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https://www.readbyqxmd.com/read/27933755/maternal-pre-pregnancy-bmi-downregulates-neonatal-cord-blood-lep-methylation
#1
R Kadakia, Y Zheng, Z Zhang, W Zhang, L Hou, J L Josefson
BACKGROUND: Neonatal adiposity has many determinants and may be a risk factor for future obesity. Epigenetic regulation of metabolically important genes is a potential contributor. OBJECTIVES: The objective of the study is to determine whether methylation changes in the LEP gene in cord blood DNA are impacted by the maternal environment or affect neonatal adiposity measures. METHODS: A cross-sectional study of 114 full-term neonates born to healthy mothers with normal glucose tolerance was performed...
December 8, 2016: Pediatric Obesity
https://www.readbyqxmd.com/read/27933671/causal-inference-in-obesity-research
#2
REVIEW
P W Franks, N Atabaki-Pasdar
Obesity is a risk factor for a plethora of severe morbidities and premature death. Most supporting evidence comes from observational studies that are prone to chance, bias and confounding. Even data on the protective effects of weight loss from randomized controlled trials will be susceptible to confounding and bias if treatment assignment cannot be masked, which is usually the case with lifestyle and surgical interventions. Thus, whilst obesity is widely considered the major modifiable risk factor for many chronic diseases, its causes and consequences are often difficult to determine...
December 8, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27933540/systems-genetics-of-obesity
#3
Gudrun A Brockmann, Danny Arends, Sebastian Heise, Ayca Dogan
Obesity is a complex trait, determined by many genes and influenced by environmental factors. Mapping genomic loci contributing to obesity helps to identify gene variants responsible for differences in the phenotype. However, measuring fat content alone is often not sufficient to identify the underlying gene or genes. Besides in-depth phenotyping, well-designed genetic populations and the combined analysis of data of different origins are necessary to detect one of several genetic determinants. Structured mouse populations and linking information from different experiments help to simplify the complexity in the search for direct genetic effects or factors that are hidden in the genome...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933229/mid-term-shoulder-functional-and-quality-of-life-outcomes-after-shoulder-replacement-in-obese-patients
#4
Heather K Vincent, Aimee M Struk, Austin Reed, Thomas W Wright
BACKGROUND: Shoulder pain and loss of function are directly associated with obesity. QUESTIONS/PURPOSES: We hypothesized that significant interactions would exist between total shoulder arthroplasty (TSA) and reverse total shoulder arthroplasty (RSA) and obesity status on functional and quality of life (QOL) outcomes over the long term. Clinical and QOL outcomes (American Shoulder and Elbow Surgeons Evaluation form, Shoulder Pain and Disability Index, University of California at Los Angeles Shoulder Rating scale, Medical Outcomes Short Form 12 (SF-12), range of motion (ROM), and strength) were longitudinally compared in patients with low and high body mass index (BMI) after a TSA or a RSA...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933062/no-role-for-mast-cells-in-obesity-related-metabolic-dysregulation
#5
Jindřich Chmelař, Antonios Chatzigeorgiou, Kyoung-Jin Chung, Marta Prucnal, David Voehringer, Axel Roers, Triantafyllos Chavakis
Obesity-related adipose tissue (AT) inflammation that promotes metabolic dysregulation is associated with increased AT mast cell numbers. Mast cells are potent inducers of inflammatory responses and could potentially contribute to obesity-induced AT inflammation and metabolic dysregulation. Conflicting findings were reported on obesity-related metabolic dysfunction in mast cell-deficient mice, thus creating a controversy that has not been resolved to date. Whereas traditional Kit hypomorphic mast cell-deficient strains featured reduced diet-induced obesity and diabetes, a Kit-independent model of mast cell deficiency, Cpa3(Cre/+) mice, displayed no alterations in obesity and insulin sensitivity...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27932989/hypoxic-living-and-exercise-training-alter-adipose-tissue-leptin-leptin-receptor-in-rats
#6
Yingli Lu, Lianshi Feng, Minhao Xie, Li Zhang, Jianfang Xu, Zihong He, Tongjian You
Background: Hypobaric hypoxia results in weight loss in obese individuals, and exercise training is advocated for the treatment of obesity and its related metabolic dysfunctions. The purpose of this study was to investigate the effects of hypoxic living and exercise training on obesity and adipose tissue leptin/leptin receptor in dietary-induced obese rats. Methods: One hundred and thirty high-fat diet fed Sprague-Dawley rats were assigned into one of the following groups (n = 10 each): control, sedentary hypoxic living for 1-4 weeks (SH1, SH2, SH3, and SH4), living, and exercise training in normoxic conditions for 1-4 weeks (TN1, TN2, TN3, and TN4), and living and exercise training in hypoxic conditions for 1-4 weeks (TN1, TN2, TN3, and TN4)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27932592/the-role-of-adipose-tissue-in-cancer-associated-cachexia
#7
Janina A Vaitkus, Francesco S Celi
Adipose tissue (fat) is a heterogeneous organ, both in function and histology, distributed throughout the body. White adipose tissue, responsible for energy storage and more recently found to have endocrine and inflammation-modulatory activities, was historically thought to be the only type of fat present in adult humans. The recent demonstration of functional brown adipose tissue in adults, which is highly metabolic, shifted this paradigm. Additionally, recent studies demonstrate the ability of white adipose tissue to be induced toward the brown adipose phenotype - "beige" or "brite" adipose tissue - in a process referred to as "browning...
December 8, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27930914/a-high-fat-diet-induced-decrease-in-hippocampal-newly-born-neurons-of-male-mice-is-exacerbated-by-mild-psychological-stress-using-a-communication-box
#8
Yusuke Murata, Yukiyasu Narisawa, Rima Shimono, Hiraku Ohmori, Masayoshi Mori, Kenji Ohe, Kazunori Mine, Munechika Enjoji
BACKGROUND: Obese persons have a higher incidence of depression than healthy-weight persons. Several studies indicated that the exposure to a high fat diet (HFD) results in a decrease in hippocampal neurogenesis, which leads to higher stress response and stress-induced depression. Although stress is a risk factor for obesity and depression, no studies to date have investigated the effect of stress on the hippocampal neurogenesis of HFD-induced obese animals. The aim of this study was to elucidate whether or not obese HFD-fed mice are vulnerable to stress-induced depression by investigating hippocampal neurogenesis...
November 30, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27930804/increased-mitochondrial-ros-generation-mediates-the-loss-of-pvat-anticontractile-effect-in-hfd-treated-obese-mice
#9
Rafael Menezes da Costa, Rafael S Fais, Carlos R P Dechandt, Paulo Louzada-Junior, Luciane C Alberici, Núbia S Lobato, Rita C Tostes
Obesity is associated with structural and functional changes in the perivascular adipose tissue (PVAT), favoring the release of reactive oxygen species (ROS), vasoconstrictor and proinflammatory factors. Tumor necrosis factor alpha (TNF-α) induces vascular dysfunction and is produced by the PVAT. We tested the hypothesis that obesity-associated PVAT dysfunction is mediated by augmented mitochondrial ROS (mROS) generation due to increased TNF-α production in this tissue. Aortae from high fat diet (HFD)-fed obese mice displayed increased contractions to phenylephrine (PE) and loss of PVAT anticontractile effect...
December 8, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27930696/risk-factors-for-incidence-of-cardiovascular-diseases-and-all-cause-mortality-in-a-middle-eastern-population-over-a-decade-follow-up-tehran-lipid-and-glucose-study
#10
Mahsa Sardarinia, Samaneh Akbarpour, Mojtaba Lotfaliany, Farideh Bagherzadeh-Khiabani, Mohammadreza Bozorgmanesh, Farhad Sheikholeslami, Fereidoun Azizi, Farzad Hadaegh
BACKGROUND: To examine the association between potentially modifiable risk factors with cardiovascular disease (CVD) and all-cause mortality and to quantify their population attributable fractions (PAFs) among a sample of Tehran residents. METHODS: Overall, 8108 participants (3686 men) aged≥30 years, were investigated. To examine the association between risk factors and outcomes, multivariate sex-adjusted Cox proportional hazard regression analysis were conducted, using age as time-scale in two models including general/central adiposity: 1)adjusted for different independent variables including smoking, education, family history of CVD and sex for both outcomes and additionally adjusted for prevalent CVD for all-cause mortality 2)further adjusted for obesity mediators (hypertension, diabetes, lipid profile and chronic kidney disease)...
2016: PloS One
https://www.readbyqxmd.com/read/27929200/obesity-insulin-resistance-rather-than-liver-fat-increases-coagulation-factor-activities-and-expression-in-humans
#11
Susanna Lallukka, Panu K Luukkonen, You Zhou, Elina M Petäjä, Marja Leivonen, Anne Juuti, Antti Hakkarainen, Marju Orho-Melander, Nina Lundbom, Vesa M Olkkonen, Riitta Lassila, Hannele Yki-Järvinen
Increased liver fat may be caused by insulin resistance and adipose tissue inflammation or by the common I148M variant in PNPLA3 at rs738409, which lacks both of these features. We hypothesised that obesity/insulin resistance rather than liver fat increases circulating coagulation factor activities. We measured plasma prothrombin time (PT, Owren method), activated partial thromboplastin time (APTT), activities of several coagulation factors, VWF:RCo and fibrinogen, and D-dimer concentration in 92 subjects divided into groups based on insulin sensitivity [insulin-resistant ('IR') versus insulin-sensitive ('IS')] and PNPLA3 genotype (PNPLA3(148MM/MI) vs PNPLA3(148II))...
December 8, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27929048/serum-amyloid-a3-gene-expression-in-adipocytes-is-an-indicator-of-the-interaction-with-macrophages
#12
Yohei Sanada, Takafumi Yamamoto, Rika Satake, Akiko Yamashita, Sumire Kanai, Norihisa Kato, Fons Aj van de Loo, Fusanori Nishimura, Philipp E Scherer, Noriyuki Yanaka
The infiltration of macrophages into adipose tissue and their interaction with adipocytes are essential for the chronic low-grade inflammation of obese adipose tissue. In this study, we identified the serum amyloid A3 (Saa3) gene as a key adipocyte-derived factor that is affected by interaction with macrophages. We showed that the Saa3 promoter in adipocytes actually responds to activated macrophages in a co-culture system. Decreasing C/EBPβ abundance in 3T3-L1 adipocytes or point mutation of C/EBPβ elements suppressed the increased promoter activity in response to activated macrophages, suggesting an essential role of C/EBPβ in Saa3 promoter activation...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27927722/age-dependent-control-of-energy-homeostasis-by-brown-adipose-tissue-in-progeny-subjected-to-maternal-diet-induced-fetal-programming
#13
Olivier Dumortier, Estelle Roger, Didier F Pisani, Virginie Casamento, Nadine Gautier, Patricia Lebrun, Hereroa Johnston, Pascal Lopez, Ez-Zoubir Amri, Céline Jousse, Pierre Fafournoux, Marc Prentki, Charlotte Hinault, Emmanuel Van Obberghen
Epidemiological and animal studies show that deleterious maternal environments predispose aging offspring to metabolic disorders and type 2 diabetes. Young progeny in a rat model of maternal low protein diet (LP) is normoglycemic despite collapsed insulin secretion. However, without further worsening of the insulin secretion defect glucose homeostasis deteriorates in aging LP descendants. Here we report that normoglycemic and insulinopenic 3-month-old LP progeny shows increased body temperature and energy dissipation in association with enhanced brown adipose tissue (BAT) activity...
December 7, 2016: Diabetes
https://www.readbyqxmd.com/read/27927275/energy-balance-related-behaviors-are-related-to-cardiometabolic-parameters-and-predict-adiposity-in-8-14-year-old-overweight-chinese-children-one-year-later
#14
Liu Bai Li, Nan Wang, Xu Long Wu, Ling Wang, Jing Jing Li, Miao Yang, Jun Ma
To identify target energy balance-related behaviors (ERBs), baseline data from 141 overweight or obese schoolchildren (aged 8-14 years old) was used to predict adiposity [body mass index (BMI) and fat percentage] one year later. The ERBs included a modified Dietary Approach to Stop Hypertension diet score (DASH score), leisure-time physical activity (PA, days/week), and leisure screen time (minutes/day). Several cardiometabolic variables were measured in the fasting state, including systolic blood pressure (SBP), diastolic blood pressure (DBP), blood glucose (GLU), total cholesterol (TC), triglycerides (TG), low-density lipoprotein (LDL-C), and high-density lipoprotein (HDL-C)...
October 2016: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/27925657/population-pharmacokinetics-of-cefazolin-in-serum-and-adipose-tissue-from-overweight-and-obese-women-undergoing-cesarean-delivery
#15
Mordechai Grupper, Joseph L Kuti, Morgan L Swank, Lindsay Maggio, Brenna L Hughes, David P Nicolau
The optimal antibiotic prophylaxis dosing regimen of cefazolin for cesarean delivery (CD) in overweight and obese women is unknown. This study was done to compare the duration that cefazolin concentrations remain above the minimum inhibitory concentration (MIC) in adipose tissue (AT). Serum and AT concentrations from 3 previous studies in CD patients were comodeled using the nonparametric adaptive grid algorithm in Pmetrics. AT concentrations for 5000 overweight and obese patients receiving 1-, 2-, and 3-g cefazolin regimens were simulated to calculate the probability that free drug concentrations remained above an MIC of 2 μg/mL at 1, 1...
December 7, 2016: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27925445/relationship-between-obesity-and-anti-m%C3%A3-llerian-hormone-in-reproductive-aged-african-american-women
#16
Lia A Bernardi, Mercedes R Carnethon, Peter J de Chavez, Deborah E Ikhena, Lisa M Neff, Donna D Baird, Erica E Marsh
OBJECTIVE: To determine whether there is an association between obesity and anti-Müllerian hormone (AMH) among reproductive-aged African American women (AAW). METHODS: From the women participating in an ongoing National Institute of Environmental Health Sciences study, 1,654 AAW aged 23 to 35 were included in this study. Anthropometric measurements, personal health information, and serum AMH and adipokine levels were analyzed. RESULTS: The median body mass index (BMI) was 32...
December 7, 2016: Obesity
https://www.readbyqxmd.com/read/27925245/helminths-hygiene-hypothesis-and-type-2-diabetes
#17
Karin de Ruiter, Dicky L Tahapary, Erliyani Sartono, Pradana Soewondo, Taniawati Supali, Johannes W A Smit, Maria Yazdanbakhsh
Worldwide, there is little overlap between the prevalence of soil-transmitted helminths and type 2 diabetes (T2D). Helminth-induced type 2 immune responses and immune regulatory network might modulate the obesity-induced activation of inflammatory pathways that are associated with the development of insulin resistance, a strong predictor of the development of T2D. However, other factors such as helminth-associated changes in adiposity and gut microbiome might also contribute to improved metabolic outcomes. In this review we summarize epidemiological evidence for the link between helminths and T2D and discuss the potential mechanisms, based on findings from experimental studies as well as the limited number of studies in humans...
December 7, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27925195/palmitoleic-acid-improves-metabolic-functions-in-fatty-liver-by-ppar%C3%AE-dependent-ampk-activation
#18
Camila O Souza, Alexandre A S Teixeira, Luana A Biondo, Edson A Lima, Helena A P Batatinha, Jose C Rosa Neto
BACKGROUND: Palmitoleic acid, since described as lipokine, increases glucose uptake by modulation of 5'AMP-activated protein kinase (AMPK), as well as increasing lipolysis by activation of peroxisome proliferator-activated receptor-α (PPARα), in adipose tissue. However in liver, the effects of palmitoleic acid on glucose metabolism and the role of PPARα remain unknown. OBJECTIVE: To investigate whether palmitoleic acid improved the hepatic insulin sensitivity of obese mice...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27925193/systemic-and-local-adipose-tissue-in-knee-osteoarthritis
#19
REVIEW
Elisa Belluzzi, Hamza El Hadi, Marnie Granzotto, Marco Rossato, Roberta Ramonda, Veronica Macchi, Raffaele De Caro, Roberto Vettor, Marta Favero
Osteoarthritis is a common chronic joint disorder affecting older people. The knee is the major joint affected. The symptoms of osteoarthritis include limited range of motion, joint swelling, and pain causing disability. There are no disease modifying drugs available, and treatments are mainly focused on pain management. Total knee replacement performed at the end stage of the disease is considered the only cure available. It has been found that obese people have an increased risk to develop not only knee but also hand osteoarthritis...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27922125/an-er%C3%AE-agonist-induces-browning-of-subcutaneous-abdominal-fat-pad-in-obese-female-mice
#20
Yi-Fei Miao, Wen Su, Yu-Bing Dai, Wan-Fu Wu, Bo Huang, Rodrigo P A Barros, Hao Nguyen, Laure Maneix, You-Fei Guan, Margaret Warner, Jan-Åke Gustafsson
Estrogen, via estrogen receptor alpha (ERα), exerts several beneficial effects on metabolism and energy homeostasis by controlling size, enzymatic activity and hormonal content of adipose tissue. The actions of estrogen on sympathetic ganglia, which are key players in the browning process, are less well known. In the present study we show that ERβ influences browning of subcutaneous adipose tissue (SAT) via its actions both on sympathetic ganglia and on the SAT itself. A 3-day-treatment with a selective ERβ agonist, LY3201, induced browning of SAT in 1-year-old obese WT and ERα(-/-) female mice...
December 6, 2016: Scientific Reports
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