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Kucukdereli H, Amsalem O, Pottala T, Lim M, Potgieter L, Hasbrouck A, Lutas A, Andermann ML. Repeated stress triggers seeking of a starvation-like state in anxiety-prone female mice. Neuron 2024; 112:2130-2141.e7. [PMID: 38642553 PMCID: PMC11287784 DOI: 10.1016/j.neuron.2024.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 01/28/2024] [Accepted: 03/27/2024] [Indexed: 04/22/2024]
Abstract
Elevated anxiety often precedes anorexia nervosa and persists after weight restoration. Patients with anorexia nervosa often describe self-starvation as pleasant, potentially because food restriction can be anxiolytic. Here, we tested whether repeated stress can cause animals to prefer a starvation-like state. We developed a virtual reality place preference paradigm in which head-fixed mice can voluntarily seek a starvation-like state induced by optogenetic stimulation of hypothalamic agouti-related peptide (AgRP) neurons. Prior to stress exposure, males but not females showed a mild aversion to AgRP stimulation. Strikingly, following multiple days of stress, a subset of females developed a strong preference for AgRP stimulation that was predicted by high baseline anxiety. Such stress-induced changes in preference were reflected in changes in facial expressions during AgRP stimulation. Our study suggests that stress may cause females predisposed to anxiety to seek a starvation state and provides a powerful experimental framework for investigating the underlying neural mechanisms.
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Affiliation(s)
- Hakan Kucukdereli
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Oren Amsalem
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Trent Pottala
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Michelle Lim
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Leilani Potgieter
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Amanda Hasbrouck
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Andrew Lutas
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Mark L Andermann
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; Department of Neurobiology, Harvard Medical School, Boston, MA, 02115, USA.
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Conn K, Huang K, Gorrell S, Foldi CJ. A transdiagnostic and translational framework for delineating the neuronal mechanisms of compulsive exercise in anorexia nervosa. Int J Eat Disord 2024; 57:1406-1417. [PMID: 38174745 PMCID: PMC11222308 DOI: 10.1002/eat.24130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
OBJECTIVE The development of novel treatments for anorexia nervosa (AN) requires a detailed understanding of the biological underpinnings of specific, commonly occurring symptoms, including compulsive exercise. There is considerable bio-behavioral overlap between AN and obsessive-compulsive disorder (OCD), therefore it is plausible that similar mechanisms underlie compulsive behavior in both populations. While the association between these conditions is widely acknowledged, defining the shared mechanisms for compulsive behavior in AN and OCD requires a novel approach. METHODS We present an argument that a better understanding of the neurobiological mechanisms that underpin compulsive exercise in AN can be achieved in two critical ways. First, by applying a framework of the neuronal control of OCD to exercise behavior in AN, and second, by taking better advantage of the activity-based anorexia (ABA) rodent model to directly test this framework in the context of feeding pathology. RESULTS A cross-disciplinary approach that spans preclinical, neuroimaging, and clinical research as well as compulsive neurocircuitry and behavior can advance our understanding of when, why, and how compulsive exercise develops in the context of AN and provide targets for novel treatment strategies. DISCUSSION In this article, we (i) link the expression of compulsive behavior in AN and OCD via a transition between goal-directed and habitual behavior, (ii) present disrupted cortico-striatal circuitry as a key substrate for the development of compulsive behavior in both conditions, and (iii) highlight the utility of the ABA rodent model to better understand the mechanisms of compulsive behavior relevant to AN. PUBLIC SIGNIFICANCE Individuals with AN who exercise compulsively are at risk of worse health outcomes and have poorer responses to standard treatments. However, when, why, and how compulsive exercise develops in AN remains inadequately understood. Identifying whether the neural circuitry underlying compulsive behavior in OCD also controls hyperactivity in the activity-based anorexia model will aid in the development of novel eating disorder treatment strategies for this high-risk population.
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Affiliation(s)
- K Conn
- Monash University, Department of Physiology, 26 Innovation Walk, 3800, Clayton, Australia
- Monash Biomedicine Discovery Institute, 23 Innovation Walk, 3800, Clayton, Australia
| | - K Huang
- Monash University, Department of Physiology, 26 Innovation Walk, 3800, Clayton, Australia
- Monash Biomedicine Discovery Institute, 23 Innovation Walk, 3800, Clayton, Australia
| | - S Gorrell
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, 675 18th street, San Francisco, CA 94143, USA
| | - CJ Foldi
- Monash University, Department of Physiology, 26 Innovation Walk, 3800, Clayton, Australia
- Monash Biomedicine Discovery Institute, 23 Innovation Walk, 3800, Clayton, Australia
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Avraham Y, Shapira-Furman T, Saklani R, Van Heukelom B, Carmel M, Vorobiev L, Lipsker L, Zwas DR, Berry EM, Domb AJ. Sustained insulin treatment restoring metabolic status, body weight, and cognition in an anorexia nervosa-like animal model in mice. Behav Brain Res 2024; 466:115001. [PMID: 38642861 DOI: 10.1016/j.bbr.2024.115001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/22/2024]
Abstract
INTRODUCTION Anorexia Nervosa (AN) is a psycho-socio-biological disease characterized by severe weight loss as result of dieting and hyperactivity. Effective treatments are scarce, despite its significant prevalence and mortality. AN patients show lower basal insulin levels and increased metabolic clearance, leading to weight loss, cognitive deficits, and hormonal imbalances. Low-dose polymer insulin could potentially reverse these effects by restoring brain function, reducing fear of weight gain, encouraging food intake, and restoring fat depots. This study evaluates an insulin delivery system designed for sustained release and AN treatment. METHODS AN-like model was established through dietary restriction (DR). On days 1-25, mice were on DR, and on days 26-31 they were on ad libitum regimen. An insulin-loaded delivery system was administered subcutaneously (1% w/w insulin). The impact of insulin treatment on gene expression in the hippocampus (cognition, regulation of stress, neurogenesis) and hypothalamus (eating behavior, mood) was assessed. Behavioral assays were conducted to evaluate motor activity and cognitive function. RESULTS The delivery system demonstrated sustained insulin release, maintaining therapeutic plasma levels. Diet restriction mice treated with the insulin delivery system showed body weight restoration. Gene expression analysis revealed enhanced expression of CB1 and CB2 genes associated with improved eating behavior and cognition, while POMC expression was reduced. Insulin-polymer treatment restored cognitive function and decreased hyperactivity in the AN-like model. CONCLUSION The PSA-RA-based insulin delivery system effectively restores metabolic balance, body weight, and cognitive function in the AN model. Its ability to steadily release insulin makes it a promising candidate for AN treatment."
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Affiliation(s)
- Yosefa Avraham
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel.
| | - Tovi Shapira-Furman
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Ravi Saklani
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Bob Van Heukelom
- Department of Neurology, Gelderse Vallei Hospital, 6716 RP, the Netherlands
| | - Moshe Carmel
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Lia Vorobiev
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Leah Lipsker
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Donna R Zwas
- Linda Joy Pollin Cardiovascular Wellness Center for Women, Heart Institute, Hadassah University Medical Center, Jerusalem, Israel
| | - Elliot M Berry
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
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Brooks SJ, Dahl K, Dudley-Jones R, Schiöth HB. A neuroinflammatory compulsivity model of anorexia nervosa (NICAN). Neurosci Biobehav Rev 2024; 159:105580. [PMID: 38417395 DOI: 10.1016/j.neubiorev.2024.105580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/31/2024] [Accepted: 02/09/2024] [Indexed: 03/01/2024]
Affiliation(s)
- S J Brooks
- Department of Surgical Sciences, Uppsala University, Sweden; School of Psychology, Liverpool John Moores University, UK; Neuroscience Research Laboratory (NeuRL), Department of Psychology, School of Human and Community Development, University of the Witwatersrand, Johannesburg, South Africa.
| | - K Dahl
- Department of Surgical Sciences, Uppsala University, Sweden
| | - R Dudley-Jones
- School of Psychology, Liverpool John Moores University, UK
| | - H B Schiöth
- Department of Surgical Sciences, Uppsala University, Sweden
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Camacho-Barcia L, Giel KE, Jiménez-Murcia S, Álvarez Pitti J, Micali N, Lucas I, Miranda-Olivos R, Munguia L, Tena-Sempere M, Zipfel S, Fernández-Aranda F. Eating disorders and obesity: bridging clinical, neurobiological, and therapeutic perspectives. Trends Mol Med 2024; 30:361-379. [PMID: 38485648 DOI: 10.1016/j.molmed.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 04/13/2024]
Abstract
Eating disorders (EDs) and obesity are complex health conditions sharing various risk and maintenance factors, intensified in cases of comorbidity. This review explores the similarities and connections between these conditions, examining different facets from a multidisciplinary perspective, among them comorbidities, metabolic and psychological factors, neurobiological aspects, and management and therapy implications. We aim to investigate the common characteristics and complexities of weight and EDs and explore their interrelationships in individuals who experience both. The rising prevalence of EDs in people with obesity necessitates integrated approaches to study this comorbidity and to identify and analyze both common and distinct features of these conditions. This review may offer new opportunities for simultaneous prevention and management approaches, as well as future lines of research.
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Affiliation(s)
- Lucia Camacho-Barcia
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain.
| | - Katrin Elisabeth Giel
- Department of Psychosomatic Medicine, University of Tübingen, Tübingen, Germany; Centre of Excellence for Eating Disorders (KOMET), University of Tübingen, Tübingen, Germany; German Center for Mental Health (DZPG), Germany
| | - Susana Jiménez-Murcia
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain; Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Julio Álvarez Pitti
- Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain; Pediatric Department, Consorcio Hospital General, University of Valencia, Valencia, Spain; Innovation in Paediatrics and Technologies-iPEDITEC- research group, Research Foundation, Consorcio Hospital General, University of Valencia, Valencia, Spain
| | - Nadia Micali
- Eating Disorders Research Unit, Psychiatric Centre Ballerup, Mental Health Services in the Capital Region of Denmark, Copenhagen, Denmark; Great Ormond Street Institute of Child Health, University College London, London, UK; Institute of Biological Psychiatry, Psychiatric Center Sct. Hans, Mental Health Services in the Capital Region of Denmark, Copenhagen, Denmark
| | - Ignacio Lucas
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Romina Miranda-Olivos
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Lucero Munguia
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Manuel Tena-Sempere
- Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
| | - Stephan Zipfel
- Department of Psychosomatic Medicine, University of Tübingen, Tübingen, Germany; Centre of Excellence for Eating Disorders (KOMET), University of Tübingen, Tübingen, Germany; German Center for Mental Health (DZPG), Germany
| | - Fernando Fernández-Aranda
- Clinical Psychology Department, Bellvitge University Hospital, Barcelona, Spain; Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain; Ciber Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain; Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain.
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Li J, Temizer R, Chen YW, Aoki C. Ketamine ameliorates activity-based anorexia of adolescent female mice through changes in GluN2B-containing NMDA receptors at postsynaptic cytoplasmic locations of pyramidal neurons and interneurons of medial prefrontal cortex. Brain Struct Funct 2024; 229:323-348. [PMID: 38170266 DOI: 10.1007/s00429-023-02740-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 11/21/2023] [Indexed: 01/05/2024]
Abstract
Anorexia nervosa (AN) is a mental illness with high rates of mortality and relapse, and no approved pharmacotherapy. Using the activity-based anorexia (ABA) model of AN, we previously showed that a single sub-anesthetic intraperitoneal injection of ketamine (30 mg/kg-KET, but not 3 mg/kg-KET), has an immediate and long-lasting effect of reducing anorexia-like behavior among adolescent female mice. We also showed previously that excitatory outflow from medial prefrontal cortex (mPFC) engages hunger-evoked hyperactivity, leading to the ABA condition of severe weight loss. Ketamine is known to target GluN2B-containing NMDARs (NR2B). Might synaptic plasticity involving NR2B in mPFC contribute to ketamine's ameliorative effects? We addressed this question through electron microscopic immunocytochemical quantification of GluN2B at excitatory synapses of pyramidal neurons (PN) and GABAergic interneurons (IN) in mPFC layer 1 of animals that underwent recovery from a second ABA induction (ABA2), 22 days after ketamine injection during the first ABA induction. The 30 mg/kg-KET evoked synaptic plasticity that differed for PN and IN, with changes revolving the cytoplasmic reserve pool of NR2B more than the postsynaptic membrane pool. Those individuals that suppressed hunger-evoked wheel running the most and increased food consumption during recovery from ABA2 the most showed the greatest increase of NR2B at PN and IN excitatory synapses. We hypothesize that 30 mg/kg-KET promotes long-lasting changes in the reserve cytoplasmic pool of NR2B that enables activity-dependent rapid strengthening of mPFC circuits underlying the more adaptive behavior of suppressed running and enhanced food consumption, in turn supporting better weight restoration.
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Affiliation(s)
- Jennifer Li
- Center for Neural Science, New York University, New York, NY, USA
| | - Rose Temizer
- Center for Neural Science, New York University, New York, NY, USA
| | - Yi-Wen Chen
- Center for Neural Science, New York University, New York, NY, USA
| | - Chiye Aoki
- Center for Neural Science, New York University, New York, NY, USA.
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Salaün C, Courvalet M, Rousseau L, Cailleux K, Breton J, Bôle-Feysot C, Guérin C, Huré M, Goichon A, do Rego JC, Déchelotte P, Ribet D, Achamrah N, Coëffier M. Sex-dependent circadian alterations of both central and peripheral clock genes expression and gut-microbiota composition during activity-based anorexia in mice. Biol Sex Differ 2024; 15:6. [PMID: 38217033 PMCID: PMC10785476 DOI: 10.1186/s13293-023-00576-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 12/16/2023] [Indexed: 01/14/2024] Open
Abstract
RATIONALE Patients with anorexia nervosa (AN) often present sleep disorders and circadian hormonal dysregulation. The role of the microbiota-gut-brain axis in the regulation of feeding behavior has emerged during the last decades but its relationships with the circadian rhythm remains poorly documented. Thus, we aimed to characterize the circadian clock genes expression in peripheral and central tissues in the activity-based anorexia mouse model (ABA), as well as the dynamics of the gut-microbiota composition. METHODS From day 1 to day 17, male and female C57Bl/6 mice were submitted or not to the ABA protocol (ABA and control (CT) groups), which combines a progressive limited access to food and a free access to a running wheel. At day 17, fasted CT and ABA mice were euthanized after either resting (EoR) or activity (EoA) phase (n = 10-12 per group). Circadian clock genes expression was assessed by RT-qPCR on peripheral (liver, colon and ileum) and central (hypothalamic suprachiasmatic nucleus or SCN) tissues. Cecal bacterial taxa abundances were evaluated by qPCR. Data were compared by two-way ANOVA followed by post-tests. RESULTS ABA mice exhibited a lower food intake, a body weight loss and an increase of diurnal physical activity that differ according with the sex. Interestingly, in the SCN, only ABA female mice exhibited altered circadian clock genes expression (Bmal1, Per1, Per2, Cry1, Cry2). In the intestinal tract, modification of clock genes expression was also more marked in females compared to males. For instance, in the ileum, female mice showed alteration of Bmal1, Clock, Per1, Per2, Cry1, Cry2 and Rev-erbα mRNA levels, while only Per2 and Cry1 mRNAs were affected by ABA model in males. By contrast, in the liver, clock genes expression was more markedly affected in males compared to females in response to ABA. Finally, circadian variations of gut-bacteria abundances were observed in both male and female mice and sex-dependent alteration were observed in response to the ABA model. CONCLUSIONS This study shows that alteration of circadian clock genes expression at both peripheral and central levels occurs in response to the ABA model. In addition, our data underline that circadian variations of the gut-microbiota composition are sex-dependent.
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Affiliation(s)
- Colin Salaün
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Marine Courvalet
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Léna Rousseau
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Kévin Cailleux
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Jonathan Breton
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Christine Bôle-Feysot
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Charlène Guérin
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Marion Huré
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Alexis Goichon
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Jean-Claude do Rego
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
- Univ Rouen Normandie, Inserm, CNRS, Normandie Univ, HERACLES US 51 UAR 2026, Behavioural Analysis Platform SCAC, 76000, Rouen, France
| | - Pierre Déchelotte
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
- Department of Nutrition, CHU Rouen, 76000, Rouen, France
| | - David Ribet
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
| | - Najate Achamrah
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France
- Department of Nutrition, CHU Rouen, 76000, Rouen, France
| | - Moïse Coëffier
- Univ Rouen Normandie, INSERM, Normandie Univ, ADEN UMR 1073, Nutrition Inflammation and Microbiota Gut Brain Axis, UFR Santé, 22 Boulevard Gambetta, 76183, Rouen Cedex, France.
- Univ Rouen Normandie, Institute for Research and Innovation in Biomedicine (IRIB), 76000, Rouen, France.
- Department of Nutrition, CHU Rouen, 76000, Rouen, France.
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Tezenas du Montcel C, Duriez P, Cao J, Lebrun N, Ramoz N, Viltart O, Gorwood P, Tolle V. The role of dysregulated ghrelin/LEAP-2 balance in anorexia nervosa. iScience 2023; 26:107996. [PMID: 37867951 PMCID: PMC10587521 DOI: 10.1016/j.isci.2023.107996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/24/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
LEAP-2 is a ghrelin antagonist with an anorexigenic drive. This study investigates the evolution of plasma ghrelin and LEAP-2 concentrations in 29 patients with anorexia nervosa (AN) before and after refeeding and compares it to physiological adaptations during fasting in healthy controls or to mouse model of chronic food restriction and refeeding. Acute and chronic food restriction decrease LEAP-2 and increase ghrelin concentrations in both humans and mice, while patients with AN displayed higher ghrelin and LEAP-2 concentrations before than after refeeding (p = 0.043). After 6 months follow-up, patients with unstable weight gain (n = 17) had significantly decreased LEAP-2 concentrations after refeeding (p = 0.044), in contrast to patients with stable weight gain (n = 12). We provide evidence that the ghrelin/LEAP-2 system is not regulated according to the nutritional status in AN, in contrast to what is physiologically expected when coping with food restriction.
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Affiliation(s)
- Chloé Tezenas du Montcel
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
- Clinique des Maladies Mentales et de l’Encéphale, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 75014 Paris, France
| | - Philibert Duriez
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
- Clinique des Maladies Mentales et de l’Encéphale, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 75014 Paris, France
| | - Jingxian Cao
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
| | - Nicolas Lebrun
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
| | - Nicolas Ramoz
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
| | - Odile Viltart
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
- Université de Lille, SCALab - Sciences Cognitives et Sciences Affectives, UMR CNRS 9193, PsySEF département, 59653 Lille, France
| | - Philip Gorwood
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
- Clinique des Maladies Mentales et de l’Encéphale, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 75014 Paris, France
| | - Virginie Tolle
- Université Paris Cité, UMR-S 1266 INSERM, Institut de Psychiatrie et Neuroscience de Paris (IPNP), 75014 Paris, France
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9
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Staffeld A, Gill S, Zimmermann A, Böge N, Schuster K, Lang S, Kipp M, Palme R, Frintrop L. Establishment of a Murine Chronic Anorexia Nervosa Model. Cells 2023; 12:1710. [PMID: 37443744 PMCID: PMC10340390 DOI: 10.3390/cells12131710] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Anorexia nervosa (AN) is associated with hyperactivity, amenorrhea, and brain atrophy. The underlying pathophysiology is mostly unknown, and new targets for therapeutic interventions are needed. This study aimed to systematically establish a murine AN model with the parameter extent of starvation, animal age, and length of starvation for functional studies. The activity-based anorexia (ABA) model combines food restriction with running wheel access. Early adolescent and adolescent mice received 40% of their baseline food intake until a 20% or 25% weight reduction was reached (acute starvation). To mimic chronic starvation, body weight loss was maintained for another two weeks. Running activity was examined using wheel sensors, while amenorrhea was investigated by analysis of vaginal smears. Brain sections were used to analyze cerebral cortex volumes. Acute starvation did not lead to either AN-related symptoms, whereas chronic starvation led to hyperactivity and amenorrhea except in the adolescent cohort with 20% weight reduction. Only ABA mice with 25% weight reduction revealed a cortex volume reduction. The optimal parameters to mirror AN-related symptoms included a 25% weight reduction, early adolescent or adolescent mice, and chronic starvation. The ABA model enables functional analysis of the impact of chronic AN on the underlying hormonal, behavioral, and brain pathophysiology.
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Affiliation(s)
- Anna Staffeld
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Sadaf Gill
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Annelie Zimmermann
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Natalie Böge
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Katharina Schuster
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Stephan Lang
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Rupert Palme
- Unit of Physiology, Pathophysiology and Experimental Endocrinology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria
| | - Linda Frintrop
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
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10
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Trinh S, Kogel V, Kneisel L, Müller-Limberger E, Herpertz-Dahlmann B, Beyer C, Seitz J. Gut Microbiota and Brain Alterations after Refeeding in a Translational Anorexia Nervosa Rat Model. Int J Mol Sci 2023; 24:ijms24119496. [PMID: 37298445 DOI: 10.3390/ijms24119496] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/23/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023] Open
Abstract
The gut microbiota composition is causally involved in the regulation of body weight. Through the gut-brain axis, microbiota play a role in psychiatric disorders including anorexia nervosa (AN). Previously, we showed microbiome changes to be associated with brain volume and astrocyte reductions after chronic starvation in an AN animal model. Here, we analyzed whether these alterations are reversible after refeeding. The activity-based anorexia (ABA) model is a well-established animal model that mimics several symptoms of AN. Fecal samples and the brain were analyzed. Like previous results, significant alterations in the microbiome were observed after starvation. After refeeding, including the normalization of food intake and body weight, α- and β-diversity, as well as the relative abundance of specific genera, were largely normalized in starved rats. Brain parameters appeared to normalize alongside microbial restitution with some aberrations in the white matter. We confirmed our previous findings of microbial dysbiosis during starvation and showed a high degree of reversibility. Thus, microbiome alterations in the ABA model appear to be mostly starvation-related. These findings support the usefulness of the ABA model in investigating starvation-induced effects on the microbiota-gut-brain axis to help comprehend the pathomechanisms of AN and potentially develop microbiome-targeted treatments for patients.
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Affiliation(s)
- Stefanie Trinh
- Institute of Neuroanatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany
| | - Vanessa Kogel
- Institute of Neuroanatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany
| | - Lilly Kneisel
- Institute of Neuroanatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany
| | | | - Beate Herpertz-Dahlmann
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, RWTH Aachen University, Neuenhofer Weg 21, 52074 Aachen, Germany
| | - Cordian Beyer
- Institute of Neuroanatomy, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany
| | - Jochen Seitz
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, RWTH Aachen University, Neuenhofer Weg 21, 52074 Aachen, Germany
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11
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Kucukdereli H, Amsalem O, Pottala T, Lim M, Potgieter L, Hasbrouck A, Lutas A, Andermann ML. Chronic stress triggers seeking of a starvation-like state in anxiety-prone female mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.16.541013. [PMID: 37292650 PMCID: PMC10245771 DOI: 10.1101/2023.05.16.541013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Elevated anxiety often precedes anorexia nervosa and persists after weight restoration. Patients with anorexia nervosa often describe hunger as pleasant, potentially because food restriction can be anxiolytic. Here, we tested whether chronic stress can cause animals to prefer a starvation-like state. We developed a virtual reality place preference paradigm in which head-fixed mice can voluntarily seek a starvation-like state induced by optogenetic stimulation of hypothalamic agouti-related peptide (AgRP) neurons. Prior to stress induction, male but not female mice showed mild aversion to AgRP stimulation. Strikingly, following chronic stress, a subset of females developed a strong preference for AgRP stimulation that was predicted by high baseline anxiety. Such stress-induced changes in preference were reflected in changes in facial expressions during AgRP stimulation. Our study suggests that stress may cause females predisposed to anxiety to seek a starvation state, and provides a powerful experimental framework for investigating the underlying neural mechanisms.
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12
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Kooij KL, Luijendijk MCM, Drost L, Platenburg G, van Elburg A, Adan RAH. Intranasal administration of olanzapine has beneficial outcome in a rat activity-based anorexia model. Eur Neuropsychopharmacol 2023; 71:65-74. [PMID: 37031523 DOI: 10.1016/j.euroneuro.2023.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/15/2023] [Accepted: 03/10/2023] [Indexed: 04/11/2023]
Abstract
The atypical antipsychotic drug olanzapine is prescribed despite clinical studies on olanzapine treatment showing mixed results on treatment efficacy in anorexia nervosa. We investigated the effect of systemic and intranasal administration of olanzapine in the activity-based anorexia (ABA) model. Rats were habituated to a running wheel and exposed to the ABA model while treated with olanzapine. During ABA rats had 1.5 h of daily access to food and ad libitum access to a running wheel for seven consecutive days. Olanzapine was administered via an osmotic minipump (1, 2.75, and 7.5 mg/kg) or intranasally 2 h before dark onset (1 and 2.75 mg/kg). We monitored body weight, food intake, wheel revolutions, body temperature, and adipose tissue. We found 2.75 and 7.5 mg/kg systemic olanzapine decreased wheel revolutions during ABA. Relative adipose tissue mass was increased in the 7.5 mg/kg olanzapine-treated group while body weight, food intake, and body temperature were unaltered by the systemic olanzapine. 1 and 2.75 mg/kg intranasal olanzapine diminished wheel revolutions and body temperature during the first 2 h after administration. The intranasal olanzapine-treated rats had a higher body weight at the end of ABA. We find that olanzapine has beneficial outcomes in the ABA via two administration routes by acting mainly on running wheel activity. Intranasal olanzapine showed a rapid effect in the first hours after administration in reducing locomotor activity. We recommend further exploring intranasal administration of olanzapine in anorectic patients to assist them in coping with restlessness.
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Affiliation(s)
- Karlijn L Kooij
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands; Altrecht Eating Disorders Rintveld, Zeist, the Netherlands.
| | - Mieneke C M Luijendijk
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands.
| | - Lisa Drost
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | | | - Annemarie van Elburg
- Altrecht Eating Disorders Rintveld, Zeist, the Netherlands; Department of Clinical Psychology, Utrecht University, the Netherlands.
| | - Roger A H Adan
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands; Altrecht Eating Disorders Rintveld, Zeist, the Netherlands; Dept of Neuroscience and Physiology, Sahlgrenska academy, Univ of Gothenborg, Sweden.
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13
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Li J, Chen YW, Aoki C. Ketamine ameliorates activity-based anorexia of adolescent female mice through changes in the prevalence of NR2B-containing NMDA receptors at excitatory synapses that are in opposite directions for of pyramidal neurons versus GABA interneurons In medial prefrontal cortex. RESEARCH SQUARE 2023:rs.3.rs-2514157. [PMID: 36778429 PMCID: PMC9915778 DOI: 10.21203/rs.3.rs-2514157/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A previous study showed that a single sub-anesthetic dose of ketamine (30 mg/kg-KET, IP) has an immediate and long-lasting (>20 days) effect of reducing maladaptive behaviors associated with activity-based anorexia (ABA) among adolescent female mice. This study sought to determine whether synaptic plasticity involving NR2B-containing NMDA receptors (NR2B) at excitatory synapses in the prelimbic region of medial prefrontal cortex (mPFC) contributes to this ameliorative effect. To this end, quantitative electron microscopic analyses of NR2B-subunit immunoreactivity at excitatory synapses of pyramidal neurons (PN) and GABAergic interneurons (GABA-IN) were conducted upon layer 1 of mPFC of the above-described mice that received a single efficacious 30 mg/kg-KET (N=8) versus an inefficacious 3 mg/kg-KET (N=8) dose during the food-restricted day of the first ABA induction (ABA1). Brain tissue was collected after these animals underwent recovery from ABA1, then of recovery from a second ABA induction (ABA2), 22 days after the ketamine injection. For all three parameters used to quantify ABA resilience (increased food consumption, reduced wheel running, body weight gain), 30 mg/kg-KET evoked synaptic plasticity in opposite directions for PN and GABA-IN, with changes at excitatory synapses on GABA-IN dominating the adaptive behaviors more than on PN. The synaptic changes were in directions consistent with changes in the excitatory outflow from mPFC that weaken food consumption-suppression, strengthen wheel running suppression and enhance food consumption. We hypothesize that 30 mg/kg-KET promotes these long-lasting changes in the excitatory outflow from mPFC after acutely blocking the hunger and wheel-access activated synaptic circuits underlying maladaptive behaviors during ABA.
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14
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Possa-Paranhos IC, Catalbas K, Butts J, O’Berry K, Sweeney P. Establishment of Restraint Stress-induced Anorexia and Social Isolation-induced Anorexia Mouse Models. Bio Protoc 2023; 13:e4597. [PMID: 36789167 PMCID: PMC9901481 DOI: 10.21769/bioprotoc.4597] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/25/2022] [Accepted: 01/03/2023] [Indexed: 01/20/2023] Open
Abstract
Anorexia nervosa (AN) is a devastating neuropsychiatric disease with a prevalence rate of approximately 0.3%-1% among women and morbidity and mortality rates among the highest of all neuropsychiatric disorders. The disease etiology is complex but primarily characterized by reduced food intake and body weight, and intense anxiety and fear associated with gaining weight. Existing rodent models of AN are useful and capture features of the disease, but either require specialized genetic mouse models or are difficult to implement in mice. Here, we describe two simple mouse models of stress-induced anorexia that are easy to implement in basic research labs, and capture core features associated with AN, such as reduced food intake in the context of social/physical stress and increased anxiety-related behavior. These protocols provide reproducible and robust assays for stress-induced anorexia and may be implemented with additional assays to probe the neural circuitry mediating the effects of psychological stress on feeding in mice. Graphical abstract.
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Affiliation(s)
- Ingrid Camila Possa-Paranhos
- Department of Molecular and Integrative Physiology, University of Illinois Urbana Champaign, Urbana, Illinois 61801
| | - Kerem Catalbas
- Department of Molecular and Integrative Physiology, University of Illinois Urbana Champaign, Urbana, Illinois 61801
| | - Jared Butts
- Department of Molecular and Integrative Physiology, University of Illinois Urbana Champaign, Urbana, Illinois 61801
| | - Kyle O’Berry
- Department of Molecular and Integrative Physiology, University of Illinois Urbana Champaign, Urbana, Illinois 61801
| | - Patrick Sweeney
- Department of Molecular and Integrative Physiology, University of Illinois Urbana Champaign, Urbana, Illinois 61801
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15
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Ledwos N, Rodas JD, Husain MI, Feusner JD, Castle DJ. Therapeutic uses of psychedelics for eating disorders and body dysmorphic disorder. J Psychopharmacol 2023; 37:3-13. [PMID: 36515406 DOI: 10.1177/02698811221140009] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Clinical use of psychedelics has gained considerable attention, with promising benefits across a range of mental disorders. Current pharmacological and psychotherapeutic treatments for body dysmorphic disorder (BDD) and eating disorders (EDs) have limited efficacy. As such, other treatment options such as psychedelic-assisted therapies are being explored in these clinical groups. AIMS This systematic review evaluates evidence related to the therapeutic potential of psychedelics in individuals diagnosed with BDD and EDs. METHODS Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, we conducted a systematic review of all study designs published to the end of February 2022 that identified changes in ED/BDD symptom severity from psychedelics using validated measures to assess symptom changes. RESULTS Our search detected a total of 372 studies, of which five met inclusion criteria (two exploratory studies, two case reports, and one prospective study). These were included in the data evaluation. Effects of psychedelics on BDD and various ED symptoms were identified mostly through thematic analyses and self-reports. CONCLUSIONS Our findings highlight that more research is needed to determine the safety and efficacy of psychedelics in BDD and EDs and we suggest avenues for future exploration.
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Affiliation(s)
- Nicole Ledwos
- Centre for Complex Interventions, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Justyne D Rodas
- Centre for Complex Interventions, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - M Ishrat Husain
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Jamie D Feusner
- Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - David J Castle
- Centre for Complex Interventions, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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16
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Abstract
Anorexia nervosa is a disorder associated with serious adverse health outcomes, for which there is currently considerable treatment ineffectiveness. Characterised by restrictive eating behaviours, distorted body image perceptions and excessive physical activity, there is growing recognition anorexia nervosa is associated with underlying dysfunction in excitatory and inhibitory neurometabolite metabolism and signalling. This narrative review critically explores the role of N-methyl-D-aspartate receptor-mediated excitatory and inhibitory neurometabolite dysfunction in anorexia nervosa and its associated biomarkers. The existing magnetic resonance spectroscopy literature in anorexia nervosa is reviewed and we outline the brain region-specific neurometabolite changes that have been reported and their connection to anorexia nervosa psychopathology. Considering the proposed role of dysfunctional neurotransmission in anorexia nervosa, the potential utility of zinc supplementation and sub-anaesthetic doses of ketamine in normalising this is discussed with reference to previous research in anorexia nervosa and other neuropsychiatric conditions. The rationale for future research to investigate the combined use of low-dose ketamine and zinc supplementation to potentially extend the therapeutic benefits in anorexia nervosa is subsequently explored and promising biological markers for assessing and potentially predicting treatment response are outlined.
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Gabloffsky T, Gill S, Staffeld A, Salomon R, Power Guerra N, Joost S, Hawlitschka A, Kipp M, Frintrop L. Food Restriction in Mice Induces Food-Anticipatory Activity and Circadian-Rhythm-Related Activity Changes. Nutrients 2022; 14:5252. [PMID: 36558413 PMCID: PMC9782400 DOI: 10.3390/nu14245252] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Anorexia nervosa (AN) is characterized by emaciation, hyperactivity, and amenorrhea. To what extent AN-related symptoms are due to food restriction or neuronal dysfunction is currently unknown. Thus, we investigated the relevance of food restriction on AN-related symptoms. Disrupted circadian rhythms are hypothesized to contribute to the pathophysiology of AN. Starvation was induced by restricting food access in early adolescent or adolescent mice to 40% of their baseline food intake until a 20% weight reduction was reached (acute starvation). To mimic chronic starvation, the reduced weight was maintained for a further 2 weeks. Locomotor activity was analyzed using running wheel sensors. The circadian-rhythm-related activity was measured using the tracking system Goblotrop. Amenorrhea was determined by histological examination of vaginal smears. All cohorts showed an increase in locomotor activity up to 4 h before food presentation (food-anticipatory activity, FAA). While amenorrhea was present in all groups except in early adolescent acutely starved mice, hyperactivity was exclusively found in chronically starved groups. Adolescent chronically starved mice showed a decrease in circadian-rhythm-related activity at night. Chronic starvation most closely mimics AN-related behavioral changes. It appears that the FAA is a direct consequence of starvation. The circadian activity changes might underlie the pathophysiology of AN.
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Affiliation(s)
- Theo Gabloffsky
- Institute of Applied Microelectronics and Computer Engineering, Faculty of Computer Science and Electrical Engineering, University of Rostock, 18119 Rostock, Germany
| | - Sadaf Gill
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Anna Staffeld
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Ralf Salomon
- Institute of Applied Microelectronics and Computer Engineering, Faculty of Computer Science and Electrical Engineering, University of Rostock, 18119 Rostock, Germany
| | - Nicole Power Guerra
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Sarah Joost
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | | | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Linda Frintrop
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
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18
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Abstract
Anorexia is a loss of appetite or an inability to eat and is often associated with eating disorders. However, animal anorexia is physiologically regulated as a part of the life cycle; for instance, during hibernation, migration or incubation. Anorexia nervosa (AN), on the other hand, is a common eating disorder among adolescent females that experience an intense fear of gaining weight due to body image distortion that results in voluntary avoidance of food intake and, thus, severe weight loss. It has been shown that the neurobiology of feeding extends beyond the hypothalamus. The prefrontal cortex (PFC) is involved in food choice and body image perception, both relevant in AN. However, little is known about the neurobiology of AN, and the lack of effective treatments justifies the use of animal models. Glial cells, the dominant population of nerve cells in the central nervous system, are key in maintaining brain homeostasis. Accordingly, recent studies suggest that glial function may be compromised by anorexia. In this review, we summarize recent findings about anorexia and glial cells.
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19
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Frostad S. Are the Effects of Malnutrition on the Gut Microbiota–Brain Axis the Core Pathologies of Anorexia Nervosa? Microorganisms 2022; 10:microorganisms10081486. [PMID: 35893544 PMCID: PMC9329996 DOI: 10.3390/microorganisms10081486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 11/29/2022] Open
Abstract
Anorexia nervosa (AN) is a disabling, costly, and potentially deadly illness. Treatment failure and relapse after treatment are common. Several studies have indicated the involvement of the gut microbiota–brain (GMB) axis. This narrative review hypothesizes that AN is driven by malnutrition-induced alterations in the GMB axis in susceptible individuals. According to this hypothesis, initial weight loss can voluntarily occur through dieting or be caused by somatic or psychiatric diseases. Malnutrition-induced alterations in gut microbiota may increase the sensitivity to anxiety-inducing gastrointestinal hormones released during meals, one of which is cholecystokinin (CCK). The experimental injection of a high dose of its CCK-4 fragment in healthy individuals induces panic attacks, probably via the stimulation of CCK receptors in the brain. Such meal-related anxiety attacks may take part in developing the clinical picture of AN. Malnutrition may also cause increased effects from appetite-reducing hormones that also seem to have roles in AN development and maintenance. The scientific background, including clinical, microbiological, and biochemical factors, of AN is discussed. A novel model for AN development and maintenance in accordance with this hypothesis is presented. Suggestions for future research are also provided.
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Affiliation(s)
- Stein Frostad
- Division of Psychiatry, Haukeland University Hospital, 5021 Bergen, Norway
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A Framework for Developing Translationally Relevant Animal Models of Stress-Induced Changes in Eating Behavior. Biol Psychiatry 2022; 91:888-897. [PMID: 34433512 PMCID: PMC8720907 DOI: 10.1016/j.biopsych.2021.06.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 02/08/2023]
Abstract
Stress often affects eating behaviors, leading to increased eating in some individuals and decreased eating in others. Identifying physiological and psychological factors that determine the direction of eating responses to stress has been a major goal of epidemiological and clinical studies. However, challenges of standardizing the stress exposure in humans hinder efforts to uncover the underlying mechanisms. The issue of what determines the direction of stress-induced feeding responses has not been directly addressed in animal models, but assays that combine stress with a feeding-related task are commonly used as readouts of other behaviors, such as anxiety. Sex, estrous cyclicity, circadian cyclicity, caloric restriction, palatable diets, elevated body weight, and properties of the stressors similarly influence feeding behavior in humans and rodent models. Yet, most rodent studies do not use conditions that are most relevant for studying feeding behavior in humans. This review proposes a conceptual framework for incorporating these influences to develop reproducible and translationally relevant assays to study effects of stress on food intake. Such paradigms have the potential to uncover links between emotional eating and obesity as well as to the etiology of eating disorders.
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21
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How Can Animal Models Inform the Understanding of Cognitive Inflexibility in Patients with Anorexia Nervosa? J Clin Med 2022; 11:jcm11092594. [PMID: 35566718 PMCID: PMC9105411 DOI: 10.3390/jcm11092594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/27/2022] [Accepted: 04/30/2022] [Indexed: 02/04/2023] Open
Abstract
Deficits in cognitive flexibility are consistently seen in patients with anorexia nervosa (AN). This type of cognitive impairment is thought to be associated with the persistence of AN because it leads to deeply ingrained patterns of thought and behaviour that are highly resistant to change. Neurobiological drivers of cognitive inflexibility have some commonalities with the abnormal brain functional outcomes described in patients with AN, including disrupted prefrontal cortical function, and dysregulated dopamine and serotonin neurotransmitter systems. The activity-based anorexia (ABA) model recapitulates the key features of AN in human patients, including rapid weight loss caused by self-starvation and hyperactivity, supporting its application in investigating the cognitive and neurobiological causes of pathological weight loss. The aim of this review is to describe the relationship between AN, neural function and cognitive flexibility in human patients, and to highlight how new techniques in behavioural neuroscience can improve the utility of animal models of AN to inform the development of novel therapeutics.
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22
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Milton LK, Patton T, O'Keeffe M, Oldfield BJ, Foldi CJ. In pursuit of biomarkers for predicting susceptibility to activity-based anorexia in adolescent female rats. Int J Eat Disord 2022; 55:664-677. [PMID: 35302253 PMCID: PMC9311799 DOI: 10.1002/eat.23705] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 03/01/2022] [Accepted: 03/01/2022] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Identifying risk factors that contribute to the development of anorexia nervosa (AN) is critical for the implementation of early intervention strategies. Anxiety, obsessive-compulsive behavior, and immune dysfunction may be involved in the development of AN; however, their direct influence on susceptibility to the condition remains unclear. Here, we used the activity-based anorexia (ABA) model to examine whether activity, anxiety-like behavior, compulsive behavior, and circulating immune markers predict the subsequent development of pathological weight loss. METHOD Female Sprague-Dawley rats (n = 44) underwent behavioral testing before exposure to ABA conditions after which they were separated into susceptible and resistant subpopulations. Blood was sampled before behavioral testing and after recovery from ABA to screen for proinflammatory cytokines. RESULTS Rats that were vulnerable to pathological weight loss differed significantly from resistant rats on all key ABA parameters. While the primary measures of anxiety-like or compulsive behavior were not shown to predict vulnerability to ABA, increased locomotion and anxiety-like behavior were both associated with the extent of weight loss in susceptible but not resistant animals. Moreover, the change in expression of proinflammatory markers IL-4 and IL-6 evoked by ABA was associated with discrete vulnerability factors. Intriguingly, behavior related to risk assessment was shown to predict vulnerability to ABA. DISCUSSION We did not find undisputable behavioral or immune predictors of susceptibility to pathological weight loss in the ABA rat model. Future research should examine the role of cognition in the development of ABA, dysfunction of which may represent an endophenotype linking anorectic, anxiety-like and compulsive behavior. PUBLIC SIGNIFICANCE Anorexia nervosa (AN) has among the highest mortality rates of all psychiatric disorders and treatment options remain limited in their efficacy. Understanding what types of risk factors contribute to the development of AN is essential for implementing early intervention strategies. This study describes how some of the most common psychological features of AN could be used to predict susceptibility to pathological weight loss in a well-established animal model.
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Affiliation(s)
- Laura Karina Milton
- Department of PhysiologyMonash UniversityClaytonVictoriaAustralia,Monash Biomedicine Discovery InstituteClaytonVictoriaAustralia
| | - Timothy Patton
- Department of Biochemistry and Molecular BiologyMonash UniversityClaytonVictoriaAustralia,Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and ImmunityUniversity of MelbourneElizabethVictoriaAustralia
| | - Meredith O'Keeffe
- Department of Biochemistry and Molecular BiologyMonash UniversityClaytonVictoriaAustralia
| | - Brian John Oldfield
- Department of PhysiologyMonash UniversityClaytonVictoriaAustralia,Monash Biomedicine Discovery InstituteClaytonVictoriaAustralia
| | - Claire Jennifer Foldi
- Department of PhysiologyMonash UniversityClaytonVictoriaAustralia,Monash Biomedicine Discovery InstituteClaytonVictoriaAustralia
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Abstract
PURPOSE OF REVIEW The goal of this review is to describe how emerging technological developments in pre-clinical animal research can be harnessed to accelerate research in anorexia nervosa (AN). RECENT FINDINGS The activity-based anorexia (ABA) paradigm, the best characterized animal model of AN, combines restricted feeding, excessive exercise, and weight loss. A growing body of evidence supports the idea that pathophysiological weight loss in this model is due to cognitive inflexibility, a clinical feature of AN. Targeted manipulations that recapitulate brain changes reported in AN - hyperdopaminergia or hyperactivity of cortical inputs to the nucleus accumbens - exacerbate weight loss in the ABA paradigm, providing the first evidence of causality. The power of preclinical research lies in the ability to assess the consequences of targeted manipulations of neuronal circuits that have been implicated in clinical research. Additional paradigms are needed to capture other features of AN that are not seen in ABA.
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Affiliation(s)
- Marie François
- Division of Molecular Genetics, Naomi Berrie Diabetes Center, Columbia University Irving Medical Center, New York, USA
| | - Lori M Zeltser
- Division of Molecular Genetics, Naomi Berrie Diabetes Center, Columbia University Irving Medical Center, New York, USA.
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, USA.
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24
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Ali AM, Hori H, Kim Y, Kunugi H. Predictors of Nutritional Status, Depression, Internet Addiction, Facebook Addiction, and Tobacco Smoking Among Women With Eating Disorders in Spain. Front Psychiatry 2021; 12:735109. [PMID: 34899416 PMCID: PMC8663168 DOI: 10.3389/fpsyt.2021.735109] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 10/19/2021] [Indexed: 01/04/2023] Open
Abstract
Eating disorders (EDs) are a complex group of psychiatric conditions that involve dysfunctional eating patterns, nutritional alterations, and other comorbid psychopathologies. Some women with EDs may develop problematic internet use while they attempt to get information on dieting/weight control or get online support from people with similar problems. They may also drift toward tobacco smoking as a method to regulate their weight or to cope with their weight-related dysphoria. The occurrence of these conditions in EDs may prolong disease course and impede recovery. This study used structural equation modeling to investigate nutritional status (noted by body mass index, BMI), depression psychopathology, internet addiction (depicted by the Internet Addiction Test), Facebook addiction (depicted by the Bergen Facebook Addiction Scale), and smoking among 123 Spanish women diagnosed with EDs (mean age = 27.3 ± 10.6 years). History of hospitalization, marital status, age, and the level of education predicted BMI in certain ED groups. BMI did not predict depression, but it predicted internet addiction, Facebook addiction, and smoking in certain ED groups. Depression did not predict BMI, internet/Facebook addition, or smoking in any ED group. Some sociodemographic and clinical variables had indirect effects on depression, internet addiction, and Facebook addiction while age was the only variable expressing a direct effect on all outcome measures. Age, education, and history of prolonged treatment predicted smoking in certain ED patients. The findings signify that a considerable target for interventional strategies addressing nutritional and addictive problems in EDs would be women with high BMI, history of hospitalization, history of prolonged treatment, who are particularly young, single, and less educated. Replication studies in larger samples, which comprise various subtypes of EDs from both genders, are warranted to define the exact interaction among the addressed variables.
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Affiliation(s)
- Amira Mohammed Ali
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
- Department of Psychiatric Nursing and Mental Health, Faculty of Nursing, Alexandria University, Alexandria, Egypt
| | - Hiroaki Hori
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yoshiharu Kim
- Department of Behavioral Medicine, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hiroshi Kunugi
- Department of Psychiatry, Teikyo University School of Medicine, Tokyo, Japan
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
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25
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Spadini S, Ferro M, Lamanna J, Malgaroli A. Activity-based anorexia animal model: a review of the main neurobiological findings. J Eat Disord 2021; 9:123. [PMID: 34600568 PMCID: PMC8487535 DOI: 10.1186/s40337-021-00481-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/15/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The genesis of anorexia nervosa (AN), a severe eating disorder with a pervasive effect on many brain functions such as attention, emotions, reward processing, cognition and motor control, has not yet been understood. Since our current knowledge of the genetic aspects of AN is limited, we are left with a large and diversified number of biological, psychological and environmental risk factors, called into question as potential triggers of this chronic condition with a high relapse rate. One of the most valid and used animal models for AN is the activity-based anorexia (ABA), which recapitulates important features of the human condition. This model is generated from naïve rodents by a self-motivated caloric restriction, where a fixed schedule food delivery induces spontaneous increased physical activity. AIM In this review, we sought to provide a summary of the experimental research conducted using the ABA model in the pursuit of potential neurobiological mechanism(s) underlying AN. METHOD The experimental work presented here includes evidence for neuroanatomical and neurophysiological changes in several brain regions as well as for the dysregulation of specific neurochemical synaptic and neurohormonal pathways. RESULTS The most likely hypothesis for the mechanism behind the development of the ABA phenotype relates to an imbalance of the neural circuitry that mediates reward processing. Evidence collected here suggests that ABA animals show a large set of alterations, involving regions whose functions extend way beyond the control of reward mechanisms and eating habits. Hence, we cannot exclude a primary role of these alterations from a mechanistic theory of ABA induction. CONCLUSIONS These findings are not sufficient to solve such a major enigma in neuroscience, still they could be used to design ad hoc further experimental investigation. The prospect is that, since treatment of AN is still challenging, the ABA model could be more effectively used to shed light on the complex AN neurobiological framework, thus supporting the future development of therapeutic strategies but also the identification of biomarkers and diagnostic tools. Anorexia Nervosa (AN) is a severe eating disorder with a dramatic effect on many functions of our brain, such as attention, emotions, cognition and motion control. Since our current knowledge of the genetic aspects behind the development of AN is still limited, many biological, psychological and environmental factors must be taken into account as potential triggers of this condition. One of the most valid animal models for studying AN is the activity-based anorexia (ABA). In this model, rodents spontaneously limit food intake and start performing increased physical activity on a running wheel, a result of the imposition of a fixed time schedule for food delivery. In this review, we provide a detailed summary of the experimental research conducted using the ABA model, which includes extended evidence for changes in the anatomy and function of the brain of ABA rodents. The hope is that such integrated view will support the design of future experiments that will shed light on the complex brain mechanisms behind AN. Such advanced knowledge is crucial to find new, effective strategies for both the early diagnosis of AN and for its treatment.
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Affiliation(s)
- Sara Spadini
- Center for Behavioral Neuroscience and Communication (BNC), Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy
| | - Mattia Ferro
- Center for Behavioral Neuroscience and Communication (BNC), Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy
- Department of Psychology, Sigmund Freud University, Milan, Italy
| | - Jacopo Lamanna
- Center for Behavioral Neuroscience and Communication (BNC), Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy
- Faculty of Psychology, Vita-Salute San Raffaele University, Milan, Italy
| | - Antonio Malgaroli
- Center for Behavioral Neuroscience and Communication (BNC), Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy.
- Faculty of Psychology, Vita-Salute San Raffaele University, Milan, Italy.
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26
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Skowron K, Kurnik-Łucka M, Jurczyk M, Aleksandrovych V, Stach P, Dadański E, Kuśnierz-Cabala B, Jasiński K, Węglarz WP, Mazur P, Podlasz P, Wąsowicz K, Gil K. Is the Activity-Based Anorexia Model a Reliable Method of Presenting Peripheral Clinical Features of Anorexia Nervosa? Nutrients 2021; 13:2876. [PMID: 34445036 PMCID: PMC8399373 DOI: 10.3390/nu13082876] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/24/2022] Open
Abstract
Anorexia nervosa (AN) causes the highest number of deaths among all psychiatric disorders. Reduction in food intake and hyperactivity/increased anxiety observed in AN are also the core features of the activity-based anorexia animal model (ABA). Our aim was to assess how the acute ABA protocol mimics common AN complications, including gonadal and cardiovascular dysfunctions, depending on gender, age, and initial body weight, to form a comprehensive description of ABA as a reliable research tool. Wheel running, body weight, and food intake of adolescent female and male rats were monitored. Electrocardiography, heart rate variability, systolic blood pressure, and magnetic resonance imaging (MRI) measurements were performed. Immediately after euthanasia, tissue fragments and blood were collected for further analysis. Uterine weight was 2 times lower in ABA female rats, and ovarian tissue exhibited a reduced number of antral follicles and decreased expression of estrogen and progesterone receptors. Cardiovascular measurements revealed autonomic decompensation with prolongation of QRS complex and QT interval. The ABA model is a reliable research tool for presenting the breakdown of adaptation mechanisms observed in severe AN. Cardiac and hormonal features of ABA with underlying altered neuroendocrine pathways create a valid phenotype of a human disease.
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Affiliation(s)
- Kamil Skowron
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Magdalena Kurnik-Łucka
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Michał Jurczyk
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Veronika Aleksandrovych
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Paulina Stach
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Emil Dadański
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
| | - Beata Kuśnierz-Cabala
- Department of Diagnostics, Faculty of Medicine, Jagiellonian University Medical College, 31-501 Krakow, Poland;
| | - Krzysztof Jasiński
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland; (K.J.); (W.P.W.)
| | - Władysław P. Węglarz
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland; (K.J.); (W.P.W.)
| | - Paulina Mazur
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, 30-688 Krakow, Poland;
| | - Piotr Podlasz
- Department of Pathophysiology, Forensic Veterinary Medicine and Administration, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (P.P.); (K.W.)
| | - Krzysztof Wąsowicz
- Department of Pathophysiology, Forensic Veterinary Medicine and Administration, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (P.P.); (K.W.)
| | - Krzysztof Gil
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, 31-121 Krakow, Poland; (M.K.-Ł.); (M.J.); (V.A.); (P.S.); (E.D.); (K.G.)
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27
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Duriez P, Nilsson IAK, Le Thuc O, Alexandre D, Chartrel N, Rovere C, Chauveau C, Gorwood P, Tolle V, Viltart O. Exploring the Mechanisms of Recovery in Anorexia Nervosa through a Translational Approach: From Original Ecological Measurements in Human to Brain Tissue Analyses in Mice. Nutrients 2021; 13:nu13082786. [PMID: 34444945 PMCID: PMC8401511 DOI: 10.3390/nu13082786] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/03/2021] [Accepted: 08/09/2021] [Indexed: 12/20/2022] Open
Abstract
Anorexia nervosa (AN) is a severe eating disorder where caloric restriction, excessive physical activity and metabolic alterations lead to life-threatening situations. Despite weight restoration after treatment, a significant part of patients experience relapses. In this translational study, we combined clinical and preclinical approaches. We describe preliminary data about the effect of weight gain on the symptomatology of patients suffering from acute AN (n = 225) and partially recovered (n = 41). We measured more precisely physical activity with continuous cardiac monitoring in a sub-group (n = 68). Using a mouse model, we investigated whether a long-term food restriction followed by nutritional recovery associated or not with physical activity may differentially impact peripheral and central homeostatic regulation. We assessed the plasma concentration of acyl ghrelin, desacyl ghrelin and leptin and the mRNA expression of hypothalamic neuropeptides and their receptors. Our data show an effect of undernutrition history on the level of physical activity in AN. The preclinical model supports an important role of physical activity in the recovery process and points out the leptin system as one factor that can drive a reliable restoration of metabolic variables through the hypothalamic regulation of neuropeptides involved in feeding behavior.
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Affiliation(s)
- Philibert Duriez
- Institute of Psychiatry and Neuroscience of Paris (IPNP), University of Paris, INSERM UMR-S 1266, F-75014 Paris, France; (P.D.); (P.G.); (V.T.)
- GHU Paris Psychiatry and Neurosciences, Hospital Sainte-Anne, F-75014 Paris, France
| | - Ida A. K. Nilsson
- Department of Molecular Medicine & Surgery, Karolinska Institutet, Centre for Eating Disorders Innovation (CEDI), Medical University, Karolinska Institutet, S-17176 Stockholm, Sweden;
| | - Ophelia Le Thuc
- CNRS UMR 7275, Institute of Molecular and Cellular Pharmacology (IPMC), University of Nice-Sophia Antipolis, F-06560 Valbonne, France; (O.L.T.); (C.R.)
| | - David Alexandre
- INSERM U1239, Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, University of Normandie, UNIROUEN, F-76821 Mont-Saint-Aignan, France; (D.A.); (N.C.)
| | - Nicolas Chartrel
- INSERM U1239, Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, University of Normandie, UNIROUEN, F-76821 Mont-Saint-Aignan, France; (D.A.); (N.C.)
| | - Carole Rovere
- CNRS UMR 7275, Institute of Molecular and Cellular Pharmacology (IPMC), University of Nice-Sophia Antipolis, F-06560 Valbonne, France; (O.L.T.); (C.R.)
| | - Christophe Chauveau
- Marrow Adiposity and Bone Laboratory (MABLab), University of Littoral Côté d’Opale, CHRU Lille, F-62327 Boulogne sur Mer, France;
- Faculty of Sciences and Technologies, University of Lille, F-59650 Villeneuve d’Ascq, France
| | - Philip Gorwood
- Institute of Psychiatry and Neuroscience of Paris (IPNP), University of Paris, INSERM UMR-S 1266, F-75014 Paris, France; (P.D.); (P.G.); (V.T.)
- GHU Paris Psychiatry and Neurosciences, Hospital Sainte-Anne, F-75014 Paris, France
| | - Virginie Tolle
- Institute of Psychiatry and Neuroscience of Paris (IPNP), University of Paris, INSERM UMR-S 1266, F-75014 Paris, France; (P.D.); (P.G.); (V.T.)
| | - Odile Viltart
- Institute of Psychiatry and Neuroscience of Paris (IPNP), University of Paris, INSERM UMR-S 1266, F-75014 Paris, France; (P.D.); (P.G.); (V.T.)
- Faculty of Sciences and Technologies, University of Lille, F-59650 Villeneuve d’Ascq, France
- Correspondence: ; Tel.: +33-6-76-88-05-06
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28
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Zhang J, Dulawa SC. The Utility of Animal Models for Studying the Metabo-Psychiatric Origins of Anorexia Nervosa. Front Psychiatry 2021; 12:711181. [PMID: 34721100 PMCID: PMC8551379 DOI: 10.3389/fpsyt.2021.711181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/17/2021] [Indexed: 11/15/2022] Open
Abstract
Anorexia nervosa (AN) is a severe eating disorder that primarily affects young women and girls, and is characterized by abnormal restrictive feeding and a dangerously low body-mass index. AN has one of the highest mortality rates of any psychiatric disorder, and no approved pharmacological treatments exist. Current psychological and behavioral treatments are largely ineffective, and relapse is common. Relatively little basic research has examined biological mechanisms that underlie AN compared to other major neuropsychiatric disorders. A recent large-scale genome-wide association study (GWAS) revealed that the genetic architecture of AN has strong metabolic as well as psychiatric origins, suggesting that AN should be reconceptualized as a metabo-psychiatric disorder. Therefore, identifying the metabo-psychiatric mechanisms that contribute to AN may be essential for developing effective treatments. This review focuses on animal models for studying the metabo-psychiatric mechanisms that may contribute to AN, with a focus on the activity-based anorexia (ABA) paradigm. We also highlight recent work using modern circuit-dissecting neuroscience techniques to uncover metabolic mechanisms that regulate ABA, and encourage further work to ultimately identify novel treatment strategies for AN.
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Affiliation(s)
- Jie Zhang
- Department of Psychiatry, University of California, San Diego, San Diego, CA, United States
| | - Stephanie C Dulawa
- Department of Psychiatry, University of California, San Diego, San Diego, CA, United States
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