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de Ávila C, Gugula A, Trenk A, Intorcia AJ, Suazo C, Nolz J, Plamondon J, Khatri D, Tallant L, Caron A, Blasiak A, Serrano GE, Beach TG, Gundlach AL, Mastroeni DF. Unveiling a novel memory center in human brain: neurochemical identification of the nucleus incertus, a key pontine locus implicated in stress and neuropathology. Biol Res 2024; 57:46. [PMID: 39014514 PMCID: PMC11253401 DOI: 10.1186/s40659-024-00523-z] [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: 10/13/2023] [Accepted: 06/07/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND The nucleus incertus (NI) was originally described by Streeter in 1903, as a midline region in the floor of the fourth ventricle of the human brain with an 'unknown' function. More than a century later, the neuroanatomy of the NI has been described in lower vertebrates, but not in humans. Therefore, we examined the neurochemical anatomy of the human NI using markers, including the neuropeptide, relaxin-3 (RLN3), and began to explore the distribution of the NI-related RLN3 innervation of the hippocampus. METHODS Histochemical staining of serial, coronal sections of control human postmortem pons was conducted to reveal the presence of the NI by detection of immunoreactivity (IR) for the neuronal markers, microtubule-associated protein-2 (MAP2), glutamic acid dehydrogenase (GAD)-65/67 and corticotrophin-releasing hormone receptor 1 (CRHR1), and RLN3, which is highly expressed in NI neurons in diverse species. RLN3 and vesicular GABA transporter 1 (vGAT1) mRNA were detected by fluorescent in situ hybridization. Pons sections containing the NI from an AD case were immunostained for phosphorylated-tau, to explore potential relevance to neurodegenerative diseases. Lastly, sections of the human hippocampus were stained to detect RLN3-IR and somatostatin (SST)-IR. RESULTS In the dorsal, anterior-medial region of the human pons, neurons containing RLN3- and MAP2-IR, and RLN3/vGAT1 mRNA-positive neurons were observed in an anatomical pattern consistent with that of the NI in other species. GAD65/67- and CRHR1-immunopositive neurons were also detected within this area. Furthermore, RLN3- and AT8-IR were co-localized within NI neurons of an AD subject. Lastly, RLN3-IR was detected in neurons within the CA1, CA2, CA3 and DG areas of the hippocampus, in the absence of RLN3 mRNA. In the DG, RLN3- and SST-IR were co-localized in a small population of neurons. CONCLUSIONS Aspects of the anatomy of the human NI are shared across species, including a population of stress-responsive, RLN3-expressing neurons and a RLN3 innervation of the hippocampus. Accumulation of phosphorylated-tau in the NI suggests its possible involvement in AD pathology. Further characterization of the neurochemistry of the human NI will increase our understanding of its functional role in health and disease.
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Affiliation(s)
- Camila de Ávila
- Arizona State University-Banner Neurodegenerative Disease Research Center, Tempe, AZ, USA.
| | - Anna Gugula
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Aleksandra Trenk
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Anthony J Intorcia
- Arizona Alzheimer's Consortium, Phoenix, AZ, USA
- Banner Sun Health Research Institute, Sun City, AZ, USA
| | - Crystal Suazo
- Arizona State University-Banner Neurodegenerative Disease Research Center, Tempe, AZ, USA
| | - Jennifer Nolz
- Arizona State University-Banner Neurodegenerative Disease Research Center, Tempe, AZ, USA
| | | | - Divyanshi Khatri
- Arizona State University-Banner Neurodegenerative Disease Research Center, Tempe, AZ, USA
| | - Lauren Tallant
- Department of Neuroscience, Mayo Clinic, Scottsdale, AZ, USA
| | - Alexandre Caron
- Quebec Heart and Lung Institute, Quebec City, QC, Canada
- Faculty of Pharmacy, Université Laval, Quebec City, QC, Canada
| | - Anna Blasiak
- Department of Neurophysiology and Chronobiology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Geidy E Serrano
- Arizona Alzheimer's Consortium, Phoenix, AZ, USA
- Banner Sun Health Research Institute, Sun City, AZ, USA
| | - Thomas G Beach
- Arizona Alzheimer's Consortium, Phoenix, AZ, USA
- Banner Sun Health Research Institute, Sun City, AZ, USA
| | - Andrew L Gundlach
- Florey Department of Neuroscience and Mental Health and Department of Anatomy and Physiology and The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Diego F Mastroeni
- Arizona State University-Banner Neurodegenerative Disease Research Center, Tempe, AZ, USA
- Arizona Alzheimer's Consortium, Phoenix, AZ, USA
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Rodríguez-Rangel DS, Estrada-Camarena E, López-Rubalcava C. Stress hyper-reactivity increases vulnerability to developing binge-type eating and associated anxiety-like behavior; comparison between Wistar-Kyoto and Sprague-Dawley rats. Front Nutr 2024; 11:1368111. [PMID: 38638297 PMCID: PMC11024955 DOI: 10.3389/fnut.2024.1368111] [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: 01/09/2024] [Accepted: 03/21/2024] [Indexed: 04/20/2024] Open
Abstract
Introduction Binge eating disorder (BED) is a widespread eating disorder that primarily affects women worldwide, and it is characterized by the presence of binge eating episodes and the absence of any compensatory behavior to prevent weight gain. BED presents elevated comorbidity with other psychiatric disorders, such as anxiety, and it has been suggested that stress sensibility could be a vulnerability factor for the development of BED and the associated anxiety comorbidity. In this study, we aim to investigate whether the Wistar-Kyoto rat strain (WKY), which has a stress hyper-reactive phenotype, could develop both binge-type eating and anxiety-like behaviors simultaneously. We also aim to compare its vulnerability to developing both behaviors with the Sprague Dawley rat strain (SD), a rat strain commonly used in binge-eating models. Methods WKY and SD rats were subjected to the model of intermittent access to palatable food (sucrose solution 30% or shortening) without calorie restriction or stress exposure. We evaluated and compared the development of binge-type eating behavior, anxiety-like behavior, and serum corticosterone variation as an index of the stress response in both rat strains. Results WKY rats presented a higher percentage of binge-type eaters and required less time to develop binge-type eating behavior than SD rats. The WKY eating pattern emulated a binge-eating episode regardless of the palatable food. Although the development of sucrose binge-type eating was similar between strains, WKY developed more easily the shortening binge-type eating than SD and was more susceptible to developing anxiety-like behavior. Additionally, sucrose binge eating seems to differentially affect both strains' hypothalamic-pituitary-adrenal (HPA) axis response to stress since it facilitated its response in SD and blunted it in WKY. Discussion Our results show that high-stress sensitive phenotype is a common vulnerability factor for the development of binge-type eating and anxiety-like behavior. Regardless of the macronutrient composition of the palatable food, WKY is susceptible to developing a binge-type eating behavior and is more susceptible than SD to developing anxiety-like behavior simultaneously. In conclusion, results showed that a hyper-reactive stress phenotype predisposes the development of binge-type eating behavior and anxiety-like behavior in the absence of calorie restriction and stress exposure.
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Affiliation(s)
| | - Erika Estrada-Camarena
- Laboratorio de Neuropsicofarmacología, Dirección de Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
| | - Carolina López-Rubalcava
- Departamento de Farmacobiología, Centro de Investigación y Estudios Avanzados (CINVESTAV-Sede Sur), Mexico City, Mexico
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3
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Li ZF, Chometton S, Guèvremont G, Timofeeva E, Timofeev I. Compulsive Eating in a Rat Model of Binge Eating Disorder Under Conditioned Fear and Exploration of Neural Mechanisms With c-fos mRNA Expression. Front Neurosci 2021; 15:777572. [PMID: 34912190 PMCID: PMC8666959 DOI: 10.3389/fnins.2021.777572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Compulsive eating is the most obstinate feature of binge eating disorder. In this study, we observed the compulsive eating in our stress-induced binge-like eating rat model using a conflicting test, where sucrose and an aversively conditioned stimulus were presented at the same time. In this conflicting situation, the binge-like eating prone rats (BEPs), compared to the binge-like eating resistant rats (BERs), showed persistent high sucrose intake and inhibited fear response, respectively, indicating a deficit in palatability devaluation and stronger anxiolytic response to sucrose in the BEPs. We further analyzed the neuronal activation with c-fos mRNA in situ hybridization. Surprisingly, the sucrose access under conditioned fear did not inhibit the activity of amygdala; instead, it activated the central amygdala. In the BEPs, sucrose reduced the response of the paraventricular hypothalamic nucleus (PVN), while enhancing activities in the lateral hypothalamic area (LHA) to the CS. The resistance to devaluating the palatable food in the BEPs could be a result of persistent Acb response to sucrose intake and attenuated recruitment of the medial prefrontal cortex (mPFC). We interpret this finding as that the reward system of the BEPs overcame the homeostasis system and the stress-responding system.
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Affiliation(s)
- Zhi Fei Li
- The First Affiliated Hospital, Jinan University, Guangzhou, China.,Faculté de Médecine, Département de Médecine Moléculaire, Université Laval, Quebec City, QC, Canada.,Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC, Canada.,Centre de Recherche CERVO, Quebec City, QC, Canada
| | - Sandrine Chometton
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC, Canada
| | - Geneviève Guèvremont
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC, Canada
| | - Elena Timofeeva
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC, Canada
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Rehn S, Raymond JS, Boakes RA, Leenaars CHC. A systematic review and meta-analysis of animal models of binge eating - Part 1: Definitions and food/drink intake outcomes. Neurosci Biobehav Rev 2021; 132:1137-1156. [PMID: 34742923 DOI: 10.1016/j.neubiorev.2021.10.036] [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: 09/13/2021] [Revised: 10/19/2021] [Accepted: 10/28/2021] [Indexed: 12/09/2022]
Abstract
Binge eating involves consuming excessive amounts of food within a discrete period of time and is associated with significant impairments in binge-eating disorder and bulimia nervosa. While research on clinical binge eating has provided valuable aetiological insights, animal models allow for closer examination of environmental, biological, and developmental risk factors. Numerous animal models of binge eating exist and differ widely in operational definitions of bingeing, animal characteristics and methodological parameters. The current review aimed to synthesise the available published evidence on these models. A systematic review of binge definitions in 170 articles found most studies displayed good face validity. Meta-analyses on 150 articles confirmed that the amount of food or drink consumed by animals under binge conditions was larger than that of non-binge conditions across many protocols. The meta-regression revealed species, strain, and sex moderated binge effect size, with the largest effect observed in studies with female animals and mice. Risk of bias assessment identified that improved reporting of allocation, baseline characteristics and outcome assessment is required in future studies.
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Affiliation(s)
- Simone Rehn
- The University of Sydney, Faculty of Science, School of Psychology, Sydney, 2006 NSW, Australia.
| | - Joel S Raymond
- The University of Sydney, Faculty of Science, School of Psychology, Sydney, 2006 NSW, Australia; The University of Sydney, Brain and Mind Centre, 94 Mallett Street, Camperdown, Sydney, NSW 2050, Australia
| | - Robert A Boakes
- The University of Sydney, Faculty of Science, School of Psychology, Sydney, 2006 NSW, Australia
| | - Cathalijn H C Leenaars
- Institute for Laboratory Animal Science, Hannover Medical School, 30625, Hannover, Germany; Department for Health Evidence, Radboud University Medical Centre, 6600, Nijmegen, The Netherlands
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5
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Quansah Amissah R, Chometton S, Calvez J, Guèvremont G, Timofeeva E, Timofeev I. Differential Expression of DeltaFosB in Reward Processing Regions Between Binge Eating Prone and Resistant Female Rats. Front Syst Neurosci 2020; 14:562154. [PMID: 33177996 PMCID: PMC7596303 DOI: 10.3389/fnsys.2020.562154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/10/2020] [Indexed: 12/24/2022] Open
Abstract
Binge eating (BE) is characterized by the consumption of large amounts of palatable food in a discrete period and compulsivity. Even though BE is a common symptom in bulimia nervosa (BN), binge eating disorder (BED), and some cases of other specified feeding or eating disorders, little is known about its pathophysiology. We aimed to identify brain regions and neuron subtypes implicated in the development of binge-like eating in a female rat model. We separated rats into binge eating prone (BEP) and binge eating resistant (BER) phenotypes based on the amount of sucrose they consumed following foot-shock stress. We quantified deltaFosB (ΔFosB) expression, a stably expressed Fos family member, in different brain regions involved in reward, taste, or stress processing, to assess their involvement in the development of the phenotype. The number of ΔFosB-expressing neurons was: (1) higher in BEP than BER rats in reward processing areas [medial prefrontal cortex (mPFC), nucleus accumbens (Acb), and ventral tegmental area (VTA)]; (2) similar in taste processing areas [insular cortex, IC and parabrachial nucleus (PBN)]; and (3) higher in the paraventricular nucleus of BEP than BER rats, but not different in the locus coeruleus (LC), which are stress processing structures. To study subtypes of ΔFosB-expressing neurons in the reward system, we performed in situ hybridization for glutamate decarboxylase 65 and tyrosine hydroxylase (TH) mRNA after ΔFosB immunohistochemistry. In the mPFC and Acb, the proportions of γ-aminobutyric acidergic (GABAergic) and non-GABAergic ΔFosB-expressing neurons were similar in BER and BEP rats. In the VTA, while the proportion of dopaminergic ΔFosB-expressing neurons was similar in both phenotypes, the proportion of GABAergic ΔFosB-expressing neurons was higher in BER than BEP rats. Our results suggest that reward processing brain regions, particularly the VTA, are important for the development of binge-like eating.
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Affiliation(s)
- Richard Quansah Amissah
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche de L'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada.,Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche du CERVO, Université Laval, Québec, QC, Canada
| | - Sandrine Chometton
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche de L'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Juliane Calvez
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche de L'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Genevieve Guèvremont
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche de L'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Elena Timofeeva
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche de L'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Igor Timofeev
- Faculté de Médecine, Département de Psychiatrie et de Neurosciences, Centre de Recherche du CERVO, Université Laval, Québec, QC, Canada
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Lamontagne SJ, Wilkin MM, Menard JL, Olmstead MC. Mid-adolescent stress differentially affects binge-like intake of sucrose across estrous cycles in female rats ✰. Physiol Behav 2020; 228:113194. [PMID: 33011230 DOI: 10.1016/j.physbeh.2020.113194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/14/2020] [Accepted: 09/29/2020] [Indexed: 02/07/2023]
Abstract
Binge eating disorder (BED), characterized by excessive food consumption within a discrete period of time, is the most prevalent of all eating disorders, with higher rates in women than men. Chronic stress, particularly during adolescence, is a significant risk factor for BED in women, but the mechanism underlying this relationship remains elusive. We investigated the phenomenon by testing the impact of mid-adolescent intermittent physical stress (IPS) on binge-like intake of sucrose in adult female rats, assessing how the behavior changed across reproductive cycles. One hundred and nineteen Long-Evans rats were exposed to IPS (n = 59) or no stress (NS; n = 60) for 12 days during mid-adolescence (PD35-46). Binge-like eating was induced in adult animals using an intermittent access protocol: animals were provided with 12 h or 24 h access to sucrose, 12 h access to saccharin, or 12 h access to food over 28 days. After 1- or 28-day abstinence, compulsive responding for sucrose was measured using a conditioned suppression paradigm. Rats given 12 h access to sucrose developed binge-like intake, measured as increased consumption during the first hour; the effect was magnified in IPS animals and most pronounced during proestrous. Solution intake in IPS rats was predicted by open arm entries in the elevated plus maze, suggesting that increased risk-taking behavior is associated with greater binge-like eating. IPS blocked conditioned suppression after 28 days of abstinence, pointing to a role of mid-adolescent stress in compulsivity. Collectively, these findings emphasize the impact of stress on the emergence of binge eating in females and suggest that intervention programs for women with a history of adolescent adversity should be investigated as a means to reduce risk for BED.
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Affiliation(s)
- Steven J Lamontagne
- Department of Psychology, Queen's University, Kingston, Ontario, Canada, K7L 3N6
| | - Meaghan M Wilkin
- Department of Psychology, Queen's University, Kingston, Ontario, Canada, K7L 3N6
| | - Janet L Menard
- Department of Psychology, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada, K7L 3N6
| | - Mary C Olmstead
- Department of Psychology, Queen's University, Kingston, Ontario, Canada, K7L 3N6; Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada, K7L 3N6.
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Anversa RG, Campbell EJ, Ch'ng SS, Gogos A, Lawrence AJ, Brown RM. A model of emotional stress‐induced binge eating in female mice with no history of food restriction. GENES BRAIN AND BEHAVIOR 2019; 19:e12613. [DOI: 10.1111/gbb.12613] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Roberta G. Anversa
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
- The Florey Department of Neuroscience and Mental HealthUniversity of Melbourne Parkville Melbourne Australia
| | - Erin J. Campbell
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
| | - Sarah S. Ch'ng
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
| | - Andrea Gogos
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
- The Florey Department of Neuroscience and Mental HealthUniversity of Melbourne Parkville Melbourne Australia
| | - Andrew J. Lawrence
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
- The Florey Department of Neuroscience and Mental HealthUniversity of Melbourne Parkville Melbourne Australia
| | - Robyn M. Brown
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division Parkville Melbourne Australia
- The Florey Department of Neuroscience and Mental HealthUniversity of Melbourne Parkville Melbourne Australia
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8
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Fowler N, Vo PT, Sisk CL, Klump KL. Stress as a potential moderator of ovarian hormone influences on binge eating in women. F1000Res 2019; 8. [PMID: 30854192 PMCID: PMC6396839 DOI: 10.12688/f1000research.16895.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/19/2019] [Indexed: 12/30/2022] Open
Abstract
Previous research has demonstrated significant associations between increased levels of ovarian hormones and increased rates of binge eating (BE) in women. However, whereas all women experience fluctuations in ovarian hormones across the menstrual cycle, not all women binge eat in response to these fluctuations, suggesting that other factors must contribute. Stress is one potential contributing factor. Specifically, it may be that hormone-BE associations are stronger in women who experience high levels of stress, particularly as stress has been shown to be a precipitant to BE episodes in women. To date, no studies have directly examined stress as a moderator of hormone-BE associations, but indirect data (that is, associations between BE and stress and between ovarian hormones and stress) could provide initial clues about moderating effects. Given the above, the purpose of this narrative review was to evaluate these indirect data and their promise for understanding the role of stress in hormone-BE associations. Studies examining associations between all three phenotypes (that is, ovarian hormones, stress, and BE) in animals and humans were reviewed to provide the most thorough and up-to-date review of the literature on the potential moderating effects of stress on ovarian hormone-BE associations. Overall, current evidence suggests that associations between hormones and BE may be stronger in women with high stress levels, possibly via altered hypothalamic-pituitary-adrenal axis response to stress and increased sensitivity to and altered effects of ovarian hormones during stress. Additional studies are necessary to directly examine stress as a moderator of ovarian hormone-BE associations and identify the mechanisms underlying these effects.
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Affiliation(s)
- Natasha Fowler
- Department of Psychology, Michigan State University, 316 Physics Road, East Lansing, MI, 48824-1116, USA
| | - Phuong T Vo
- Department of Psychology, Michigan State University, 316 Physics Road, East Lansing, MI, 48824-1116, USA
| | - Cheryl L Sisk
- Neuroscience Program, Michigan State University, 293 Farm Lane, East Lansing, MI, 48824-1116, USA
| | - Kelly L Klump
- Department of Psychology, Michigan State University, 316 Physics Road, East Lansing, MI, 48824-1116, USA
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Moore CF, Panciera JI, Sabino V, Cottone P. Neuropharmacology of compulsive eating. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0024. [PMID: 29352024 DOI: 10.1098/rstb.2017.0024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2017] [Indexed: 12/22/2022] Open
Abstract
Compulsive eating behaviour is a transdiagnostic construct observed in certain forms of obesity and eating disorders, as well as in the proposed construct of 'food addiction'. Compulsive eating can be conceptualized as comprising three elements: (i) habitual overeating, (ii) overeating to relieve a negative emotional state, and (iii) overeating despite adverse consequences. Neurobiological processes that include maladaptive habit formation, the emergence of a negative affect, and dysfunctions in inhibitory control are thought to drive the development and persistence of compulsive eating behaviour. These complex psychobehavioural processes are under the control of various neuropharmacological systems. Here, we describe the current evidence implicating these systems in compulsive eating behaviour, and contextualize them within the three elements. A better understanding of the neuropharmacological substrates of compulsive eating behaviour has the potential to significantly advance the pharmacotherapy for feeding-related pathologies.This article is part of a discussion meeting issue 'Of mice and mental health: facilitating dialogue between basic and clinical neuroscientists'.
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Affiliation(s)
- Catherine F Moore
- Laboratory of Addictive Disorders, Departments of Pharmacology and Psychiatry, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA.,Graduate Program for Neuroscience, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA
| | - Julia I Panciera
- Laboratory of Addictive Disorders, Departments of Pharmacology and Psychiatry, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA.,MS in Medical Sciences Program, Graduate Medical Sciences, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA.,Master of Public Health Program, Department of Health Policy and Management, Boston University School of Public Health, 715 Albany Street, Boston, MA, USA
| | - Valentina Sabino
- Laboratory of Addictive Disorders, Departments of Pharmacology and Psychiatry, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA
| | - Pietro Cottone
- Laboratory of Addictive Disorders, Departments of Pharmacology and Psychiatry, Boston University School of Medicine, 72 E. Concord Street, R-618, Boston, MA 02118, USA
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Naish KR, Laliberte M, MacKillop J, Balodis IM. Systematic review of the effects of acute stress in binge eating disorder. Eur J Neurosci 2018; 50:2415-2429. [DOI: 10.1111/ejn.14110] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 07/03/2018] [Accepted: 08/07/2018] [Indexed: 12/01/2022]
Affiliation(s)
- Katherine R. Naish
- Peter Boris Centre for Addictions Research Department of Psychiatry and Behavioural Neurosciences McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
| | - Michele Laliberte
- Peter Boris Centre for Addictions Research Department of Psychiatry and Behavioural Neurosciences McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
- Eating Disorders Clinic St. Joseph's Healthcare Hamilton Hamilton ON Canada
- Michael G. DeGroote Centre for Medicinal Cannabis Research Michael G. DeGroote School of Medicine McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
| | - James MacKillop
- Peter Boris Centre for Addictions Research Department of Psychiatry and Behavioural Neurosciences McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
- Michael G. DeGroote Centre for Medicinal Cannabis Research Michael G. DeGroote School of Medicine McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
| | - Iris M. Balodis
- Peter Boris Centre for Addictions Research Department of Psychiatry and Behavioural Neurosciences McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
- Michael G. DeGroote Centre for Medicinal Cannabis Research Michael G. DeGroote School of Medicine McMaster University and St. Joseph's Healthcare Hamilton Hamilton ON Canada
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Novelle MG, Diéguez C. Food Addiction and Binge Eating: Lessons Learned from Animal Models. Nutrients 2018; 10:E71. [PMID: 29324652 PMCID: PMC5793299 DOI: 10.3390/nu10010071] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/26/2017] [Accepted: 01/09/2018] [Indexed: 01/10/2023] Open
Abstract
The feeding process is required for basic life, influenced by environment cues and tightly regulated according to demands of the internal milieu by regulatory brain circuits. Although eating behaviour cannot be considered "addictive" under normal circumstances, people can become "addicted" to this behaviour, similarly to how some people are addicted to drugs. The symptoms, cravings and causes of "eating addiction" are remarkably similar to those experienced by drug addicts, and both drug-seeking behaviour as eating addiction share the same neural pathways. However, while the drug addiction process has been highly characterised, eating addiction is a nascent field. In fact, there is still a great controversy over the concept of "food addiction". This review aims to summarize the most relevant animal models of "eating addictive behaviour", emphasising binge eating disorder, that could help us to understand the neurobiological mechanisms hidden under this behaviour, and to improve the psychotherapy and pharmacological treatment in patients suffering from these pathologies.
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Affiliation(s)
- Marta G Novelle
- Department of Physiology, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 15786 Santiago de Compostela, Spain.
| | - Carlos Diéguez
- Department of Physiology, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 15786 Santiago de Compostela, Spain.
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Cognitive impairment and gene expression alterations in a rodent model of binge eating disorder. Physiol Behav 2017; 180:78-90. [PMID: 28821448 DOI: 10.1016/j.physbeh.2017.08.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 12/21/2022]
Abstract
Binge eating disorder (BED) is defined as recurrent, distressing over-consumption of palatable food (PF) in a short time period. Clinical studies suggest that individuals with BED may have impairments in cognitive processes, executive functioning, impulse control, and decision-making, which may play a role in sustaining binge eating behavior. These clinical reports, however, are limited and often conflicting. In this study, we used a limited access rat model of binge-like behavior in order to further explore the effects of binge eating on cognition. In binge eating prone (BEP) rats, we found novel object recognition (NOR) as well as Barnes maze reversal learning (BM-RL) deficits. Aberrant gene expression of brain derived neurotrophic factor (Bdnf) and tropomyosin receptor kinase B (TrkB) in the hippocampus (HPC)-prefrontal cortex (PFC) network was observed in BEP rats. Additionally, the NOR deficits were correlated with reductions in the expression of TrkB and insulin receptor (Ir) in the CA3 region of the hippocampus. Furthermore, up-regulation of serotonin-2C (5-HT2C) receptors in the orbitoprefrontal cortex (OFC) was associated with BM-RL deficit. Finally, in the nucleus accumbens (NAc), we found decreased dopamine receptor 2 (Drd2) expression among BEP rats. Taken together, these data suggest that binge eating vegetable shortening may induce contextual and reversal learning deficits which may be mediated, at least in part, by the altered expression of genes in the CA3-OFC-NAc neural network.
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