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International Journal of Obesity: Journal of the International Association for the Study of Obesity

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https://www.readbyqxmd.com/read/28104918/triglycerides-glucose-index-is-a-useful-surrogate-marker-of-insulin-resistance-among-adolescents
#1
B Kang, Y Yang, E Y Lee, H K Yang, H-S Kim, S-Y Lim, J-H Lee, S-S Lee, B-K Suh, K-H Yoon
OBJECTIVES: Our aim was to investigate the association between the triglycerides/glucose index (TyG index) and the homeostasis model assessment-estimated insulin resistance (HOMA-IR) in the prediction of insulin resistance (IR) among adolescents. METHODS: We conducted a cross-sectional study among 221 Korean adolescents (168 males and 53 females aged 9-13 years) from May to June 2014 in Chung-ju city. The TyG index was calculated as ln [triglycerides (mg/dl) × fasting glucose (mg/dl)/2]...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28104917/overexpression-of-bone-morphogenetic-protein-3b-bmp-3b-in-adipose-tissues-protects-against-high-fat-diet-induced-obesity
#2
J Hino, M Nakatani, Y Arai, K Tsuchida, M Shirai, M Miyazato, K Kangawa
BACKGROUND: Bone morphogenetic protein-3b (BMP-3b) is a member of the transforming growth factor-β superfamily and has several activities that differ from those of other BMPs. We previously found that BMP-3b is highly expressed in adipocytes, its level is increased during obesity, and it inhibits adipogenesis by suppressing peroxisome proliferator-activated receptor γ (PPARγ) in vitro. However, the function of BMP-3b in adipose tissues in vivo remains unknown. METHODS: To determine the role of BMP-3b overexpression in adipose tissues in vivo, we generated transgenic mice (BMP-3b Tg) by using a conditional overexpression approach in fatty acid binding protein 4 (FABP4)-expressing adipocytes...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28104916/trpv1-activation-counters-diet-induced-obesity-through-sirtuin-1-activation-and-prdm-16-deacetylation-in-brown-adipose-tissue
#3
P Baskaran, V Krishnan, K Fettel, P Gao, Z Zhu, J Ren, B Thyagarajan
BACKGROUND/OBJECTIVE: An imbalance between energy intake and expenditure leads to obesity. Increasing metabolism and thermogenesis in brown adipose tissue (BAT) can help in overcoming obesity. Here, we investigated the effect of activation of transient receptor potential vanilloid subfamily 1 (TRPV1) in the upregulation of thermogenic proteins in BAT to counter diet-induced obesity. SUBJECTS/METHODS: We investigated the effect of dietary supplementation of capsaicin (TRPV1 agonist) on the expression of metabolically important thermogenic proteins in BAT of wild type and TRPV1(-/-) mice that received either a normal chow or high fat (±capsaicin; TRPV1 activator) diet by immunoblotting...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28104915/visceral-obesity-is-associated-with-white-matter-hyperintensity-and-lacunar-infarct
#4
K W Kim, H Seo, M-S Kwak, D Kim
BACKGROUND: The presences of white matter hyperintensity (WMH) and lacunar infarct are recognized as risk factors of dementia, stroke, and mortality. It is undetermined whether visceral adipose tissue (VAT) area is associated with an increased risk of cerebral small vessel disease. We explored whether VAT area was responsible for cerebral small vessel disease through the identification of WMH and lacunar infarct. SUBJECTS: A total of 2046 subjects free of cerebrovascular disease who underwent brain magnetic resonance imaging (MRI) and abdominal fat computed tomography (CT) during a general health check-up were enrolled...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28100915/whole-exome-sequencing-study-reveals-common-copy-number-variants-in-protocadherin-genes-associated-with-childhood-obesity-in-koreans
#5
S Moon, M Y Hwang, H B Jang, S Han, Y J Kim, J-Y Hwang, H-J Lee, S I Park, J Song, B-J Kim
Recently, the prevalence of childhood obesity has significantly increased in industrialized countries, including Korea, and now controlling obesity is becoming an economic burden. However, knowledge of the risk factors associated with obesity is still limited. In this study, we aimed to discover additional obesity-associated loci in children. To achieve this, we conducted an exome-wide association analysis of copy number variation (CNV) using whole-exome sequencing (WES) data from a total of 102 cases and 86 controls...
January 19, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28100914/tet-mediated-hydroxymethylcytosine-at-the-ppar%C3%AE-locus-is-required-for-initiation-of-adipogenic-differentiation
#6
Y Yoo, J H Park, C Weigel, D B Liesenfeld, D Weichenhan, C Plass, D-G Seo, A M Lindroth, Y J Park
BACKGROUND/OBJECTIVES: Adipose tissue is one of the main organs regulating energy homeostasis, via energy storage as well as endocrine function. The adipocyte cell number is largely determined by adipogenesis. While the molecular mechanism of adipogenesis has been extensively studied, its role in dynamic DNA methylation plasticity remains unclear. Recently, it has been shown that Tet methylcytosine dioxygenase (TET) are catalytically capable of oxidizing DNA 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC) towards a complete removal of the methylated cytosine...
January 19, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28096530/associations-between-body-mass-index-related-genetic-variants-and-adult-body-composition-the-fenland-cohort-study
#7
E A D Clifton, F R Day, E De Lucia Rolfe, N G Forouhi, S Brage, S J Griffin, N J Wareham, K K Ong
BACKGROUND/OBJECTIVE: Body mass index (BMI) is a surrogate measure of adiposity but does not distinguish fat from lean or bone mass. The genetic determinants of BMI are thought to predominantly influence adiposity but this has not been confirmed. Here we characterise the association between BMI-related genetic variants and body composition in adults. SUBJECTS/METHODS: Among 9667 adults aged 29-64 years from the Fenland study, a genetic risk score for BMI (BMI-GRS) was calculated for each individual as the weighted sum of BMI-increasing alleles across 96 reported BMI-related variants...
January 18, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28093573/impact-of-lifestyle-intervention-for-obese-women-during-pregnancy-on-maternal-metabolic-and-inflammatory-markers
#8
K M Renault, E M Carlsen, S Hædersdal, L Nilas, N J Secher, J Eugen-Olsen, D Cortes, S F Olsen, T I Halldorsson, K Nørgaard
BACKGROUND: Offspring of obese mothers have increased risk of developing obesity and related short and long-term disease. The cause is multifactorial and may partly be explained by the unfavorable intrauterine environment. Intervention during pregnancy leading to a healthier lifestyle among obese may alter this. OBJECTIVE: To assess the effect of lifestyle intervention on markers of maternal metabolism and inflammation in 'the TOP (Treatment of Obese Pregnant Women)-study', a randomized controlled trial...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28093572/longitudinal-changes-in-body-mass-index-of-children-affected-by-the-great-east-japan-earthquake
#9
W Zheng, H Yokomichi, H Matsubara, M Ishikuro, M Kikuya, T Isojima, S Yokoya, T Tanaka, N Kato, S Chida, A Ono, M Hosoya, S Tanaka, S Kuriyama, S Kure, Z Yamagata
BACKGROUND: The evacuation and disruption in housing caused by the 2011 Great East Japan Earthquake and following nuclear radiation may have influenced child health in many respects. However, studies regarding longitudinal childhood growth are limited. Therefore, in this study we aimed to explore the influence of the earthquake on longitudinal changes in body mass index in preschool children. METHODS: Participants were children from nursery schools that cooperated with the study in the Iwate, Miyagi, and Fukushima Prefectures...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28093571/roux-en-y-gastric-bypass-increases-systemic-but-not-portal-bile-acid-concentrations-by-decreasing-hepatic-bile-acid-uptake-in-minipigs
#10
O Chávez-Talavera, G Baud, V Spinelli, M Daoudi, M Kouach, J-F Goossens, E Vallez, R Caiazzo, M Ghunaim, T Hubert, S Lestavel, A Tailleux, B Staels, F Pattou
Roux-en-Y gastric bypass (RYGB) surgery is widely used in the management of morbid obesity. RYGB improves metabolism independently of weight loss by still unknown mechanisms. Bile acids (BAs) are good candidates to explain this benefit, since they regulate metabolic homeostasis and their systemic concentrations increase upon RYGB. Here we analyzed the mechanisms underlying the increase in systemic BA concentrations after RYGB and the role of the liver therein. To this aim, we used the Göttingen-like minipig, a human-size mammalian model, which allows continuous sampling and simultaneous analysis of pre-hepatic portal and systemic venous blood...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28093570/vitamin-d-administration-cognitive-function-bbb-permeability-and-neuro-inflammatory-factors-in-high-fat-diet-induced-obese-rats
#11
G Hajiluian, G Nameni, P Shahabi, M Mesgari-Abbasi, S Sadigh-Eteghad, M A Farhangi
OBJECTIVES: The purpose of this research is to investigate the effects of vitamin D administration on cognitive function, nuclear factor Kappa-B (NF-kB), brain derived neurotrophic factor (BDNF) concentration in the hippocampus and blood-brain barrier (BBB) permeability in high-fat diet (HFD) induced obese rats. METHODS: Male Wistar rats were fed either a control diet or HFD for 16 weeks (n=20); then each group was randomized into two subgroups supplemented orally with 500 IU/kg vitamin D for 5 weeks...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28077863/what-have-human-experimental-overfeeding-studies-taught-us-about-adipose-tissue-expansion-and-susceptibility-to-obesity-and-metabolic-complications
#12
REVIEW
D J Cuthbertson, T Steele, J P Wilding, J C G Halford, J A Harrold, M Hamer, F Karpe
Overfeeding experiments, in which we impose short-term positive energy balance, help unravel the cellular, physiological and behavioural adaptations to nutrient excess. These studies mimic longer-term mismatched energy expenditure and intake. There is considerable inter-individual heterogeneity in the magnitude of weight gain when exposed to similar relative caloric excess reflecting variable activation of compensatory adaptive mechanisms. Significantly, given similar relative weight gain, individuals may be protected from/predisposed to metabolic complications (insulin resistance, dyslipidaemia, hypertension), non-alcoholic fatty liver disease and cardiovascular disease...
January 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28077862/what-are-the-challenges-in-developing-effective-health-policies-for-obesity
#13
REVIEW
M Binks, S-H Chin
Identifying and implementing thoughtful, evidence based (or at least evidence informed) public health approaches to impacting obesity is a complex issue fraught with multiple challenges. These challenges begin with determining whether obesity policy approaches should be implemented. This is considered within the broader context of how common public health policy approaches may be relevant and applied to obesity. Additional challenges discussed include inconsistencies in clearly identifying obesity policy targets (e...
January 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28077861/economics-and-obesity-policy
#14
REVIEW
J L Lusk
This paper elucidates the challenges surrounding the economics of some popular obesity-related policy proposals. Solid economic justifications for anti-obesity policies are often lacking, and pragmatically evidence suggests policies like fat and soda taxes or restrictions on food stamp spending are unlikely to substantively affect obesity prevalence. In short, many of the same factors that make obesity such a complicated and multifaceted issue extend to the economic analysis public health policies.International Journal of Obesity accepted article preview online, 12 January 2017...
January 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28074059/school-environment-and-policies-child-eating-behavior-and-overweight-obesity-in-urban-china-the-childhood-obesity-study-in-china-mega-cities
#15
P Jia, M Li, H Xue, L Lu, F Xu, Y Wang
OBJECTIVES: Childhood obesity is rising rapidly in China, especially in urban areas. Knowledge about how school environment and policies (SEP) may have contributed to the epidemic remains limited. We examined SEP and their associations with students' eating behaviors and overweight/obesity in urban China. METHODS: Data were collected from 1648 students (plus their parents and schools) in 16 primary and middle schools (4 schools/per city) in four mega-cities across China: Beijing, Shanghai, Nanjing, and Xi'an...
January 11, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28074058/intracellular-atp-in-balance-of-pro-and-anti-inflammatory-cytokines-in-adipose-tissue-with-and-without-tissue-expansion
#16
J H Lee, Y Zhang, Z Zhao, X Ye, X Zhang, H Wang, J Ye
OBJECTIVES: To understand the mechanism of white fat expansion in the presence of inflammation, we examined the balance of pro- and anti-inflammatory cytokines in epididymal fat during weight gain in DIO mice. METHODS: The pro- and anti-inflammatory cytokines were examined in white fat of diet-induced obese mice and lean mice. The mechanism of gene expression was investigated with a focus on intracellular ATP (iATP). ATP activity was tested in cellular and non-cellular systems in activation of serine kinases (IKKβ, JNK and ERK)...
January 11, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27924082/duodenal-endoluminal-barrier-sleeve-alters-gut-microbiota-of-zdf-rats
#17
T Kim, C L Holleman, T Ptacek, C D Morrow, K M Habegger
BACKGROUND/OBJECTIVES: The combination of energy dense diets and reduced energy expenditure in modern society has escalated the prevalence of obesity and obesity-related comorbidities. Among these disease states, type-2 diabetics (T2D) are disproportionately associated with obesity, suggesting a shared etiology. In conjunction with defects in hormonal and inflammatory states, obesity and T2D are also characterized by dysbiosis. METHODS: We have recently described the beneficial effects of duodenal nutrient exclusion, as induced by the duodenal endoluminal sleeve (DES); including body weight loss, prevented fat mass accumulation, and improved glucose tolerance in the ZDF rat, a rodent model of obesity and type-2 diabetes (T2D)...
January 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27867204/a-brief-intervention-for-weight-control-based-on-habit-formation-theory-delivered-through-primary-care-results-from-a-randomised-controlled-trial
#18
R J Beeken, B Leurent, V Vickerstaff, R Wilson, H Croker, S Morris, R Z Omar, I Nazareth, J Wardle
BACKGROUND: Primary care is the 'first port of call' for weight control advice, creating a need for simple, effective interventions that can be delivered without specialist skills. Ten Top Tips (10TT) is a leaflet based on habit-formation theory that could fill this gap. The aim of the current study was to test the hypothesis that 10TT can achieve significantly greater weight loss over 3 months than 'usual care'. METHODS: A two-arm, individually randomised, controlled trial in primary care...
January 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27867201/does-body-mass-index-modify-the-association-between-physical-activity-and-screen-time-with-cardiometabolic-risk-factors-in-adolescents-findings-from-a-country-wide-survey
#19
F V Cureau, U Ekelund, K V Bloch, B D Schaan
BACKGROUND: Moderate and vigorous physical activity (MVPA) and screen time (ST) have been associated with cardiometabolic health in youth. However, previous studies are conflicting whether these associations are independent of each other and it is unknown if they are modified by adiposity. We aimed to examine the independent and joint associations between MVPA and ST with cardiometabolic risk across body mass index (BMI) categories. METHODS: A total of 36 956 Brazilian adolescents (12-17 years) from the Study of Cardiovascular Risks in Adolescents were included...
January 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28028320/protein-intake-and-dietary-glycemic-load-of-4-year-olds-and-association-with-adiposity-and-serum-insulin-at-7-years-of-age-sex-nutrient-and-nutrient-nutrient-interactions
#20
C Durão, A Oliveira, A C Santos, M Severo, A Guerra, H Barros, C Lopes
BACKGROUND/OBJECTIVES: The role of Protein Intake (PI) at preschool age on later adiposity is understudied, and prospective studies also examining Dietary Glycemic Load (GL) are lacking. The current study evaluated the association of PI and GL at 4 years with adiposity and Fasting Serum Insulin (FSI) 3 years later, and examined the possible interaction between PI and GL on these associations, by sex. DESIGN: This prospective study included 1 999 singleton children enrolled in the population-based birth cohort, Generation XXI (Porto-Portugal, 2005-2006)...
December 28, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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