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Appetite hormones

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https://www.readbyqxmd.com/read/28446382/compensatory-mechanisms-activated-with-intermittent-energy-restriction-a-randomized-control-trial
#1
Sílvia Ribeiro Coutinho, Eline Holli Halset, Sigrid Gåsbakk, Jens F Rehfeld, Bård Kulseng, Helen Truby, Cátia Martins
BACKGROUND & AIMS: Strong compensatory responses, with reduced resting metabolic rate (RMR), increased exercise efficiency (ExEff) and appetite, are activated when weight loss (WL) is achieved with continuous energy restriction (CER), which try to restore energy balance. Intermittent energy restriction (IER), where short spells of energy restriction are interspaced by periods of habitual energy intake, may offer some protection in minimizing those responses. We aimed to compare the effect of IER versus CER on body composition and the compensatory responses induced by WL...
April 7, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28446037/caffeine-coffee-and-appetite-control-a-review
#2
Matthew M Schubert, Christopher Irwin, Rebekah F Seay, Holly E Clarke, Deanne Allegro, Ben Desbrow
Coffee and caffeine consumption has global popularity. However, evidence for the potential of these dietary constituents to influence energy intake, gut physiology, and appetite perceptions remains unclear. The purpose of this review was to examine the evidence regarding coffee and caffeine's influence on energy intake and appetite control. The literature was examined for studies that assessed the effects of caffeine and coffee on energy intake, gastric emptying, appetite-related hormones, and perceptual measures of appetite...
April 27, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28439255/assessing-the-functional-role-of-leptin-in-energy-homeostasis-and-the-stress-response-in-vertebrates
#3
REVIEW
Courtney A Deck, Jamie L Honeycutt, Eugene Cheung, Hannah M Reynolds, Russell J Borski
Leptin is a pleiotropic hormone that plays a critical role in regulating appetite, energy metabolism, growth, stress, and immune function across vertebrate groups. In mammals, it has been classically described as an adipostat, relaying information regarding energy status to the brain. While retaining poor sequence conservation with mammalian leptins, teleostean leptins elicit a number of similar regulatory properties, although current evidence suggests that it does not function as an adipostat in this group of vertebrates...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439092/timeline-of-changes-in-appetite-during-weight-loss-with-a-ketogenic-diet
#4
S Nymo, S R Coutinho, J Jørgensen, J F Rehfeld, H Truby, B Kulseng, C Martins
BACKGROUND/OBJECTIVE: Diet-induced weight loss (WL) leads to increased hunger and reduced fullness feelings, increased ghrelin and reduced satiety peptides concentration (glucagon-like peptide-1 (GLP-1), cholecystokinin (CCK) and peptide YY (PYY)). Ketogenic diets seem to minimise or supress some of these responses. The aim of this study was to determine the timeline over which changes in appetite occur during progressive WL with a ketogenic very-low energy diet (VLED). SUBJECTS/METHODS: Thirty-one sedentary adults (18 men), with obesity (BMI: 37±4...
April 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28436760/diabetes-management-by-probiotics-current-knowledge-and-future-pespective
#5
Aziz Homayouni-Rad, Ahmad-Reza Soroush, Leila Khalili, Leila Norouzi-Panahi, Zahra Kasaie, Hanieh-Sadat Ejtahed
Diabetes mellitus, a multifactorial disorder, is related to the intestinal microbiota via numerous molecular mechanisms. The vast increase in the prevalence of diabetes and its associated complications requires a natural and safe solution. There is a growing evidence of gut microbiota effi ciency in improving insulin resistance, impaired insulin secretion, and metabolic complications in diabetic patients. Probiotics are defi ned as live microorganisms that, when ingested in adequate amounts, exert health benefi ts to the host...
April 24, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28436331/lep-expression-and-its-role-in-obesity-and-type-2-diabetes
#6
Muhammad Imran Qadir, Zara Ahmed
Obesity is metabolic disorder that increases the risk of diabetes, heart disease, and other metabolic syndromes in human beings. One sign of diabetes is increased blood glucose levels in the body. Glucose levels increase due to problems with insulin secretion or insulin resistance. Maturity onset of diabetes of the young is more common in adults and occurs due to insulin resistance. Both diabetes and obesity are major problems that are responsible for the death of millions of individuals every year, worldwide...
2017: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/28431559/effects-of-whole-grain-rye-with-and-without-resistant-starch-type-2-supplementation-on-glucose-tolerance-gut-hormones-inflammation-and-appetite-regulation-in-an-11-14-5%C3%A2-hour-perspective-a-randomized-controlled-study-in-healthy-subjects
#7
Jonna C Sandberg, Inger M E Björck, Anne C Nilsson
BACKGROUND: The prevalence of obesity is increasing worldwide and prevention is needed. Whole grain has shown potential to lower the risk of obesity, cardiovascular disease and type 2 diabetes. One possible mechanism behind the benefits of whole grain is the gut fermentation of dietary fiber (DF), e.g. non-starch polysaccharides and resistant starch (RS), in whole grain. The purpose of the study is to investigate the effect of whole grain rye-based products on glucose- and appetite regulation...
April 21, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28426945/testosterone-levels-in-healthy-men-correlate-negatively-with-serotonin-4-receptor-binding
#8
Erik Perfalk, Sofi da Cunha-Bang, Klaus K Holst, Sune Keller, Claus Svarer, Gitte M Knudsen, Vibe G Frokjaer
The serotonergic system integrates sex steroid information and plays a central role in mood and stress regulation, cognition, appetite and sleep. This interplay may be critical for likelihood of developing depressive episodes, at least in a subgroup of sensitive individuals. The serotonin 4 receptor (5-HT4R) indexes central serotonergic tonus, which may be related to endogenous sex-steroid levels in the mentally healthy state even though this remains elusive. Here we evaluate if peripheral levels of estradiol and testosterone are associated with 5-HT4R binding as imaged by [(11)C]SB207145 positron emission tomography in a group of 41 healthy men...
March 22, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28422951/helicobacter-pylori-infection-and-serum-leptin-obestatin-and-ghrelin-levels-in-mexican-schoolchildren
#9
Carolina Romo-González, Eugenia Mendoza, Robertino M Mera, Rafael Coria-Jiménez, Patricia Chico-Aldama, Rita Gomez-Diaz, Ximena Duque
BACKGROUND: There is little information about the possible role of H. pylori infection on appetite-regulating peptides in children. This study evaluated the association between H. pylori infection and serum levels of ghrelin, leptin, and obestatin in schoolchildren. METHODS: One hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every six months for one year by a breath test using (13)C-urea; schoolchildren with consistently positive or negative results were selected to participate...
April 19, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28420089/suppression-of-ghs-r-in-agrp-neurons-mitigates-diet-induced-obesity-by-activating-thermogenesis
#10
Chia-Shan Wu, Odelia Y N Bongmba, Jing Yue, Jong Han Lee, Ligen Lin, Kenji Saito, Geetali Pradhan, De-Pei Li, Hui-Lin Pan, Allison Xu, Shaodong Guo, Yong Xu, Yuxiang Sun
Ghrelin, an orexigenic hormone released primarily from the gut, signals the hypothalamus to stimulate growth hormone release, enhance appetite and promote weight gain. The ghrelin receptor, aka Growth Hormone Secretagogue Receptor (GHS-R), is highly expressed in the brain, with highest expression in Agouti-Related Peptide (AgRP) neurons of the hypothalamus. We recently reported that neuron-specific deletion of GHS-R completely prevents diet-induced obesity (DIO) in mice by activating non-shivering thermogenesis...
April 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28400207/the-safety-and-efficacy-of-growth-hormone-secretagogues
#11
REVIEW
John T Sigalos, Alexander W Pastuszak
INTRODUCTION: Growth hormone (GH) increases lean body mass, decreases fat mass, increases exercise tolerance and maximum oxygen uptake, enhances muscle strength, and improves linear growth. Long-term studies of GH administration offer conflicting results on its safety, which has led to strict Food and Drug Administration criteria for GH use. The potential drawbacks of exogenous GH use are believed to be due in part to impaired regulatory feedback. AIM: To review the literature on GH secretagogues (GHSs), which include GH-releasing peptides and the orally available small-molecule drug ibutamoren mesylate...
April 8, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28398946/high-intensity-interval-training-appetite-and-reward-value-of-food-in-the-obese
#12
Catia Martins, Irina Aschehoug, Marit Ludviksen, Jens Holst, Graham Finlayson, Ulrik Wisloff, Linda Morgan, Neil King, Bård Kulseng
PURPOSE: Studies on the impact of chronic interval training on appetite in the obese population are scarce. The aim of this study was to determine the effect of 12 weeks of isocaloric programs of moderate-intensity continuous training (MICT) or high-intensity interval training (HIIT), or a short-duration HIIT (1/2HIIT), on subjective feelings of appetite, appetite-related hormones and reward value of food in sedentary obese individuals. METHODS: Forty-six sedentary obese individuals (30 women and 16 men), with a BMI of 33...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28398233/therapeutic-potential-of-targeting-the-ghrelin-pathway
#13
REVIEW
Gustav Colldén, Matthias H Tschöp, Timo D Müller
Ghrelin was discovered in 1999 as the endogenous ligand of the growth-hormone secretagogue receptor 1a (GHSR1a). Since then, ghrelin has been found to exert a plethora of physiological effects that go far beyond its initial characterization as a growth hormone (GH) secretagogue. Among the numerous well-established effects of ghrelin are the stimulation of appetite and lipid accumulation, the modulation of immunity and inflammation, the stimulation of gastric motility, the improvement of cardiac performance, the modulation of stress, anxiety, taste sensation and reward-seeking behavior, as well as the regulation of glucose metabolism and thermogenesis...
April 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28396702/interaction-between-prenatal-pesticide-exposure-and-a-common-polymorphism-in-the-pon1-gene-on-dna-methylation-in-genes-associated-with-cardio-metabolic-disease-risk-an-exploratory%C3%A2-study
#14
Ken Declerck, Sylvie Remy, Christine Wohlfahrt-Veje, Katharina M Main, Guy Van Camp, Greet Schoeters, Wim Vanden Berghe, Helle R Andersen
BACKGROUND: Prenatal environmental conditions may influence disease risk in later life. We previously found a gene-environment interaction between the paraoxonase 1 (PON1) Q192R genotype and prenatal pesticide exposure leading to an adverse cardio-metabolic risk profile at school age. However, the molecular mechanisms involved have not yet been resolved. It was hypothesized that epigenetics might be involved. The aim of the present study was therefore to investigate whether DNA methylation patterns in blood cells were related to prenatal pesticide exposure level, PON1 Q192R genotype, and associated metabolic effects observed in the children...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28392300/glucagon-like-peptide-1-receptor-agonists-a-class-update-for-treating-type-2-diabetes
#15
REVIEW
Julie A Lovshin
Current management options for treating type 2 diabetes are diverse. Many different classes of antidiabetes therapies are used in clinic, and several new candidates are in late-phase clinical trial. This therapeutic abundance is a windfall for patients because it facilitates individualized patient care. Evidence-based positioning of these agents is challenging, however, requiring comprehensive and balanced familiarity with each drug class. In this review, I provide a clinical update of glucagon-like peptide-1 receptor agonists (GLP-1RAs), a class of incretin-based, injectable antidiabetes therapies which improve fasting and postprandial blood glucose control through glucose-dependent pancreatic islet cell hormone secretion without significant risks for hypoglycemia...
April 5, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/28379519/the-effect-of-a-subcutaneous-infusion-of-glp-1-oxm-and-pyy-on-energy-intake-and-expenditure-in-obese-volunteers
#16
Tricia Tan, Preeshila Behary, George Tharakan, James Minnion, Werd Al-Najim, Nicolai J Wewer Albrechtsen, Jens J Holst, Stephen R Bloom
Background: Roux-en-Y gastric bypass (RYGB) surgery is currently the most effective treatment for obesity, although limited by availability and operative risk. The gut hormones Glucagon-like peptide-1 (GLP-1), Peptide YY (PYY) and Oxyntomodulin (OXM) are elevated post-prandially after RYGB, which has been postulated to contribute to its metabolic benefits. Objective: We hypothesised that infusion of the three gut hormones to achieve levels similar to those encountered post-prandially in RYGB patients might be effective in suppressing appetite...
April 4, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28379172/very-low-volume-sprint-interval-exercise-suppresses-subjective-appetite-lowers-acylated-ghrelin-and-elevates-glp-1-in-overweight-individuals-a-pilot-study
#17
Adrian Holliday, Andrew K Blannin
High-intensity exercise has been shown to elicit a transient suppression of appetite and create a more anorexigenic profile of appetite-associated hormones. It is yet to be fully elucidated whether such a response is observed following very low-volume, intermittent exercise at supramaximal intensity in those who are overweight. Eight overweight individuals (BMI 27.7 ± 1.7 kg·m²) completed resting (REST) and exercise (EX) trials in a counterbalanced order. EX consisted of 4 × 30 s "flat-out" cycling on an ergometer (adapted Wingate test)...
April 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28377744/non-neuronal-cells-in-the-hypothalamic-adaptation-to-metabolic-signals
#18
REVIEW
Alejandra Freire-Regatillo, Pilar Argente-Arizón, Jesús Argente, Luis Miguel García-Segura, Julie A Chowen
Although the brain is composed of numerous cell types, neurons have received the vast majority of attention in the attempt to understand how this organ functions. Neurons are indeed fundamental but, in order for them to function correctly, they rely on the surrounding "non-neuronal" cells. These different cell types, which include glia, epithelial cells, pericytes, and endothelia, supply essential substances to neurons, in addition to protecting them from dangerous substances and situations. Moreover, it is now clear that non-neuronal cells can also actively participate in determining neuronal signaling outcomes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28377124/characterization-of-appetite-regulating-factors-in-platyfish-xiphophorus-maculatus-cyprinodontiformes-poeciliidae
#19
Paul M Pitts, Hélène Volkoff
The regulation of energy in fish, like most vertebrates, is a complex process that involves a number of brain and peripheral hormones. These signals include anorexigenic (e.g. cholecystokinin (CCK) and cocaine- and amphetamine-regulated transcript (CART)) as well as orexigenic (e.g. orexin and neuropeptide Y (NPY)) peptides. Platyfish, Xiphophorus maculatus, are freshwater viviparous fish for which little is known about the endocrine mechanisms regulating feeding. In order to elucidate the role of these peptides in the regulation of feeding of platyfish, we examined the effects of peripheral injections of CCK and orexin on feeding behavior and food intake...
April 3, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28377097/the-short-neuropeptide-f-modulates-olfactory-sensitivity-of-bactrocera-dorsalis-upon-starvation
#20
Hong-Bo Jiang, Shun-Hua Gui, Li Xu, Yu-Xia Pei, Guy Smagghe, Jin-Jun Wang
The insect short neuropeptide F (sNPF) family has been shown to modulate diverse physiological processes, such as feeding, appetitive olfactory behavior, locomotion, sleep homeostasis and hormone release. In this study, we identified the sNPF (BdsNPF) and its receptor (BdsNPFR) in an important agricultural pest, the oriental fruit fly Bactrocera dorsalis (Hendel). Afterwards, the receptor cDNA was functionally expressed in Chinese hamster ovary cell lines. Activation of BdsNPFR by sNPF peptides caused an increase in intracellular calcium ions, with a 50% effective concentration values at the nanomolar level...
April 2, 2017: Journal of Insect Physiology
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