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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/28901330/a-history-of-obesity-leaves-an-inflammatory-fingerprint-in-liver-and-adipose-tissue
#1
I P Fischer, M Irmler, C W Meyer, S J Sachs, F Neff, M H de Angelis, J Beckers, M H Tschöp, S M Hofmann, S Ussar
BACKGROUND/OBJECTIVE: Dieting is a popular yet often ineffective way to lower body weight, as the majority of people regain most of their pre-dieting weights in a relatively short time. The underlying molecular mechanisms driving weight regain and the increased risk for metabolic disease are still incompletely understood. Here we investigate the molecular alterations inherited from a history of obesity. METHODS: In our model, male HFD fed obese C57BL/6J mice, were switched to a low caloric chow diet, resulting in a decline of body weight to that of lean mice...
September 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28895587/a-new-animal-diet-based-on-human-western-diet-is-a-robust-diet-induced-obesity-model-comparison-to-high-fat-and-cafeteria-diets-in-term-of-metabolic-and-gut-microbiota-disruption
#2
R C Bortolin, A R Vargas, J Gasparotto, P R Chaves, C E Schnorr, K da Boit Martinello, A K Silveira, T K Rabelo, D P Gelain, J C F Moreira
BACKGROUND/OBJECTIVE: Obesity is a metabolic disorder that predisposes patients to numerous diseases and has become a major global public-health concern. Animal models of diet-induced obesity (DIO) are frequently used to study obesity, but which DIO model most accurately reflects the pathology of human obesity remains unclear. In this study, we designed a diet based on the human Western diet (WD) and compared it with the cafeteria diet (CAF) and high-fat diet (HFD) in order to evaluate which diet most closely mirrors human obesity...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28895586/maresin-1-mitigates-liver-steatosis-in-ob-ob-and-diet-induced-obese-mice
#3
L M Laiglesia, S Lorente-Cebrián, L Martínez-Fernández, N Sáinz, P L Prieto-Hontoria, M A Burrell, C M Rodríguez-Ortigosa, J A Martínez, M J Moreno-Aliaga
BACKGROUND/OBJECTIVES: The aim of this study was to characterize the effects of Maresin 1 (MaR1) in obesity-related liver steatosis and the mechanisms involved. METHODS: MaR1 effects on fatty liver disease were tested in ob/ob (2-10 μg/kg i.p., 20 days) and in diet-induced obese (DIO) mice (2 μg/kg, i.p., or 50 μg/kg, oral gavage for 10 days), as well as in cultured hepatocytes. RESULTS: In ob/ob mice, MaR1 reduced liver triglycerides (TG) content, fatty acid synthase (FAS) and stearoyl-CoA desaturase-1 protein expression, while increased acetyl-CoA carboxylase (ACC) phosphorylation and LC3II protein expression, in parallel with a drop in p62 levels...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28895585/habitual-sleep-duration-and-sleep-duration-variation-are-independently-associated-with-body-mass-index
#4
X Xu, M P Conomos, O Manor, J E Rohwer, A T Magis, J C Lovejoy
BACKGROUND: Sleep plays a vital role in maintaining homeostasis and promoting health. Previous studies show that shorter sleep duration is associated with elevated body mass index (BMI) and other cardiovascular risk factors. The goal of this study was to investigate the effects of habitual sleep duration and nightly sleep duration variation based on daily device-recorded data on BMI and obesity-related biomarkers. METHOD: 748 individuals (50.6% females, 85.4% European-Americans, average age: 49...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28895584/effects-of-lobeglitazone-a-novel-thiazolidinedione-on-adipose-tissue-remodeling-and-brown-and-beige-adipose-tissue-development-in-db-db-mice
#5
G Kim, Y-H Lee, M R Yun, J-Y Lee, E G Shin, B-W Lee, E S Kang, B-S Cha
BACKGROUND/OBJECTIVES: We investigated the effect of long-term treatment with lobeglitazone, a novel thiazolidinedione-based activator of PPARγ, on adipose tissue (AT), focusing on its effects on insulin resistance in obese db/db mice. METHODS: Seven-week-old male db/db mice were assigned to either a vehicle-treated (n=8) or lobeglitazone-treated (n=8) group. Lobeglitazone (1 mg/kg daily) was injected intraperitoneally for 20 weeks. RESULTS: Lobeglitazone treatment for 20 weeks resulted in a remarkably improved glycemic index, including significantly decreased glucose levels, enhanced insulin sensitivity, and preserved pancreatic beta cells...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883543/pre-treatment-microbial-prevotella-to-bacteroides-ratio-determines-body-fat-loss-success-during-a-6-month-randomized-controlled-diet-intervention
#6
M F Hjorth, H M Roager, T M Larsen, S K Poulsen, T R Licht, M I Bahl, Y Zohar, A Astrup
Based on the abundance of specific bacterial genera, the human gut microbiota can be divided into two relatively stable groups that might play a role in personalized nutrition. We studied these simplified enterotypes as prognostic markers for successful body fat loss on two different diets. A total of 62 participants with increased waist circumference were randomly assigned to receive an ad libitum New Nordic Diet (NND) high in fiber/wholegrain or an Average Danish Diet (ADD) for 26 weeks. Participants were grouped into two discrete enterotypes by their relative abundance of Prevotella spp...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883542/longitudinal-micro-ultrasound-assessment-of-the-ob-ob-mouse-model-evaluation-of-cardiovascular-renal-and-hepatic-parameters
#7
N Di Lascio, C Kusmic, F Stea, F Lenzarini, C Barsanti, A Leloup, F Faita
BACKGROUND/OBJECTIVES: Obesity is reaching epidemic proportions and is associated with increased risk factors for cardiovascular disease (CVD). Leptin-deficient mice (ob/ob) are widely employed to investigate obesity. Aim of this study was to provide a micro-ultrasound (μUS) longitudinal evaluation of the ob/ob mouse model in terms of cardiovascular effects, consequences for renal microcirculation and liver fat accumulation. SUBJECTS/METHODS: Sixteen wild-type (wt) and eleven ob/ob male mice were studied at 8 (T0) and 25 (T1) weeks of age with a μUS system (Vevo2100) and B-mode and Doppler images were acquired...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883541/prenatal-risk-factors-influencing-childhood-bmi-and-overweight-independent-of-birth-weight-and-infancy-bmi-a-path-analysis-within-the-danish-national-birth-cohort
#8
C S Morgen, L Ängquist, J L Baker, A-Mn Andersen, K F Michaelsen, T I A Sørensen
BACKGROUND AND OBJECTIVES: Prenatal risk factors for childhood overweight may operate indirectly through development in body size in early life and/or directly independent hereof. We quantified the effects of maternal and paternal body mass index (BMI), maternal age, socioeconomic position (SEP), parity, gestational weight gain, maternal smoking during pregnancy, caesarean section, birth weight, and BMI at 5 and 12 months on BMI and overweight at 7 and 11 years. METHODS: Family triads with information on maternal, paternal and child BMI at ages 7 (n=29 374) and 11 years (n=18 044) were selected from the Danish National Birth Cohort...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883540/bat-is-independently-affected-by-peripheral-and-central-pathways
#9
J P Kukkonen
International Journal of Obesity accepted article preview online, 08 September 2017. doi:10.1038/ijo.2017.221.
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883539/role-of-adipose-tissue-in-melanoma-cancer-microenvironment-and-progression
#10
E Zoico, E Darra, V Rizzatti, M Tebon, G Franceschetti, G Mazzali, A P Rossi, F Fantin, M Zamboni
BACKGROUND: An epidemiological association between excess weight and increased risk of cancer has been described in melanoma, for which the physiopathological mechanisms are still unknown. The study of tumor microenvironment and of the role of adipocytes in cancer development, progression and metastasis has recently received great interest. However, the role of peritumoral adipocytes has been characterized only in a few types of cancer and in melanoma it still remains to be defined. METHODS: We investigated the interactions between adipocytes and melanoma cells using an in vitro co-culture system...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28883538/shorter-sleep-duration-is-associated-with-higher-energy-intake-and-an-increase-in-bmi-z-score-in-young-children-predisposed-to-overweight
#11
A Rangan, M Zheng, N J Olsen, J F Rohde, B L Heitmann
BACKGROUND: Inadequate sleep has been shown to be a contributor to obesity in both children and adults. Less evidence is available for toddlers and among those with higher obesity risk. The objective of this study was to examine the relationship between sleep patterns and body weight development in a group of young obesity-predisposed children, and to assess whether intakes of energy or macronutrients mediate this relationship. METHODS: Participants included 368 Danish children aged 2-6 years from the Healthy Start Study, a 1...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28871150/intragastric-balloon-as-an-adjunct-to-lifestyle-programme-in-severely-obese-adolescents-impact-on-biomedical-outcomes-and-skeletal-health
#12
P Sachdev, L Reece, M Thomson, A Natarajan, R J Copeland, J K Wales, N P Wright
Intragastric Balloons are a temporary, reversible, and safer option compared to bariatric surgery to promote significant weight loss leading to improved metabolic outcomes. However due to subsequent weight regain, alternative procedures are now preferred in adults. In adolescents, more amenable to lifestyle change, balloons may be an alternative to less reversible procedures. Our aim was to assess the tolerability and efficacy of the intragastric balloon in severely obese adolescents and the impact of associated weight loss on biomedical outcomes (glucose metabolism, blood pressure, lipid profiles) and bone density...
September 5, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852208/assessing-genetic-and-environmental-influences-on-epicardial-and-abdominal-adipose-tissue-quantities-a-classical-twin-study
#13
A L Jermendy, M Kolossvary, Z D Drobni, A D Tarnoki, D L Tarnoki, J Karady, S Voros, H J Lamb, B Merkely, G Jermendy, P Maurovich-Horvat
BACKGROUND/OBJECTIVE: Various adipose tissue compartments play an important role in the development of cardiometabolic diseases. The quantity of different fat compartments is influenced by genetic and environmental factors. The aim of our study was to evaluate the magnitude of genetic and environmental effects on epicardial, subcutaneous and visceral adipose tissue (EAT, SAT and VAT) quantities in a cohort of adult twin pairs. SUBJECTS/METHODS: In this cross-sectional study we investigated adult twins (57 monozygotic [MZ] and 33 dizygotic [DZ] same-gender twin pairs; 180 twin subjects)...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852207/igg-is-elevated-in-obese-white-adipose-tissue-but-does-not-induce-glucose-intolerance-via-fc%C3%AE-receptor-or-complement
#14
A D van Dam, L van Beek, A C M Pronk, S M van den Berg, J Van den Bossche, M P J de Winther, F Koning, C van Kooten, P C N Rensen, M R Boon, J S Verbeek, K W van Dijk, V van Harmelen
BACKGROUND: In obesity, B cells accumulate in white adipose tissue (WAT) and produce IgG, which may contribute to the development of glucose intolerance. IgG signals by binding to Fcγ receptors (FcγR) and by activating the complement system. The aim of our study was to investigate whether activation of FcγR and/or complement C3 mediates the development of high fat diet-induced glucose intolerance. METHODS: We studied mice lacking all four FcγRs (FcγRI/II/III/IV(-/-)), only the inhibitory FcγRIIb (FcγRIIb(-/-)), only the central component of the complement system C3 (C3(-/-)), and mice lacking both FcγRs and C3 (FcγRI/II/III/IV/C3(-/-))...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852206/do-gender-and-ethnic-differences-in-fasting-leptin-in-indians-and-creoles-of-mauritius-persist-beyond-differences-in-adiposity
#15
S Hunma, H Ramuth, J L Miles-Chan, Y Schutz, J-P Montani, N Joonas, A G Dulloo
Recent body composition studies on the island of Mauritius in young adults belonging to the two main ethnicities-Indians (South Asian descent) and Creoles (African/Malagasy descent)-have shown gender-specific ethnic differences in their body mass index (BMI)-Fat% relationships. We investigated here whether potential gender and ethnic differences in blood leptin would persist beyond that explained by differences in body composition. In healthy young adult Mauritian Indians and Creoles (79 men and 80 women; BMI range:15-41 kg/m(2)), we investigated the relationships between fasted serum leptin with BMI, waist circumference (WC), total fat% assessed by deuterium oxide dilution technique and central adiposity (trunk fat%) assessed by abdominal bioimpedance analysis...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852205/probiotics-administration-following-sleeve-gastrectomy-surgery-a-randomized-double-blind-trial
#16
S Sherf-Dagan, S Zelber-Sagi, G Zilberman-Schapira, M Webb, A Buch, A Keidar, A Raziel, N Sakran, D Goitein, N Goldenberg, J A Mahdi, M Pevsner-Fischer, N Zmora, M Dori-Bachash, E Segal, E Elinav, O Shibolet
BACKGROUND: Probiotics are commonly used after bariatric surgery; however uncertainty remains regarding their efficacy. Our aim was to compare the effect of probiotics vs. placebo on hepatic, inflammatory and clinical outcomes following laparoscopic sleeve gastrectomy (LSG). METHODS: This randomized, double-blind, placebo-controlled, trial of 6-months treatment with probiotics (Bio-25;Supherb) vs. placebo and 6-months of additional follow-up was conducted among 100 morbidly obese non-alcoholic fatty liver disease (NAFLD) patients who underwent LSG surgery...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852204/tub-gene-expression-in-hypothalamus-and-adipose-tissue-and-its-association-with-obesity-in-humans
#17
V J M Nies, D Struik, M G M Wolfs, S S Rensen, E Szalowska, U A Unmehopa, K Fluiter, T P van der Meer, G Hajmousa, W A Buurman, J W Greve, F Rezaee, R Shiri-Sverdlov, R J Vonk, D F Swaab, B H R Wolffenbuttel, J W Jonker, J V van Vliet-Ostaptchouk
BACKGROUND/OBJECTIVES: Mutations in the Tubby gene (TUB) cause late-onset obesity and insulin resistance in mice and syndromic obesity in humans. Although TUB gene function has not yet been fully elucidated, studies in rodents indicate that TUB is involved in the hypothalamic pathways regulating food intake and adiposity. Aside from the function in central nervous system, TUB has also been implicated in energy metabolism in adipose tissue in rodents. We aimed to determine the expression and distribution patterns of TUB in man as well as its potential association with obesity...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28852203/presence-of-obesity-is-associated-with-lower-mortality-in-elderly-patients-with-implantable-cardioverter-defibrillator
#18
A Jahangir, M Mirza, M Shahreyar, T Mengesha, R Shearer, S Sultan, A Jahangir, I Choudhuri, V Nangia, A Dhala, A Bhatia, I Niazi, J Sra, A J Tajik
BACKGROUND: Higher body mass index (BMI) is associated with greater prevalence of cardiovascular risk factors, yet an inverse relationship between obesity and survival after cardiovascular events has been described. It is unclear whether a similar relationship exists for patients with implantable cardioverter defibrillators (ICD) at high risk for mortality. We aimed to assess the impact of BMI on mortality and cardiovascular hospitalization in patients with ICD. METHODS: Patients who underwent ICD implantation in 2010-2011 were divided into normal (<25 kg/m(2)), overweight (25-29...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28819323/excessive-body-fat-linked-to-blunted-somatosensory-cortex-response-to-general-reward-in-adolescents
#19
J F Navas, A Barros-Loscertales, V Costumero-Ramos, J Verdejo-Román, R Vilar-López, A Verdejo-García
BACKGROUND AND AIMS: The brain reward system is key to understanding adolescent obesity in the current obesogenic environment, rich in highly appetising stimuli, to which adolescents are particularly sensitive. We aimed to examine the association between body fat levels and brain reward system responsivity to general (monetary) rewards in male and female adolescents. METHOD: Sixty-eight adolescents (34 females; mean age [standard deviation]=16.56 [1.35]) were measured for body fat levels with bioelectric impedance, and underwent a functional magnetic resonance imaging (fMRI) scan during the Monetary Incentive Delay (MID) task...
August 18, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28816228/association-of-adiposity-telomere-length-and-mortality-data-from-the-nhanes-1999-2002
#20
J A Batsis, T A Mackenzie, E Vasquez, C M Germain, R T Emeny, P Rippberger, F Lopez-Jimenez, S J Bartels
BACKGROUND/OBJECTIVES: Telomere shortening is associated with age and risk of medical co-morbidity. We assessed the relationship between measures of adiposity, leukocyte telomere length, and mortality and whether it is modified by age. SUBJECTS/METHODS: Subjects with dual energy x-ray absorptiometry (DEXA) measures were identified using the National Health and Nutrition Examination Survey 1999-2002. Obesity was categorized using two body fat definitions (BF1%: men ⩾25%; females ⩾35%; BF2% ⩾28% and ⩾38%, respectively), body mass index (BMI), and waist circumference (WC) (men ⩾102 cm; females ⩾88 cm)...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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