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Satiety hormons

Oscar Prospéro-García, Octavio Amancio-Belmont, Alline L Becerril Meléndez, Alejandra E Ruiz-Contreras, Mónica Méndez-Díaz
Sleep is regulated by several brain structures, neurotransmitters and neuromodulators. Endocannabinoids (eCBs) are a group of lipids with modulatory activity in the brain and bind mainly to cannabinoid receptors CB1R and CB2R, thereby modulating several brain functions, (memory, mood, food intake, pain perception). Oleoylethanolamide and palmitoylethanolamide belong to the N-acylethanolamides (NAEs) family, another type of active endogenous lipids. They bind to the peroxisome proliferator-activated receptor α but not to CB1R, thereby modulating food satiety, inflammation and pain...
October 15, 2016: Neuroscience and Biobehavioral Reviews
Ulrich Rohde, Cecilie A Federspiel, Peter Vilmann, Ebbe Langholz, Steffen U Friis, Martin Krakauer, Jens F Rehfeld, Jens J Holst, Tina Vilsbøll, Filip K Knop
AIMS: The duodenal-jejunal bypass sleeve ((DJBS) or EndoBarrier Gastrointestinal Liner) induces weight loss in obese subjects and may improve glucose homeostasis in patients with type 2 diabetes (T2D). To explore the underlying mechanisms, we evaluated postprandial physiology including glucose metabolism, gut hormone secretion, gallbladder emptying, appetite and food intake in patients undergoing DJBS treatment. MATERIAL AND METHODS: Ten normal glucose tolerant (NGT) obese subjects and nine age, body weight and body mass index-matched metformin-treated T2D patients underwent a liquid mixed meal test and a subsequent ad libitum meal test before implantation with DJBS and one (1w) and 26 weeks (26w) after implantation...
October 3, 2016: Diabetes, Obesity & Metabolism
Emily A Sawin, Bridget M Stroup, Sangita G Murali, Lucas M O'Neill, James M Ntambi, Denise M Ney
BACKGROUND: Glycomacropeptide (GMP) is a 64-amino acid glycophosphopeptide released from κ-casein during cheesemaking that promotes satiety, reduces body fat, increases bone mass and infers prebiotic and anti-inflammatory effects. The impact of adiposity and gender on bone health is unclear. OBJECTIVE: To determine how feeding female mice diets providing 60% Fat Kcal (high-fat) or 13% Fat Kcal (control) with either GMP or casein as the protein source impacts: body composition, ex vivo fatty acid oxidation, bone (femoral) biomechanical performance, and the relationship between body composition and bone...
2016: PloS One
Gérard Manière, Anna B Ziegler, Flore Geillon, David E Featherstone, Yael Grosjean
Dietary leucine has been suspected to play an important role in insulin release, a hormone that controls satiety and metabolism. The mechanism by which insulin-producing cells (IPCs) sense leucine and regulate insulin secretion is still poorly understood. In Drosophila, insulin-like peptides (DILP2 and DILP5) are produced by brain IPCs and are released in the hemolymph after leucine ingestion. Using Ca(2+)-imaging and ex vivo cultured larval brains, we demonstrate that IPCs can directly sense extracellular leucine levels via minidiscs (MND), a leucine transporter...
September 27, 2016: Cell Reports
Wenda Wu, Hui-Ren Zhou, Steven J Bursian, Jane E Link, James J Pestka
The common foodborne mycotoxin deoxynivalenol (DON, vomitoxin) can negatively impact animal and human health by causing food refusal and vomiting. Gut enteroendocrine cells (EECs) secrete hormones that mediate DON's anorectic and emetic effects. In prior work utilizing a cloned EEC model, our laboratory discovered that DON-induced activation of calcium-sensing receptor (CaSR), a G-coupled protein receptor (GPCR), and transient receptor ankyrin-1 (TRPA1), a transient receptor potential (TRP) channel, drives Ca(2+)-mediated hormone secretion...
September 25, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
Hamdy Shaban, Rory O'Connor, Saak V Ovsepian, Timothy G Dinan, John F Cryan, Harriët Schellekens
Hypothalamic neural circuits are recognised as primary sites of the neuromodulator effect of homeostatic food intake, whereas changes in ventral tegmental area (VTA), hippocampus and amygdala have been implicated in the hedonic, cognitive and emotional aspects of eating. Here, we discuss synaptic transmission and plasticity within brain circuits governing appetite and food intake behaviour, focusing on the metabolic hormones ghrelin and leptin. We discuss functional changes within these circuitries and critically assess the applicability of electrophysiological measurements using in vitro multielectrode array (MEA) systems to identify novel appetite modulators...
September 12, 2016: Drug Discovery Today
Nadine Taleb, Ahmad Haidar, Virginie Messier, Véronique Gingras, Laurent Legault, Rémi Rabasa-Lhoret
The role of glucagon in the pathophysiology of diabetes has long been recognized while its approved clinical use has so far been limited to the emergency treatment of severe hypoglycaemia. A novel use of glucagon as intermittent mini-boluses is proposed in the dual-hormone version (insulin and glucagon) of the external artificial pancreas. Short-term studies suggest that glucagon incorporation has the potential to further decrease the hypoglycaemic risk and improve the overall glucose control. However, long term potential safety and benefits need to be investigated given its recognised systemic effects of glucagon...
September 15, 2016: Diabetes, Obesity & Metabolism
S R Ladyman, D R Grattan
Despite increased leptin concentrations during pregnancy, fat mass and food intake are increased. The satiety response to central leptin is suppressed indicating a state of leptin insensitivity in the hypothalamus. While the regulation of food intake is a major function of leptin, this hormone also influences a while range of functions within the body. These actions include regulation of glucose homeostasis, which undergoes major adaptation in the maternal body to generate optimal conditions for fetal development and growth...
September 13, 2016: Journal of Neuroendocrinology
Joost Overduin, Tinh-Hai Collet, Nenad Medic, Elana Henning, Julia M Keogh, Faye Forsyth, Cheryl Stephenson, Marja W Kanning, Rianne M A J Ruijschop, I Sadaf Farooqi, Agatha A van der Klaauw
There is considerable interest in the effect of foods containing high intensity sweeteners on satiation. However, less is known about low-calorie bulk sweeteners such as erythritol. In this randomized three-way crossover study, we studied 10 lean and 10 obese volunteers who consumed three test meals on separate occasions: (a) control sucrose meal; (b) isovolumic meal with partial replacement of sucrose by erythritol; (c) isocaloric meal which contained more erythritol but equivalent calories to the control meal...
September 9, 2016: Appetite
A M Dostal, A Arikawa, L Espejo, S Bedell, M S Kurzer, N R Stendell-Hollis
BACKGROUND: Green tea extract (GTE) may be involved in a favourable post-prandial response to high-carbohydrate meals. The catechol-O-methyltransferase (COMT) genotype may modify these effects. We examined the acute effects of GTE supplementation on the post-prandial response to a high-carbohydrate meal by assessing appetite-associated hormones and glucose homeostasis marker concentrations in women who consumed 843 mg of (-)-epigallocatechin-3-gallate (EGCG) or placebo capsules for 11-12 months...
September 7, 2016: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
Chen Gilor, Adam J Rudinsky, Melanie J Hall
CLINICAL RELEVANCE: Incretin-based therapies are revolutionizing the field of human diabetes mellitus (DM) by replacing insulin therapy with safer and more convenient long-acting drugs. MECHANISM OF ACTION: Incretin hormones (glucagon-like peptide-1 [GLP-1] and glucose-dependent insulinotropic peptide [GIP]) are secreted from the intestinal tract in response to the presence of food in the intestinal lumen. GLP-1 delays gastric emptying and increases satiety. In the pancreas, GLP-1 augments insulin secretion and suppresses glucagon secretion during hyperglycemia in a glucose-dependent manner...
September 2016: Journal of Feline Medicine and Surgery
James J DiNicolantonio, Amy Berger
Obesity has traditionally been thought of as a state of caloric imbalance, where the intake of calories exceeds the expenditure or 'burning' of calories. However, a more nuanced appreciation for the complex biochemistry and physiology of cellular energy generation suggests that obesity is a state of hormonal imbalance causing increased shunting of food energy into adipose tissue for storage, resulting in decreased satiety and ultimately leading to increased caloric intake. Adding to this hypothesis, we propose that obesity is also a state of nutrient and energy deficit, leading to decreased fatty acid mobilisation and oxidation, the result of which may be a natural disinclination towards physical activity...
2016: Open Heart
Konstantinos Korompokis, Elin Östman, Anestis Dougkas
The underlying mechanisms for the effect of proteins on appetite regulation, especially in presence of variable macronutrient composition, are not fully elucidated. The present study investigated the absorption kinetics of proteins after co-ingestion with the other macronutrients and examined the impact of circulating amino acids on appetite and satiety-related gut hormones. A randomized, within-subjects, 2-level full factorial design was implemented, where thirty six healthy subjects consumed seven preloads with similar energy density (3...
August 17, 2016: Appetite
Sridevi Krishnan, Rebecca R Tryon, William F Horn, Lucas Welch, Nancy L Keim
OBJECTIVE: To understand the association between ovarian hormones, non-acute satiety hormones and craving calorie dense foods in the luteal phase. METHODS: 17 premenopausal women, mean age 23.2 y, mean BMI 22.4kg/m(2) with regular menstrual cycles were studied during late follicular (FP) and luteal phases (LP). Estradiol, progesterone, DHEAS, SHBG, insulin and leptin, were measured in fasting samples. The validated Food Craving Inventory was used to record the types of foods volunteers habitually ate - rich in fat, carbohydrate or sweet taste, as well as craved during the LP of their menstrual cycle...
October 15, 2016: Physiology & Behavior
Karine Maria Martins Bezerra Carvalho, Tiago Sousa de Melo, Karina Moura de Melo, Ana Luiza Gomes Quinderé, Francisca Tuelly Bandeira de Oliveira, Ana Flávia Seraine Custódio Viana, Paulo Iury Gomes Nunes, Josiane da Silva Quetz, Daniel de Araújo Viana, Armenio André de Carvalho Almeida da Silva, Alexandre Havt, Said Gonçalves da Cruz Fonseca, Mariana Helena Chaves, Vietla Satyanarayana Rao, Flávia Almeida Santos
Obesity remains a global problem. In search of phytochemicals that have antiobesity potential, this study evaluated α,β-amyrin, a triterpenoid mixture from Protium heptaphyllum, on high-fat diet-induced obesity in mice. Groups of mice (n = 8) were fed a normal diet or a high-fat diet, and were orally treated or not treated with either α,β-amyrin (10 or 20 mg/kg) or sibutramine (10 mg/kg) for 15 weeks. Variables measured at termination were body weight, visceral fat accumulation, adipocyte surface area, peroxisome proliferator-activated receptor gamma, and lipoprotein lipase expressions in adipose tissue, the levels of plasma glucose and insulin, the satiety hormones ghrelin and leptin, the digestive enzymes amylase and lipase, and the inflammatory mediators TNF-α, interleukin-6, and MCP-1...
August 15, 2016: Planta Medica
Thomas Bächler, Carel W le Roux, Marco Bueter
Bariatric surgery is currently the most effective option for the treatment of morbid obesity and its associated comorbidities. Recent clinical and experimental findings have challenged the role of mechanical restriction and caloric malabsorption as the main mechanisms for weight loss and health benefits. Instead, other mechanisms including increased levels of satiety gut hormones, altered gut microbiota, changes in bile acid metabolism, and/or energy expenditure have been proposed as explanations for benefits of bariatric surgery...
2016: Clinical and Experimental Gastroenterology
A Veronica Witte, Theresa Köbe, Anders Graunke, Jan Philipp Schuchardt, Andreas Hahn, Valentina A Tesky, Johannes Pantel, Agnes Flöel
Metabolic changes have been suggested to contribute to dementia and its precursor mild cognitive impairment (MCI), yet previous results particularly for the "satiety hormone" leptin are mixed. Therefore, we aimed to determine if MCI patients show systematic differences in leptin, independent of sex, adipose mass, age, and glucose and lipid metabolism, and whether leptin levels correlated with memory performance and hippocampal integrity. Forty MCI patients (20 females, aged 67 years ± 7 SD) were compared to 40 healthy controls (HC) that were pair-wise matched for sex, age, and body fat...
August 11, 2016: Human Brain Mapping
Nadin Al Shukor, Rozenn Ravallec, John Van Camp, Katleen Raes, Guy Smagghe
Animal experiments showed that flavonoids might have the potential for an anti-obesity effect by reducing weight and food intake. However, the exact mechanisms that could be involved in these proposed effects are still under investigation. The complex process of food intake is partially regulated by gastrointestinal hormones. Cholecystokinin (CCK) is the best known gastrointestinal hormone to induce satiety signal that plays a key role in food intake regulation. It is released from the endocrine cells (I cell) in response to the ingestion of nutrients into the small intestine...
September 2016: Fitoterapia
Jessie A Elliott, Neil G Docherty, Hans-Georg Eckhardt, Suzanne L Doyle, Emer M Guinan, Narayanasamy Ravi, John V Reynolds, Carel W le Roux
OBJECTIVE: To prospectively characterize changes in body weight, satiety, and postprandial gut hormone profiles following esophagectomy. BACKGROUND: With improved oncologic outcomes in esophageal cancer, there is an increasing focus on functional status and health-related quality of life in survivorship. Early satiety and weight loss are common after esophagectomy, but the pathophysiology of these phenomena remains poorly understood. METHODS: In this prospective study, consecutive patients undergoing esophagectomy with gastric conduit reconstruction were studied preoperatively and at 10 days, 6 weeks, and 3 months postoperatively...
July 22, 2016: Annals of Surgery
Marta Campolier, Sangeetha PariyarathThondre, Miriam Clegg, Amir Shafat, Ali Mcintosh, Helen Lightowler
Nutrition-related studies avoid the participation of pre-menopausal women due to the potential effect of the menstrual cycle (MC) on their appetite regulation. It is generally accepted that women increase their energy intake during the luteal phase (LPh) compared to the follicular (FPh), however what happens in the menstrual phase (MPh) and how this might be regulated remains uncertain. Although some research indicates changes in the gastric emptying (GE) velocity, whether PYY is affected by the MC phase, remains unknown...
July 21, 2016: Appetite
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