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Appetite hormones

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https://www.readbyqxmd.com/read/28821663/agrp-neurons-can-increase-food-intake-during-conditions-of-appetite-suppression-and-inhibit-anorexigenic-parabrachial-neurons
#1
Rachel A Essner, Alison G Smith, Adam A Jamnik, Anna R Ryba, Zoe D Trutner, Matthew E Carter
To maintain energy homeostasis, orexigenic (appetite-inducing) and anorexigenic (appetite suppressing) brain systems functionally interact to regulate food intake. Within the hypothalamus, neurons that express agouti-related protein (AgRP) sense orexigenic factors and orchestrate an increase in food-seeking behavior. In contrast, calcitonin gene-related peptide (CGRP)-expressing neurons in the parabrachial nucleus (PBN) suppress feeding. PBN CGRP neurons become active in response to anorexigenic hormones released following a meal, including amylin, secreted by the pancreas, and cholecystokinin (CCK), secreted by the small intestine...
August 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28814486/serum-ghrelin-is-associated-with-risk-of-colorectal-adenocarcinomas-in-the-atbc-study
#2
Gwen Murphy, Amanda J Cross, Sanford M Dawsey, Frank Z Stanczyk, Farin Kamangar, Stephanie J Weinstein, Philip R Taylor, Satu Männistö, Demetrius Albanes, Christian C Abnet, Neal D Freedman
BACKGROUND: Colorectal cancers are the third most common cancers in women and men in the USA. While dietary and lifestyle factors such as Western diet, physical inactivity and obesity have been linked to an increased risk of this malignancy, the mechanisms for these associations are unclear. GI hormones, including ghrelin, are involved in energy balance by mediating appetite and metabolism; however, the association between ghrelin and colorectal cancer has not been studied. METHODS: We conducted a case-control study nested within the all-male Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study of Finnish smokers (aged 50-69 years) to examine serum ghrelin concentration and colorectal cancer risk...
August 16, 2017: Gut
https://www.readbyqxmd.com/read/28809789/comparison-of-the-effects-of-goat-dairy-and-cow-dairy-based-breakfasts-on-satiety-appetite-hormones-and-metabolic-profile
#3
Elehazara Rubio-Martín, Eva García-Escobar, Maria-Soledad Ruiz de Adana, Fuensanta Lima-Rubio, Laura Peláez, Angel-María Caracuel, Francisco-Javier Bermúdez-Silva, Federico Soriguer, Gemma Rojo-Martínez, Gabriel Olveira
The satiating effects of cow dairy have been thoroughly investigated; however, the effects of goat dairy on appetite have not been reported so far. Our study investigates the satiating effect of two breakfasts based on goat or cow dairy and their association with appetite related hormones and metabolic profile. Healthy adults consumed two breakfasts based on goat (G-Breakfast) or cow (C-Breakfast) dairy products. Blood samples were taken and VAS tests were performed at different time points. Blood metabolites were measured and Combined Satiety Index (CSI) and areas under the curves (AUC) were calculated...
August 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28808865/glucagon-like-peptides-1-and-2-are-involved-in-satiety-modulation-after-modified-biliopancreatic-diversion-results-of-a-pilot-study
#4
Everton Cazzo, José Carlos Pareja, Elinton Adami Chaim, Cláudio Saddy Rodrigues Coy, Daniéla Oliveira Magro
BACKGROUND: This paper aimed to evaluate the influence of modified biliopancreatic diversion (BPD) on the levels of GLP-1 and GLP-2 and correlate them with satiety regulation. METHODS: This is a pilot prospective cohort study that evaluated six mildly obese individuals with type 2 diabetes mellitus, which underwent modified BPD and were followed-up for 12 months. Levels of GLP-1 and GLP-2 after a standard meal tolerance test were determined and correlated with satiety scores obtained by means of a visual analogue scale (VAS)...
August 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28806640/the-importance-of-nutrition-in-aiding-recovery-from-substance-use-disorders-a-review
#5
REVIEW
Kendall D Jeynes, E Leigh Gibson
BACKGROUND: Nutrition is a prerequisite for health; yet, there is no special nutritional assessment or guidance for drug and alcohol dependent individuals, despite the fact that their food consumption is often very limited, risking malnutrition. Further, the premise is examined that malnutrition may promote drug seeking and impede recovery from substance use disorders (SUD). METHOD: A narrative review addressed the relationship between substance use disorders and nutrition, including evidence for malnutrition, as well as their impact on metabolism and appetite regulation...
August 4, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28805670/appetite-and-gut-hormones-response-to-a-putative-%C3%AE-glucosidase-inhibitor-salacia-chinensis-in-overweight-obese-adults-a-double-blind-randomized-controlled-trial
#6
Lihong Hao, Yvette Schlussel, Krista Fieselmann, Stephen H Schneider, Sue A Shapses
Animal studies indicate Salacia reduces body weight, possibly due to its α-glucosidase inhibitor (α-GI) properties, but this has not been examined previously. In this study, a randomized, placebo-controlled, three-way cross-over design was used to evaluate whether Salacia Chinensis (SC) reduces appetite in healthy overweight/obese individuals (body mass index 28.8 ±3.6 kg/m²; 32 ± 12 years). Forty-eight participants were fasted overnight and consumed a dose of SC (300 or 500 mg) or placebo with a fixed breakfast meal at each visit...
August 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28802874/targeting-gastrointestinal-nutrient-sensing-mechanisms-to-treat-obesity
#7
REVIEW
Mariana Norton, Kevin G Murphy
Gut hormones have important roles in the regulation of appetite and glucose homeostasis. Understanding how macronutrient sensing in the gastrointestinal tract modulates gut hormone release may reveal novel pharmacological or dietary approaches to metabolic disease. In this short review we discuss the mechanisms by which the gut senses macronutrients and the products of macronutrient digestion, and their putative utility in treating obesity and related conditions.
August 10, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28794822/overview-of-glucagon-like-peptide-1-receptor-agonists-for-the-treatment-of-patients-with-type-2-diabetes
#8
Kelvin Lingjet Tran, Young In Park, Shalin Pandya, Navin John Muliyil, Brandon David Jensen, Kovin Huynh, Quang T Nguyen
BACKGROUND: It is estimated that 29.1 million people or 9.3% of the US population have diabetes, which contributes to considerable medical and financial burden. Type 2 diabetes mellitus is characterized by insulin resistance and insulin secretion impairment leading to hyperglycemia. The presence of insulin resistance is strongly correlated with obesity. OBJECTIVE: This article reviews the available glucagon-like peptide-1 (GLP-1) receptor agonists and their role in the management of patients with diabetes, to help guide the selection of the most suitable agent for the individualized treatment of patients with type 2 diabetes...
June 2017: American Health & Drug Benefits
https://www.readbyqxmd.com/read/28794470/endocrine-disruptors-induce-perturbations-in-endoplasmic-reticulum-and-mitochondria-of-human-pluripotent-stem-cell-derivatives
#9
Uthra Rajamani, Andrew R Gross, Camille Ocampo, Allen M Andres, Roberta A Gottlieb, Dhruv Sareen
Persistent exposure to man-made endocrine disrupting chemicals during fetal endocrine development may lead to disruption of metabolic homeostasis contributing to childhood obesity. Limited cellular platforms exist to test endocrine disrupting chemical-induced developmental abnormalities in human endocrine tissues. Here we use an human-induced pluripotent stem cell-based platform to demonstrate adverse impacts of obesogenic endocrine disrupting chemicals in the developing endocrine system. We delineate the effects upon physiological low-dose exposure to ubiquitous endocrine disrupting chemicals including, perfluoro-octanoic acid, tributyltin, and butylhydroxytoluene, in endocrine-active human-induced pluripotent stem cell-derived foregut epithelial cells and hypothalamic neurons...
August 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28794212/addition-of-rye-bran-and-pea-fiber-to-pork-meatballs-enhances-subjective-satiety-in-healthy-men-but-does-not-change-glycemic-or-hormonal-responses-a-randomized-crossover-meal-test-study
#10
Ursula Kehlet, Josephine Kofod, Jens J Holst, Christian Ritz, Margit D Aaslyng, Anne Raben
Background: The development of high-protein, fiber-rich foods targeting appetite control could be an efficient tool in obesity prevention.Objectives: We investigated whether ad libitum energy intake (EI), appetite, and metabolic markers in a meal context were affected by 1) fiber addition (rye bran and pea fiber) to pork meatballs, 2) the food matrix of the fiber (fiber meatballs compared with fiber bread), or 3) the protein source (animal compared with vegetable protein patties).Methods: In a crossover design, 40 healthy men [mean ± SD: body mass index (BMI; in kg/m(2)), 22...
August 9, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28792489/l-phenylalanine-modulates-gut-hormone-release-and-glucose-tolerance-and-suppresses-food-intake-through-the-calcium-sensing-receptor-in-rodents
#11
A Alamshah, E Spreckley, M Norton, J S Kinsey-Jones, A Amin, A Ramgulam, Y Cao, R Johnson, K Saleh, E Akalestou, Z Malik, N Gonzalez-Abuin, A Jomard, R Amarsi, A Moolla, P R Sargent, G W Gray, S R Bloom, K G Murphy
OBJECTIVE: High-protein diets (HPDs) are associated with greater satiety and weight loss than diets rich in other macronutrients. The exact mechanisms by which HPDs exert their effects are unclear. However, evidence suggests that the sensing of amino acids produced as a result of protein digestion may have a role in appetite regulation and satiety. We investigated the effects of l-phenylalanine (L-Phe) on food intake and glucose homeostasis in rodents. METHODS: We investigated the effects of the aromatic amino-acid and calcium-sensing receptor (CaSR) agonist l-phenylalanine (L-Phe) on food intake and the release of the gastrointestinal (GI) hormones peptide YY (PYY), glucagon-like peptide-1 (GLP-1) and ghrelin in rodents, and the role of the CaSR in mediating these effects in vitro and in vivo...
July 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28782535/alpha-melanocyte-stimulating-hormone-induced-anorexia-in-japanese-quail-coturnix-japonica-likely-involves-the-ventromedial-hypothalamus-and-paraventricular-nucleus-of-the-hypothalamus
#12
Taylor Lear, Lingbin Liu, Madison O'Donnell, Betty R McConn, D Michael Denbow, Mark A Cline, Elizabeth R Gilbert
Alpha-melanocyte stimulating hormone (α-MSH) reduces food intake in birds and mammals. The objective of this experiment was to determine effects of α-MSH on food and water intake, and hypothalamic c-Fos immunoreactivity and appetite-associated factor mRNA in Japanese quail (Coturnix japonica), a species that has not undergone the same artificial selection for growth-related traits as the chicken. At 7days post-hatch, 3-h-fasted quail were intracerebroventricularly (ICV) injected into the lateral ventricle with 0 (vehicle), 0...
August 4, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28769121/acute-effects-of-exercise-on-appetite-ad-libitum-energy-intake-and-appetite-regulatory-hormones-in-lean-and-overweight-obese-men-and-women
#13
J A Douglas, J A King, D J Clayton, A P Jackson, J A Sargeant, A E Thackray, M J Davies, D J Stensel
BACKGROUND: Acute exercise does not elicit compensatory changes in appetite parameters in lean individuals; however, less is known about responses in overweight individuals. This study compared the acute effects of moderate-intensity exercise on appetite, energy intake and appetite-regulatory hormones in lean and overweight/obese individuals. METHODS: Forty-seven healthy lean (n=22, 11 females; mean(s.d.) 37.5(15.2) years; 22.4(1.5) kg·m(-2)) and overweight/obese (n=25, 11 females; 45...
August 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28751205/central-injection-of-a-synthetic-chicken-partial-leptin-peptide-does-not-affect-food-intake-in-chicks
#14
Wil Sims, Jiaqing Yi, Mark A Cline, Elizabeth R Gilbert
Leptin is an adipose tissue-derived hormone in mammals that plays an important role in whole body energy balance via its inhibitory effects on food intake mediated through the hypothalamus. Chicken leptin has a low sequence homology to mammalian leptin and its role in appetite regulation is not reported; hence the objective of this study was to determine effects of central injection of chicken leptin on food and water intake and associated behaviors in chicks. Chicks were intracerebroventricularly injected with 0 (vehicle), 0...
July 24, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28747384/feeding-releases-endogenous-opioids-in-humans
#15
Jetro J Tuulari, Lauri Tuominen, Femke de Boer, Jussi Hirvonen, Semi Helin, Pirjo Nuutila, Lauri Nummenmaa
The endogenous opioid system supports a multitude of functions related to appetitive behaviour and feeding in humans and animals, and it has been proposed to support hedonic aspects of feeding thus contributing to development of obesity. Here we used positron emission tomography (PET) to investigate whether feeding results in hedonia-dependent endogenous opioid release in humans. Ten healthy males were recruited for the study. They were scanned with mu-opioid specific ligand [(11)C]carfentanil three times: following a palatable meal, a non-palatable meal, and after an overnight fast...
July 26, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28747330/effects-of-randomized-whey-protein-loads-on-energy-intake-appetite-gastric-emptying-and-plasma-gut-hormone-concentrations-in-older-men-and-women
#16
Caroline Giezenaar, Laurence G Trahair, Natalie D Luscombe-Marsh, Trygve Hausken, Scott Standfield, Karen L Jones, Kylie Lange, Michael Horowitz, Ian Chapman, Stijn Soenen
Background: Protein- and energy-rich supplements are used widely for the management of malnutrition in the elderly. Information about the effects of protein on energy intake and related gastrointestinal mechanisms and whether these differ between men and women is limited.Objective: We determined the effects of whey protein on energy intake, appetite, gastric emptying, and gut hormones in healthy older men and women.Design: Eight older women and 8 older men [mean ± SEM age: 72 ± 1 y; body mass index (in kg/m(2)): 25 ± 1] were studied on 3 occasions in which they received protein loads of 30 g (120 kcal) or 70 g (280 kcal) or a flavored water control drink (0 kcal)...
July 26, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28746065/percutaneous-electrical-neurostimulation-of-dermatome-t6-for-short-term-weight-loss-in-overweight-and-obese-patients-effect-on-ghrelin-levels-glucose-lipid-and-hormonal-profile
#17
Jaime Ruiz-Tovar, Carolina Llavero, Walter Smith
BACKGROUND: Percutaneous electrical neurostimulation of dermatome T6 (PENS T6), associated with a low-caloric diet, has previously demonstrated to achieve a reduction in the appetite perception, inducing a better compliance of the prescribed diet and finally leading to a greater weight loss. Ghrelin has been hypothesized to be implicated in the effect of PENS T6. The aim of this study was to evaluate the effect of PENS T6 with hypocaloric diet on appetite, weight loss and dietary compliance, and its association with plasma ghrelin levels, in comparison with PENS T6 associated with normocaloric diet, transcutaneous electrical neurostimulation of T11-T12 (placebo) with hypocaloric diet, and only hypocaloric diet...
August 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28739098/effects-of-bariatric-surgery-on-energy-homeostasis
#18
REVIEW
Wei Li, Denis Richard
Bariatric surgery represents the most efficient therapy for severe obesity. It reduces the size of fat stores or the amount of body fat gain. The bariatric surgery procedures currently used include Roux-en-Y gastric bypass and sleeve gastrectomy, which are the most commonly performed procedures. Other procedures are laparoscopic adjustable gastric banding and biliopancreatic diversion. The latter represents the most effective surgery for treatment of severe obesity as well as type 2 diabetes. Bariatric surgery reduces energy intake by restricting the size of the stomach reservoir and causing malabsorption, as in the case of biliopancreatic diversion...
August 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/28725257/study-protocol-an-investigation-of-mother-infant-signalling-during-breastfeeding-using-a-randomised-trial-to-test-the-effectiveness-of-breastfeeding-relaxation-therapy-on-maternal-psychological-state-breast-milk-production-and-infant-behaviour-and-growth
#19
N H M Shukri, J Wells, F Mukhtar, M H S Lee, M Fewtrell
BACKGROUND: The physiological and psychological signalling between mother and infant during lactation is one of the prominent mother-infant factors that may influence breastfeeding outcomes. The infant can 'signal' his needs through vocalisation, and the mother can respond by allowing or restricting nipple access, which might alter the breast milk composition or volume. This may lead to parent-offspring conflict during the lactation period. Challenging infant behaviour has also been associated with maternal psychological distress, which might affect breastfeeding performance...
2017: International Breastfeeding Journal
https://www.readbyqxmd.com/read/28715307/taking-on-the-obesity-epidemic-researchers-wage-a-big-fat-fight-in-efforts-to-combat-this-global-health-issue
#20
Leslie Mertz
If obesity were tied only to too much food or too little physical activity, the cure would be a simple matter of counting calories or keeping track of steps with a pedometer. Unfortunately, obesity is much more complex. Many other factors come into play, including so-called hunger genes that make a person more susceptible to obesity, infection with certain pathogens linked to weight gain, hormones that dampen or stimulate appetite, sleep disruption that can trigger overeating, and social networks that can promote obesity...
July 2017: IEEE Pulse
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