18% kcal from fat), (2) canola oil as a control (40% kcal from canola oil), (3) MCE-DAG10 (10% kcal from MCE-DAG + 30% kcal from canola oil), and (4) MCE-DAG20 (20% kcal from MCE-DAG + 20% kcal from canola oil)...
July 13, 2017: Lipids
https://www.readbyqxmd.com/read/28706492/lower-expression-of-slc27a1-enhances-intramuscular-fat-deposition-in-chicken-via-down-regulated-fatty-acid-oxidation-mediated-by-cpt1a
#9
Fengfang Qiu, Liang Xie, Jing-E Ma, Wen Luo, Li Zhang, Zhe Chao, Shaohao Chen, Qinghua Nie, Zhemin Lin, Xiquan Zhang
Intramuscular fat (IMF) is recognized as the predominant factor affecting meat quality due to its positive correlation with tenderness, juiciness, and flavor. Chicken IMF deposition depends on the balance among lipid synthesis, transport, uptake, and subsequent metabolism, involving a lot of genes and pathways, however, its precise molecular mechanisms remain poorly understood. In the present study, the breast muscle tissue of female Wenchang chickens (WC) (higher IMF content, 1.24 in D120 and 1.62 in D180) and female White Recessive Rock chickens (WRR; lower IMF content, 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28705473/deal-or-no-deal-the-prevalence-and-nutritional-quality-of-price-promotions-among-u-s-food-and-beverage-purchases
#10
Lindsey Smith Taillie, Shu Wen Ng, Ya Xue, Matthew Harding
OBJECTIVE: This study examines trends in the prevalence of price promotions among packaged food and beverage purchases, differences in prevalence by household race/ethnicity or income, and the association between price promotions and the nutritional profile of purchases. DESIGN: This cross-sectional study utilizes a dataset of 90 million purchases from 38,744 (2008) to 45,042 (2012) US households in 2008-2012. Chi-square tests were used to examine whether the proportion of purchases with price promotions changed over time or differed by household race/ethnicity or income...
July 10, 2017: Appetite
https://www.readbyqxmd.com/read/28704996/imidacloprid-promotes-high-fat-diet-induced-adiposity-in-female-c57bl-6j-mice-and-enhance-adipogenesis-in-3t3-l1-adipocytes-via-ampk%C3%AE-mediated-pathway
#11
Quancai Sun, Weipeng Qi, Xiao Xiao, Szu-Hao Yang, Daeyoung Kim, Kyong-Sup Yoon, John M Clark, Yeonhwa Park
Imidacloprid, a neonicotinoid insecticide, has been reported to enhance adipogenesis and resulted in insulin resistance in vitro. It was also reported to promote high fat diet-induced obesity and insulin resistance in male C57BL/6J mice. The current study was to determine the effects of imidacloprid and its interaction with dietary fat in the development of adiposity and insulin resistance in female C57BL/6J mice. Mice were fed with imidacloprid (0.06, 0.6, or 6 mg/kg bw/day) mixed in low fat (4% w/w) or high fat (20% w/w) diet for 12 weeks...
July 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28704429/effects-of-coconut-oil-on-glycemia-inflammation-and-urogenital-microbial-parameters-in-female-ossabaw-mini-pigs
#12
Annie E Newell-Fugate, Katherine Lenz, Cassandra Skenandore, Romana A Nowak, Bryan A White, Andrea Braundmeier-Fleming
Forty percent of American women are obese and at risk for type II diabetes, impaired immune function, and altered microbiome diversity, thus impacting overall health. We investigated whether obesity induced by an excess calorie, high fat diet containing hydrogenated fats, fructose, and coconut oil (HFD) altered glucose homeostasis, peripheral immunity, and urogenital microbial dynamics. We hypothesized that HFD would cause hyperglycemia, increase peripheral inflammation, and alter urogenital microbiota to favor bacterial taxonomy associated with inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28704419/a-pilot-feeding-study-for-adults-with-asthma-the-healthy-eating-better-breathing-trial
#13
Emily P Brigham, Elizabeth C Matsui, Lawrence J Appel, Deborah A Bull, Jean Curtin-Brosnan, Shuyan Zhai, Karen White, Jeanne B Charleston, Nadia N Hansel, Gregory B Diette, Meredith C McCormack
RATIONALE: Evidence from observational studies and to a lesser extent clinical trials suggest that a healthy diet may improve symptoms and lung function in patients with asthma. We conducted a pilot study to determine the feasibility of conducting a larger scale dietary trial and to provide preliminary evidence on the impact of a healthy diet on asthma outcomes. METHODS: In a randomized, two period cross-over trial, participants with asthma received a 4-week dietary intervention followed by a usual diet (or vice versa), separated by a 4-week washout...
2017: PloS One
https://www.readbyqxmd.com/read/28703955/yield-of-acid-curd-cheese-produced-from-cow-s-milk-from-different-lactation-periods
#14
Ewa Salamończyk, Krzysztof Młynek, Piotr Guliński, Wiesława Zawadzka
BACKGROUND: Milk production intensification has led in many countries, including Poland, to increased milk yields per cow. A higher milk yield resulted in changes in cow productivity, including extended lactations. There is a paucity of information on the quality of milk harvested during the last months of lactations exceed- ing 10 months. Production capacity cheese (“cheese expenditure”) is an important parameter of providing   a recovery as much as the possible components of the milk processed are dry substances, which in turn af- fects the economics of production...
April 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28702330/neonatal-glp1r-activation-limits-adult-adiposity-by-durably-altering-hypothalamic-architecture
#15
Andrea V Rozo, Daniella A Babu, PoMan A Suen, David N Groff, Randy J Seeley, Rebecca A Simmons, Patrick Seale, Rexford S Ahima, Doris A Stoffers
OBJECTIVE: Adult obesity risk is influenced by alterations to fetal and neonatal environments. Modifying neonatal gut or neurohormone signaling pathways can have negative metabolic consequences in adulthood. Here we characterize the effect of neonatal activation of glucagon like peptide-1 (GLP-1) receptor (GLP1R) signaling on adult adiposity and metabolism. METHODS: Wild type C57BL/6 mice were injected with 1 nmol/kg Exendin-4 (Ex-4), a GLP1R agonist, for 6 consecutive days after birth...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28701693/transcription-factor-hlx-controls-a-systematic-switch-from-white-to-brown-fat-through-prdm16-mediated-co-activation
#16
Lei Huang, Dongning Pan, Qingbo Chen, Lihua J Zhu, Jianhong Ou, Martin Wabitsch, Yong-Xu Wang
Browning of subcutaneous white fat (iWAT) involves several reprograming events, but the underlying mechanisms are incompletely understood. Here we show that the transcription factor Hlx is selectively expressed in brown adipose tissue (BAT) and iWAT, and is translationally upregulated by β3-adrenergic signaling-mediated suppression of the translational inhibitor 4E-BP1. Hlx interacts with and is co-activated by Prdm16 to control BAT-selective gene expression and mitochondrial biogenesis. Hlx heterozygous knockout mice have defects in brown-like adipocyte formation in iWAT, and develop glucose intolerance and high fat-induced hepatic steatosis...
July 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28699236/piperonal-attenuates-visceral-adiposity-in-mice-fed-a-high-fat-diet-potential-involvement-of-the-adenylate-cyclase-protein-kinase-a-dependent-pathway
#17
Songyi Chu, Vikram P Narayan, Mi-Kyung Sung, Taesun Park
SCOPE: Piperonal is an aromatic compound found in vanilla and has a floral odor resembling vanillin. This study was aimed to test whether piperonal attenuates visceral adiposity induced by a high-fat diet (HFD) in mice and to explore the underlying molecular mechanisms. METHODS AND RESULTS: Male C57BL/6N mice were fed a normal diet, HFD, or 0.05% piperonal-supplemented HFD (PSD) for 10 weeks. PSD-fed mice showed attenuation of body weight gain, total visceral fat pad weights, and plasma lipid levels compared to HFD-fed mice...
July 12, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28699087/effects-of-endurance-training-on-autophagy-and-apoptotic-signaling-in-visceral-adipose-tissue-of-prolonged-high-fat-diet-fed-rats
#18
Sílvia Rocha-Rodrigues, Inês O Gonçalves, Jorge Beleza, António Ascensão, José Magalhães
PURPOSE: Autophagy and apoptosis play critical roles in both development and tissue homeostasis in response to (patho)physiological stimuli, such as high-fat diet (HFD) and endurance training (ET). Therefore, we aimed to investigate how ET modulates autophagy and apoptotic-related signaling in visceral adipose tissue of long-standing HFD-fed rats. METHODS: The study was conducted over a 17-week period on Sprague-Dawley rats, which were divided into four groups (n = 8/group): standard diet sedentary (STD+SED), high-fat diet sedentary (HFD+SED), standard diet ET (STD+ET) and high-fat diet ET (HFD+ET)...
July 11, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28696026/a-genome-wide-association-study-for-a-proxy-of-intermuscular-fat-level-in-the-italian-large-white-breed-identifies-genomic-regions-affecting-an-important-quality-parameter-for-dry-cured-hams
#19
L Fontanesi, G Schiavo, G Galimberti, S Bovo, V Russo, M Gallo, L Buttazzoni
Intermuscular fat content in protected designations of origin dry-cured hams is a very important meat quality trait that affects the acceptability of the product by the consumers. An excess in intermuscular fat (defined as the level of fat deposition between leg muscles) is a defect that depreciates the final product. In this study we carried out a genome-wide association study for visible intermuscular fat (VIF) of hams in the Italian Large White pig breed. This trait was evaluated on the exposed muscles of green legs in 1122 performance-tested gilts by trained personnel, according to a classification scale useful for routine and cheap evaluation...
August 2017: Animal Genetics
https://www.readbyqxmd.com/read/28694301/helminth-antigens-counteract-a-rapid-high-fat-diet-induced-decrease-in-adipose-tissue-eosinophils
#20
Susan M van den Berg, Andrea D van Dam, Pascal J Kusters, Linda Beckers, Myrthe den Toom, Saskia van der Velden, Jan Van den Bossche, Irma van Die, Mariëtte R Boon, Patrick C N Rensen, Esther Lutgens, Menno P de Winther
Brown adipose tissue (BAT) activation and white adipose tissue (WAT) beiging can increase energy expenditure and have the potential to reduce obesity and associated diseases. The immune system is a potential target in mediating brown and beige adipocyte activation. Type 2 and anti-inflammatory immune cells contribute to metabolic homeostasis within lean WAT, with a prominent role for eosinophils and interleukin (IL)-4 induced anti-inflammatory macrophages. We determined eosinophil numbers in epididymal WAT (EpAT), subcutaneous WAT (ScAT) and BAT after 1 day, 3 days or 1 week of high-fat diet (HFD) feeding in C57Bl/6 mice...
July 10, 2017: Journal of Molecular Endocrinology
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