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https://www.readbyqxmd.com/read/28197123/altered-regional-gray-matter-volume-in-obese-men-a-structural-mri-study
#1
Bin Zhang, Xiao Tian, Derun Tian, Jinhong Wang, Qiming Wang, Chunshui Yu, Chunbo Li, Jijun Wang
Obesity is associated with a number of health problems, especial insulin resistance and Type 2 diabetes. Our previous study showed that obese males had decreased neural activity in the orbital frontal cortex (OFC) and increased activity in the left putamen (Zhang et al., 2015b), which could indicate altered eating behaviors in obesity related to a hyper-functioning striatum and hypo-functioning inhibitory control. Accordingly, our goal of the current study was to determine whether there are alterations in the brain structures within these two neural systems in obese individuals...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28176035/the-relationship-between-intuitive-eating-and-postpartum-weight-loss
#2
Katie Leahy, Kristoffer S Berlin, Gabrielle G Banks, Jessica Bachman
Objective Postpartum weight loss is challenging for new mothers who report limited time and difficulties following traditional weight loss methods. Intuitive eating (IE) is a behavior that includes eating based on physical hunger and fullness and may have a role in encouraging weight loss. The purpose of this study was to examine the relationship between IE and postpartum weight loss. Methods Women 12-18 months postpartum completed a questionnaire regarding weight changes surrounding pregnancy, exercise, breastfeeding and intuitive eating using the Intuitive Eating Scale...
February 7, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28154977/sex-differences-in-the-response-of-total-pyy-and-glp-1-to-moderate-intensity-continuous-and-sprint-interval-cycling-exercise
#3
Tom J Hazell, Logan K Townsend, Jillian R Hallworth, Jon Doan, Jennifer L Copeland
BACKGROUND: Exercise interventions are often less effective at improving body composition for females than males, potentially due to post-exercise hormonal responses that increase energy intake in females. Recently, sprint interval training was shown to effectively reduce body fat in females despite being relatively low during exercise energy expenditure. PURPOSE: To determine whether any sex difference in total PYY, GLP-1 or perceived hunger exists following moderate-intensity continuous exercise (MICT) and sprint interval exercise (SIT) METHODS: Twenty-one active participants (11 females) participated in three sessions in a randomized crossover design: (1) MICT, 30-min cycling at 65% VO2max; (2) SIT, 6 × 30 s "all-out" sprints with 4-min recovery periods; (3) control (CTRL; no exercise)...
February 2, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28148682/dietary-protein-modifies-the-effect-of-the-mc4r-genotype-on-2-year-changes-in-appetite-and-food-craving-the-pounds-lost-trial
#4
Tao Huang, Yan Zheng, Adela Hruby, Donald A Williamson, George A Bray, Yiru Shen, Frank M Sacks, Lu Qi
BACKGROUND: The melanocortin-4 receptor (MC4R) plays a pivotal role in the regulation of appetite and eating behavior. Variants in the MC4R gene have been related to appetite and obesity. OBJECTIVE: We aimed to examine whether weight-loss diets modified the effect of the "obesity-predisposing" MC4R genotype on appetite-related measures in a randomized controlled trial. METHODS: A total of 811 overweight and obese subjects [25 ≤ body mass index (BMI; kg/m(2)) ≤ 40] aged 30-70 y were included in the 2-y POUNDS Lost (Preventing Overweight Using Novel Dietary Strategies) trial...
February 1, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28139153/effects-of-puddings-containing-whey-protein-and-polydextrose-on-subjective-feelings-of-appetite-and-short-term-energy-intake-in-healthy-adults
#5
Marcela Martinelli, Florencia Walz, Eva Goñi, Giovanna Passutti, Carlos Osella, Silvina R Drago
The aim of this study was to investigate the effects of puddings with whey protein (WP) and polidextrose (PX) on appetite feelings and energy intake. A single-blind randomized, crossover study was carried out in 25 healthy adults. Participants consumed two different puddings, including control or test pudding (12.9 g WP and 6 g PX). Two testing days were completed, including satiety questionnaires and ad libitum lunch. For all participants, energy intake at lunch was similar after consumption of control or test pudding...
January 31, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28134508/synthetic-triterpenoid-inhibition-of-human-ghrelin-o-acyltransferase-the-involvement-of-a-functionally-required-cysteine-provides-mechanistic-insight-into-ghrelin-acylation
#6
Kayleigh R McGovern-Gooch, Nivedita S Mahajani, Ariana Garagozzo, Anthony J Schramm, Lauren G Hannah, Michelle A Sieburg, John D Chisholm, James L Hougland
The peptide hormone ghrelin plays a key role in regulating hunger and energy balance within the body. Ghrelin signaling presents a promising and unexploited target for development of small molecule therapeutics for treatment of obesity, diabetes, and other health conditions. Inhibition of ghrelin O-acyltransferase (GOAT), which catalyzes an essential octanoylation step in ghrelin maturation, offers a potential avenue for controlling ghrelin signaling. Through screening a small molecule library, we have identified a class of synthetic triterpenoids that efficiently inhibit ghrelin acylation by the human isoform of GOAT (hGOAT)...
February 7, 2017: Biochemistry
https://www.readbyqxmd.com/read/28116581/serotonin-enhances-the-impact-of-health-information-on-food-choice
#7
Ivo Vlaev, Molly J Crockett, Luke Clark, Ulrich Müller, Trevor W Robbins
Serotonin has been implicated in promoting self-control, regulation of hunger and physiological homeostasis, and regulation of caloric intake. However, it remains unclear whether the effects of serotonin on caloric intake reflect purely homeostatic mechanisms, or whether serotonin also modulates cognitive processes involved in dietary decision making. We investigated the effects of an acute dose of the serotonin reuptake inhibitor citalopram on choices between food items that differed along taste and health attributes, compared with placebo and the noradrenaline reuptake inhibitor atomoxetine...
January 23, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28107449/the-impact-of-shame-self-criticism-and-social-rank-on-eating-behaviours-in-overweight-and-obese-women-participating-in-a-weight-management-programme
#8
Cristiana Duarte, Marcela Matos, R James Stubbs, Corinne Gale, Liam Morris, Jose Pinto Gouveia, Paul Gilbert
Recent research has suggested that obesity is a stigmatised condition. Concerns with personal inferiority (social rank), shame and self-criticism may impact on weight management behaviours. The current study examined associations between social comparison (shame, self-criticism), negative affect and eating behaviours in women attending a community based weight management programme focused on behaviour change. 2,236 participants of the programme completed an online survey using measures of shame, self-criticism, social comparison, and weight-related affect, which were adapted to specifically address eating behaviour, weight and body shape perceptions...
2017: PloS One
https://www.readbyqxmd.com/read/28098139/appetite-responses-to-high-fat-meals-or-diets-of-varying-fatty-acid-composition-a-comprehensive-review
#9
REVIEW
S Kaviani, J A Cooper
Dietary fatty acids (FA) act as signaling molecules with diverse effects on physiologic function. The aim of this article is to review and summarize the clinical human studies in the literature on how dietary FA composition in meals and diets affects hunger and satiety signaling in the body. Studies examining FA saturation (monounsaturated (MUFA), saturated or polyunsaturated (PUFA) FAs) or FA chain length from high-fat meals/diets were included. Measures of appetite included visual analog scale (VAS) questionnaires, appetite hormones (Cholecystokinin (CCK), glucagon-like peptide-1 (GLP-1), peptide YY (PYY), gastric insulinotropic polypeptide gastric inhibitory peptide (GIP), ghrelin, leptin, insulin) and/or energy intake (EI) data...
January 18, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28078821/collateral-fattening-when-a-deficit-in-lean-body-mass-drives-overeating
#10
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/28078092/severe-obesity-emotions-and-eating-habits-a-case-control-study
#11
M Koski, H Naukkarinen
BACKGROUND: Obesity has a multifaceted etiology that involves genetic, biological and behavioral factors, body growth, eating habits, energy expenditure and the function of adipose tissue. The present study aimed to expand upon knowledge about the relationships among obesity, emotions and eating habits in severely obese individuals using a case-control method. METHODS: The subject group consisted of 112 individuals (81 females and 31 males) receiving a permanent disability pension primarily for obesity...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28074888/a-review-of-the-carbohydrate-insulin-model-of-obesity
#12
REVIEW
K D Hall
The carbohydrate-insulin model of obesity theorizes that diets high in carbohydrate are particularly fattening due to their propensity to elevate insulin secretion. Insulin directs the partitioning of energy toward storage as fat in adipose tissue and away from oxidation by metabolically active tissues and purportedly results in a perceived state of cellular internal starvation. In response, hunger and appetite increases and metabolism is suppressed, thereby promoting the positive energy balance associated with the development of obesity...
January 11, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28069076/effects-of-whole-grain-rye-porridge-with-added-inulin-and-wheat-gluten-on-appetite-gut-fermentation-and-postprandial-glucose-metabolism-a-randomised-cross-over-breakfast-study
#13
Isabella Lee, Lin Shi, Dominic-Luc Webb, Per M Hellström, Ulf Risérus, Rikard Landberg
Whole-grain rye foods reduce appetite, insulin and sometimes glucose responses. Increased gut fermentation and plant protein may mediate the effect. The aims of the present study were to investigate whether the appetite-suppressing effects of whole-grain rye porridge could be enhanced by replacing part of the rye with fermented dietary fibre and plant protein, and to explore the role of gut fermentation on appetite and metabolic responses over 8 h. We conducted a randomised, cross-over study using two rye porridges (40 and 55 g), three 40-g rye porridges with addition of inulin:gluten (9:3; 6:6; 3:9 g) and a refined wheat bread control (55 g), served as part of complete breakfasts...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/28063876/a-randomized-controlled-trial-to-study-the-effects-of-breakfast-on-energy-intake-physical-activity-and-body-fat-in-women-who-are-nonhabitual-breakfast-eaters
#14
Gabrielle Marie LeCheminant, James D LeCheminant, Larry A Tucker, Bruce W Bailey
PURPOSE: The purpose of this study was to determine the effects of eating breakfast on energy intake, physical activity, body weight, and body fat in women who are nonhabitual breakfast eaters over a four-week period. METHODS: Forty-nine women who were nonhabitual breakfast-eaters were randomized to one of two conditions: breakfast or no breakfast. Breakfast eaters were required to eat at least 15% of their daily energy requirement before 8:30 a.m. Non-breakfast eaters did not consume any energy until after 11:30 a...
January 4, 2017: Appetite
https://www.readbyqxmd.com/read/28053201/evidence-that-supports-the-prescription-of-low-carbohydrate-high-fat-diets-a-narrative-review
#15
Timothy David Noakes, Johann Windt
Low-carbohydrate high-fat (LCHF) diets are a highly contentious current topic in nutrition. This narrative review aims to provide clinicians with a broad overview of the effects of LCHF diets on body weight, glycaemic control and cardiovascular risk factors while addressing some common concerns and misconceptions. Blood total cholesterol and LDL-cholesterol concentrations show a variable, highly individual response to LCHF diets, and should be monitored in patients adhering to this diet. In contrast, available evidence from clinical and preclinical studies indicates that LCHF diets consistently improve all other markers of cardiovascular risk-lowering elevated blood glucose, insulin, triglyceride, ApoB and saturated fat (especially palmitoleic acid) concentrations, reducing small dense LDL particle numbers, glycated haemoglobin (HbA1c) levels, blood pressure and body weight while increasing low HDL-cholesterol concentrations and reversing non-alcoholic fatty liver disease (NAFLD)...
January 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28047017/su-c-204-07-radiation-therapy-as-a-potential-treatment-for-obesity-initial-data-from-a-preclinical-investigation
#16
A Pasciak, Y Bradley, L Nodit, A Bourgeois, B Paxton, A Arepally
PURPOSE: To evaluate the feasibility of Yttrium-90 (90Y) radionuclide therapy as a potential treatment for obesity in a porcine model. As the only appetite-stimulating hormone, localized targeting of ghrelin-producing X/A cells in the fundus of the stomach using 90Y may reduce serum ghrelin levels and decrease hunger. METHODS: Under approval of the University of Tennessee IACUC, 8 young female pigs aged 12-13 weeks and weighing 21.8-28.1 Kg were included in this study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28040488/systemic-administration-of-anorexic-gut-peptide-hormones-impairs-hedonic-driven-sucrose-consumption-in-mice
#17
Erina Yamaguchi, Yasunobu Yasoshima, Tsuyoshi Shimura
A number of reports suggest that gut hormones such as cholecystokinin (CCK), glucagon-like peptide 1 (GLP-1), and peptide YY(3-36) (PYY3-36), which are released postprandially, suppress homeostatic food intake and result in satiety and the termination of feeding. However, it remains unclear whether these peptide hormones also suppress non-homeostatic consumption of palatable foods or fluids. To examine whether gut hormones reduce hedonically motivated sugar consumption, we assessed the effects of intraperitoneal administration of these gut hormones on the consumption of a highly palatable sucrose solution, using a mouse model we previously established for binge-like sucrose overconsumption (Yasoshima and Shimura, 2015)...
December 28, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/28035532/ghrelin-and-motilin-control-systems-in-gi-physiology-and-therapeutics
#18
Gareth J Sanger, John Broad, Brid Callaghan, John B Furness
Ghrelin and motilin are released from gastrointestinal endocrine cells during hunger, to act through G protein-coupled receptors that have closely related amino acid sequences. The actions of ghrelin are more complex than motilin because ghrelin also exists outside the GI tract, it is processed to des-acyl ghrelin which has activity, ghrelin can exist in truncated forms and retain activity, the ghrelin receptor can have constitutive activity and is subject to biased agonism and finally additional ghrelin-like and des-acyl ghrelin receptors are proposed...
December 30, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28011947/effects-of-time-of-day-and-the-wingate-test-on-appetite-perceptions-food-intake-and-plasma-levels-of-adipokines
#19
J Bilski, J Jaworek, J Pokorski, J Nitecki, E Nitecka, J Pokorska, A Mazur-Bialy, J Szklarczyk
It has been demonstrated that several aspects of adipose-related physiology including adipokine release, exhibit daily oscillations. Physical exercise exerts a strong influence on adipokine release and a possible reverse disruption of peripheral circadian clocks. The aim of this study was to establish the effects of time of day and the Wingate test on appetite perception, food intake and plasma levels of adipokines. Twenty-four moderately active non-smoking males (mean ± S.D. age: 27.1 ± 3.1 years; height: 1...
October 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28007570/dysfunctional-oleoylethanolamide-signaling-in-a-mouse-model-of-prader-willi-syndrome
#20
Miki Igarashi, Vidya Narayanaswami, Virginia Kimonis, Pietro M Galassetti, Fariba Oveisi, Kwang-Mook Jung, Daniele Piomelli
Prader-Willi syndrome (PWS), the leading genetic cause of obesity, is characterized by a striking hyperphagic behavior that can lead to obesity, type-2 diabetes, cardiovascular disease and death. The molecular mechanism underlying impaired satiety in PWS is unknown. Oleoylethanolamide (OEA) is a lipid mediator involved in the control of feeding, body weight and energy metabolism. OEA produced by small-intestinal enterocytes during dietary fat digestion activates type-α peroxisome proliferator-activated receptors (PPAR-α) to trigger an afferent signal that causes satiety...
December 19, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
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