1
|
Balantekin KN, Kretz MJ, Mietlicki-Baase EG. The emerging role of glucagon-like peptide 1 in binge eating. J Endocrinol 2024; 262:e230405. [PMID: 38642585 PMCID: PMC11156433 DOI: 10.1530/joe-23-0405] [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: 12/20/2023] [Accepted: 04/16/2024] [Indexed: 04/22/2024]
Abstract
Binge eating is a central component of two clinical eating disorders: binge eating disorder and bulimia nervosa. However, the large treatment gap highlights the need to identify other strategies to decrease binge eating. Novel pharmacotherapies may be one such approach. Glucagon-like peptide-1 (GLP-1) is an intestinal and brain-derived neuroendocrine signal with a critical role in promoting glycemic control through its incretin effect. Additionally, the energy balance effects of GLP-1 are well-established; activation of the GLP-1 receptor (GLP-1R) reduces food intake and body weight. Aligned with these beneficial metabolic effects, there are GLP-1R agonists that are currently used for the treatment of diabetes and obesity. A growing body of literature suggests that GLP-1 may also play an important role in binge eating. Dysregulation of the endogenous GLP-1 system is associated with binge eating in non-human animal models, and GLP-1R agonists may be a promising approach to suppress the overconsumption that occurs during binge eating. Here, we briefly discuss the role of GLP-1 in normal energy intake and reward and then review the emerging evidence suggesting that disruptions to GLP-1 signaling are associated with binge eating. We also consider the potential utility of GLP-1-based pharmacotherapies for reducing binge eating behavior.
Collapse
Affiliation(s)
- Katherine N. Balantekin
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214 USA
- Center for Ingestive Behavior Research, University at Buffalo, Buffalo, NY 14260 USA
| | - Martin J. Kretz
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214 USA
| | - Elizabeth G. Mietlicki-Baase
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214 USA
- Center for Ingestive Behavior Research, University at Buffalo, Buffalo, NY 14260 USA
| |
Collapse
|
2
|
Perez-Leighton C, Kerr B, Scherer PE, Baudrand R, Cortés V. The interplay between leptin, glucocorticoids, and GLP1 regulates food intake and feeding behaviour. Biol Rev Camb Philos Soc 2024; 99:653-674. [PMID: 38072002 DOI: 10.1111/brv.13039] [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: 03/29/2023] [Revised: 11/21/2023] [Accepted: 12/01/2023] [Indexed: 05/09/2024]
Abstract
Nutritional, endocrine, and neurological signals converge in multiple brain centres to control feeding behaviour and food intake as part of the allostatic regulation of energy balance. Among the several neuroendocrine systems involved, the leptin, glucocorticoid, and glucagon-like peptide 1 (GLP1) systems have been extensively researched. Leptin is at the top hierarchical level since its complete absence is sufficient to trigger severe hyperphagia. Glucocorticoids are key regulators of the energy balance adaptation to stress and their sustained excess leads to excessive adiposity and metabolic perturbations. GLP1 participates in metabolic adaptation to food intake, regulating insulin secretion and satiety by parallel central and peripheral signalling systems. Herein, we review the brain and peripheral targets of these three hormone systems that integrate to regulate food intake, feeding behaviour, and metabolic homeostasis. We examine the functional relationships between leptin, glucocorticoids, and GLP1 at the central and peripheral levels, including the cross-regulation of their circulating levels and their cooperative or antagonistic actions at different brain centres. The pathophysiological roles of these neuroendocrine systems in dysregulated intake are explored in the two extremes of body adiposity - obesity and lipodystrophy - and eating behaviour disorders.
Collapse
Affiliation(s)
- Claudio Perez-Leighton
- Departmento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O'Higgins 340, Santiago, 830024, Chile
| | - Bredford Kerr
- Centro de Biología Celular y Biomedicina-CEBICEM, Facultad de Medicina y Ciencia, Universidad San Sebastián, Carmen Sylva 2444, Providencia, Santiago, Chile
| | - Philipp E Scherer
- Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA
| | - René Baudrand
- Departmento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O'Higgins 340, Santiago, 830024, Chile
- Centro Translacional de Endocrinología (CETREN), Facultad de Medicina, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O'Higgins 340, Santiago, 830024, Chile
| | - Víctor Cortés
- Departmento de Nutrición, Diabetes y Metabolismo, Facultad de Medicina, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O'Higgins 340, Santiago, 830024, Chile
| |
Collapse
|
3
|
Zhang P, Mao Y, Gao L, Tian Z, Sun R, He Y, Ma P, Dou B, Chen Y, Zhang X, He Z, Yin T, Zeng F. Abnormal functional connectivity of the reward circuit associated with early satiety in patients with postprandial distress syndrome. Appetite 2024; 197:107317. [PMID: 38552365 DOI: 10.1016/j.appet.2024.107317] [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: 09/02/2023] [Revised: 03/11/2024] [Accepted: 03/15/2024] [Indexed: 04/14/2024]
Abstract
Postprandial distress syndrome (PDS) is the most common functional dyspepsia (FD) subtype. Early satiety is one of the cardinal symptoms of the PDS subtype in FD patients. The heterogeneity of symptoms in FD patients hampered therapy for patients based on specific symptoms, necessitating a symptom-based understanding of the pathophysiology of FD. To investigate the correlation between reward circuit and symptom severity of PDS patients, seed (Nucleus accumbens, NAc, a key node in the reward circuit) based resting-state functional connectivity (FC) was applied in the neuroimaging data analysis. The results demonstrated that the patients with PDS manifested strengthened FC between NAc and the caudate, putamen, pallidum, amygdala, hippocampus, thalamus, anterior cingulate cortex (ACC), and insula. Moreover, the FC between NAc and ACC, insula, thalamus, and hippocampus exhibited significant positive associations with symptom severity. More importantly, the strengthened FC between NAc and the ACC, insula, amygdala, and hippocampus were found associated with the early satiety symptom of patients with PDS. This study indicated that the altered FC of reward circuit regions may play a role in the pathophysiology of patients with PDS, and some of the aberrant NAc-based FC within the reward circuit were more related to the early satiety of patients with PDS. These findings improve our symptom-based understanding of the central pathophysiology of FD, lay the groundwork for an objective diagnosis of FD, and shed light on the precise prescription for treating FD based on symptoms.
Collapse
Affiliation(s)
- Pan Zhang
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China; Nervous System Disease Treatment Center, Traditional Chinese Medicine Hospital of Meishan, Meishan, 620032, Sichuan, China
| | - Yangke Mao
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China
| | - Liangchao Gao
- Department of Radiology, Chengdu Fifth People's Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China
| | - Zilei Tian
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China
| | - Ruirui Sun
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China
| | - Yuqi He
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China
| | - Peihong Ma
- Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Beihong Dou
- Department of Radiology, Chengdu Fifth People's Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, 611130, China
| | - Yuan Chen
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Xiabing Zhang
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Zhaoxuan He
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China.
| | - Tao Yin
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China.
| | - Fang Zeng
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Acupuncture and Brain Science Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China; Key Laboratory of Acupuncture for Senile Disease (Chengdu University of TCM), Ministry of Education, Chengdu, 610075, China.
| |
Collapse
|
4
|
Robbins TW, Banca P, Belin D. From compulsivity to compulsion: the neural basis of compulsive disorders. Nat Rev Neurosci 2024; 25:313-333. [PMID: 38594324 DOI: 10.1038/s41583-024-00807-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 04/11/2024]
Abstract
Compulsive behaviour, an apparently irrational perseveration in often maladaptive acts, is a potential transdiagnostic symptom of several neuropsychiatric disorders, including obsessive-compulsive disorder and addiction, and may reflect the severe manifestation of a dimensional trait termed compulsivity. In this Review, we examine the psychological basis of compulsions and compulsivity and their underlying neural circuitry using evidence from human neuroimaging and animal models. Several main elements of this circuitry are identified, focused on fronto-striatal systems implicated in goal-directed behaviour and habits. These systems include the orbitofrontal, prefrontal, anterior cingulate and insular cortices and their connections with the basal ganglia as well as sensoriomotor and parietal cortices and cerebellum. We also consider the implications for future classification of impulsive-compulsive disorders and their treatment.
Collapse
Affiliation(s)
- Trevor W Robbins
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK.
| | - Paula Banca
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK
| | - David Belin
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK
| |
Collapse
|
5
|
G Anversa R, Campbell EJ, Walker LC, S Ch'ng S, Muthmainah M, S Kremer F, M Guimarães A, O'Shea MJ, He S, Dayas CV, Andrews ZB, Lawrence AJ, Brown RM. A paraventricular thalamus to insular cortex glutamatergic projection gates "emotional" stress-induced binge eating in females. Neuropsychopharmacology 2023; 48:1931-1940. [PMID: 37474763 PMCID: PMC10584903 DOI: 10.1038/s41386-023-01665-6] [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: 02/08/2023] [Revised: 06/14/2023] [Accepted: 07/11/2023] [Indexed: 07/22/2023]
Abstract
It is well-established that stress and negative affect trigger eating disorder symptoms and that the brains of men and women respond to stress in different ways. Indeed, women suffer disproportionately from emotional or stress-related eating, as well as associated eating disorders such as binge eating disorder. Nevertheless, our understanding of the precise neural circuits driving this maladaptive eating behavior, particularly in women, remains limited. We recently established a clinically relevant model of 'emotional' stress-induced binge eating whereby only female mice display binge eating in response to an acute "emotional" stressor. Here, we combined neuroanatomic, transgenic, immunohistochemical and pathway-specific chemogenetic approaches to investigate whole brain functional architecture associated with stress-induced binge eating in females, focusing on the role of Vglut2 projections from the paraventricular thalamus (PVTVglut2+) to the medial insular cortex in this behavior. Whole brain activation mapping and hierarchical clustering of Euclidean distances revealed distinct patterns of coactivation unique to stress-induced binge eating. At a pathway-specific level, PVTVglut2+ cells projecting to the medial insular cortex were specifically activated in response to stress-induced binge eating. Subsequent chemogenetic inhibition of this pathway suppressed stress-induced binge eating. We have identified a distinct PVTVglut2+ to insular cortex projection as a key driver of "emotional" stress-induced binge eating in female mice, highlighting a novel circuit underpinning this sex-specific behavior.
Collapse
Affiliation(s)
- Roberta G Anversa
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
- The Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Melbourne, Australia
| | - Erin J Campbell
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
- The Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Melbourne, Australia
- School of Biochemical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Leigh C Walker
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
- The Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Melbourne, Australia
| | - Sarah S Ch'ng
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
| | - Muthmainah Muthmainah
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
- Department of Anatomy, Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia
| | - Frederico S Kremer
- Laboratório de Bioinformática, Programa de Pós-Graduação em Biotecnologia, Centro de Desenvolvimento Tecnológico, Federal University of Pelotas, Pelotas, Brazil
| | - Amanda M Guimarães
- Laboratório de Bioinformática, Programa de Pós-Graduação em Biotecnologia, Centro de Desenvolvimento Tecnológico, Federal University of Pelotas, Pelotas, Brazil
| | - Mia J O'Shea
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
| | - Suheng He
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
| | - Christopher V Dayas
- School of Biochemical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Zane B Andrews
- Biomedicine Discovery Institute and department of Physiology, Monash University, Clayton, Australia
| | - Andrew J Lawrence
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia
| | - Robyn M Brown
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia.
- The Florey Institute of Neuroscience and Mental Health, Mental Health Division, Parkville, Melbourne, Australia.
- The Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Melbourne, Australia.
| |
Collapse
|
6
|
Vozella V, Cruz B, Feldman HC, Bullard R, Bianchi PC, Natividad LA, Cravatt BF, Zorrilla EP, Ciccocioppo R, Roberto M. Sexually dimorphic effects of monoacylglycerol lipase inhibitor MJN110 on stress-related behaviour and drinking in Marchigian Sardinian alcohol-preferring rats. Br J Pharmacol 2023; 180:3130-3145. [PMID: 37488777 PMCID: PMC10805956 DOI: 10.1111/bph.16197] [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: 03/25/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND AND PURPOSE The endocannabinoid (eCB) system plays an important homeostatic role in the regulation of stress circuits and has emerged as a therapeutic target to treat stress disorders and alcohol use disorder (AUD). Extensive research has elucidated a role for the eCB anandamide (AEA), but less is known about 2-arachidonoylglycerol (2-AG) mediated signalling. EXPERIMENTAL APPROACH We pharmacologically enhanced eCB signalling by inhibiting the 2-AG metabolizing enzyme, monoacylglycerol lipase (MAGL), in male and female Marchigian Sardinian alcohol-preferring (msP) rats, a model of innate alcohol preference and stress hypersensitivity, and in control Wistar rats. We tested the acute effect of the selective MAGL inhibitor MJN110 in alleviating symptoms of alcohol drinking, anxiety, irritability and fear. KEY RESULTS A single systemic administration of MJN110 increased 2-AG levels in the central amygdala, prelimbic and infralimbic cortex but did not acutely alter alcohol drinking. MAGL inhibition reduced aggressive behaviours in female msPs, and increased defensive behaviours in male msPs, during the irritability test. Moreover, in the novelty-induced hypophagia test, MJN110 selectively enhanced palatable food consumption in females, mitigating stress-induced food suppression. Lastly, msP rats showed increased conditioned fear behaviour compared with Wistar rats, and MJN110 reduced context-associated conditioned fear responses, but not cue-probed fear expression, in male msPs. CONCLUSIONS AND IMPLICATIONS Acute inhibition of MAGL attenuated some stress-related responses in msP rats but not voluntary alcohol drinking. Our results provide new insights into the sex dimorphism documented in stress-induced responses. Sex-specific eCB-based approaches should be considered in the clinical development of therapeutics.
Collapse
Affiliation(s)
- Valentina Vozella
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Bryan Cruz
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Hannah C. Feldman
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ryan Bullard
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Paula C. Bianchi
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
- Department of Pharmacology, Universidade Federal de São Paulo - UNIFESP, São Paulo, SP 04023-062, Brazil
| | - Luis A. Natividad
- College of Pharmacy, Division of Pharmacology and Toxicology, The University of Texas at Austin, 107 W. Dean Keeton Street, Austin, TX 78712, USA
| | - Benjamin F. Cravatt
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Eric P. Zorrilla
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Roberto Ciccocioppo
- School of Pharmacy, Pharmacology Unit, University of Camerino, Via Madonna delle Carceri 9, Camerino, 62032 Italy
| | - Marisa Roberto
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| |
Collapse
|
7
|
Passeri A, Municchi D, Cavalieri G, Babicola L, Ventura R, Di Segni M. Linking drug and food addiction: an overview of the shared neural circuits and behavioral phenotype. Front Behav Neurosci 2023; 17:1240748. [PMID: 37767338 PMCID: PMC10520727 DOI: 10.3389/fnbeh.2023.1240748] [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: 06/15/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
Despite a lack of agreement on its definition and inclusion as a specific diagnosable disturbance, the food addiction construct is supported by several neurobiological and behavioral clinical and preclinical findings. Recognizing food addiction is critical to understanding how and why it manifests. In this overview, we focused on those as follows: 1. the hyperpalatable food effects in food addiction development; 2. specific brain regions involved in both food and drug addiction; and 3. animal models highlighting commonalities between substance use disorders and food addiction. Although results collected through animal studies emerged from protocols differing in several ways, they clearly highlight commonalities in behavioral manifestations and neurobiological alterations between substance use disorders and food addiction characteristics. To develop improved food addiction models, this heterogeneity should be acknowledged and embraced so that research can systematically investigate the role of specific variables in the development of the different behavioral features of addiction-like behavior in preclinical models.
Collapse
Affiliation(s)
- Alice Passeri
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Psychology and Center “Daniel Bovet”, Sapienza University, Rome, Italy
| | - Diana Municchi
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Psychology and Center “Daniel Bovet”, Sapienza University, Rome, Italy
| | - Giulia Cavalieri
- Department of Psychology and Center “Daniel Bovet”, Sapienza University, Rome, Italy
| | | | - Rossella Ventura
- Department of Psychology and Center “Daniel Bovet”, Sapienza University, Rome, Italy
- IRCCS San Raffaele, Rome, Italy
| | - Matteo Di Segni
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Psychology and Center “Daniel Bovet”, Sapienza University, Rome, Italy
| |
Collapse
|
8
|
Kendig MD, Leigh S, Hasebe K, Kaakoush NO, Westbrook RF, Morris MJ. Obesogenic Diet Cycling Produces Graded Effects on Cognition and Microbiota Composition in Rats. Mol Nutr Food Res 2023; 67:e2200809. [PMID: 37083181 PMCID: PMC10909530 DOI: 10.1002/mnfr.202200809] [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: 11/19/2022] [Revised: 02/20/2023] [Indexed: 04/22/2023]
Abstract
SCOPE The effects of diet cycling on cognition and fecal microbiota are not well understood. METHOD AND RESULTS Adult male Sprague-Dawley rats were cycled between a high-fat, high-sugar "cafeteria" diet (Caf) and regular chow. The impairment in place recognition memory produced by 16 days of Caf diet was reduced by switching to chow for 11 but not 4 days. Next, rats received 16 days of Caf diet in 2, 4, 8, or 16-day cycles, each separated by 4-day chow cycles. Place recognition memory declined from baseline in all groups and was impaired in the 16- versus 2-day group. Finally, rats received 24 days of Caf diet continuously or in 3-day cycles separated by 2- or 4-day chow cycles. Any Caf diet access impaired cognition and increased adiposity relative to controls, without altering hippocampal gene expression. Place recognition and adiposity were the strongest predictors of global microbiota composition. Overall, diets with higher Caf > chow ratios produced greater spatial memory impairments and larger shifts in gut microbiota species richness and beta diversity. CONCLUSION Results suggest that diet-induced cognitive deficits worsen in proportion to unhealthy diet exposure, and that shifting to a healthy chow for at least a week is required for recovery under the conditions tested here.
Collapse
Affiliation(s)
- Michael D. Kendig
- School of Medical SciencesUNSW SydneySydneyNSW2052Australia
- School of Life SciencesUniversity of TechnologyUltimoNSW2007Australia
| | - Sarah‐Jane Leigh
- School of Medical SciencesUNSW SydneySydneyNSW2052Australia
- APC MicrobiomeUniversity of CorkCorkT12 K8AFIreland
| | - Kyoko Hasebe
- School of Medical SciencesUNSW SydneySydneyNSW2052Australia
| | | | | | | |
Collapse
|
9
|
Bourdy R, Befort K. The Role of the Endocannabinoid System in Binge Eating Disorder. Int J Mol Sci 2023; 24:ijms24119574. [PMID: 37298525 DOI: 10.3390/ijms24119574] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Eating disorders are multifactorial disorders that involve maladaptive feeding behaviors. Binge eating disorder (BED), the most prevalent of these in both men and women, is characterized by recurrent episodes of eating large amounts of food in a short period of time, with a subjective loss of control over eating behavior. BED modulates the brain reward circuit in humans and animal models, which involves the dynamic regulation of the dopamine circuitry. The endocannabinoid system plays a major role in the regulation of food intake, both centrally and in the periphery. Pharmacological approaches together with research using genetically modified animals have strongly highlighted a predominant role of the endocannabinoid system in feeding behaviors, with the specific modulation of addictive-like eating behaviors. The purpose of the present review is to summarize our current knowledge on the neurobiology of BED in humans and animal models and to highlight the specific role of the endocannabinoid system in the development and maintenance of BED. A proposed model for a better understanding of the underlying mechanisms involving the endocannabinoid system is discussed. Future research will be necessary to develop more specific treatment strategies to reduce BED symptoms.
Collapse
Affiliation(s)
- Romain Bourdy
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, UMR7364, CNRS, 12 Rue Goethe, 67000 Strasbourg, France
| | - Katia Befort
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, UMR7364, CNRS, 12 Rue Goethe, 67000 Strasbourg, France
| |
Collapse
|
10
|
Hall PA, Best JR, Danckert J, Beaton EA, Lee JA. Morphometry of the lateral orbitofrontal cortex is associated with eating dispositions in early adolescence: findings from a large population-based study. Soc Cogn Affect Neurosci 2023; 18:6313497. [PMID: 34216137 PMCID: PMC9997071 DOI: 10.1093/scan/nsab084] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/11/2021] [Accepted: 06/29/2021] [Indexed: 11/13/2022] Open
Abstract
Early adolescence is a critical period for eating behaviors as children gain autonomy around food choice and peer influences increase in potency. From a neurodevelopmental perspective, significant structural changes take place in the prefrontal cortex during this time, including the orbitofrontal cortex (OFC), which is involved in socially contextualized decision-making. We examined the morphological features of the OFC in relation to food choice in a sample of 10 309 early adolescent children from the Adolescent Brain and Cognitive Development Study. Structural parameters of the OFC and insula were examined for relationships with two important aspects of food choice: limiting the consumption of fast/fried food and maximizing the consumption of nutritious foods. Raw, partially adjusted and fully adjusted models were evaluated. Findings revealed that a larger surface area of the lateral OFC was associated with higher odds of limiting fast/fried food consumption in raw [odds ratio (OR) = 1.07, confidence interval (CI): 1.02, 1.12, P = 0.002, PFDR = 0.012], partially adjusted (OR = 1.11, CI: 1.03, 1.19, P = 0.004, PFDR = 0.024) and fully adjusted models (OR = 1.11, CI: 1.03, 1.19, P = 0.006, PFDR = 0.036). In contrast, a larger insula volume was associated with lower odds of maximizing healthy foods in raw (OR = 0.94, CI: 0.91, 0.97, P <0.001, PFDR = 0.003) and partially adjusted (OR = 0.93, CI: 0.88, 0.98, P = 0.008, PFDR = 0.048) models. These findings refine our understanding of the OFC as a network node implicated in socially mediated eating behaviors.
Collapse
Affiliation(s)
- Peter A Hall
- School of Public Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - John R Best
- Gerontology Research Centre, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - James Danckert
- Department of Psychology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Elliott A Beaton
- Department of Psychology, University of New Orleans, New Orleans, LA 70148, USA
| | - Jessica A Lee
- Department of Psychology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| |
Collapse
|
11
|
Abstract
Eating disorders (anorexia nervosa, bulimia nervosa and binge-eating disorder) are a heterogeneous class of complex illnesses marked by weight and appetite dysregulation coupled with distinctive behavioral and psychological features. Our understanding of their genetics and neurobiology is evolving thanks to global cooperation on genome-wide association studies, neuroimaging, and animal models. Until now, however, these approaches have advanced the field in parallel, with inadequate cross-talk. This review covers overlapping advances in these key domains and encourages greater integration of hypotheses and findings to create a more unified science of eating disorders. We highlight ongoing and future work designed to identify implicated biological pathways that will inform staging models based on biology as well as targeted prevention and tailored intervention, and will galvanize interest in the development of pharmacologic agents that target the core biology of the illnesses, for which we currently have few effective pharmacotherapeutics.
Collapse
|
12
|
Lee GJ, Kim YJ, Shim SW, Lee K, Oh SB. Anterior insular-nucleus accumbens pathway controls refeeding-induced analgesia under chronic inflammatory pain condition. Neuroscience 2022; 495:58-73. [DOI: 10.1016/j.neuroscience.2022.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/21/2022] [Accepted: 05/19/2022] [Indexed: 10/18/2022]
|
13
|
Kirson D, Spierling Bagsic SR, Murphy J, Chang H, Vlkolinsky R, Pucci SN, Prinzi J, Williams CA, Fang SY, Roberto M, Zorrilla EP. Decreased excitability of leptin-sensitive anterior insula pyramidal neurons in a rat model of compulsive food demand. Neuropharmacology 2022; 208:108980. [PMID: 35122838 PMCID: PMC9055870 DOI: 10.1016/j.neuropharm.2022.108980] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/13/2022] [Accepted: 01/30/2022] [Indexed: 02/08/2023]
Abstract
Compulsive eating is an overlapping construct with binge eating that shares many characteristics with substance use disorders. Compulsive eating may impact millions of Americans; presenting in some cases of binge eating disorders, overweight/obesity, and among individuals who have not yet been diagnosed with a recognized eating disorder. To study the behavioral and neurobiological underpinnings of compulsive eating, we employ a published rodent model using cyclic intermittent access to a palatable diet to develop a self-imposed binge-withdrawal cycle. Here, we further validated this model of compulsive eating in female Wistar rats, through the lens of behavioral economic analyses and observed heightened demand intensity, inelasticity and essential value as well as increased food-seeking during extinction. Using electrophysiological recordings in the anterior insular cortex, a region previously implicated in modulating compulsive-like eating in intermittent access models, we observed functional adaptations of pyramidal neurons. Within the same neurons, application of leptin led to further functional adaptations, suggesting a previously understudied, extrahypothalamic role of leptin in modulating feeding-related cortical circuits. Collectively, the findings suggest that leptin may modulate food-related motivation or decision-making via a plastic cortical circuit that is influenced by intermittent access to a preferred diet. These findings warrant further study of whether behavioral economics analysis of compulsive eating can impact disordered eating outcomes in humans and of the translational relevance of a leptin-sensitive anterior insular circuit implicated in these behaviors.
Collapse
Affiliation(s)
- Dean Kirson
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA; University of Tennessee Health Science Center, Department of Pharmacology, Addiction Science, and Toxicology, 71 S Manassas, Memphis, TN, 38103, USA
| | - Samantha R Spierling Bagsic
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA; Scripps Health, Scripps Whittier Diabetes Institute, 10140 Campus Point Drive, San Diego, CA, 92121, USA
| | - Jiayuan Murphy
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Hang Chang
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Roman Vlkolinsky
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Sarah N Pucci
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Julia Prinzi
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Casey A Williams
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Savannah Y Fang
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Marisa Roberto
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Eric P Zorrilla
- The Scripps Research Institute, Department of Molecular Medicine, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA.
| |
Collapse
|
14
|
Berland C, Castel J, Terrasi R, Montalban E, Foppen E, Martin C, Muccioli GG, Luquet S, Gangarossa G. Identification of an endocannabinoid gut-brain vagal mechanism controlling food reward and energy homeostasis. Mol Psychiatry 2022; 27:2340-2354. [PMID: 35075269 DOI: 10.1038/s41380-021-01428-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 12/07/2021] [Accepted: 12/23/2021] [Indexed: 12/11/2022]
Abstract
The regulation of food intake, a sine qua non requirement for survival, thoroughly shapes feeding and energy balance by integrating both homeostatic and hedonic values of food. Unfortunately, the widespread access to palatable food has led to the development of feeding habits that are independent from metabolic needs. Among these, binge eating (BE) is characterized by uncontrolled voracious eating. While reward deficit seems to be a major contributor of BE, the physiological and molecular underpinnings of BE establishment remain elusive. Here, we combined a physiologically relevant BE mouse model with multiscale in vivo approaches to explore the functional connection between the gut-brain axis and the reward and homeostatic brain structures. Our results show that BE elicits compensatory adaptations requiring the gut-to-brain axis which, through the vagus nerve, relies on the permissive actions of peripheral endocannabinoids (eCBs) signaling. Selective inhibition of peripheral CB1 receptors resulted in a vagus-dependent increased hypothalamic activity, modified metabolic efficiency, and dampened activity of mesolimbic dopamine circuit, altogether leading to the suppression of palatable eating. We provide compelling evidence for a yet unappreciated physiological integrative mechanism by which variations of peripheral eCBs control the activity of the vagus nerve, thereby in turn gating the additive responses of both homeostatic and hedonic brain circuits which govern homeostatic and reward-driven feeding. In conclusion, we reveal that vagus-mediated eCBs/CB1R functions represent an interesting and innovative target to modulate energy balance and counteract food-reward disorders.
Collapse
Affiliation(s)
- Chloé Berland
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Julien Castel
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Romano Terrasi
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, 1200, Brussels, Belgium
| | - Enrica Montalban
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Ewout Foppen
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Claire Martin
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Giulio G Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, 1200, Brussels, Belgium
| | - Serge Luquet
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Giuseppe Gangarossa
- Université de Paris, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France.
| |
Collapse
|
15
|
Laque A, Wagner GE, Matzeu A, De Ness GL, Kerr TM, Carroll AM, de Guglielmo G, Nedelescu H, Buczynski MW, Gregus AM, Jhou TC, Zorrilla EP, Martin-Fardon R, Koya E, Ritter RC, Weiss F, Suto N. Linking drug and food addiction via compulsive appetite. Br J Pharmacol 2022; 179:2589-2609. [PMID: 35023154 PMCID: PMC9081129 DOI: 10.1111/bph.15797] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 10/09/2021] [Accepted: 10/21/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE "Food addiction" is the subject of intense public and research interest. However, this nosology based on neurobehavioral similarities among obese individuals and patients with eating disorders and drug addiction remains controversial. We thus sought to determine which aspects of disordered eating are causally linked to preclinical models of drug addiction. We hypothesized that extensive drug histories, known to cause addiction-like brain changes and drug motivation in rats, would also cause addiction-like food motivation. EXPERIMENTAL APPROACH Rats underwent extensive cocaine, alcohol, caffeine or obesogenic diet histories, and were subsequently tested for punishment-resistant food self-administration or "compulsive appetite", as a measure of addiction-like food motivation. KEY RESULTS Extensive cocaine and alcohol (but not caffeine) histories caused compulsive appetite that persisted long after the last drug exposure. Extensive obesogenic diet histories also caused compulsive appetite, although neither cocaine nor alcohol histories caused excess calorie intake and bodyweight during abstinence. Hence, compulsive appetite and obesity appear to be dissociable, with the former sharing common mechanisms with preclinical drug addiction models. CONCLUSION AND IMPLICATIONS Compulsive appetite, as seen in subsets of obese individuals and patients with binge-eating disorder and bulimia nervosa (eating disorders that do not necessarily result in obesity), appears to epitomize "food addiction". Because different drug and obesogenic diet histories caused compulsive appetite, overlapping dysregulations in the reward circuits, which control drug and food motivation independently of energy homeostasis, may offer common therapeutic targets for treating addictive behaviors across drug addiction, eating disorders and obesity.
Collapse
Affiliation(s)
- Amanda Laque
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Grant E Wagner
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Alessandra Matzeu
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Genna L De Ness
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Tony M Kerr
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA.,College of Pharmacy, University of Texas Austin, Austin, TX, USA
| | - Ayla M Carroll
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Giordano de Guglielmo
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA.,Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Hermina Nedelescu
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Matthew W Buczynski
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA.,School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Ann M Gregus
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Thomas C Jhou
- Department of Neurosciences, Medical University of South Carolina, Charleston, SC, USA
| | - Eric P Zorrilla
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Remi Martin-Fardon
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Eisuke Koya
- Sussex Neuroscience, School of Psychology, University of Sussex, Falmer, UK
| | - Robert C Ritter
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, USA
| | - Friedbert Weiss
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Nobuyoshi Suto
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| |
Collapse
|
16
|
Association of increased abdominal adiposity at birth with altered ventral caudate microstructure. Int J Obes (Lond) 2021; 45:2396-2403. [PMID: 34282269 DOI: 10.1038/s41366-021-00905-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/17/2021] [Accepted: 07/01/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Neonatal adiposity is associated with a higher risk of obesity and cardiometabolic risk factors in later life. It is however unknown if central food intake regulating networks in the ventral striatum are altered with in-utero abdominal growth, indexed by neonatal adiposity in our current study. We aim to examine the relationship between striatal microstructure and abdominal adipose tissue compartments (AATCs) in Asian neonates from the Growing Up in Singapore Toward healthy Outcomes mother-offspring cohort. STUDY DESIGN About 109 neonates were included in this study. Magnetic resonance imaging (MRI) was performed for the brain and abdominal regions between 5 to 17 days of life. Diffusion-weighted imaging of the brain was performed for the derivation of caudate and putamen fractional anisotropy (FA). Abdominal imaging was performed to quantify AATCs namely superficial subcutaneous adipose tissue (sSAT), deep subcutaneous adipose tissue (dSAT), and internal adipose tissue (IAT). Absolute and percentage adipose tissue of total abdominal volume (TAV) were calculated. RESULTS We showed that AATCs at birth were significantly associated with increased FA in bilateral ventral caudate heads which are part of the ventral striatum (sSAT: βleft = 0.56, p < 0.001; βright = 0.65, p < 0.001, dSAT: βleft = 0.43, p < 0.001; βright = 0.52, p < 0.001, IAT: βleft = 0.30, p = 0.005; βright = 0.32, p = 0.002) in neonates with low birth weights adjusted for gestational age. CONCLUSIONS Our study provides preliminary evidence of a potential relationship between neonatal adiposity and in-utero programming of the ventral striatum, a brain structure that governs feeding behavior.
Collapse
|
17
|
Better living through understanding the insula: Why subregions can make all the difference. Neuropharmacology 2021; 198:108765. [PMID: 34461066 DOI: 10.1016/j.neuropharm.2021.108765] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/19/2021] [Accepted: 08/23/2021] [Indexed: 02/07/2023]
Abstract
Insula function is considered critical for many motivated behaviors, with proposed functions ranging from attention, behavioral control, emotional regulation, goal-directed and aversion-resistant responding. Further, the insula is implicated in many neuropsychiatric conditions including substance abuse. More recently, multiple insula subregions have been distinguished based on anatomy, connectivity, and functional contributions. Generally, posterior insula is thought to encode more somatosensory inputs, which integrate with limbic/emotional information in middle insula, that in turn integrate with cognitive processes in anterior insula. Together, these regions provide rapid interoceptive information about the current or predicted situation, facilitating autonomic recruitment and quick, flexible action. Here, we seek to create a robust foundation from which to understand potential subregion differences, and provide direction for future studies. We address subregion differences across humans and rodents, so that the latter's mechanistic interventions can best mesh with clinical relevance of human conditions. We first consider the insula's suggested roles in humans, then compare subregional studies, and finally describe rodent work. One primary goal is to encourage precision in describing insula subregions, since imprecision (e.g. including both posterior and anterior studies when describing insula work) does a disservice to a larger understanding of insula contributions. Additionally, we note that specific task details can greatly impact recruitment of various subregions, requiring care and nuance in design and interpretation of studies. Nonetheless, the central ethological importance of the insula makes continued research to uncover mechanistic, mood, and behavioral contributions of paramount importance and interest. This article is part of the special Issue on 'Neurocircuitry Modulating Drug and Alcohol Abuse'.
Collapse
|
18
|
The insulo-opercular cortex encodes food-specific content under controlled and naturalistic conditions. Nat Commun 2021; 12:3609. [PMID: 34127675 PMCID: PMC8203663 DOI: 10.1038/s41467-021-23885-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 05/13/2021] [Indexed: 12/02/2022] Open
Abstract
The insulo-opercular network functions critically not only in encoding taste, but also in guiding behavior based on anticipated food availability. However, there remains no direct measurement of insulo-opercular activity when humans anticipate taste. Here, we collect direct, intracranial recordings during a food task that elicits anticipatory and consummatory taste responses, and during ad libitum consumption of meals. While cue-specific high-frequency broadband (70–170 Hz) activity predominant in the left posterior insula is selective for taste-neutral cues, sparse cue-specific regions in the anterior insula are selective for palatable cues. Latency analysis reveals this insular activity is preceded by non-discriminatory activity in the frontal operculum. During ad libitum meal consumption, time-locked high-frequency broadband activity at the time of food intake discriminates food types and is associated with cue-specific activity during the task. These findings reveal spatiotemporally-specific activity in the human insulo-opercular cortex that underlies anticipatory evaluation of food across both controlled and naturalistic settings. Animal studies have shown that insulo-opercular network function is critical in gustation and in behaviour based on anticipated food availability. The authors describe activities within the human insulo-opercular cortex which underlie anticipatory food evaluation in both controlled and naturalistic settings.
Collapse
|
19
|
Pairing Binge Drinking and a High-Fat Diet in Adolescence Modulates the Inflammatory Effects of Subsequent Alcohol Consumption in Mice. Int J Mol Sci 2021; 22:ijms22105279. [PMID: 34067897 PMCID: PMC8157004 DOI: 10.3390/ijms22105279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/08/2021] [Accepted: 05/15/2021] [Indexed: 12/12/2022] Open
Abstract
Alcohol binge drinking (BD) and poor nutritional habits are two frequent behaviors among many adolescents that alter gut microbiota in a pro-inflammatory direction. Dysbiotic changes in the gut microbiome are observed after alcohol and high-fat diet (HFD) consumption, even before obesity onset. In this study, we investigate the neuroinflammatory response of adolescent BD when combined with a continuous or intermittent HFD and its effects on adult ethanol consumption by using a self-administration (SA) paradigm in mice. The inflammatory biomarkers IL-6 and CX3CL1 were measured in the striatum 24 h after BD, 3 weeks later and after the ethanol (EtOH) SA. Adolescent BD increased alcohol consumption in the oral SA and caused a greater motivation to seek the substance. Likewise, mice with intermittent access to HFD exhibited higher EtOH consumption, while the opposite effect was found in mice with continuous HFD access. Biochemical analyses showed that after BD and three weeks later, striatal levels of IL-6 and CX3CL1 were increased. In addition, in saline-treated mice, CX3CL1 was increased after continuous access to HFD. After oral SA procedure, striatal IL-6 was increased only in animals exposed to BD and HFD. In addition, striatal CX3CL1 levels were increased in all BD- and HFD-exposed groups. Overall, our findings show that adolescent BD and intermittent HFD increase adult alcohol intake and point to neuroinflammation as an important mechanism modulating this interaction.
Collapse
|
20
|
Converging vulnerability factors for compulsive food and drug use. Neuropharmacology 2021; 196:108556. [PMID: 33862029 DOI: 10.1016/j.neuropharm.2021.108556] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 12/12/2022]
Abstract
Highly palatable foods and substance of abuse have intersecting neurobiological, metabolic and behavioral effects relevant for understanding vulnerability to conditions related to food (e.g., obesity, binge eating disorder) and drug (e.g., substance use disorder) misuse. Here, we review data from animal models, clinical populations and epidemiological evidence in behavioral, genetic, pathophysiologic and therapeutic domains. Results suggest that consumption of highly palatable food and drugs of abuse both impact and conversely are regulated by metabolic hormones and metabolic status. Palatable foods high in fat and/or sugar can elicit adaptation in brain reward and withdrawal circuitry akin to substances of abuse. Intake of or withdrawal from palatable food can impact behavioral sensitivity to drugs of abuse and vice versa. A robust literature suggests common substrates and roles for negative reinforcement, negative affect, negative urgency, and impulse control deficits, with both highly palatable foods and substances of abuse. Candidate genetic risk loci shared by obesity and alcohol use disorders have been identified in molecules classically associated with both metabolic and motivational functions. Finally, certain drugs may have overlapping therapeutic potential to treat obesity, diabetes, binge-related eating disorders and substance use disorders. Taken together, data are consistent with the hypotheses that compulsive food and substance use share overlapping, interacting substrates at neurobiological and metabolic levels and that motivated behavior associated with feeding or substance use might constitute vulnerability factors for one another. This article is part of the special issue on 'Vulnerabilities to Substance Abuse'.
Collapse
|
21
|
Boswell RG, Potenza MN, Grilo CM. The Neurobiology of Binge-eating Disorder Compared with Obesity: Implications for Differential Therapeutics. Clin Ther 2021; 43:50-69. [PMID: 33257092 PMCID: PMC7902428 DOI: 10.1016/j.clinthera.2020.10.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 10/30/2020] [Accepted: 10/30/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE Emerging work indicates divergence in the neurobiologies of binge-eating disorder (BED) and obesity despite their frequent co-occurrence. This review highlights specific distinguishing aspects of BED, including elevated impulsivity and compulsivity possibly involving the mesocorticolimbic dopamine system, and discusses implications for differential therapeutics for BED. METHODS This narrative review describes epidemiologic, clinical, genetic, and preclinical differences between BED and obesity. Subsequently, this review discusses human neuroimaging work reporting differences in executive functioning, reward processing, and emotion reactivity in BED compared with obesity. Finally, on the basis of the neurobiology of BED, this review identifies existing and new therapeutic agents that may be most promising given their specific targets based on putative mechanisms of action relevant specifically to BED. FINDINGS BED is characterized by elevated impulsivity and compulsivity compared with obesity, which is reflected in divergent neurobiological characteristics and effective pharmacotherapies. Therapeutic agents that influence both reward and executive function systems may be especially effective for BED. IMPLICATIONS Greater attention to impulsivity/compulsivity-related, reward-related, and emotion reactivity-related processes may enhance conceptualization and treatment approaches for patients with BED. Consideration of these distinguishing characteristics and processes could have implications for more targeted pharmacologic treatment research and interventions.
Collapse
Affiliation(s)
- Rebecca G Boswell
- Yale School of Medicine, Department of Psychiatry, New Haven, CT, USA.
| | - Marc N Potenza
- Yale School of Medicine, Department of Psychiatry, New Haven, CT, USA; Connecticut Mental Health Center, New Haven, CT, USA; Connecticut Council on Problem Gambling, Wethersfield, CT, USA; Yale School of Medicine, Child Study Center, New Haven, CT, USA; Yale University, Department of Neuroscience, New Haven, CT, USA
| | - Carlos M Grilo
- Yale School of Medicine, Department of Psychiatry, New Haven, CT, USA; Yale University, Department of Psychology, New Haven, CT, USA
| |
Collapse
|
22
|
Hildebrandt BA, Ahmari SE. Breaking It Down: Investigation of Binge Eating Components in Animal Models to Enhance Translation. Front Psychiatry 2021; 12:728535. [PMID: 34484010 PMCID: PMC8414642 DOI: 10.3389/fpsyt.2021.728535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/19/2021] [Indexed: 12/28/2022] Open
Abstract
Binge eating (BE) is a core eating disorder behavior that is present across nearly all eating disorder diagnoses (e. g., bulimia nervosa, binge eating disorder, anorexia nervosa binge/purge subtype), and is also widely present in the general population. Despite the prevalence of BE, limited treatment options exist and there are often high rates of relapse after treatment. There is evidence showing that genetic factors contribute to the heritability of BE and support for biological contributions to BE. However, more work is needed to fully understand neurobiological mechanisms underlying BE. One approach to target this problem is to separate BE into its distinct clinical components that can be more easily modeled using pre-clinical approaches. To date, a variety of animal models for BE have been used in pre-clinical studies; but there have been challenges translating this work to human BE. Here, we review these pre-clinical approaches by breaking them down into three clinically-significant component parts (1) consumption of a large amount of food; (2) food consumption within a short period of time; and (3) loss of control over eating. We propose that this rubric identifies the most frequently used and effective ways to model components of BE behavior using pre-clinical approaches with the strongest clinical relevance. Finally, we discuss how current pre-clinical models have been integrated with techniques using targeted neurobiological approaches and propose ways to improve translation of pre-clinical work to human investigations of BE that could enhance our understanding of BE behavior.
Collapse
Affiliation(s)
- Britny A Hildebrandt
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Susanne E Ahmari
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.,Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States.,Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States
| |
Collapse
|
23
|
Darevsky D, Hopf FW. Behavioral indicators of succeeding and failing under higher-challenge compulsion-like alcohol drinking in rat. Behav Brain Res 2020; 393:112768. [PMID: 32544510 PMCID: PMC7444822 DOI: 10.1016/j.bbr.2020.112768] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 06/05/2020] [Accepted: 06/07/2020] [Indexed: 01/04/2023]
Abstract
Intake despite negative consequences (compulsivity) contributes strongly to the harm of alcohol use disorder, making the underlying psychological and circuit mechanisms of great importance. To gain insight into possible underlying action strategies, we compared rat licking microstructure across compulsion-like and non-compulsive conditions. We previously showed that drinking under a moderate-challenge, quinine-alcohol model (Alc-ModQ) shows less variable responding in many measures, suggesting a more automatic strategy to overcome challenge. Here, we reanalyzed our original data, newly focusing on the behavioral profile of higher-challenge intake (100 mg/L quinine in alcohol, Alc-HighQ). Alc-HighQ greatly dropped consumption, yet retained aspects of greater automaticity and drive seen with Alc-ModQ, including earlier bout initiation and measures suggesting more stereotyped tongue control. In contrast, Alc-HighQ disordered bout generation and timing. Importantly, only fast-starting bouts persisted under Alc-HighQ, and while there were many fewer longer Alc-HighQ bouts, they still contributed >50 % of consumption. Also, longer bouts under Alc-HighQ had an early, several-second period with greater chance of stopping, but afterwards showed similar persistence and recovery from slow licking as other drinking conditions. Together, our findings elucidate novel behavioral indicators of successful and unsuccessful epochs of Alc-HighQ, compulsion-like intake. We also relate findings to congruent human and animal work implicating anterior insula and medial prefrontal cortices as critical for compulsion-like alcohol responding, and where ventral frontal cortex has been more associated with overall action plan and tongue control (retained under Alc-HighQ), with medial cortex more related to proximal action timing (disrupted under Alc-HighQ except after faster bout initiation).
Collapse
Affiliation(s)
- David Darevsky
- University of California at Berkeley, University of California at San Francisco (UCSF), Graduate Program in Bioengineering, United States; UCSF Medical Scientist Training Program, San Francisco, CA, United States; Department of Neurology, UCSF, United States
| | - Frederic W Hopf
- Department of Neurology, UCSF, United States; Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States.
| |
Collapse
|
24
|
Sun K, Mu Q, Chang H, Zhang C, Wang Y, Rong S, Liu S, Zuo D, He Z, Wan D, Yang H, Wang F, Sun T. Postretrieval Microinjection of Baclofen Into the Agranular Insular Cortex Inhibits Morphine-Induced CPP by Disrupting Reconsolidation. Front Pharmacol 2020; 11:743. [PMID: 32508658 PMCID: PMC7248341 DOI: 10.3389/fphar.2020.00743] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/04/2020] [Indexed: 12/15/2022] Open
Abstract
Environmental cues associated with drug abuse are powerful mediators of drug craving and relapse in substance-abuse disorders. Consequently, attenuating the strength of cue-drug memories could reduce the number of factors that cause drug craving and relapse. Interestingly, impairing cue-drug memory reconsolidation is a generally accepted strategy aimed at reducing the intensity of cues that trigger drug-seeking and drug-taking behaviors. In addition, the agranular insular cortex (AI) is an important component of the neural circuits underlying drug-related memory reconsolidation. GABAB receptors (GABABRs) are potential targets for the treatment of addiction, and baclofen (BLF) is the only prototypical GABAB agonist available for application in clinical addiction treatment. Furthermore, ΔFosB is considered a biomarker for the evaluation of potential therapeutic interventions for addiction. Here, we used the morphine-induced conditioned place preference (CPP) paradigm to investigate whether postretrieval microinjections of BLF into the AI could affect reconsolidation of drug-reward memory, reinstatement of CPP, and the level of ΔFosB in mice. Our results showed that BLF infused into the AI immediately following morphine CPP memory retrieval, but not 6 h postretrieval or following nonretrieval, could eliminate the expression of a morphine CPP memory. This effect persisted in a morphine-priming–induced reinstatement test, suggesting that BLF in the AI was capable of preventing the reconsolidation of the morphine CPP memory. Our results also showed that the elimination of morphine CPP memory was associated with reduced morphine-associated ΔFosB expression in the longer term. Taken together, the results of our research provide evidence to support that GABABRs in the AI have an important role in drug-cue memory reconsolidation and further our understanding of the role of the AI in drug-related learning and memory.
Collapse
Affiliation(s)
- Kuisheng Sun
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, The People's Hospital of Gaozhou, Gaozhou, China
| | - Qingchun Mu
- Department of Neurosurgery, The People's Hospital of Gaozhou, Gaozhou, China
| | - Haigang Chang
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Chun Zhang
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Yehua Wang
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Shikuo Rong
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Shenhai Liu
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Di Zuo
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Zhenquan He
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China
| | - Ding Wan
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Hua Yang
- Department of Critical Care Medicine, The People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, China
| | - Feng Wang
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Tao Sun
- Ningxia Key Laboratory of Cerebrocranial Disease, Incubation Base of National Key Laboratory, Ningxia Medical University, Yinchuan, China.,Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China
| |
Collapse
|
25
|
Probing the motivational circuitry of binge eating. Neuropsychopharmacology 2020; 45:577-578. [PMID: 31740747 PMCID: PMC7224209 DOI: 10.1038/s41386-019-0568-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 11/03/2019] [Indexed: 11/09/2022]
|
26
|
Pal P, Ray S. Alcoholic Liver Disease: A Comprehensive Review. EUROPEAN MEDICAL JOURNAL 2016. [DOI: 10.33590/emj/10312346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Alcoholic liver disease, a leading cause of morbidity, mortality, and cirrhosis, can range from simple steatosis to hepatocellular carcinoma. Multiple mechanisms such as oxidative stress, mitochondrial dysfunction, and alteration in gut-liver axis have been proposed for the pathogenesis of alcoholic liver disease. Based on different prognostic models, alcoholic hepatitis patients can be stratified into sub-groups and specific pharmacological therapy can be started. Alcohol abstinence has a clear cut mortality benefit and nutritional support is very important as most of the patients are malnourished and in a hypercatabolic state. Other than conventional glucocorticoids and pentoxifylline, newer agents and combination therapy can be used in severe alcoholic hepatitis in patients not responsive to conventional glucocorticoid therapy. Liver transplantation improves survival in advanced alcoholic cirrhosis and it can be an option in severe alcoholic hepatitis patients who are not responding to other medical therapies. Whether early transplantation can improve the survival compared with the conventional waiting period of 6 months is an active area of investigation. This is due to the fact that most of the disease-related mortality occurs in the first 2 months.
Collapse
Affiliation(s)
- Partha Pal
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
| | - Sayantan Ray
- Department of Endocrinology, Institute of Post Graduate Medical Education & Research (IPGMER) and SSKM Hospital, Kolkata, India
| |
Collapse
|