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McRae AN, Ticho AL, Liu Y, Ricardo-Silgado ML, Mangena NN, Jassir FF, Gonzalez-Izundegui D, Calderon G, Rohakhtar FR, Simon V, Li Y, Leggett C, Hurtado D, LaRusso N, Acosta AJ. Regulator of G-protein signaling expression in human intestinal enteroendocrine cells and potential role in satiety hormone secretion in health and obesity. EBioMedicine 2024; 107:105283. [PMID: 39142076 PMCID: PMC11367526 DOI: 10.1016/j.ebiom.2024.105283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/16/2024] Open
Abstract
BACKGROUND Gut L-type enteroendocrine cells (EECs) are intestinal chemosensory cells that secrete satiety hormones GLP-1 and PYY in response to activation of G-protein coupled receptors (GPCRs) by luminal components of nutrient digestion and microbial fermentation. Regulator of G-protein Signaling (RGS) proteins are negative regulators of GPCR signaling. The expression profile of RGS in EECs, and their potential role in satiety hormone secretion and obesity is unknown. METHODS Transcriptomic profiling of RGS was completed in native colonic EECs was completed using single-cell RNA sequencing (scRNA-Seq) in lean and obesity, and human jejunal EECs with data obtained from a publicly available RNAseq dataset (GSE114853). RGS validation studies were completed using whole mucosal intestinal tissue obtained during endoscopy in 61 patients (n = 42 OB, n = 19 Lean); a subset of patients' postprandial plasma was assayed for GLP-1 and PYY. Ex vivo human intestinal cultures and in vitro NCI-H716 cells overexpressing RGS9 were exposed to GLP-1 secretagogues in conjunction with a nonselective RGS-inhibitor and assayed for GLP-1 secretion. FINDINGS Transcriptomic profiling of colonic and jejunal enteroendocrine cells revealed a unique RGS expression profile in EECs, and further within GLP-1+ L-type EECs. In obesity the RGS expression profile was altered in colonic EECs. Human gut RGS9 expression correlated positively with BMI and negatively with postprandial GLP-1 and PYY. RGS inhibition in human intestinal cultures increased GLP-1 release from EECs ex vivo. NCI-H716 cells overexpressing RGS9 displayed defective nutrient-stimulated GLP-1 secretion. INTERPRETATION This study introduces the expression profile of RGS in human EECs, alterations in obesity, and suggests a role for RGS proteins as modulators of GLP-1 and PYY secretion from intestinal EECs. FUNDING AA is supported by the NIH(C-Sig P30DK84567, K23 DK114460), a Pilot Award from the Mayo Clinic Center for Biomedical Discovery, and a Translational Product Development Fund from The Mayo Clinic Center for Clinical and Translational Science Office of Translational Practice in partnership with the University of Minnesota Clinical and Translational Science Institute.
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Affiliation(s)
- Alison N McRae
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Alexander L Ticho
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Yuanhang Liu
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Maria Laura Ricardo-Silgado
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Nothando N Mangena
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Fauzi Feris Jassir
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Daniel Gonzalez-Izundegui
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Gerardo Calderon
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | | | - Vernadette Simon
- Center for Individualized Medicine (CIM), Mayo Clinic, Rochester, MN, USA
| | - Ying Li
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Cadman Leggett
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Daniela Hurtado
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition Mayo Clinic, Jacksonville, FL, USA
| | - Nicholas LaRusso
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Andres J Acosta
- Precision Medicine for Obesity Program and Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA.
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Jeczmien-Lazur JS, Sanetra AM, Pradel K, Izowit G, Chrobok L, Palus-Chramiec K, Piggins HD, Lewandowski MH. Metabolic cues impact non-oscillatory intergeniculate leaflet and ventral lateral geniculate nucleus: standard versus high-fat diet comparative study. J Physiol 2023; 601:979-1016. [PMID: 36661095 DOI: 10.1113/jp283757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/12/2023] [Indexed: 01/21/2023] Open
Abstract
The intergeniculate leaflet and ventral lateral geniculate nucleus (IGL/VLG) are subcortical structures involved in entrainment of the brain's circadian system to photic and non-photic (e.g. metabolic and arousal) cues. Both receive information about environmental light from photoreceptors, exhibit infra-slow oscillations (ISO) in vivo, and connect to the master circadian clock. Although current evidence demonstrates that the IGL/VLG communicate metabolic information and are crucial for entrainment of circadian rhythms to time-restricted feeding, their sensitivity to food intake-related peptides has not been investigated yet. We examined the effect of metabolically relevant peptides on the spontaneous activity of IGL/VLG neurons. Using ex vivo and in vivo electrophysiological recordings as well as in situ hybridisation, we tested potential sensitivity of the IGL/VLG to anorexigenic and orexigenic peptides, such as cholecystokinin, glucagon-like peptide 1, oxyntomodulin, peptide YY, orexin A and ghrelin. We explored neuronal responses to these drugs during day and night, and in standard vs. high-fat diet conditions. We found that IGL/VLG neurons responded to all the substances tested, except peptide YY. Moreover, more neurons responded to anorexigenic drugs at night, while a high-fat diet affected the IGL/VLG sensitivity to orexigenic peptides. Interestingly, ISO neurons responded to light and orexin A, but did not respond to the other food intake-related peptides. In contrast, non-ISO cells were activated by metabolic peptides, with only some being responsive to light. Our results show for the first time that peptides involved in the body's energy homeostasis stimulate the thalamus and suggest functional separation of the IGL/VLG cells. KEY POINTS: The intergeniculate leaflet and ventral lateral geniculate nucleus (IGL/VLG) of the rodent thalamus process various signals and participate in circadian entrainment. In both structures, cells exhibiting infra-slow oscillatory activity as well as non-rhythmically firing neurons being observed. Here, we reveal that only one of these two groups of cells responds to anorexigenic (cholecystokinin, glucagon-like peptide 1 and oxyntomodulin) and orexigenic (ghrelin and orexin A) peptides. Neuronal responses vary depending on the time of day (day vs. night) and on the diet (standard vs. high-fat diet). Additionally, we visualised receptors to the tested peptides in the IGL/VLG using in situ hybridisation. Our results suggest that two electrophysiologically different subpopulations of IGL/VLG neurons are involved in two separate functions: one related to the body's energy homeostasis and one associated with the subcortical visual system.
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Affiliation(s)
- Jagoda S Jeczmien-Lazur
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
| | - Anna M Sanetra
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
| | - Kamil Pradel
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
| | - Gabriela Izowit
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
| | - Lukasz Chrobok
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland.,School of Physiology, Pharmacology, and Neuroscience, Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - Katarzyna Palus-Chramiec
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
| | - Hugh D Piggins
- School of Physiology, Pharmacology, and Neuroscience, Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - Marian H Lewandowski
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Krakow, Poland
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Bioactive and Sensory Di- and Tripeptides Generated during Dry-Curing of Pork Meat. Int J Mol Sci 2023; 24:ijms24021574. [PMID: 36675084 PMCID: PMC9866438 DOI: 10.3390/ijms24021574] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Dry-cured pork products, such as dry-cured ham, undergo an extensive proteolysis during manufacturing process which determines the organoleptic properties of the final product. As a result of endogenous pork muscle endo- and exopeptidases, many medium- and short-chain peptides are released from muscle proteins. Many of them have been isolated, identified, and characterized, and some peptides have been reported to exert relevant bioactivity with potential benefit for human health. However, little attention has been given to di- and tripeptides, which are far less known, although they have received increasing attention in recent years due to their high potential relevance in terms of bioactivity and role in taste development. This review gathers the current knowledge about di- and tripeptides, regarding their bioactivity and sensory properties and focusing on their generation during long-term processing such as dry-cured pork meats.
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Calcaterra V, Rossi V, Mari A, Casini F, Bergamaschi F, Zuccotti GV, Fabiano V. Medical treatment of weight loss in children and adolescents with obesity. Pharmacol Res 2022; 185:106471. [PMID: 36174963 DOI: 10.1016/j.phrs.2022.106471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/16/2022] [Accepted: 09/23/2022] [Indexed: 12/01/2022]
Abstract
Obesity remains one of the biggest health problems both in adults and children. Lifestyle modification, including diet and exercise, continues to be the mainstay of obesity prevention and treatment. Unfortunately, lifestyle modifications are often unsuccessful. Pharmacological treatment of obesity in pediatric patients can be applied in selected cases, and not before evidence of failure of the multidisciplinary lifestyle intervention. In this narrative review, we revised the most up-to-date evidence on medical treatment of weight loss in children and adolescents with obesity, including FDA- or EMA-approved and -experimented, not approved, drugs for pediatric population. Multidisciplinary treatment of childhood obesity, regulation of appetite control, energy balance and body weight were also discussed, in order to clarify the indications and mechanism action of drugs. Despite a substantial number of medications used for the treatment of obesity in adults, a limited number of drugs are approved by the drug regulatory agencies for pediatric population. Further research is needed to evaluate the efficacy and safety of novel pharmacological approaches for treatment of pediatric obesity in order to optimize weight management for children and adolescents and limit the development obesity-related comorbidities.
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Affiliation(s)
- Valeria Calcaterra
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy; Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy
| | - Virginia Rossi
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy
| | - Alessandra Mari
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy
| | - Francesca Casini
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy
| | | | - Gian Vincenzo Zuccotti
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy; Department of Biomedical and Clinical Sciences, Università di Milano, 20122 Milan, Italy
| | - Valentina Fabiano
- Department of Pediatrics, Vittore Buzzi Children's Hospital, 20154 Milan, Italy; Department of Biomedical and Clinical Sciences, Università di Milano, 20122 Milan, Italy.
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Blood Acylated Ghrelin Concentrations in Healthy Term Newborns: A Prospective Cohort Study. Int J Pediatr 2022; 2022:9317425. [PMID: 35251188 PMCID: PMC8894044 DOI: 10.1155/2022/9317425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/16/2022] [Accepted: 02/07/2022] [Indexed: 11/25/2022] Open
Abstract
Objective The effect of ghrelin, a growth hormone (GH) secretagogue on growth of neonates, has been studied in the past, but not fully clarified. We aimed to investigate the relationship between ghrelin and growth parameters at birth and at the age of three months in healthy term infants. Methodology. This was a prospective observational study carried out in a tertiary care hospital. Eighty-four infants born at gestational ages between 37 and 42 weeks and classified as term small for gestational age (SGA) and appropriate for gestational age (AGA) were included in the study. Estimation of acylated ghrelin (AG) concentrations was done in the cord blood at birth and in venous blood at the age of 3 months in all the infants. The correlation between AG concentrations and growth parameters at birth and at 3 months was studied. Results AG concentrations were significantly higher in SGA (236.16 ± 152.4 pg/ml) than AGA neonates (59.45 ± 20.95 pg/ml) at birth. Concentrations were observed to be negatively correlated with birth weight (r = −0.34, p value 0.03), birth length, and head circumference (r = −0.509 and -0.376, respectively) in SGA neonates. However, at 3 months, AG concentrations did not correlate with changes in anthropometric parameters in both the groups. Conclusion Cord acylated ghrelin concentrations are higher in SGA neonates, and the concentrations are inversely proportional to the birth weight. Hence, its role as a surrogate marker for intrauterine nutrition can be suggested. However, its concentrations do not correlate with anthropometric parameters in early postnatal growth, suggesting it may not have a direct role in postnatal growth.
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Malczyk Ż, Roczniak W, Mazur B, Kwiecień J, Ziora K, Górska-Flak K, Oświęcimska J. Exocrine Pancreatic Function in Girls with Anorexia Nervosa. Nutrients 2021; 13:3280. [PMID: 34579156 PMCID: PMC8465751 DOI: 10.3390/nu13093280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/08/2021] [Accepted: 09/16/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To assess pancreatic exocrine function in patients with anorexia nervosa using a breath test with 13C-labeled mixed triglycerides (MTG-BT) and to determine the relationship between the test results and selected biochemical and hormonal parameters. MATERIAL AND METHODS Anthropometric measurements, biochemical and hormonal parameters (serum leptin, soluble leptin receptor (sLR), acylated and desacylated ghrelin, free leptin index (FLI)), and MTG-BT were performed in a group of 31 girls with the restrictive type of AN, as well as 38 healthy girls (C). RESULTS The average cumulative dose of 13C-triglycerides recovered with exhaled air (%CD) was similar in both study groups, while the average time from 13C-triglycerides administration to peak 13CO2 excretion in expired air (time to peak (TTP)) was significantly longer in patients with AN compared to C. In both groups, %CD correlated negatively with FLI. TTP correlated negatively with sLR and FLI in the AN and with serum insulin and HOMA-IR values in the C. CONCLUSIONS In girls with AN, the pancreatic efficiency of lipase secretion was found to be normal, while the kinetics of this enzyme secretion were disturbed. These changes may result from disorders in the functioning of the adipose-insular and islet-acinar axes.
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Affiliation(s)
- Żaneta Malczyk
- Chair and Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. 3 Maja 13/15, 41-800 Zabrze, Poland; (J.K.); (K.Z.)
| | - Wojciech Roczniak
- Institute of Medicine, Jan Grodek State University in Sanok, ul. Mickiewicza 21, 38-500 Sanok, Poland; (W.R.); (J.O.)
| | - Bogdan Mazur
- Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. Jordana 19, 41-808 Zabrze, Poland;
| | - Jarosław Kwiecień
- Chair and Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. 3 Maja 13/15, 41-800 Zabrze, Poland; (J.K.); (K.Z.)
| | - Katarzyna Ziora
- Chair and Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. 3 Maja 13/15, 41-800 Zabrze, Poland; (J.K.); (K.Z.)
| | - Karolina Górska-Flak
- Department of Pediatrics, Institute of Medicine, University of Opole, Al. Wincentego Witosa 26, 45-401 Opole, Poland;
| | - Joanna Oświęcimska
- Institute of Medicine, Jan Grodek State University in Sanok, ul. Mickiewicza 21, 38-500 Sanok, Poland; (W.R.); (J.O.)
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Smith KR, Moran TH. Gastrointestinal peptides in eating-related disorders. Physiol Behav 2021; 238:113456. [PMID: 33989649 PMCID: PMC8462672 DOI: 10.1016/j.physbeh.2021.113456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/19/2021] [Accepted: 05/04/2021] [Indexed: 12/13/2022]
Abstract
Food intake is tightly controlled by homeostatic signals sensitive to metabolic need for the regulation of body weight. This review focuses on the peripherally-secreted gastrointestinal peptides (i.e., ghrelin, cholecystokinin, glucagon-like peptide 1, and peptide tyrosine tyrosine) that contribute to the control of appetite and discusses how these peptides or the signals arising from their release are disrupted in eating-related disorders across the weight spectrum, namely anorexia nervosa, bulimia nervosa, and obesity, and whether they are normalized following weight restoration or weight loss treatment. Further, the role of gut peptides in the pathogenesis and treatment response in human weight conditions as identified by rodent models are discussed. Lastly, we review the incretin- and hormone-based pharmacotherapies available for the treatment of obesity and eating-related disorders.
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Affiliation(s)
- Kimberly R Smith
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, United States.
| | - Timothy H Moran
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, United States
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Becker KR, Mancuso C, Dreier MJ, Asanza E, Breithaupt L, Slattery M, Plessow F, Micali N, Thomas JJ, Eddy KT, Misra M, Lawson EA. Ghrelin and PYY in low-weight females with avoidant/restrictive food intake disorder compared to anorexia nervosa and healthy controls. Psychoneuroendocrinology 2021; 129:105243. [PMID: 34049199 PMCID: PMC8363304 DOI: 10.1016/j.psyneuen.2021.105243] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Avoidant/restrictive food intake disorder (ARFID) is characterized by restrictive eating and failure to meet nutritional needs but is distinct from anorexia nervosa (AN) because restriction is not motivated by weight/shape concerns. We examined levels of orexigenic ghrelin and anorexigenic peptide YY (PYY) in young females with ARFID, AN and healthy controls (HC). METHODS 94 females (22 low-weight ARFID, 40 typical/atypical AN, and 32 HC ages 10-22 years) underwent fasting blood draws for total ghrelin and total PYY. A subset also provided blood 30, 60 and 120 min after a standardized meal. RESULTS Females with ARFID ate less than those with AN or HC (ps<0.012); were younger (14.4 ± 3.2 years) than those with AN (18.9 ± 3.1 years) and HC (17.4 ± 3.1 years) (ps<0.003) and at a lower Tanner stage (3.1 ± 1.5) than AN (4.5 ± 1.1;) and HC (4.4 ± 1.1; ps<0.005), but did not differ in BMI percentiles or BMI Z-scores from AN (ps>0.44). Fasting and postprandial ghrelin were lower in ARFID versus AN (ps≤.015), but not HC (ps≥0.62). Fasting and postprandial PYY did not differ between ARFID versus AN or HC (ps≥0.13); ARFID did not demonstrate the sustained high PYY levels post-meal observed in those with AN and HC. Secondary analyses controlling age or Tanner stage and calories consumed showed similar results. Exploratory analyses suggest that the timing of the PYY peak in ARFID is earlier than HC, showing a peak PYY level 30 min post-meal (p = .037). CONCLUSIONS ARFID and AN appear to have distinct patterns of secretion of gut-derived appetite-regulating hormones that may aid in differential diagnosis and provide new treatment targets.
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Affiliation(s)
- Kendra R Becker
- Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, United States of America; Department of Psychiatry, Harvard Medical School, Boston, MA, United States of America.
| | - Christopher Mancuso
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America
| | - Melissa J Dreier
- Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, United States of America
| | - Elisa Asanza
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America
| | - Lauren Breithaupt
- Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, United States of America; Department of Psychiatry, Harvard Medical School, Boston, MA, United States of America
| | - Meghan Slattery
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America
| | - Franziska Plessow
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America; Department of Medicine, Harvard Medical School, Boston, MA, United States of America
| | - Nadia Micali
- Department of Psychiatry, University of Geneva, Switzerland; Department of Pediatrics Gynecology and Obstetrics, University of Geneva, Switzerland; GOSH Institute of Child Health, University College London, United Kingdom
| | - Jennifer J Thomas
- Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, United States of America; Department of Psychiatry, Harvard Medical School, Boston, MA, United States of America
| | - Kamryn T Eddy
- Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, United States of America; Department of Psychiatry, Harvard Medical School, Boston, MA, United States of America
| | - Madhusmita Misra
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America; Division of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA, United States of America; Department of Pediatrics, Harvard Medical School, Boston, MA, United States of America
| | - Elizabeth A Lawson
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, United States of America; Department of Medicine, Harvard Medical School, Boston, MA, United States of America
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Vlaardingerbroek H, van den Akker ELT, Hokken-Koelega ACS. Appetite- and weight-inducing and -inhibiting neuroendocrine factors in Prader-Willi syndrome, Bardet-Biedl syndrome and craniopharyngioma versus anorexia nervosa. Endocr Connect 2021; 10:R175-R188. [PMID: 33884958 PMCID: PMC8183618 DOI: 10.1530/ec-21-0111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 04/22/2021] [Indexed: 12/15/2022]
Abstract
Obesity is reaching an epidemic state and has a major impact on health and economy. In most cases, obesity is caused by lifestyle factors. However, the risk of becoming obese differs highly between people. Individual's differences in lifestyle, genetic, and neuroendocrine factors play a role in satiety, hunger and regulation of body weight. In a small percentage of children and adults with obesity, an underlying hormonal or genetic cause can be found. The aim of this review is to present and compare data on the extreme ends of the obesity and undernutrition spectrum in patients with Prader-Willi syndrome (PWS), Bardet-Biedl syndrome (BBS), acquired hypothalamic obesity in craniopharyngioma patients, and anorexia nervosa. This may give more insight into the role of neuroendocrine factors and might give direction for future research in conditions of severe obesity and underweight.
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Affiliation(s)
- H Vlaardingerbroek
- Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands
- Willem-Alexander Children’s Hospital, Department of Pediatrics, Division of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
- Correspondence should be addressed to H Vlaardingerbroek:
| | - E L T van den Akker
- Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands
| | - A C S Hokken-Koelega
- Department of Pediatrics, Subdivision of Endocrinology, Erasmus University Medical Center-Sophia Children’s Hospital, Rotterdam, The Netherlands
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Mazzawi T, El-Salhy M, Lied GA, Hausken T. The Effects of Fecal Microbiota Transplantation on the Symptoms and the Duodenal Neurogenin 3, Musashi 1, and Enteroendocrine Cells in Patients With Diarrhea-Predominant Irritable Bowel Syndrome. Front Cell Infect Microbiol 2021; 11:524851. [PMID: 34055657 PMCID: PMC8149964 DOI: 10.3389/fcimb.2021.524851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 04/23/2021] [Indexed: 12/12/2022] Open
Abstract
Introduction Interactions between the gut microbiota and enteroendocrine cells play important role in irritable bowel syndrome (IBS). Reduced stem cell densities and their differentiation into enteroendocrine cells may cause abnormal densities of the duodenal enteroendocrine cells in IBS patients. Materials and Methods We aimed to investigate the effects of fecal microbiota transplantation (FMT) on stem cell differentiation into enteroendocrine cells as detected by neurogenin 3, stem cells as detected by Musashi 1, and the enteroendocrine cells in the duodenum of IBS patients. The study included 16 IBS patients according to Rome III criteria. Four patients were excluded. The remaining patients (n = 12, four females and eight males) were divided according to the cause of IBS into post-infectious (n = 6) and idiopathic (n = 6) IBS. They completed the following questionnaires before and 3 weeks after FMT: IBS-Symptom Severity Scoring system (IBS-SSS) and IBS-Symptom Questionnaire (IBS-SQ). Feces donated by healthy relatives of the patients were transplanted via gastroscope. Biopsies were taken from the descending part of the duodenum at baseline and 3 weeks after FMT. They were immunostained for neurogenin 3, Musashi 1, and all types of duodenal enteroendocrine cells and quantified by computerized image analysis. Microbiota analyses of feces collected just before and 3 weeks after FMT were performed using GA-map™ Dysbiosis test (Genetic Analysis AS, Oslo, Norway). Results The total scores for IBS-SSS and IBS-SQ were significantly improved 3 weeks after receiving FMT, P = 0.0009 and <0.0001, respectively. The stem cell densities of neurogenin 3 increased significantly following FMT (P = 0.0006) but not for Musashi 1 (P = 0.42). The cell densities of chromogranin A, cholecystokinin, gastric inhibitory peptide, serotonin, and somatostatin, but not for secretin, have significantly changed in both IBS groups after 3 weeks from receiving FMT. Conclusion More than two-thirds of IBS patients experienced improvement in their symptoms parallel to changes in the enteroendocrine cells densities 3 weeks after FMT. The changes in the enteroendocrine cell densities do not appear to be caused by changes in the stem cells or their early progenitors rather by changes in the differentiation progeny as detected by neurogenin 3. The study was retrospectively registered at ClinicalTrials.gov (ID: NCT03333291). Clinical Trial Registration ClinicalTrials.gov, identifier NCT03333291.
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Affiliation(s)
- Tarek Mazzawi
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, Bergen, Norway
- National Center for Functional Gastrointestinal Disorders, Division of Gastroenterology, Haukeland University Hospital, Bergen, Norway
- Center for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Magdy El-Salhy
- National Center for Functional Gastrointestinal Disorders, Division of Gastroenterology, Haukeland University Hospital, Bergen, Norway
- Center for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Division of Gastroenterology, Department of Medicine, Stord Hospital, Helse-Fonna, Stord, Norway
| | - Gülen Arslan Lied
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, Bergen, Norway
- National Center for Functional Gastrointestinal Disorders, Division of Gastroenterology, Haukeland University Hospital, Bergen, Norway
- Center for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Trygve Hausken
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, Bergen, Norway
- National Center for Functional Gastrointestinal Disorders, Division of Gastroenterology, Haukeland University Hospital, Bergen, Norway
- Center for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen, Norway
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11
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Schalla MA, Taché Y, Stengel A. Neuroendocrine Peptides of the Gut and Their Role in the Regulation of Food Intake. Compr Physiol 2021; 11:1679-1730. [PMID: 33792904 DOI: 10.1002/cphy.c200007] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The regulation of food intake encompasses complex interplays between the gut and the brain. Among them, the gastrointestinal tract releases different peptides that communicate the metabolic state to specific nuclei in the hindbrain and the hypothalamus. The present overview gives emphasis on seven peptides that are produced by and secreted from specialized enteroendocrine cells along the gastrointestinal tract in relation with the nutritional status. These established modulators of feeding are ghrelin and nesfatin-1 secreted from gastric X/A-like cells, cholecystokinin (CCK) secreted from duodenal I-cells, glucagon-like peptide 1 (GLP-1), oxyntomodulin, and peptide YY (PYY) secreted from intestinal L-cells and uroguanylin (UGN) released from enterochromaffin (EC) cells. © 2021 American Physiological Society. Compr Physiol 11:1679-1730, 2021.
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Affiliation(s)
- Martha A Schalla
- Charité Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Yvette Taché
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, CURE: Digestive Diseases Research Center, David Geffen School of Medicine, UCLA, Los Angeles, California, USA.,VA Greater Los Angeles Healthcare System, Los Angeles, California, USA
| | - Andreas Stengel
- Charité Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Department of Psychosomatic Medicine and Psychotherapy, Medical University Hospital Tübingen, Tübingen, Germany
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12
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Yunker AG, Luo S, Jones S, Dorton HM, Alves JM, Angelo B, DeFendis A, Pickering TA, Monterosso JR, Page KA. Appetite-Regulating Hormones Are Reduced After Oral Sucrose vs Glucose: Influence of Obesity, Insulin Resistance, and Sex. J Clin Endocrinol Metab 2021; 106:654-664. [PMID: 33300990 PMCID: PMC7947782 DOI: 10.1210/clinem/dgaa865] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Fructose compared to glucose has adverse effects on metabolic function, but endocrine responses to oral sucrose vs glucose is not well understood. OBJECTIVE We investigated how oral sucrose vs glucose affected appetite-regulating hormones, and how biological factors (body mass index [BMI], insulin sensitivity, sex) influence endocrine responses to these 2 types of sugar. DESIGN Sixty-nine adults (29 men; 23.22 ± 3.74 years; BMI 27.03 ± 4.96 kg/m2) completed the study. On 2 occasions, participants consumed 300-mL drinks containing 75 g of glucose or sucrose. Blood was sampled at baseline, 10, 35, and 120 minutes post drink for plasma glucose, insulin, glucagon-like peptide (GLP-1)(7-36), peptide YY (PYY)total, and acyl-ghrelin measures. Hormone levels were compared between conditions using a linear mixed model. Interaction models were performed, and results were stratified to assess how biological factors influence endocrine responses. RESULTS Sucrose vs glucose ingestion provoked a less robust rise in glucose (P < .001), insulin (P < .001), GLP-1 (P < .001), and PYY (P = .02), whereas acyl-ghrelin suppression was similar between the sugars. We found BMI status by sugar interactions for glucose (P = .01) and PYY (P = .03); obese individuals had smaller increases in glucose and PYY levels after consuming sucrose vs glucose. There were interactions between insulin sensitivity and sugar for glucose (P = .003) and insulin (P = .04), and a sex by sugar interaction for GLP-1 (P = .01); men demonstrated smaller increases in GLP-1 in response to oral sucrose vs glucose. CONCLUSION Sucrose is less efficient at signaling postprandial satiation than glucose, and biological factors influence differential hormone responses to sucrose vs glucose consumption.
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Affiliation(s)
- Alexandra G Yunker
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Shan Luo
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Department of Psychology, University of Southern California, Los Angeles, California, USA
| | - Sabrina Jones
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Hilary M Dorton
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, California, USA
| | - Jasmin M Alves
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Brendan Angelo
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Alexis DeFendis
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Trevor A Pickering
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - John R Monterosso
- Department of Psychology, University of Southern California, Los Angeles, California, USA
- Neuroscience Graduate Program, University of Southern California, Los Angeles, California, USA
| | - Kathleen A Page
- Division of Endocrinology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Diabetes and Obesity Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Correspondence and Reprint Requests: Kathleen A. Page, MD, USC Keck School of Medicine, Division of Endocrinology, Diabetes and Obesity Research Institute, 2250 Alcazar St, CSC 209, Los Angeles, CA 90089, USA. E-mail:
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13
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Thom G, McIntosh A, Messow CM, Leslie WS, Barnes AC, Brosnahan N, McCombie L, Malkova D, Al-Mrabeh A, Zhyzhneuskaya S, Welsh P, Sattar N, Taylor R, Lean MEJ. Weight loss-induced increase in fasting ghrelin concentration is a predictor of weight regain: Evidence from the Diabetes Remission Clinical Trial (DiRECT). Diabetes Obes Metab 2021; 23:711-719. [PMID: 33289256 DOI: 10.1111/dom.14274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/22/2020] [Accepted: 11/26/2020] [Indexed: 01/08/2023]
Abstract
AIM To investigate whether appetite-related hormones were predictors of weight regain in the Diabetes Remission Clinical Trial (DiRECT). MATERIALS AND METHODS DiRECT is a cluster-randomized clinical trial, designed to assess the effect of weight loss on type 2 diabetes remission. For this post hoc analysis, data were available for 253 (147 interventions, 106 controls) individuals with type 2 diabetes (age 53.6 ± 7.5 years, body mass index 34.7 ± 4.4 kg/m2 , 59% men). Intervention participants received a 24-month weight management programme, and controls remained on usual diabetes care. Fasting plasma concentrations of leptin, ghrelin, glucagon-like peptide-1 and peptide YY were measured at baseline, 12 months and 24 months in all participants, and at 5 months in a subset of participants in the intervention (n = 56) and control groups (n = 22). Potential predictors were examined using multivariable linear regression models. RESULTS The intervention group lost 14.3 ± 6.0% body weight at 5 months but regained weight over time, with weight losses of 10.0 ± 7.5% at 12 months and 7.6 ± 6.3% at 24 months. Weight loss in controls was 1.1 ± 3.7% and 2.1 ± 5.0% at 12 and 24 months, respectively. Body weight increased by 2.3% (95% confidence interval [CI] 0.4, 4.1; P = 0.019) between 12 and 24 months for every 1-ng/mL increase in ghrelin between baseline and 12 months, and weight regain between 12 and 24 months was increased by 1.1% (95% CI 0.2, 2.0; P = 0.023) body weight for every 1-ng/mL increase in ghrelin at 12 months. CONCLUSION The rise in ghrelin (but not any other measured hormone) during diet-induced weight loss was a predictor of weight regain during follow-up, and concentrations remained elevated over time, suggesting a small but significant compensatory drive to regain weight. Attenuating the effects of ghrelin may improve weight-loss maintenance.
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Affiliation(s)
- George Thom
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
| | - Alasdair McIntosh
- Robertson Centre for Biostatistics, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Claudia-Martina Messow
- Robertson Centre for Biostatistics, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Wilma S Leslie
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
| | - Alison C Barnes
- Human Nutrition Research Centre, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Naomi Brosnahan
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
| | - Louise McCombie
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
| | - Dalia Malkova
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
| | - Ahmad Al-Mrabeh
- Newcastle Magnetic Resonance Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Sviatlana Zhyzhneuskaya
- Newcastle Magnetic Resonance Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Paul Welsh
- Institute of Cardiovascular and Medical Science, University of Glasgow, Glasgow, UK
| | - Naveed Sattar
- Institute of Cardiovascular and Medical Science, University of Glasgow, Glasgow, UK
| | - Roy Taylor
- Newcastle Magnetic Resonance Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Michael E J Lean
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Glasgow, UK
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14
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Nunez‐Salces M, Li H, Feinle‐Bisset C, Young RL, Page AJ. The regulation of gastric ghrelin secretion. Acta Physiol (Oxf) 2021; 231:e13588. [PMID: 33249751 DOI: 10.1111/apha.13588] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022]
Abstract
Ghrelin is a gastric hormone with multiple physiological functions, including the stimulation of food intake and adiposity. It is well established that circulating ghrelin levels are closely associated with feeding patterns, rising strongly before a meal and lowering upon food intake. However, the mechanisms underlying the modulation of ghrelin secretion are not fully understood. The purpose of this review is to discuss current knowledge on the circadian oscillation of circulating ghrelin levels, the neural mechanisms stimulating fasting ghrelin levels and peripheral mechanisms modulating postprandial ghrelin levels. Furthermore, the therapeutic potential of targeting the ghrelin pathway is discussed in the context of the treatment of various metabolic disorders, including obesity, type 2 diabetes, diabetic gastroparesis and Prader-Willi syndrome. Moreover, eating disorders including anorexia nervosa, bulimia nervosa and binge-eating disorder are also discussed.
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Affiliation(s)
- Maria Nunez‐Salces
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
| | - Hui Li
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
| | - Christine Feinle‐Bisset
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
| | - Richard L. Young
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
- Intestinal Nutrient Sensing Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
| | - Amanda J. Page
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
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15
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Seidel M, Markmann Jensen S, Healy D, Dureja A, Watson HJ, Holst B, Bulik CM, Sjögren JM. A Systematic Review and Meta-Analysis Finds Increased Blood Levels of All Forms of Ghrelin in Both Restricting and Binge-Eating/Purging Subtypes of Anorexia Nervosa. Nutrients 2021; 13:nu13020709. [PMID: 33672297 PMCID: PMC7926807 DOI: 10.3390/nu13020709] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 12/16/2022] Open
Abstract
Anorexia nervosa (AN) is a severe psychiatric condition associated with high mortality and chronicity. The hunt for state, trait, subtyping, and prognostic biomarkers is ongoing and the orexigenic hormone ghrelin and its different forms, acyl ghrelin and desacyl ghrelin, have been proposed to be increased in AN, especially in the restrictive subtype. A systematic literature search was performed using established databases up to 30 November 2020. Forty-nine studies met inclusion criteria for cross-sectional and longitudinal meta-analyses on total ghrelin, acyl ghrelin, and desacyl ghrelin. All forms of ghrelin were increased in the acute stage of anorexia nervosa during fasting compared to healthy controls. Previous notions on differences in ghrelin levels between AN subtypes were not supported by current data. In addition, a significant decrease in total ghrelin was observed pre-treatment to follow-up. However, total ghrelin levels at follow-up were still marginally elevated compared to healthy controls, whereas for acyl ghrelin, no overall effect of treatment was observed. Due to heterogeneity in follow-up designs and only few data on long-term recovered patients, longitudinal results should be interpreted with caution. While the first steps towards a biomarker in acute AN have been completed, the value of ghrelin as a potential indicator of treatment success or recovery status or its use in subtype differentiation are yet to be established.
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Affiliation(s)
- Maria Seidel
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, 171 65 Solna, Sweden; (M.S.); (C.M.B.)
- Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, 1099 Dresden, Germany
| | - Signe Markmann Jensen
- Research Unit Eating Disorders, Psychiatric Center Ballerup, Maglevænget 32, 2750 Ballerup, Denmark; (S.M.J.); (D.H.); (A.D.)
| | - Darren Healy
- Research Unit Eating Disorders, Psychiatric Center Ballerup, Maglevænget 32, 2750 Ballerup, Denmark; (S.M.J.); (D.H.); (A.D.)
| | - Aakriti Dureja
- Research Unit Eating Disorders, Psychiatric Center Ballerup, Maglevænget 32, 2750 Ballerup, Denmark; (S.M.J.); (D.H.); (A.D.)
| | - Hunna J. Watson
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
- School of Psychology, Curtin University, Perth U1987, Australia
- Division of Paediatrics, University of Western Australia, Perth 6907, Australia
| | - Birgitte Holst
- Department of Biomedical Sciences, University of Copenhagen, 1353 Copenhagen, Denmark;
| | - Cynthia M. Bulik
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, 171 65 Solna, Sweden; (M.S.); (C.M.B.)
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jan Magnus Sjögren
- Research Unit Eating Disorders, Psychiatric Center Ballerup, Maglevænget 32, 2750 Ballerup, Denmark; (S.M.J.); (D.H.); (A.D.)
- Department of Clinical Medicine, University of Copenhagen, 2200 N Copenhagen, Denmark
- Correspondence:
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16
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Tyszkiewicz-Nwafor M, Jowik K, Dutkiewicz A, Krasinska A, Pytlinska N, Dmitrzak-Weglarz M, Suminska M, Pruciak A, Skowronska B, Slopien A. Neuropeptide Y and Peptide YY in Association with Depressive Symptoms and Eating Behaviours in Adolescents across the Weight Spectrum: From Anorexia Nervosa to Obesity. Nutrients 2021; 13:nu13020598. [PMID: 33670342 PMCID: PMC7917982 DOI: 10.3390/nu13020598] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 12/28/2022] Open
Abstract
Neuropeptide Y (NPY) and peptide YY (PYY) are involved in metabolic regulation. The purpose of the study was to assess the serum levels of NPY and PYY in adolescents with anorexia nervosa (AN) or obesity (OB), as well as in a healthy control group (CG). The effects of potential confounders on their concentrations were also analysed. Eighty-nine adolescents were included in this study (AN = 30, OB = 30, and CG = 29). Anthropometric measurements and psychometric assessment of depressive symptoms, eating behaviours, body attitudes, and fasting serum levels of NPY and PYY were analysed. The AN group presented severe depressive symptoms, while the OB group held different attitudes towards the body. The levels of NPY were lower in the AN and OB groups as compared with the CG. The PYY levels were higher in the OB group than in the AN group and the CG. The severity of eating disorder symptoms predicted fasting serum concentrations of NPY. Lower levels of NPY in AN, as well as in OB suggests the need to look for a common link in the mechanism of this effect. Higher level of PYY in OB may be important in explaining complex etiopathogenesis of the disease. The psychopathological symptoms may have an influence on the neurohormones regulating metabolism.
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Affiliation(s)
- Marta Tyszkiewicz-Nwafor
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (K.J.); (A.D.); (N.P.); (A.S.)
- Correspondence:
| | - Katarzyna Jowik
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (K.J.); (A.D.); (N.P.); (A.S.)
| | - Agata Dutkiewicz
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (K.J.); (A.D.); (N.P.); (A.S.)
| | - Agata Krasinska
- Department of Pediatric Diabetes and Obesity, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.K.); (M.S.); (B.S.)
| | - Natalia Pytlinska
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (K.J.); (A.D.); (N.P.); (A.S.)
| | - Monika Dmitrzak-Weglarz
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland;
| | - Marta Suminska
- Department of Pediatric Diabetes and Obesity, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.K.); (M.S.); (B.S.)
| | - Agata Pruciak
- Institute of Plant Protection—National Research Institute, Research Centre of Quarantine, Invasive and Genetically Modified Organisms, 60-318 Poznan, Poland;
| | - Bogda Skowronska
- Department of Pediatric Diabetes and Obesity, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.K.); (M.S.); (B.S.)
| | - Agnieszka Slopien
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (K.J.); (A.D.); (N.P.); (A.S.)
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17
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Role of Neuroendocrine, Immune, and Autonomic Nervous System in Anorexia Nervosa-Linked Cardiovascular Diseases. Int J Mol Sci 2020; 21:ijms21197302. [PMID: 33023273 PMCID: PMC7582625 DOI: 10.3390/ijms21197302] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 12/19/2022] Open
Abstract
Anorexia nervosa represents a severe mental disorder associated with food avoidance and malnutrition. In patients suffering from anorexia nervosa, cardiovascular complications are the main reason leading to morbidity and mortality. However, the origin and pathological mechanisms leading to higher cardiovascular risk in anorexia nervosa are still unclear. In this aspect, the issue of exact pathological mechanisms as well as sensitive biomarkers for detection of anorexia nervosa-linked cardiovascular risk are discussed. Therefore, this review synthesised recent evidence of dysfunction in multiple neuroendocrine axes and alterations in the immune system that may represent anorexia nervosa-linked pathological mechanisms contributing to complex cardiovascular dysregulation. Further, this review is focused on identification of non-invasive biomarkers for the assessment of increased cardiovascular risk in anorexia nervosa that can be linked to a clinical application. Complex non-invasive assessment of cardiovascular autonomic regulation—cardiac vagal control (heart rate variability), sympathetic vascular activity (blood pressure variability), and cardiovascular reflex control (baroreflex sensitivity)—could represent a promising tool for early diagnosis, personalized therapy, and monitoring of therapeutic interventions in anorexia nervosa particularly at a vulnerable adolescent age.
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18
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Ling Y, Galusca B, Martin FP, Bartova S, Carayol J, Moco S, Epelbaum J, Grouselle D, Boirie Y, Montaurier C, Cuenco J, Minnion JS, Thomas T, Mure S, Hager J, Estour B, Gheldof N, Germain N. Resistance to lean mass gain in constitutional thinness in free-living conditions is not overpassed by overfeeding. J Cachexia Sarcopenia Muscle 2020; 11:1187-1199. [PMID: 32274897 PMCID: PMC7567161 DOI: 10.1002/jcsm.12572] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 02/10/2020] [Accepted: 02/25/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Constitutional thinness (CT), a non-malnourished underweight state with no eating disorders, is characterized by weight gain resistance to high fat diet. Data issued from muscle biopsies suggested blunted anabolic mechanisms in free-living state. Weight and metabolic responses to protein caloric supplementation has not been yet explored in CT. METHODS A 2 week overfeeding (additional 600 kcal, 30 g protein, 72 g carbohydrate, and 21 g fat) was performed to compare two groups of CTs (12 women and 11 men) to normal-weight controls (12 women and 10 men). Bodyweight, food intake, energy expenditure, body composition, nitrogen balance, appetite hormones profiles, and urine metabolome were monitored before and after overfeeding. RESULTS Before overfeeding, positive energy gap was found in both CT genders (309 ± 370 kcal in CT-F and 332 ± 709 kcal in CT-M) associated with higher relative protein intake per kilo (1.74 ± 0.32 g/kg/day in CT-F vs. 1.16 ± 0.23 in C-F, P < 0.0001; 1.56 ± 0.36 in CT-M vs. 1.22 ± 0.32 in C-M, P = 0.03), lower nitrogen (7.26 ± 2.36 g/day in CT-F vs. 11.41 ± 3.64 in C-F, P = 0.003; 9.70 ± 3.85 in CT-M vs. 14.14 ± 4.19 in C-M, P = 0.02), but higher essential amino acids urinary excretion (CT/C fold change of 1.13 for leucine and 1.14 for arginine) in free-living conditions. After overfeeding, CTs presented an accentuated positive energy gap, still higher than in controls (675 ± 540 in CTs vs. 379 ± 427 in C, P = 0.04). Increase in lean mass was induced in both controls genders but not in CTs (a trend was noticed in CT women), despite a similar nitrogen balance after overfeeding (5.06 ± 4.33 g/day in CTs vs. 4.28 ± 3.15 in controls, P = 0.49). Higher anorectic gut hormones' tone, glucagon-like peptide 1 and peptide tyrosine tyrosine, during test meal and higher snacking frequency were noticed before and after overfeeding in CTs. CONCLUSIONS The blunted muscle energy mechanism, previously described in CTs in free-living state, is associated with basal saturated protein turn over suggested by the concordance of positive nitrogen balance and an increased urine excretion of several essential amino acids. This saturation cannot be overpassed by increasing this spontaneous high-protein intake suggesting a resistance to lean mass gain in CT phenotype.
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Affiliation(s)
- Yiin Ling
- Division of Endocrinology, CHU Saint-Etienne, Saint-Etienne, France.,Eating Disorders, Addictions & Extreme Bodyweight Research Group, Jean Monnet University, Saint-Etienne, France
| | - Bogdan Galusca
- Division of Endocrinology, CHU Saint-Etienne, Saint-Etienne, France.,Eating Disorders, Addictions & Extreme Bodyweight Research Group, Jean Monnet University, Saint-Etienne, France
| | | | - Simona Bartova
- Metabolic Health, Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Jérôme Carayol
- Metabolic Health, Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Sofia Moco
- Metabolic Health, Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Jacques Epelbaum
- Psychiatry and Neurosciences Center, Paris Descartes University, INSERM UMR 894, Paris, France
| | - Dominique Grouselle
- Psychiatry and Neurosciences Center, Paris Descartes University, INSERM UMR 894, Paris, France
| | - Yves Boirie
- Human Nutrition Unit, INRA, Research Center, UMR 1019, Clermont-Ferrand, France
| | | | - Joyceline Cuenco
- Division of Diabetes, Endocrinology and Metabolism, Imperial College, London, UK
| | - James S Minnion
- Division of Diabetes, Endocrinology and Metabolism, Imperial College, London, UK
| | - Thierry Thomas
- Rheumatology Department, CHU Saint-Etienne, Saint-Etienne, France
| | - Sylvie Mure
- Division of Endocrinology, CHU Saint-Etienne, Saint-Etienne, France
| | - Jörg Hager
- Metabolic Health, Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Bruno Estour
- Division of Endocrinology, CHU Saint-Etienne, Saint-Etienne, France.,Eating Disorders, Addictions & Extreme Bodyweight Research Group, Jean Monnet University, Saint-Etienne, France
| | - Nele Gheldof
- Metabolic Health, Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Natacha Germain
- Division of Endocrinology, CHU Saint-Etienne, Saint-Etienne, France.,Eating Disorders, Addictions & Extreme Bodyweight Research Group, Jean Monnet University, Saint-Etienne, France
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Thom G, Dombrowski SU, Brosnahan N, Algindan YY, Lopez-Gonzalez MR, Roditi G, Lean MEJ, Malkova D. Response to comments on “The role of appetite-related hormones, adaptive thermogenesis, perceived hunger and stress in long-term weight-loss maintenance: a mixed methods study”. Eur J Clin Nutr 2020; 74:1115-1116. [DOI: 10.1038/s41430-020-0651-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/21/2020] [Accepted: 04/23/2020] [Indexed: 11/09/2022]
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Peptide YY 3-36 concentration in acute- and long-term recovered anorexia nervosa. Eur J Nutr 2020; 59:3791-3799. [PMID: 32166384 PMCID: PMC7669786 DOI: 10.1007/s00394-020-02210-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 02/18/2020] [Indexed: 12/15/2022]
Abstract
Purpose The gut–brain axis could be a possible key factor in the pathophysiology of anorexia nervosa. The neuropeptide peptide YY3–36, secreted by endocrine L cells of the gastrointestinal tract, is a known regulator of appetite and food intake. The objective of this study was to investigate peptide YY3–36 plasma concentrations at different stages of anorexia nervosa in a combined cross-sectional and longitudinal design to differentiate between effects of acute undernutrition and more enduring characteristics. Methods We measured fasting plasma peptide YY3–36 concentrations in young patients with acute anorexia nervosa (n = 47) and long-term recovered patients (n = 35) cross-sectionally in comparison to healthy control participants (n = 58), and longitudinally over the course of inpatient treatment. Physical activity was controlled as it may modulate peptide YY secretion. Results There was no group difference in peptide YY3–36 concentration among young acutely underweight anorexia nervosa patients, long-term recovered anorexia nervosa patients, and healthy control participants. Longitudinally, there was no change in peptide YY3–36 concentration after short-term weight rehabilitation. For acute anorexia nervosa patients at admission to treatment, there was a negative correlation between peptide YY3–36 concentration and body mass index. Conclusions The current study provides additional evidence for a normal basal PYY3–36 concentration in AN. Future studies should study multiple appetite-regulating peptides and their complex interplay and also use research designs including a food challenge. Electronic supplementary material The online version of this article (10.1007/s00394-020-02210-7) contains supplementary material, which is available to authorized users.
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21
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Mancuso C, Izquierdo A, Slattery M, Becker KR, Plessow F, Thomas JJ, Eddy KT, Lawson EA, Misra M. Changes in appetite-regulating hormones following food intake are associated with changes in reported appetite and a measure of hedonic eating in girls and young women with anorexia nervosa. Psychoneuroendocrinology 2020; 113:104556. [PMID: 31918391 PMCID: PMC7080573 DOI: 10.1016/j.psyneuen.2019.104556] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 11/11/2019] [Accepted: 12/13/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Females with anorexia nervosa (AN) have higher ghrelin and peptide YY (PYY) and lower brain-derived neurotropic factor (BDNF) levels than controls, and differ in their perception of hunger cues. Studies have not examined appetite-regulating hormones in the context of homeostatic and hedonic appetite in AN. OBJECTIVE To examine whether alterations in appetite-regulating hormones following a standardized meal are associated with homeostatic and hedonic appetite in young females with AN vs. controls. METHODS 68 females (36 AN, 32 controls) 10-22 years old were enrolled. Ghrelin, PYY and BDNF levels were assessed before, and 30, 60 and 120 min following a 400-kilocalorie standardized breakfast. Visual Analog Scales (VAS) assessing prospective food consumption, hunger, satiety, and hedonic appetite were administered before and 20 min after breakfast. A Cookie Taste Test (CTT) was conducted after a snack as a measure of hedonic eating behavior ∼3 h after breakfast. RESULTS AN had higher fasting ghrelin and PYY, and lower fasting BDNF (p = 0.001, 0.002 and 0.044 respectively) than controls. Following breakfast (over 120 min), ghrelin and PYY area under the curve (AUC) were higher, while BDNF AUC was lower in AN vs. controls (p = 0.007, 0.017 and 0.020 respectively). Among AN (but not controls), reductions in ghrelin and increases in PYY in the first 30-minutes following breakfast were associated with reductions in VAS scores for prospective food consumption. AN consumed fewer calories during the CTT vs. controls (p < 0.0001). In AN (particularly AN-restrictive subtype), BDNF AUC was positively associated with kilocalories consumed during the CTT CONCLUSIONS: In young females with AN, changes in ghrelin and PYY following food intake are associated with reductions in a prospective measure of food consumption, while reductions in BDNF are associated with reduced hedonic food intake. Further studies are necessary to better understand the complex interplay between appetite signals and eating behaviors in AN.
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Affiliation(s)
- Christopher Mancuso
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States
| | - Alyssa Izquierdo
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States
| | - Meghan Slattery
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States
| | - Kendra R Becker
- Eating Disorders Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, United States
| | - Franziska Plessow
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States
| | - Jennifer J Thomas
- Eating Disorders Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, United States
| | - Kamryn T Eddy
- Eating Disorders Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, United States
| | - Elizabeth A Lawson
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States
| | - Madhusmita Misra
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, United States; Division of Pediatric Endocrinology, Massachusetts General Hospital for Children and Harvard Medical School, United States.
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Berner LA, Brown TA, Lavender JM, Lopez E, Wierenga CE, Kaye WH. Neuroendocrinology of reward in anorexia nervosa and bulimia nervosa: Beyond leptin and ghrelin. Mol Cell Endocrinol 2019; 497:110320. [PMID: 30395874 PMCID: PMC6497565 DOI: 10.1016/j.mce.2018.10.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/19/2018] [Accepted: 10/27/2018] [Indexed: 12/14/2022]
Abstract
The pathophysiology of anorexia nervosa (AN) and bulimia nervosa (BN) are still poorly understood, but psychobiological models have proposed a key role for disturbances in the neuroendocrines that signal hunger and satiety and maintain energy homeostasis. Mounting evidence suggests that many neuroendocrines involved in the regulation of homeostasis and body weight also play integral roles in food reward valuation and learning via their interactions with the mesolimbic dopamine system. Neuroimaging data have associated altered brain reward responses in this system with the dietary restriction and binge eating and purging characteristic of AN and BN. Thus, neuroendocrine dysfunction may contribute to or perpetuate eating disorder symptoms via effects on reward circuitry. This narrative review focuses on reward-related neuroendocrines that are altered in eating disorder populations, including peptide YY, insulin, stress and gonadal hormones, and orexins. We provide an overview of the animal and human literature implicating these neuroendocrines in dopaminergic reward processes and discuss their potential relevance to eating disorder symptomatology and treatment.
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Affiliation(s)
- Laura A Berner
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States.
| | - Tiffany A Brown
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States
| | - Jason M Lavender
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States
| | - Emily Lopez
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States
| | - Christina E Wierenga
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States
| | - Walter H Kaye
- University of California, San Diego, Eating Disorders Center for Treatment and Research, Department of Psychiatry, United States
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23
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Keel PK, Bodell LP, Forney KJ, Appelbaum J, Williams D. Examining weight suppression as a transdiagnostic factor influencing illness trajectory in bulimic eating disorders. Physiol Behav 2019; 208:112565. [PMID: 31153878 PMCID: PMC6636832 DOI: 10.1016/j.physbeh.2019.112565] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/14/2019] [Accepted: 05/29/2019] [Indexed: 12/25/2022]
Abstract
Recent research indicates that weight suppression (WS: defined as the difference between highest lifetime and current weight) prospectively predicts illness trajectory across eating disorders characterized by binge eating, including AN binge-purge subtype (ANbp), bulimia nervosa (BN), and binge eating disorder (BED), collectively referred to as bulimic eating disorders. Through a series of studies, we have developed a model to explain the link between WS and illness trajectory in bulimic eating disorders. Our model posits that WS contributes to reduced circulating leptin, which leads to reduced postprandial glucagon-like peptide 1 (GLP-1) response. Diminished leptin and GLP-1 function contribute to alterations in two reward-related constructs in the Research Domain Criteria (RDoC): reward value/effort and reward satiation. Respectively, these changes increase drive/motivation to consume food and decrease ability for food consumption to lead to a state of satiation/satisfaction. Combined, these alterations increase risk for experiencing large, out-of-control binge-eating episodes. The following review presents evidence that contributed to the development of this model as well as preliminary findings from an on-going project funded to test this model.
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Affiliation(s)
- Pamela K Keel
- Department of Psychology, Florida State University, USA.
| | | | | | | | - Diana Williams
- Department of Psychology and Program in Neuroscience, Florida State University, USA
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Stojiljkovic-Drobnjak S, Fischer S, Arnold M, Langhans W, Ehlert U. Menopause is associated with decreased postprandial ghrelin, whereas a history of anorexia nervosa is associated with increased total ghrelin. J Neuroendocrinol 2019; 31:e12661. [PMID: 30447166 DOI: 10.1111/jne.12661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/07/2018] [Accepted: 11/14/2018] [Indexed: 12/29/2022]
Abstract
Middle age has been linked with various dysfunctional eating patterns in women. The hormone ghrelin is related to food intake, with plasma levels rising before eating and decreasing immediately afterwards. Animal research has shown that oestradiol is an antagonist of ghrelin. Given that both menopause and anorexia nervosa (AN) are states characterised by reduced oestradiol, the present study aimed to investigate for the first time whether menopausal status and a history of AN are linked with altered ghrelin levels in middle-aged women. Based on previous research, we hypothesised that (i) post-menopausal women would demonstrate comparably increased ghrelin after food intake and (ii) women with a history of AN would exhibit increased total ghrelin levels. Healthy, middle-aged women (n = 57) were recruited. Of the women, 31 were post-menopausal and 27 had a history of AN. Plasma ghrelin was repeatedly collected before and after a meal standardised in terms of caloric content. Areas under the curves were calculated to indicate total (AUCg) and postprandial ghrelin (AUCi). Menopausal status was linked with postprandial ghrelin (AUCi -1.6 ± 2.2 vs -2.9 ± 2.6; P = 0.058), whereas a history of AN was linked with total ghrelin (AUCg 36.2 ± 5.6 vs 39.0 ± 3.7; P = 0.050). There were no interaction effects (both P > 0.466). A closer examination of the effects revealed that post-menopausal women showed marginally greater decreases in ghrelin immediately after food intake (P = 0.064) and marginally greater re-increases after 60 minutes (P = 0.084) compared to pre-menopausal women. Women with a history of AN had significantly higher total ghrelin compared to women without a history of AN (P = 0.042). Post-menopause was linked with higher sensitivity of ghrelin to food intake (trend), whereas a history of AN was related to greater total ghrelin. Future research should investigate to what extent the observed alterations in ghrelin may affect dysfunctional eating behaviour during middle age.
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Affiliation(s)
| | - Susanne Fischer
- Institute of Psychology, Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland
| | - Myrtha Arnold
- Physiology and Behavior Laboratory, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Wolfgang Langhans
- Physiology and Behavior Laboratory, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Ulrike Ehlert
- Institute of Psychology, Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland
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25
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Effect of Macronutrient Composition on Appetite Hormone Responses in Adolescents with Obesity. Nutrients 2019; 11:nu11020340. [PMID: 30764560 PMCID: PMC6412761 DOI: 10.3390/nu11020340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/23/2019] [Accepted: 01/31/2019] [Indexed: 02/07/2023] Open
Abstract
Gut appetite hormone responses may be influenced by meal macronutrients and obesity. The primary aim of this study was to examine in adolescents with obesity and of healthy weight the effect of a high-protein and a high-carbohydrate meal on postprandial gut appetite hormones. A postprandial cross-over study with adolescents 11–19 years old was undertaken. Participants consumed, in random order, a high 79% carbohydrate (HCHO) and a high 55% protein (HP) meal. Ghrelin, glucagon-like peptide 1 (GLP-1), peptide YY (PYY), and self-reported appetite were assessed for four hours postprandial. Total energy intake from an ad libitum lunch and remaining 24 h was assessed. Eight adolescents with obesity (OB) and 12 with healthy weight (HW) participated. Compared with HW, OB adolescents displayed a smaller ghrelin iAUC (−25,896.5 ± 7943 pg/mL/4 h vs. −60,863.5 ± 13104 pg/mL/4 h) (p = 0.008) with no effect of meal (p > 0.05). The suppression of ghrelin relative to baseline was similar between OB and HW. Ghrelin suppression was greater following the HP vs. HCHO meal (effect of meal, p = 0.018). Glucose and insulin response were greater following HCHO vs. HP, with responses more marked in OB (time × weight × meal interaction, p = 0.003 and p = 0.018, respectively). There were no effects of weight or macronutrient on GLP-1 or PYY, appetite or subsequent energy intake. The present study demonstrates that dietary protein can modulate postprandial ghrelin responses; however, this did not translate to subsequent changes in subjective appetite or energy intake.
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Poirier KL, Totosy de Zepetnek JO, Bennett LJ, Brett NR, Boateng T, Schwartz A, Luhovyy BL, Bellissimo N. Effect of Commercially Available Sugar-Sweetened Beverages on Subjective Appetite and Short-Term Food Intake in Boys. Nutrients 2019; 11:nu11020270. [PMID: 30691085 PMCID: PMC6412575 DOI: 10.3390/nu11020270] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 12/20/2022] Open
Abstract
It is unclear whether sugar sweetened beverages bypass regulatory controls of food intake (FI) in boys. The objective of the present study was to determine the effects of isovolumetric preloads (350 mL) of a fruit-flavoured drink (154 kcal), cola (158 kcal), 1% M.F. chocolate milk (224 kcal), and water (0 kcal) on subjective appetite and FI in boys aged 9–14 years. On four separate mornings, boys consumed one of the preloads in a random order; subjective appetite was measured at 15 min intervals, and FI was measured via an ad libitum pizza lunch at 60 min post-beverage consumption. In the 32 boys (age: 11.8 ± 0.3 years), FI was reduced (p < 0.001) after cola (940 ± 46 kcal) and chocolate milk (878 ± 41 kcal) compared with the water control (1048 ± 35 kcal) and after chocolate milk compared to the fruit drink (1005 ± 44 kcal). Cumulative FI after the fruit drink was greater than the water control (1159 ± 44 vs. 1048 ± 35 kcal; p = 0.03). Average appetite was not affected by the treatment, but the cola treatment resulted in greater fullness (p = 0.04) and lower prospective food consumption (p = 0.004) compared with the fruit drink. In conclusion, chocolate milk and cola suppressed next-meal FI at 60 min, while fruit drink increased cumulative FI (beverage + next meal) over 60 min in boys. Results from this study suggest that beverage composition is an important determinant of FI suppression in boys.
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Affiliation(s)
- Kelly L Poirier
- Department of Applied Human Nutrition, Mount Saint Vincent University, 166 Bedford Highway, Halifax, NS B3M 2J6, Canada.
| | - Julia O Totosy de Zepetnek
- Faculty of Kinesiology & Health Studies, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada.
| | - Lorianne J Bennett
- Department of Applied Human Nutrition, Mount Saint Vincent University, 166 Bedford Highway, Halifax, NS B3M 2J6, Canada.
| | - Neil R Brett
- School of Nutrition, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
| | - Terence Boateng
- School of Nutrition, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
| | - Alexander Schwartz
- School of Nutrition, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
| | - Bohdan L Luhovyy
- Department of Applied Human Nutrition, Mount Saint Vincent University, 166 Bedford Highway, Halifax, NS B3M 2J6, Canada.
| | - Nick Bellissimo
- School of Nutrition, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
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Heruc GA, Little TJ, Kohn M, Madden S, Clarke S, Horowitz M, Feinle-Bisset C. Appetite Perceptions, Gastrointestinal Symptoms, Ghrelin, Peptide YY and State Anxiety Are Disturbed in Adolescent Females with Anorexia Nervosa and Only Partially Restored with Short-Term Refeeding. Nutrients 2018; 11:nu11010059. [PMID: 30597915 PMCID: PMC6356798 DOI: 10.3390/nu11010059] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/23/2018] [Accepted: 12/25/2018] [Indexed: 02/07/2023] Open
Abstract
Factors underlying disturbed appetite perception in anorexia nervosa (AN) are poorly characterized. We examined in patients with AN whether fasting and postprandial appetite perceptions, gastrointestinal (GI) hormones, GI symptoms and state anxiety (i) differed from healthy controls (HCs) and (ii) were modified by two weeks of refeeding. 22 female adolescent inpatients with restricting AN, studied on hospital admission once medically stable (Wk0), and after one (Wk1) and two (Wk2) weeks of high-calorie refeeding, were compared with 17 age-matched HCs. After a 4 h fast, appetite perceptions, GI symptoms, state anxiety, and plasma acyl-ghrelin, cholecystokinin (CCK), peptide tyrosine tyrosine (PYY) and pancreatic polypeptide (PP) concentrations were assessed at baseline and in response to a mixed-nutrient test-meal (479 kcal). Compared with HCs, in patients with AN at Wk0, baseline ghrelin, PYY, fullness, bloating and anxiety were higher, and hunger less, and in response to the meal, ghrelin, bloating and anxiety were greater, and hunger less (all p < 0.05). After two weeks of refeeding, there was no change in baseline or postprandial ghrelin or bloating, or postprandial anxiety, but baseline PYY, fullness and anxiety decreased, and baseline and postprandial hunger increased (p < 0.05). We conclude that in AN, refeeding for 2 weeks was associated with improvements in PYY, appetite and baseline anxiety, while increased ghrelin, bloating and postprandial anxiety persisted.
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Affiliation(s)
- Gabriella A Heruc
- Adelaide Medical School and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Level 5 Adelaide Health and Medical Sciences Building, Corner North Terrace and George Street, Adelaide 5005, Australia.
| | - Tanya J Little
- Adelaide Medical School and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Level 5 Adelaide Health and Medical Sciences Building, Corner North Terrace and George Street, Adelaide 5005, Australia.
| | - Michael Kohn
- The Children's Hospital at Westmead, Sydney 2145, Australia.
- Adolescent and Young Adult Medicine Department, Westmead Hospital, Sydney 2145, Australia.
| | - Sloane Madden
- The Children's Hospital at Westmead, Sydney 2145, Australia.
| | - Simon Clarke
- Adolescent and Young Adult Medicine Department, Westmead Hospital, Sydney 2145, Australia.
| | - Michael Horowitz
- Adelaide Medical School and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Level 5 Adelaide Health and Medical Sciences Building, Corner North Terrace and George Street, Adelaide 5005, Australia.
| | - Christine Feinle-Bisset
- Adelaide Medical School and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Level 5 Adelaide Health and Medical Sciences Building, Corner North Terrace and George Street, Adelaide 5005, Australia.
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Risperidone But Not Quetiapine Treatment Is Associated With Increased Appetite But Not Satiety Hormones in Children During An Oral Glucose Tolerance Test: A Pilot Study. J Clin Psychopharmacol 2018; 38:622-626. [PMID: 30300290 DOI: 10.1097/jcp.0000000000000956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Second-generation antipsychotics (SGAs) are commonly used to treat children with mental health conditions (MHCs) but are associated with adverse effects including obesity, hypertension, dyslipidemia, and type 2 diabetes. The mechanisms underlying these complications are unknown, but it has been suggested that SGAs increase appetite leading to weight gain. The present objective was to perform a pilot study to investigate appetite and satiety hormones in SGA-treated (risperidone or quetiapine) and SGA-naive children with similar mental health conditions. METHODS Oral glucose tolerance tests (OGTTs) were conducted in SGA-naive (n = 18), risperidone-treated (n = 20), and quetiapine-treated (n = 16) children recruited from the British Columbia Children's Hospital Psychiatry Department. Over 5 time-points during the OGTT, appetite questionnaires using a visual analogue scale were administered, and blood was collected to measure ghrelin, peptide YY, glucose-dependent insulinotropic polypeptide, glucagon-like protein 1, leptin, and adiponectin. Mixed model analyses were conducted to examine between-group differences. RESULTS The children were similar in age, psychiatric diagnosis, and global assessment of functioning scores. Body mass index z-scores were also similar between groups. Appetite was increased during the OGTT in the risperidone-treated compared with the SGA-naive group for 2 questions ("How strong is your desire to eat"; P = 0.003 and "How much food do you think you can eat"; P = 0.028). No differences in satiety hormones were observed between the 3 groups. CONCLUSIONS Risperidone treatment in youth is associated with elevated appetite during an OGTT, with no differences in gut peptides or adipocytokines to explain risperidone's effect on appetite. Further research is needed to explore other mediators of weight gain and metabolic dysfunction in SGA-treated youth.
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Heruc GA, Little TJ, Kohn MR, Madden S, Clarke SD, Horowitz M, Feinle-Bisset C. Effects of starvation and short-term refeeding on gastric emptying and postprandial blood glucose regulation in adolescent girls with anorexia nervosa. Am J Physiol Endocrinol Metab 2018; 315:E565-E573. [PMID: 29969316 DOI: 10.1152/ajpendo.00149.2018] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Postprandial glucose is reduced in malnourished patients with anorexia nervosa (AN), but the mechanisms and duration for this remain unclear. We examined blood glucose, gastric emptying, and glucoregulatory hormone changes in malnourished patients with AN and during 2 wk of acute refeeding compared with healthy controls (HCs). Twenty-two female adolescents with AN and 17 age-matched female HCs were assessed after a 4-h fast. Patients were commenced on a refeeding protocol of 2,400 kcal/day. Gastric emptying (13C-octanoate breath test), glucose absorption (3-O-methylglucose), blood glucose, plasma glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), insulin, C-peptide, and glucagon responses to a mixed-nutrient test meal were measured on admission and 1 and 2 wk after refeeding. HCs were assessed once. On admission, patients had slower gastric emptying, lower postprandial glucose and insulin, and higher glucagon and GLP-1 than HCs ( P < 0.05). In patients with AN, the rise in glucose (0-30 min) correlated with gastric emptying ( P < 0.05). With refeeding, postprandial glucose and 3-O-methylglucose were higher, gastric emptying faster, and baseline insulin and C-peptide less ( P < 0.05), compared with admission. After 2 wk of refeeding, postprandial glucose remained lower, and glucagon and GLP-1 higher, in patients with AN than HCs ( P < 0.05) without differences in gastric emptying, baseline glucagon, or postprandial insulin. Delayed gastric emptying may underlie reduced postprandial glucose in starved patients with AN; however, postprandial glucose and glucoregulatory hormone changes persist after 2 wk of refeeding despite improved gastric emptying. Future research should explore whether reduced postprandial glucose in AN is related to medical risk by examining associated symptoms alongside continuous glucose monitoring during refeeding.
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Affiliation(s)
- Gabriella A Heruc
- Adelaide Medical School, University of Adelaide, SA, Australia
- National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health , Adelaide, SA , Australia
- The Children's Hospital at Westmead , Sydney, NSW , Australia
| | - Tanya J Little
- Adelaide Medical School, University of Adelaide, SA, Australia
- National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health , Adelaide, SA , Australia
| | - Michael R Kohn
- The Children's Hospital at Westmead , Sydney, NSW , Australia
- Westmead Hospital , Sydney, NSW , Australia
| | - Sloane Madden
- The Children's Hospital at Westmead , Sydney, NSW , Australia
| | | | - Michael Horowitz
- Adelaide Medical School, University of Adelaide, SA, Australia
- National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health , Adelaide, SA , Australia
| | - Christine Feinle-Bisset
- Adelaide Medical School, University of Adelaide, SA, Australia
- National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health , Adelaide, SA , Australia
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Favorable Effects of a Ketogenic Diet on Physical Function, Perceived Energy, and Food Cravings in Women with Ovarian or Endometrial Cancer: A Randomized, Controlled Trial. Nutrients 2018; 10:nu10091187. [PMID: 30200193 PMCID: PMC6163837 DOI: 10.3390/nu10091187] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/21/2018] [Accepted: 08/24/2018] [Indexed: 11/27/2022] Open
Abstract
Ketogenic diets (KDs) are gaining attention as a potential adjuvant therapy for cancer, but data are limited for KDs’ effects on quality of life. We hypothesized that the KD would (1) improve mental and physical function, including energy levels, (2) reduce hunger, and (3) diminish sweet and starchy food cravings in women with ovarian or endometrial cancer. Participants were randomized to a KD (70:25:5 energy from fat, protein, and carbohydrate) or the American Cancer Society diet (ACS: high-fiber, lower-fat). Questionnaires were administered at baseline and after 12 weeks on the assigned diet to assess changes in mental and physical health, perceived energy, appetite, and food cravings. We assessed both between-group differences and within-group changes using ANCOVA and paired t-tests, respectively. After 12 weeks, there was a significant between-group difference in adjusted physical function scores (p < 0.05), and KD participants not receiving chemotherapy reported a significant within-group reduction in fatigue (p < 0.05). There were no significant between-group differences in mental function, hunger, or appetite. There was a significant between-group difference in adjusted cravings for starchy foods and fast food fats at 12 weeks (p < 0.05 for both), with the KD group demonstrating less frequent cravings than the ACS. In conclusion, in women with ovarian or endometrial cancer, a KD does not negatively affect quality of life and in fact may improve physical function, increase energy, and diminish specific food cravings. This trial was registered at ClinicalTrials.gov as NCT03171506.
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Acute and Chronic Effects of Exercise on Appetite, Energy Intake, and Appetite-Related Hormones: The Modulating Effect of Adiposity, Sex, and Habitual Physical Activity. Nutrients 2018; 10:nu10091140. [PMID: 30131457 PMCID: PMC6164815 DOI: 10.3390/nu10091140] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/15/2018] [Accepted: 08/20/2018] [Indexed: 12/12/2022] Open
Abstract
Exercise facilitates weight control, partly through effects on appetite regulation. Single bouts of exercise induce a short-term energy deficit without stimulating compensatory effects on appetite, whilst limited evidence suggests that exercise training may modify subjective and homeostatic mediators of appetite in directions associated with enhanced meal-induced satiety. However, a large variability in responses exists between individuals. This article reviews the evidence relating to how adiposity, sex, and habitual physical activity modulate exercise-induced appetite, energy intake, and appetite-related hormone responses. The balance of evidence suggests that adiposity and sex do not modify appetite or energy intake responses to acute or chronic exercise interventions, but individuals with higher habitual physical activity levels may better adjust energy intake in response to energy balance perturbations. The effect of these individual characteristics and behaviours on appetite-related hormone responses to exercise remains equivocal. These findings support the continued promotion of exercise as a strategy for inducing short-term energy deficits irrespective of adiposity and sex, as well as the ability of exercise to positively influence energy balance over the longer term. Future well-controlled studies are required to further ascertain the potential mediators of appetite responses to exercise.
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The Role of Ghrelin in Anorexia Nervosa. Int J Mol Sci 2018; 19:ijms19072117. [PMID: 30037011 PMCID: PMC6073411 DOI: 10.3390/ijms19072117] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 07/11/2018] [Accepted: 07/17/2018] [Indexed: 12/26/2022] Open
Abstract
Ghrelin, a 28-amino acid peptide hormone expressed in X/A-like endocrine cells of the stomach, is the only known peripherally produced and centrally acting peptide that stimulates food intake and therefore attracted a lot of attention with one major focus on the treatment of conditions where an increased energy intake or body weight gain is desired. Anorexia nervosa is an eating disorder characterized by a pronounced reduction of body weight, a disturbed body image and hormonal alterations. Ghrelin signaling has been thoroughly investigated under conditions of anorexia nervosa. The present review will highlight these alterations of ghrelin in anorexia and discuss possible treatment strategies targeting ghrelin signaling. Lastly, gaps in knowledge will be mentioned to foster future research.
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Bliss ES, Whiteside E. The Gut-Brain Axis, the Human Gut Microbiota and Their Integration in the Development of Obesity. Front Physiol 2018; 9:900. [PMID: 30050464 PMCID: PMC6052131 DOI: 10.3389/fphys.2018.00900] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/21/2018] [Indexed: 12/17/2022] Open
Abstract
Obesity is a global epidemic, placing socioeconomic strain on public healthcare systems, especially within the so-called Western countries, such as Australia, United States, United Kingdom, and Canada. Obesity results from an imbalance between energy intake and energy expenditure, where energy intake exceeds expenditure. Current non-invasive treatments lack efficacy in combating obesity, suggesting that obesity is a multi-faceted and more complex disease than previously thought. This has led to an increase in research exploring energy homeostasis and the discovery of a complex bidirectional communication axis referred to as the gut-brain axis. The gut-brain axis is comprised of various neurohumoral components that allow the gut and brain to communicate with each other. Communication occurs within the axis via local, paracrine and/or endocrine mechanisms involving a variety of gut-derived peptides produced from enteroendocrine cells (EECs), including glucagon-like peptide 1 (GLP1), cholecystokinin (CCK), peptide YY3-36 (PYY), pancreatic polypeptide (PP), and oxyntomodulin. Neural networks, such as the enteric nervous system (ENS) and vagus nerve also convey information within the gut-brain axis. Emerging evidence suggests the human gut microbiota, a complex ecosystem residing in the gastrointestinal tract (GIT), may influence weight-gain through several inter-dependent pathways including energy harvesting, short-chain fatty-acids (SCFA) signalling, behaviour modifications, controlling satiety and modulating inflammatory responses within the host. Hence, the gut-brain axis, the microbiota and the link between these elements and the role each plays in either promoting or regulating energy and thereby contributing to obesity will be explored in this review.
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Affiliation(s)
- Edward S. Bliss
- School of Health and Wellbeing, University of Southern Queensland, Toowoomba, QLD, Australia
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Jia H, Wu WD, Lu X, Zhang J, He CH, Zhang HB. Role of Glucagon-Like Peptide-1 and Gastric Inhibitory Peptide in Anorexia Induction Following Oral Exposure to the Trichothecene Mycotoxin Deoxynivalenol (Vomitoxin). Toxicol Sci 2018. [PMID: 28633506 DOI: 10.1093/toxsci/kfx112] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Deoxynivalenol (DON), which is a Type B trichothecene mycotoxin produced by Fusarium, frequently contaminates cereal staples, such as wheat, barley and corn. DON threatens animal and human health by suppressing food intake and impairing growth. While anorexia induction in mice exposed to DON has been linked to the elevation of the satiety hormones cholecystokinin and peptide YY3-36 in plasma, the effects of DON on the release of other satiety hormones, such as glucagon-like peptide-1 (GLP-1) and gastric inhibitory peptide (GIP), have not been established. The purpose of this study was to determine the roles of GLP-1 and GIP in DON-induced anorexia. In a nocturnal mouse food consumption model, the elevation of plasma GLP-1 and GIP concentrations markedly corresponded to anorexia induction by DON. Pretreatment with the GLP-1 receptor antagonist Exendin9-39 induced a dose-dependent attenuation of both GLP-1- and DON-induced anorexia. In contrast, the GIP receptor antagonist Pro3GIP induced a dose-dependent attenuation of both GIP- and DON-induced anorexia. Taken together, these results suggest that GLP-1 and GIP play instrumental roles in anorexia induction following oral exposure to DON, and the effect of GLP-1 is more potent and long-acting than that of GIP.
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Affiliation(s)
- Hui Jia
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Wen-Da Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Xi Lu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Jie Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Cheng-Hua He
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Hai-Bin Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
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Anorectic response to the trichothecene T-2 toxin correspond to plasma elevations of the satiety hormone glucose-dependent insulinotropic polypeptide and peptide YY 3-36. Toxicology 2018; 402-403:28-36. [PMID: 29689362 DOI: 10.1016/j.tox.2018.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/30/2018] [Accepted: 04/19/2018] [Indexed: 12/25/2022]
Abstract
T-2 toxin, a potent type A trichothecene mycotoxin, is produced by various Fusarium species and can negatively impact animal and human health. Although anorexia induction is a common hallmark of T-2 toxin-induced toxicity, the underlying mechanisms for this adverse effect are not fully understood. The goal of this study was to determine the roles of two gut satiety hormones, glucose-dependent insulinotropic polypeptide (GIP) and Peptide YY3-36 (PYY3-36) in anorexia induction by T-2 toxin. Elevations of plasma GIP and PYY3-36 markedly corresponded to anorexia induction following oral exposure to T-2 toxin using a nocturnal mouse anorexia model. Direct administration of exogenous GIP and PYY3-36 similarly induced anorectic responses. Furthermore, the GIP receptor antagonist Pro3GIP dose-dependently attenuated both GIP- and T-2 toxin-induced anorectic responses. Pretreatment with NPY2 receptor antagonist JNJ-31020028 induced a dose-dependent attenuation of both PYY3-36- and T-2 toxin-induced anorectic responses. To summarize, these findings suggest that both GIP and PYY3-36 might be critical mediators of anorexia induction by T-2 toxin.
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Pilot Study Measuring the Novel Satiety Hormone, Pro-Uroguanylin, in Adolescents With and Without Obesity. J Pediatr Gastroenterol Nutr 2018; 66:489-495. [PMID: 29112082 PMCID: PMC5825243 DOI: 10.1097/mpg.0000000000001796] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Disruption of satiety signaling may lead to increased caloric intake and obesity. Uroguanylin, the intestinal hormone, travels as a precursor to the central nervous system where it activates guanylyl cyclase C and stimulates pro-satiety neurons. Rodent studies have demonstrated that guanylyl cyclase C-knockout mice overeat and have increased weight gain versus wild-type mice and hyper-caloric obesity diminishes uroguanylin expression. We measured circulating plasma pro-uroguanylin, along with other gastrointestinal peptides and inflammatory markers, in human adolescents with and without obesity, as a pilot study. We hypothesized that adolescents with obesity would have less circulating pro-uroguanylin than adolescents without obesity have. METHODS We recruited 24 adolescents (age 14-17 years) with and without obesity (body mass index >95% or body mass index <95%) and measured plasma pro-uroguanylin at fasting and successive time points after a meal. We measured 3 other satiety hormones and 2 inflammatory markers to characterize overall satiety signaling and highlight any link between uroguanylin and inflammation. RESULTS Female adolescents with obesity had lower circulating pro-uroguanylin levels than female adolescents without obesity; we observed no difference in males. Other measured gastrointestinal peptides varied in their differences between cohorts. Inflammatory markers were higher in female participants with obesity. CONCLUSIONS In adolescents with and without obesity, we can measure circulating pro-uroguanylin levels. In female adolescents without obesity, levels are particularly higher. Pro-uroguanylin secretion patterns differ from other circulating gastrointestinal peptides. In female adolescents with obesity, inflammation correlates with decreased pro-uroguanylin levels.
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Zhang J, Jia H, Wang Q, Zhang Y, Wu W, Zhang H. Role of Peptide YY3-36 and Glucose-Dependent Insulinotropic Polypeptide in Anorexia Induction by Trichothecences T-2 Toxin, HT-2 Toxin, Diacetoxyscirpenol, and Neosolaniol. Toxicol Sci 2017; 159:203-210. [DOI: 10.1093/toxsci/kfx128] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Jie Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Hui Jia
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Qingqing Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Yajie Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Wenda Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
| | - Haibin Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, P.R. China
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Nishizawa N, Niida A, Masuda Y, Kumano S, Yokoyama K, Hirabayashi H, Amano N, Ohtaki T, Asami T. Antiobesity Effect of a Short-Length Peptide YY Analogue after Continuous Administration in Mice. ACS Med Chem Lett 2017; 8:628-631. [PMID: 28626523 PMCID: PMC5467190 DOI: 10.1021/acsmedchemlett.7b00047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/01/2017] [Indexed: 11/29/2022] Open
Abstract
Gastrointestinal peptides such as peptide YY (PYY) can regulate appetite, which is relevant to the study of obesity. The intraperitoneal bolus administration of PYY3-36 and a 12-amino acid PYY analogue, benzoyl-[Cha27,28,36,Aib31]PYY25-36 (1), showed similar anorectic activity by activating the Y2 receptor (Y2R). However, food intake inhibition and body weight loss were not observed upon continuous subcutaneous administration of 1 with osmotic pumps in diet-induced obese (DIO) mice. N-Terminal elongation of 1, together with amino acid substitution at position 24, led to a hydrophilic 14-amino acid peptide, Ac-[d-Hyp24,Cha27,28,36,Aib31]PYY23-36 (18), that showed higher affinity and more potent agonist activity for Y2R and a robust anorectic activity with potency similar to that of PYY3-36. In addition, the continuous subcutaneous administration of 18 at 0.3 mg/(kg·day) induced significant body weight loss in DIO mice. These results suggest that a short-length PYY analogue can be a lead compound for antiobesity therapy in a sustained-release formulation.
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Affiliation(s)
- Naoki Nishizawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Ayumu Niida
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Yasushi Masuda
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Satoshi Kumano
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Kotaro Yokoyama
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Hideki Hirabayashi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Nobuyuki Amano
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Tetsuya Ohtaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
| | - Taiji Asami
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., Fujisawa 251-8555, Japan
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Belinova L, Kahleova H, Malinska H, Topolcan O, Windrichova J, Oliyarnyk O, Kazdova L, Hill M, Pelikanova T. The effect of meal frequency in a reduced-energy regimen on the gastrointestinal and appetite hormones in patients with type 2 diabetes: A randomised crossover study. PLoS One 2017; 12:e0174820. [PMID: 28369078 PMCID: PMC5378398 DOI: 10.1371/journal.pone.0174820] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/14/2017] [Indexed: 12/26/2022] Open
Abstract
Background Appetite and gastrointestinal hormones (GIHs) participate in energy homeostasis, feeding behavior and regulation of body weight. We demonstrated previously the superior effect of a hypocaloric diet regimen with lower meal frequency (B2) on body weight, hepatic fat content, insulin sensitivity and feelings of hunger compared to the same diet divided into six smaller meals a day (A6). Studies with isoenergetic diet regimens indicate that lower meal frequency should also have an effect on fasting and postprandial responses of GIHs. The aim of this secondary analysis was to explore the effect of two hypocaloric diet regimens on fasting levels of appetite and GIHs and on their postprandial responses after a standard meal. It was hypothesized that lower meal frequency in a reduced-energy regimen leading to greater body weight reduction and reduced hunger would be associated with decreased plasma concentrations of GIHs: gastric inhibitory peptide (GIP), glucagon-like peptide-1(GLP-1), peptide YY(PYY), pancreatic polypeptide (PP) and leptin and increased plasma concentration of ghrelin. The postprandial response of satiety hormones (GLP-1, PYY and PP) and postprandial suppression of ghrelin will be improved. Methods In a randomized crossover study, 54 patients suffering from type 2 diabetes (T2D) underwent both regimens. The concentrations of GLP-1, GIP, PP, PYY, amylin, leptin and ghrelin were determined using multiplex immunoanalyses. Results Fasting leptin and GIP decreased in response to both regimens with no difference between the treatments (p = 0.37 and p = 0.83, respectively). Fasting ghrelin decreased in A6 and increased in B2 (with difference between regimens p = 0.023). Fasting PP increased in B2with no significant difference between regimens (p = 0.17). Neither GLP-1 nor PYY did change in either regimen. The decrease in body weight correlated negatively with changes in fasting ghrelin (r = -0.4, p<0.043) and the postprandial reduction of ghrelin correlated positively with its fasting level (r = 0.9, p<0.001). The postprandial responses of GIHs and appetite hormones were similar after both diet regimens. Conclusions Both hypocaloric diet regimens reduced fasting leptin and GIP and postprandial response of GIP comparably. The postprandial responses of GIHs and appetite hormones were similar after both diet regimens. Eating only breakfast and lunch increased fasting plasma ghrelin more than the same caloric restriction split into six meals. The changes in fasting ghrelin correlated negatively with the decrease in body weight. These results suggest that for type 2 diabetic patients on a hypocaloric diet, eating larger breakfast and lunch may be more efficient than six smaller meals during the day.
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Affiliation(s)
- Lenka Belinova
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
- * E-mail:
| | - Hana Kahleova
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Hana Malinska
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Ondrej Topolcan
- Laboratory of Immunoanalysis, University Hospital in Pilsen, Pilsen, Czech Republic
| | - Jindra Windrichova
- Laboratory of Immunoanalysis, University Hospital in Pilsen, Pilsen, Czech Republic
| | - Olena Oliyarnyk
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Ludmila Kazdova
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Martin Hill
- Department of Steroid Hormones and Proteohormones, Institute of Endocrinology, Prague, Czech Republic
| | - Terezie Pelikanova
- Department of Diabetology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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Trahair LG, Marathe CS, Standfield S, Rayner CK, Feinle-Bisset C, Horowitz M, Jones KL. Effects of small intestinal glucose on glycaemia, insulinaemia and incretin hormone release are load-dependent in obese subjects. Int J Obes (Lond) 2017; 41:225-232. [PMID: 27840416 DOI: 10.1038/ijo.2016.202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 08/10/2016] [Accepted: 09/30/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND/OBJECTIVES Studies concerning the glycaemic response to oral glucose, or meals in obesity have usually failed to account for gastric emptying. It has been suggested that the incretin effect may be diminished in obesity as a result of a reduction in glucagon-like peptide-1 (GLP-1) secretion. We sought to determine the effect of two different rates of intraduodenal glucose infusions on glycaemic, insulinaemic and incretin hormone responses in lean and obese subjects and compare the effects of oral and intraduodenal glucose in obese subjects. SUBJECTS/METHODS Eleven obese subjects (age 37.5±4.1 years, body mass index (BMI) 35.7±1.4 kg m-2) and 12 controls (age 34.7±4.0 years, BMI 23.9±0.7 kg m-2) received intraduodenal infusions of glucose at 1 or 3 kcal min-1, or saline for 60 min (t=0-60 min), followed by intraduodenal saline (t=60-120 min). In obese subjects, an oral glucose tolerance test was performed. Blood glucose, serum insulin, plasma total GLP-1 and total gastric inhibitory polypeptide (GIP) were measured. RESULTS In both the groups (P<0.001), the incremental areas under the curve (iAUC)0-60 min for glucose was greater with the 3 kcal min-1 than the 1 kcal min-1 infusion; the iAUC0-120 min for glucose during 3 kcal min-1 was greater (P<0.05), in the obese. Insulin responses to 1 kcal min-1 and, particularly, 3 kcal min-1 were greater (P<0.001) in the obese. Stimulation of GLP-1 and GIP were greater (P<0.001) in response to 3 kcal min-1, compared with 1 kcal min-1 and saline, without any difference between the groups. In the obese, glycaemic, insulinaemic and GIP, but not GLP-1, responses to oral and intraduodenal glucose were related (P<0.05). CONCLUSIONS The rate of duodenal glucose delivery is a major determinant of glycaemia, insulinaemia and incretin hormone release in obese subjects. Obesity is not apparently associated with impaired GLP-1 secretion.
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Affiliation(s)
- L G Trahair
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - C S Marathe
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - S Standfield
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - C K Rayner
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - C Feinle-Bisset
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - M Horowitz
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
| | - K L Jones
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia
- NHMRC Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, South Australia, Australia
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Au CC, Furness JB, Brown KA. Ghrelin and Breast Cancer: Emerging Roles in Obesity, Estrogen Regulation, and Cancer. Front Oncol 2017; 6:265. [PMID: 28119851 PMCID: PMC5220482 DOI: 10.3389/fonc.2016.00265] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 12/12/2016] [Indexed: 01/26/2023] Open
Abstract
Local and systemic factors have been shown to drive the growth of breast cancer cells in postmenopausal obese women, who have increased risk of estrogen receptor-positive breast cancer. Estrogens, produced locally in the breast fat by the enzyme aromatase, have an important role in promoting cancer cell proliferation. Ghrelin, a 28-amino acid peptide hormone, may also influence cancer growth. This peptide is produced in the stomach and acts centrally to regulate appetite and growth hormone release. Circulating levels of ghrelin, and its unacylated form, des-acyl ghrelin, are almost always inversely correlated with obesity, and these peptide hormones have recently been shown to inhibit adipose tissue aromatase expression. Ghrelin and des-acyl ghrelin have also been shown to be produced by some tumor cells and influence tumor growth. The ghrelin/des-acyl ghrelin–cancer axis is complex, one reason being that tumor cells have been shown to express splice variants of ghrelin, and ghrelin and des-acyl ghrelin might act at receptors other than the cognate ghrelin receptor, growth hormone secretagogue receptor 1a, in tumors. Effects of ghrelin and des-acyl ghrelin on energy homeostasis may also affect tumor development and growth. This review will summarize our current understanding of the role of ghrelin and des-acyl ghrelin in hormone-dependent cancers, breast cancer in particular.
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Affiliation(s)
- CheukMan Cherie Au
- Metabolism and Cancer Laboratory, Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, VIC, Australia; Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - John B Furness
- Department of Anatomy and Neuroscience, University of Melbourne and Florey Institute of Neuroscience and Mental Health , Parkville, VIC , Australia
| | - Kristy A Brown
- Metabolism and Cancer Laboratory, Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, VIC, Australia; Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia; Department of Physiology, Monash University, Clayton, VIC, Australia
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Steinert RE, Feinle-Bisset C, Asarian L, Horowitz M, Beglinger C, Geary N. Ghrelin, CCK, GLP-1, and PYY(3-36): Secretory Controls and Physiological Roles in Eating and Glycemia in Health, Obesity, and After RYGB. Physiol Rev 2017; 97:411-463. [PMID: 28003328 PMCID: PMC6151490 DOI: 10.1152/physrev.00031.2014] [Citation(s) in RCA: 367] [Impact Index Per Article: 52.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The efficacy of Roux-en-Y gastric-bypass (RYGB) and other bariatric surgeries in the management of obesity and type 2 diabetes mellitus and novel developments in gastrointestinal (GI) endocrinology have renewed interest in the roles of GI hormones in the control of eating, meal-related glycemia, and obesity. Here we review the nutrient-sensing mechanisms that control the secretion of four of these hormones, ghrelin, cholecystokinin (CCK), glucagon-like peptide-1 (GLP-1), and peptide tyrosine tyrosine [PYY(3-36)], and their contributions to the controls of GI motor function, food intake, and meal-related increases in glycemia in healthy-weight and obese persons, as well as in RYGB patients. Their physiological roles as classical endocrine and as locally acting signals are discussed. Gastric emptying, the detection of specific digestive products by small intestinal enteroendocrine cells, and synergistic interactions among different GI loci all contribute to the secretion of ghrelin, CCK, GLP-1, and PYY(3-36). While CCK has been fully established as an endogenous endocrine control of eating in healthy-weight persons, the roles of all four hormones in eating in obese persons and following RYGB are uncertain. Similarly, only GLP-1 clearly contributes to the endocrine control of meal-related glycemia. It is likely that local signaling is involved in these hormones' actions, but methods to determine the physiological status of local signaling effects are lacking. Further research and fresh approaches are required to better understand ghrelin, CCK, GLP-1, and PYY(3-36) physiology; their roles in obesity and bariatric surgery; and their therapeutic potentials.
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Affiliation(s)
- Robert E Steinert
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
| | - Christine Feinle-Bisset
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
| | - Lori Asarian
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
| | - Michael Horowitz
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
| | - Christoph Beglinger
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
| | - Nori Geary
- University of Adelaide Discipline of Medicine and National Health and Medical Research Council of Australia Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, Australia; DSM Nutritional Products, R&D Human Nutrition and Health, Basel, Switzerland; Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland; Department of Biomedicine and Division of Gastroenterology, University Hospital Basel, Basel, Switzerland; and Department of Psychiatry, Weill Medical College of Cornell University, New York, New York
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Vien S, Luhovyy BL, Patel BP, Panahi S, El Khoury D, Mollard RC, Hamilton JK, Anderson GH. Pre- and within-meal effects of fluid dairy products on appetite, food intake, glycemia, and regulatory hormones in children. Appl Physiol Nutr Metab 2016; 42:302-310. [PMID: 28177745 DOI: 10.1139/apnm-2016-0251] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of beverages commonly consumed by children in-between or with meals on short-term food intake (FI) and glycemic control has received little attention. Therefore, 2 experiments were conducted in 9- to 14-year-old children following a randomized repeated-measures design. Experiment 1 (n = 32) compared the effects of water (control) and isocaloric (130 kcal) amounts of 2% milk, chocolate milk, yogurt drink, and fruit punch on subjective appetite and FI. Experiment 2 (n = 20) compared the effects of isocaloric (130 kcal) amounts of 2% milk and fruit punch on subjective appetite, FI, and glycemic and appetite hormone responses. One serving of the beverages was given as a pre-meal drink at baseline (0 min) and a second serving 60 min later with an ad libitum pizza meal. Meal FI in experiment 1 was lower by 14% and 10%, respectively, after chocolate milk and yogurt drink (p < 0.001), but not milk, compared with water. Cumulative energy intake (beverages plus meal) was higher after caloric beverages than water. In experiment 2, no differences occurred in pre-meal but post-meal glucose was 83% higher in overweight/obese than normal-weight children (p = 0.02). Milk led to higher pre-meal glucagon-like peptide-1 and post-meal peptide tyrosine tyrosine (PYY) than fruit punch (p < 0.01) but insulin did not differ between treatments. In conclusion, dairy products consumed before and with a meal have more favourable effects on FI, appetite, and satiety hormones than a sugar-sweetened beverage, but all caloric beverages result in more cumulative calories than if water is the beverage.
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Affiliation(s)
- Shirley Vien
- a Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 3E2, Canada
| | - Bohdan L Luhovyy
- b Department of Applied Human Nutrition, Mount Saint Vincent University, Halifax, NS B3M 2J6, Canada
| | - Barkha P Patel
- c Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511, USA
| | - Shirin Panahi
- a Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 3E2, Canada
| | - Dalia El Khoury
- a Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 3E2, Canada
| | - Rebecca C Mollard
- d Department of Human Nutritional Sciences, Faculty of Agricultural and Food Sciences, University of Manitoba, Winnipeg, MB R3P 2N2, Canada
| | - Jill K Hamilton
- e Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - G Harvey Anderson
- a Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 3E2, Canada
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Kells M, Kelly-Weeder S. Nasogastric Tube Feeding for Individuals With Anorexia Nervosa: An Integrative Review. J Am Psychiatr Nurses Assoc 2016; 22:449-468. [PMID: 27519612 DOI: 10.1177/1078390316657872] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The use of nasogastric (NG) feeding in individuals with anorexia nervosa (AN) is endorsed by national professional organizations; however, no guidelines currently exist. OBJECTIVES The objectives of this review were to identify and evaluate outcomes of NG feedings for individuals with AN and to develop recommendations for future research, policy, and practice. DESIGN An integrative review of the research literature was conducted. RESULTS Of the 19 studies reviewed, all indicated short-term weight gain following NG feeding. Four studies examined adherence; nearly 30% of subjects were nonadherent as evidenced by tube manipulation. Seven studies reported psychiatric outcomes, suggesting NG feeding reduces eating disorder behaviors but not overall symptomology. CONCLUSIONS NG feeding promotes short-term weight gain; however, long-term outcomes are poorly understood. Future research, using rigorous methods, is still needed to inform practice.
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Affiliation(s)
- Meredith Kells
- Meredith Kells, MSN, RN, CPNP, Boston College, Chestnut Hill, MA, USA; Boston Children's Hospital, Boston MA, USA
| | - Susan Kelly-Weeder
- Susan Kelly-Weeder, PhD, FNP-BC, FAANP, Boston College, Chestnut Hill, MA, USA
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45
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Germain N, Viltart O, Loyens A, Bruchet C, Nadin K, Wolowczuk I, Estour B, Galusca B. Interleukin-7 Plasma Levels in Human Differentiate Anorexia Nervosa, Constitutional Thinness and Healthy Obesity. PLoS One 2016; 11:e0161890. [PMID: 27611669 PMCID: PMC5017702 DOI: 10.1371/journal.pone.0161890] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/12/2016] [Indexed: 02/05/2023] Open
Abstract
Introduction Interleukin-7 (IL-7) is a cytokine involved in energy homeostasis as demonstrated in rodents. Anorexia nervosa is characterized by restrained eating behavior despite adaptive orexigenic regulation profile including high ghrelin plasma levels. Constitutional thinness is a physiological condition of resistance to weight gain with physiological anorexigenic profile including high Peptide YY plasma level. Healthy obesity can be considered as a physiological state of resistance to weight loss with opposite appetite regulating profile to constitutional thinness including low Peptide YY plasma level. No studies in IL-7 are yet available in those populations. Therefore we evaluated circadian plasma levels of IL-7 in anorexia nervosa compared to constitutional thinness, healthy obese and control females. Materials and Methods 10 restrictive-type anorexia nervosa women, 5 bingeing/purging anorexia nervosa woman, 5 recovered restrictive anorexia nervosa women, 4 bulimic females, 10 constitutional thinness women, 7 healthy obese females, and 10 normal weight women controls were enrolled in this cross-sectional study, performed in endocrinology unit and academic laboratory. Twelve-point circadian profiles of plasma IL-7 levels were measured in each subject. Results 24h mean IL-7 plasma levels (pg/ml, mean±SEM) were decreased in restrictive-type anorexia nervosa (123.4±14.4, p<0.0037), bingeing/purging anorexia nervosa (24.2±5.6, p<0.001), recovered restrictive anorexia nervosa (64.2±16.1, p = 0.01) and healthy obese patients (51±3.2, p<0.001) compared to controls (187.7±28.6). Bulimic patients (197.4±42.7) and constitutional thinness patients (264.3±35.8) were similar to controls. Conclusions Low IL-7 is part of the adaptive profile in restrictive-type anorexia nervosa, confirming its difference with constitutional thinness. Healthy obesity, with low IL-7, is once again in mirror image of constitutional thinness with normal high IL-7.
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Affiliation(s)
- Natacha Germain
- Division of Endocrinology, Diabetes, Metabolism and Eating Disorders, CHU Saint-Etienne, Saint-Etienne, France
- TAPE (Eating Disorders, Addictions & Extreme Bodyweight) Research Group EA 7423, Saint-Etienne, France
- * E-mail:
| | - Odile Viltart
- Univ. Lille, INSERM, CHU Lille, UMR-S 1172 - JPArc - Jean-Pierre AUBERT Research Center, Neurosciences and Cancer, F-59000, Lille, France
| | - Anne Loyens
- Univ. Lille, INSERM, CHU Lille, UMR-S 1172 - JPArc - Jean-Pierre AUBERT Research Center, Neurosciences and Cancer, F-59000, Lille, France
| | - Céline Bruchet
- Division of Endocrinology, Diabetes, Metabolism and Eating Disorders, CHU Saint-Etienne, Saint-Etienne, France
- TAPE (Eating Disorders, Addictions & Extreme Bodyweight) Research Group EA 7423, Saint-Etienne, France
| | - Katia Nadin
- Division of Endocrinology, Diabetes, Metabolism and Eating Disorders, CHU Saint-Etienne, Saint-Etienne, France
- TAPE (Eating Disorders, Addictions & Extreme Bodyweight) Research Group EA 7423, Saint-Etienne, France
| | - Isabelle Wolowczuk
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR8204 - CIIL - Center for Infection and Immunity of Lille, F-59000, Lille, France
| | - Bruno Estour
- Division of Endocrinology, Diabetes, Metabolism and Eating Disorders, CHU Saint-Etienne, Saint-Etienne, France
- TAPE (Eating Disorders, Addictions & Extreme Bodyweight) Research Group EA 7423, Saint-Etienne, France
| | - Bogdan Galusca
- Division of Endocrinology, Diabetes, Metabolism and Eating Disorders, CHU Saint-Etienne, Saint-Etienne, France
- TAPE (Eating Disorders, Addictions & Extreme Bodyweight) Research Group EA 7423, Saint-Etienne, France
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Abstract
When eating control is overridden by hedonic reward, a condition of obesity dyshomeostasis occurs. Appetitive hedonic reward is a natural response to an obesogenic environment containing endemic stress and easily accessible and palatable high-energy foods and beverages. Obesity dyshomeostasis is mediated by the prefrontal cortex, amygdala and hypothalamic-pituitary-adrenal axis. The ghrelin axis provides the perfect signalling system for feeding dyshomeostasis, affect control and hedonic reward. Dyshomeostasis plays a central role in obesity causation, the addictions and chronic conditions and in persons with diverse bodies. Prevention and treatment efforts that target sources of dyshomeostasis provide ways of reducing adiposity, ameliorating the health impacts of addiction and raising the quality of life in people suffering from chronic stress.
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McMillan CJ, Zapata RC, Chelikani PK, Snead ECR, Cosford K. Circulating concentrations of glucagon-like peptide 1, glucose-dependent insulinotropic peptide, peptide YY, and insulin in client-owned lean, overweight, and diabetic cats. Domest Anim Endocrinol 2016; 54:85-94. [PMID: 26609567 DOI: 10.1016/j.domaniend.2015.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 10/02/2015] [Accepted: 10/05/2015] [Indexed: 12/25/2022]
Abstract
Our objectives were to measure plasma concentrations of glucagon-like peptide 1 (GLP-1), glucose-dependent insulinotropic peptide (GIP), and peptide YY (PYY) in client-owned newly diagnosed diabetic cats and nondiabetic lean or overweight cats and to determine whether circulating concentrations of these hormones differed between study groups and if they increased postprandially as seen in other species. A total of 31 cats were recruited and placed into 1 of 3 study groups: lean (body condition score 4-5 on a scale of 1-9; n = 10), overweight (body condition score 6-8; n = 11), or diabetic (n = 10). Diabetics were newly diagnosed and had not had prior insulin therapy. Preprandial (fasting) and postprandial (60 min after meal) plasma hormone and glucose concentrations were measured at baseline and 2 and 4 wk. All cats were exclusively fed a commercially available high-protein and low-carbohydrate diet commonly prescribed to feline diabetic patients for 2 wk before the 2-wk assessment and continued through the 4-wk assessment. Results showed that plasma concentrations of GLP-1, GIP, PYY, and insulin increased in general after a meal in all study groups. Plasma PYY concentrations did not differ (P > 0.10) between study groups. Diabetics had greater plasma concentrations of GLP-1 and GIP compared with the other study groups at baseline (P < 0.05), and greater preprandial and postprandial GLP-1 concentrations than lean cats at 2 and 4 wk (P < 0.05). Preprandial plasma GIP concentrations were greater in diabetics than obese and lean (P < 0.05) cats at week 4. Postprandial plasma GIP concentrations in diabetics were greater than lean (P < 0.05) at week 2 and obese and lean cats (P < 0.05) at week 4. Together, our findings suggest that diabetic status is an important determinant of circulating concentrations of GLP-1 and GIP, but not PYY, in cats. The role of GLP-1, GIP, and PYY in the pathophysiology of feline obesity and diabetes remains to be determined.
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Affiliation(s)
- C J McMillan
- Department of Veterinary Clinical and Diagnostic Sciences, University of Calgary Veterinary Medicine, Calgary, Canada.
| | - R C Zapata
- Department of Production Animal Health, University of Calgary Veterinary Medicine, Calgary, Canada
| | - P K Chelikani
- Department of Production Animal Health, University of Calgary Veterinary Medicine, Calgary, Canada
| | - E C R Snead
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - K Cosford
- Western Veterinary Specialists and Emergency Centre, Calgary, Canada
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Irizarry KA, Bain J, Butler MG, Ilkayeva O, Muehlbauer M, Haqq AM, Freemark M. Metabolic profiling in Prader-Willi syndrome and nonsyndromic obesity: sex differences and the role of growth hormone. Clin Endocrinol (Oxf) 2015; 83:797-805. [PMID: 25736874 PMCID: PMC4560678 DOI: 10.1111/cen.12766] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 01/21/2015] [Accepted: 02/26/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To identify metabolic factors controlling appetite and insulin sensitivity in PWS and assess effects of GH treatment. METHODS We compared amino acids, fatty acids and acylcarnitines in GH-treated and untreated PWS children and obese and lean controls to identify biomarkers associated with ghrelin, peptide YY and markers of insulin sensitivity (adiponectin and HOMA-IR). RESULTS Compared with obese controls (OC), children with PWS had fasting hyperghrelinaemia, hyperadiponectinaemia, hypoinsulinaemia and increased ghrelin/PYY. Hyperghrelinaemia, hyperadiponectinaemia and hypoinsulinaemia were more striking in PWS females than males, and decreases in BCAA were detected only in PWS females. GH-treated PWS subjects had lower leptin and higher IGF-1 and adiponectin than untreated subjects; fasting ghrelin, PYY and insulin levels were comparable. Ghrelin correlated inversely with BCAA in PWS but not OC. Adiponectin correlated negatively with BMIz and HOMA-IR in PWS; in contrast, adiponectin correlated more strongly with BCAA than BMIz or HOMA-IR in OC. CONCLUSIONS BCAA levels were lower in PWS females than OC females and correlated inversely with ghrelin. Low BCAA in PWS females may promote hyperghrelinaemia and hyperphagia, while hyperadiponectinaemia may maintain insulin sensitivity despite excess weight gain. GH treatment may reduce leptin and increase adiponectin, but does not affect fasting ghrelin or PYY.
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Affiliation(s)
- Krystal A. Irizarry
- Division of Pediatric Endocrinology and Diabetes, Duke University Medical Center, Durham, NC 27710, USA
| | - James Bain
- Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
- Sarah W. Stedman Nutrition and Metabolism Center and the Duke Molecular Physiology Institute, Duke University, Durham, NC 27710, USA
| | - Merlin G. Butler
- Departments of Pediatrics, Psychiatry and Behavioral Sciences, Kansas University Medical Center, Kansas City, KS 66160, USA
| | - Olga Ilkayeva
- Sarah W. Stedman Nutrition and Metabolism Center and the Duke Molecular Physiology Institute, Duke University, Durham, NC 27710, USA
| | - Michael Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center and the Duke Molecular Physiology Institute, Duke University, Durham, NC 27710, USA
| | - Andrea M. Haqq
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Michael Freemark
- Division of Pediatric Endocrinology and Diabetes, Duke University Medical Center, Durham, NC 27710, USA
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Jensen DE, Nguo K, Baxter KA, Cardinal JW, King NA, Ware RS, Truby H, Batch JA. Fasting gut hormone levels change with modest weight loss in obese adolescents. Pediatr Obes 2015; 10:380-7. [PMID: 25559355 DOI: 10.1111/ijpo.275] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 09/27/2014] [Accepted: 10/13/2014] [Indexed: 02/02/2023]
Abstract
BACKGROUND Gut hormones change with weight loss in adults but are not well studied in obese youth. OBJECTIVE The primary aim was to evaluate how gut hormones and subjective appetite measure change with dietary weight loss in obese adolescents. METHODS Participants were a subset of those taking part in the 'Eat Smart Study'. They were aged 10-17 years with body mass index (BMI) > 90th centile and were randomized to one of three groups: wait-listed control, structured reduced carbohydrate or structured low-fat dietary intervention for 12 weeks. Outcomes were fasting glucose, insulin, leptin, adiponectin, total amylin, acylated ghrelin, active glucagon-like peptide-1, glucose-dependent insulinotropic polypeptide (GIP), pancreatic polypeptide (PP) and total peptide tyrosine-tyrosine. Pre- and postprandial subjective sensations of appetite were assessed using visual analogue scales. RESULTS Of 87 'Eat Smart' participants, 74 participated in this sub-study. The mean (standard deviation) BMI z-score was 2.1 (0.4) in the intervention groups at week 12 compared with 2.2 (0.4) in the control group. Fasting insulin (P = 0.05) and leptin (P = 0.03) levels decreased, while adiponectin levels increased (P = 0.05) in the intervention groups compared with control. The intervention groups were not significantly different from each other. A decrease in BMI z-score at week 12 was associated with decreased fasting insulin (P < 0.001), homeostatic model of assessment-insulin resistance (P < 0.001), leptin (P < 0.001), total amylin (P = 0.03), GIP (P = 0.01), PP (P = 0.02) and increased adiponectin (P < 0.001). There was no significant difference in appetite sensations. CONCLUSIONS Modest weight loss in obese adolescents leads to changes in some adipokines and gut hormones that may favour weight regain.
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Affiliation(s)
- D E Jensen
- Children's Health Queensland Hospital and Health Service, Department of Endocrinology and Diabetes, Royal Children's Hospital, Herston, Queensland, Australia.,Queensland Children's Medical Research Institute, University of Queensland, Herston, Queensland, Australia
| | - K Nguo
- Department of Nutrition and Dietetics, Monash University, Clayton, Victoria, Australia
| | - K A Baxter
- Children's Nutrition Research Centre, University of Queensland, Herston, Queensland, Australia
| | - J W Cardinal
- Chemical Pathology, Pathology Queensland, Herston, Queensland, Australia
| | - N A King
- Institute of Health and Biomedical Innovation, School of Exercise and Nutrition Sciences, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - R S Ware
- Queensland Children's Medical Research Institute, University of Queensland, Herston, Queensland, Australia.,School of Population Health, University of Queensland, Herston, Queensland, Australia
| | - H Truby
- Department of Nutrition and Dietetics, Monash University, Clayton, Victoria, Australia
| | - J A Batch
- Children's Health Queensland Hospital and Health Service, Department of Endocrinology and Diabetes, Royal Children's Hospital, Herston, Queensland, Australia.,Queensland Children's Medical Research Institute, University of Queensland, Herston, Queensland, Australia
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50
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Horner K, Lee S. Appetite-related peptides in childhood and adolescence: role of ghrelin, PYY, and GLP-1. Appl Physiol Nutr Metab 2015; 40:1089-99. [PMID: 26466085 DOI: 10.1139/apnm-2015-0050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
During childhood and adolescence, a number of factors, including age, puberty, sex, race, and body composition, may contribute to differences in satiety, food intake, and appetite-related peptides. These peptides include the orexigenic peptide ghrelin and anorexigenic gut peptides peptide YY (PYY) and glucagon-like peptide-1 (GLP-1). For example, lower fasting ghrelin levels, lower postprandial ghrelin suppression, and blunted PYY and GLP-1 responses to food intake could contribute to a dysregulation of appetite in already obese children and adolescents. Whereas, changes in these peptides observed during puberty could facilitate growth. A greater understanding of the major moderating factors of appetite-related peptides in the pediatric population is essential to improve interpretation of study findings and for effective tailoring of strategies targeting appetite control to individuals. While more studies are needed, there is some evidence to suggest that exercise-based lifestyle interventions could be a potential therapeutic strategy to improve appetite-peptide profiles in overweight and obese children and adolescents. The aim of this review is (i) to discuss the potential moderating factors of ghrelin, PYY, and GLP-1, including age and puberty, sex, race and body composition; and (ii) to examine the effects of exercise interventions on these appetite-related gut peptides in children and adolescents.
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Affiliation(s)
- Katy Horner
- Division of Weight Management and Wellness, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15226, USA.,Division of Weight Management and Wellness, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15226, USA
| | - SoJung Lee
- Division of Weight Management and Wellness, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15226, USA.,Division of Weight Management and Wellness, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15226, USA
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