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Li Z, Zheng L, Wang J, Wang L, Qi Y, Amin B, Zhu J, Zhang N. Dopamine in the regulation of glucose and lipid metabolism: a narrative review. Obesity (Silver Spring) 2024; 32:1632-1645. [PMID: 39081007 DOI: 10.1002/oby.24068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 08/29/2024]
Abstract
OBJECTIVE Owing to the global obesity epidemic, understanding the regulatory mechanisms of glucose and lipid metabolism has become increasingly important. The dopaminergic system, including dopamine, dopamine receptors, dopamine transporters, and other components, is involved in numerous physiological and pathological processes. However, the mechanism of action of the dopaminergic system in glucose and lipid metabolism is poorly understood. In this review, we examine the role of the dopaminergic system in glucose and lipid metabolism. RESULTS The dopaminergic system regulates glucose and lipid metabolism through several mechanisms. It regulates various activities at the central level, including appetite control and decision-making, which contribute to regulating body weight and energy metabolism. In the pituitary gland, dopamine inhibits prolactin production and promotes insulin secretion through dopamine receptor 2. Furthermore, it can influence various physiological components in the peripheral system, such as pancreatic β cells, glucagon-like peptide-1, adipocytes, hepatocytes, and muscle, by regulating insulin and glucagon secretion, glucose uptake and use, and fatty acid metabolism. CONCLUSIONS The role of dopamine in regulating glucose and lipid metabolism has significant implications for the physiology and pathogenesis of disease. The potential therapeutic value of dopamine lies in its effects on metabolic disorders.
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Affiliation(s)
- Zhehong Li
- Surgery Centre of Diabetes Mellitus, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Lifei Zheng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jing Wang
- Surgery Centre of Diabetes Mellitus, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Liang Wang
- Surgery Centre of Diabetes Mellitus, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Yao Qi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Buhe Amin
- Surgery Centre of Diabetes Mellitus, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Jinxia Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Nengwei Zhang
- Surgery Centre of Diabetes Mellitus, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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2
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Zhao Z, Stern SA. Homeostatic feeding in hedonic centres. Nat Metab 2024; 6:1433-1434. [PMID: 39147932 DOI: 10.1038/s42255-024-01089-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Affiliation(s)
- Zhe Zhao
- Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA
| | - Sarah A Stern
- Max Planck Florida Institute for Neuroscience, Jupiter, FL, USA.
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3
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Kietzman HW, Trinoskey-Rice G, Seo EH, Guo J, Gourley SL. Neuronal Ensembles in the Amygdala Allow Social Information to Motivate Later Decisions. J Neurosci 2024; 44:e1848232024. [PMID: 38499360 PMCID: PMC11026342 DOI: 10.1523/jneurosci.1848-23.2024] [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: 09/28/2023] [Revised: 02/02/2024] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Abstract
Social experiences carry tremendous weight in our decision-making, even when social partners are not present. To determine mechanisms, we trained female mice to respond for two food reinforcers. Then, one food was paired with a novel conspecific. Mice later favored the conspecific-associated food, even in the absence of the conspecific. Chemogenetically silencing projections from the prelimbic subregion (PL) of the medial prefrontal cortex to the basolateral amygdala (BLA) obstructed this preference while leaving social discrimination intact, indicating that these projections are necessary for socially driven choice. Further, mice that performed the task had greater densities of dendritic spines on excitatory BLA neurons relative to mice that did not. We next induced chemogenetic receptors in cells active during social interactions-when mice were encoding information that impacted later behavior. BLA neurons stimulated by social experience were necessary for mice to later favor rewards associated with social conspecifics but not make other choices. This profile contrasted with that of PL neurons stimulated by social experience, which were necessary for choice behavior in social and nonsocial contexts alike. The PL may convey a generalized signal allowing mice to favor particular rewards, while units in the BLA process more specialized information, together supporting choice motivated by social information.
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Affiliation(s)
- Henry W Kietzman
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut 06510
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322
- Department of Psychiatry, Emory University School of Medicine, Atlanta, Georgia 30322
- Graduate Program in Neuroscience, Emory University, Atlanta, Georgia 30322
- Emory National Primate Research Center, Emory University, Atlanta, Georgia 30329
| | - Gracy Trinoskey-Rice
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322
- Department of Psychiatry, Emory University School of Medicine, Atlanta, Georgia 30322
- Emory National Primate Research Center, Emory University, Atlanta, Georgia 30329
| | - Esther H Seo
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322
- Department of Psychiatry, Emory University School of Medicine, Atlanta, Georgia 30322
- Emory National Primate Research Center, Emory University, Atlanta, Georgia 30329
| | - Jidong Guo
- Emory National Primate Research Center, Emory University, Atlanta, Georgia 30329
| | - Shannon L Gourley
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322
- Department of Psychiatry, Emory University School of Medicine, Atlanta, Georgia 30322
- Graduate Program in Neuroscience, Emory University, Atlanta, Georgia 30322
- Emory National Primate Research Center, Emory University, Atlanta, Georgia 30329
- Children's Healthcare of Atlanta, Atlanta, Georgia 30322
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Wu Q, Long Y, Peng X, Song C, Xiao J, Wang X, Liu F, Xie P, Yang J, Shi Z, Hu Z, McCaig C, St Clair D, Lang B, Wu R. Prefrontal cortical dopamine deficit may cause impaired glucose metabolism in schizophrenia. Transl Psychiatry 2024; 14:79. [PMID: 38320995 PMCID: PMC10847097 DOI: 10.1038/s41398-024-02800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 11/04/2023] [Accepted: 01/22/2024] [Indexed: 02/08/2024] Open
Abstract
The brain neurotramsmitter dopamine may play an important role in modulating systemic glucose homeostasis. In seven hundred and four drug- naïve patients with first-episode schizophrenia, we provide robust evidence of positive associations between negative symptoms of schizophrenia and high fasting blood glucose. We then show that glucose metabolism and negative symptoms are improved when intermittent theta burst stimulation (iTBS) on prefrontal cortex (PFC) is performed in patients with predominantly negative symptoms of schizophrenia. These findings led us to hypothesize that the prefrontal cortical dopamine deficit, which is known to be associated with negative symptoms, may be responsible for abnormal glucose metabolism in schizophrenia. To explore this, we optogenetically and chemogenetically inhibited the ventral tegmental area (VTA)-medial prefrontal cortex (mPFC) dopamine projection in mice and found both procedures caused glucose intolerance. Moreover, microinjection of dopamine two receptor (D2R) neuron antagonists into mPFC in mice significantly impaired glucose tolerance. Finally, a transgenic mouse model of psychosis named Disc1tr exhibited depressive-like symptoms, impaired glucose homeostasis, and compared to wild type littermates reduced D2R expression in prefrontal cortex.
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Affiliation(s)
- Qiongqiong Wu
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Affiliated Mental Health Centre & Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310013, China
| | - Yujun Long
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Xingjie Peng
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Chuhan Song
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Jingmei Xiao
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Xiaoyi Wang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Furu Liu
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Peng Xie
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Jinqing Yang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Zhe Shi
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhonghua Hu
- Hunan Key Laboratory of Molecular Precision Medicine, Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Colin McCaig
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - David St Clair
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Bing Lang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Renrong Wu
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
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Cui X, Tong Q, Xu H, Xie C, Xiao L. A putative loop connection between VTA dopamine neurons and nucleus accumbens encodes positive valence to compensate for hunger. Prog Neurobiol 2023; 229:102503. [PMID: 37451329 DOI: 10.1016/j.pneurobio.2023.102503] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/08/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Dopamine (DA) signal play pivotal roles in regulating motivated behaviors, including feeding behavior, but the role of midbrain DA neurons in modulating food intake and neural circuitry mechanisms remain largely unknown. Here, we found that activating but not inhibiting ventral tegmental area (VTA) DA neurons reduces mouse food intake. Furthermore, DA neurons in ventral VTA, especially neurons projecting to the medial nucleus accumbens (NAc), are activated by refeeding in the 24 h fasted mice. Combing neural circuitry tracing, optogenetic, chemogenetic, and pharmacological manipulations, we established that the VTA→medial NAc→VTA loop circuit is critical for the VTA DA neurons activation-induced food intake reduction. Moreover, activating either VTA DA neurons or dopaminergic axons in medial NAc elevates positive valence, which will compensate for the hungry-induced food intake. Thus, our study identifies a subset of positive valence-encoded VTA DA neurons forming possible loop connections with medial NAc that are anorexigenic.
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Affiliation(s)
- Xiao Cui
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, The State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and the Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Qiuping Tong
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, The State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and the Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Hao Xu
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, The State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and the Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Chuantong Xie
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, The State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and the Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Lei Xiao
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, The State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and the Institutes of Brain Science, Fudan University, Shanghai 200032, China.
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Wronski ML, Hohnemann C, Bernardoni F, Bahnsen K, Doose A, Arold D, Borucki K, Holsen LM, Lawson EA, Plessow F, Weidner K, Roessner V, Diestel S, King JA, Seidel M, Ehrlich S. Explicating the role of amygdala substructure alterations in the link between hypoleptinemia and rumination in anorexia nervosa. Acta Psychiatr Scand 2023; 148:368-381. [PMID: 37688292 DOI: 10.1111/acps.13607] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/19/2023] [Accepted: 08/05/2023] [Indexed: 09/10/2023]
Abstract
OBJECTIVE The amygdaloid complex plays a pivotal role in emotion processing and has been associated with rumination transdiagnostically. In anorexia nervosa (AN), we previously observed differential reductions of amygdala nuclei volumes (rostral-medial cluster substantially affected) and, in another study, elevated food-/weight-related rumination. Both amygdala volumes and rumination frequency correlated with characteristically suppressed leptin levels in AN. Thus, we hypothesized that amygdala nuclei alterations might be associated with AN-related rumination and potentially mediate the leptin-rumination relationship in AN. METHODS Rumination (food-/weight-related) was assessed using ecological momentary assessment for a 14-day period. We employed frequentist and Bayesian linear mixed effects models in females with AN (n = 51, 12-29 years, majority admitted to inpatient treatment) and age-matched healthy females (n = 51) to investigate associations between rostral-medial amygdala nuclei volume alterations (accessory basal, cortical, medial nuclei, corticoamygdaloid transitions) and rumination. We analyzed mediation effects using multi-level structural equation models. RESULTS Reduced right accessory basal and cortical nuclei volumes predicted more frequent weight-related rumination in AN; both nuclei fully mediated the effect of leptin on weight-related rumination. In contrast, we found robust evidence for the absence of amygdala nuclei volume effects on rumination in healthy females. CONCLUSION This study provides first evidence for the relevance of specific amygdala substructure reductions regarding cognitive symptom severity in AN and points toward novel mechanistic insight into the relationship between hypoleptinemia and rumination, which might involve the amygdaloid complex. Our findings in AN may have important clinical value with respect to understanding the beneficial neuropsychiatric effects of leptin (treatment) in AN and potentially other psychiatric conditions such as depression.
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Affiliation(s)
- Marie-Louis Wronski
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Charlotte Hohnemann
- Schumpeter School of Business and Economics, Faculty of Economy, University of Wuppertal, Wuppertal, Germany
| | - Fabio Bernardoni
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Klaas Bahnsen
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Arne Doose
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Dominic Arold
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Katrin Borucki
- Department of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Laura M Holsen
- Division of Women's Health, Department of Medicine/Department of Psychiatry, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Elizabeth A Lawson
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Franziska Plessow
- Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Kerstin Weidner
- Department of Psychotherapy and Psychosomatic Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Veit Roessner
- Department of Child and Adolescent Psychiatry, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Stefan Diestel
- Schumpeter School of Business and Economics, Faculty of Economy, University of Wuppertal, Wuppertal, Germany
| | - Joseph A King
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Maria Seidel
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Stefan Ehrlich
- Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Eating Disorder Treatment and Research Center, Department of Child and Adolescent Psychiatry, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
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Ross RA, Kim A, Das P, Li Y, Choi YK, Thompson AT, Douglas E, Subramanian S, Ramos K, Callahan K, Bolshakov VY, Ressler KJ. Prefrontal cortex melanocortin 4 receptors (MC4R) mediate food intake behavior in male mice. Physiol Behav 2023; 269:114280. [PMID: 37369302 PMCID: PMC10528493 DOI: 10.1016/j.physbeh.2023.114280] [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: 04/03/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND Melanocortin 4 receptor (MC4R) activity in the hypothalamus is crucial for regulation of metabolism and food intake. The peptide ligands for the MC4R are associated with feeding, energy expenditure, and also with complex behaviors that orchestrate energy intake and expenditure, but the downstream neuroanatomical and neurochemical targets associated with these behaviors are elusive. In addition to strong expression in the hypothalamus, the MC4R is highly expressed in the medial prefrontal cortex, a region involved in executive function and decision-making. METHODS Using viral techniques in genetically modified male mice combined with molecular techniques, we identify and define the effects on feeding behavior of a novel population of MC4R expressing neurons in the infralimbic (IL) region of the cortex. RESULTS Here, we describe a novel population of MC4R-expressing neurons in the IL of the mouse prefrontal cortex that are glutamatergic, receive input from melanocortinergic neurons, and project to multiple regions that coordinate appetitive responses to food-related stimuli. The neurons are stimulated by application of MC4R-specific peptidergic agonist, THIQ. Deletion of MC4R from the IL neurons causes increased food intake and body weight gain and impaired executive function in simple food-related behavior tasks. CONCLUSION Together, these data suggest that MC4R neurons of the IL play a critical role in the regulation of food intake in male mice.
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Affiliation(s)
- Rachel A Ross
- Departments of Neuroscience and Psychiatry, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Psychiatry, McLean Hospital, Boston, MA, USA.
| | - Angela Kim
- Department of Endocrinology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Priyanka Das
- Departments of Neuroscience and Psychiatry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Yan Li
- Department of Psychiatry, McLean Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | | | | | | | | | - Kat Ramos
- Northeastern University, Boston, MA, USA
| | - Kathryn Callahan
- Departments of Neuroscience and Psychiatry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Vadim Y Bolshakov
- Department of Psychiatry, McLean Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Kerry J Ressler
- Department of Psychiatry, McLean Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
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Greiner EM, Witt ME, Moran SJ, Petrovich GD. Activation patterns in male and female forebrain circuitries during food consumption under novelty. RESEARCH SQUARE 2023:rs.3.rs-3328570. [PMID: 37790415 PMCID: PMC10543437 DOI: 10.21203/rs.3.rs-3328570/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
The influence of novelty on feeding behavior is significant and can override both homeostatic and hedonic drives due to the uncertainty of potential danger. Previous work found that novel food hypophagia is enhanced in a novel environment and that males habituate faster than females. The current study's aim was to identify the neural substrates of separate effects of food and context novelty. Adult male and female rats were tested for consumption of a novel or family food in either a familiar or in a novel context. Test-induced Fos expression was measured in the amygdalar, thalamic, striatal, and prefrontal cortex regions that are important for appetitive responding, contextual processing, and reward motivation. Food and context novelty induced strikingly different activation patterns. Novel context induced Fos robustly in almost every region analyzed, including the central (CEA) and basolateral complex nuclei of the amygdala, the thalamic paraventricular (PVT) and reuniens nuclei, the nucleus accumbens (ACB), the medial prefrontal cortex prelimbic and infralimbic areas, and the dorsal agranular insular cortex (AI). Novel food induced Fos in a few select regions: the CEA, anterior basomedial nucleus of the amygdala, anterior PVT, and posterior AI. There were also sex differences in activation patterns. The capsular and lateral CEA had greater activation for male groups and the anterior PVT, ACB ventral core and shell had greater activation for female groups. These activation patterns and correlations between regions, suggest that distinct functional circuitries control feeding behavior when food is novel and when eating occurs in a novel environment.
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López-Castro T, Martin L, Nickley S, Saraiya TC, Melara RD. Frontal Alpha Asymmetry in Posttraumatic Stress Disorder: Group Differences Among Individuals With and Without PTSD During an Inhibitory Control Task. Clin EEG Neurosci 2023; 54:472-482. [PMID: 34657474 PMCID: PMC9022109 DOI: 10.1177/15500594211046703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The current study examined frontal alpha asymmetry (FAA) as a marker of approach- and avoidance-related prefrontal activity in participants with and without trauma exposure and posttraumatic stress disorder (PTSD). We investigated FAA in an inhibitory control paradigm (threatening vs nonthreatening cues) under 2 levels of cognitive demand (baseline: images constant within a block of trials; vs filtering: images varied randomly within a block) in 3 groups of participants: individuals with PTSD (n = 16), exposed to trauma but without PTSD (n = 14), and a control group without PTSD or trauma exposure (n = 15). Under low demand (baseline), both PTSD and trauma-exposed participants exhibited significantly greater relative left than right frontal brain activity (approach) to threatening than to nonthreatening images. Under high demand (filtering), no FAA differences were found between threatening and nonthreatening images, but PTSD participants revealed more relative left than right FAA, whereas trauma-exposed participants showed reduced left relative right FAA. In all conditions, healthy controls exhibited reduced left relative to right FAA and no differences between threatening and nonthreatening images. Study findings suggest dysfunctional prefrontal mechanisms of emotion regulation in PTSD, but adaptive prefrontal regulation in trauma-exposed individuals without PTSD.
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Affiliation(s)
- Teresa López-Castro
- Psychology Department, The City College of New York, The City University of New York, 160 Convent Avenue, New York, NY 10032
| | - Laura Martin
- George Mason University, 4400 University Drive, Fairfax, VA, 22030
| | - Sean Nickley
- Psychology Department, Long Island University, 1 University Plaza, H811, Brooklyn, NY 11201
| | - Tanya C. Saraiya
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC
| | - Robert D. Melara
- Psychology Department, The City College of New York, The City University of New York, 160 Convent Avenue, New York, NY 10032
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Hatter JA, Scott MM. Selective ablation of VIP interneurons in the rodent prefrontal cortex results in increased impulsivity. PLoS One 2023; 18:e0286209. [PMID: 37267385 DOI: 10.1371/journal.pone.0286209] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/10/2023] [Indexed: 06/04/2023] Open
Abstract
It has been well-established that novelty-seeking and impulsivity are significant risk factors for the development of psychological disorders, including substance use disorder and behavioral addictions. While dysfunction in the prefrontal cortex is at the crux of these disorders, little is known at the cellular level about how alterations in neuron activity can drive changes in impulsivity and novelty seeking. We harnessed a cre-dependent caspase-3 ablation in both male and female mice to selectively ablate vasoactive intestinal peptide (VIP)-expressing interneurons in the prefrontal cortex to better explore how this microcircuit functions during specific behavioral tasks. Caspase-ablated animals had no changes in anxiety-like behaviors or hedonic food intake but had a specific increase in impulsive responding during longer trials in the three-choice serial reaction time test. Together, these data suggest a circuit-level mechanism in which VIP interneurons function as a gate to selectively respond during periods of high expectation.
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Affiliation(s)
- Jessica A Hatter
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia, United States of America
| | - Michael M Scott
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia, United States of America
- Department of Toxicology, Charles River Laboratories, Edinburgh, Scotland
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11
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Clarke RE, Voigt K, Reichenbach A, Stark R, Bharania U, Dempsey H, Lockie SH, Mequinion M, Lemus M, Wei B, Reed F, Rawlinson S, Nunez-Iglesias J, Foldi CJ, Kravitz AV, Verdejo-Garcia A, Andrews ZB. Identification of a Stress-Sensitive Anorexigenic Neurocircuit From Medial Prefrontal Cortex to Lateral Hypothalamus. Biol Psychiatry 2023; 93:309-321. [PMID: 36400605 DOI: 10.1016/j.biopsych.2022.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND A greater understanding of how the brain controls appetite is fundamental to developing new approaches for treating diseases characterized by dysfunctional feeding behavior, such as obesity and anorexia nervosa. METHODS By modeling neural network dynamics related to homeostatic state and body mass index, we identified a novel pathway projecting from the medial prefrontal cortex (mPFC) to the lateral hypothalamus (LH) in humans (n = 53). We then assessed the physiological role and dissected the function of this mPFC-LH circuit in mice. RESULTS In vivo recordings of population calcium activity revealed that this glutamatergic mPFC-LH pathway is activated in response to acute stressors and inhibited during food consumption, suggesting a role in stress-related control over food intake. Consistent with this role, inhibition of this circuit increased feeding and sucrose seeking during mild stressors, but not under nonstressful conditions. Finally, chemogenetic or optogenetic activation of the mPFC-LH pathway is sufficient to suppress food intake and sucrose seeking in mice. CONCLUSIONS These studies identify a glutamatergic mPFC-LH circuit as a novel stress-sensitive anorexigenic neural pathway involved in the cortical control of food intake.
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Affiliation(s)
- Rachel E Clarke
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Katharina Voigt
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
| | - Alex Reichenbach
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Romana Stark
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Urvi Bharania
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Harry Dempsey
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Sarah H Lockie
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Mathieu Mequinion
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Moyra Lemus
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Bowen Wei
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Felicia Reed
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Sasha Rawlinson
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Juan Nunez-Iglesias
- Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Claire J Foldi
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Alexxai V Kravitz
- Departments of Psychiatry, Anesthesiology, and Neuroscience, Washington University in St. Louis, St. Louis, Missouri
| | - Antonio Verdejo-Garcia
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia.
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12
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Bodas DS, Maduskar A, Kaniganti T, Wakhloo D, Balasubramanian A, Subhedar N, Ghose A. Convergent Energy State-Dependent Antagonistic Signaling by Cocaine- and Amphetamine-Regulated Transcript (CART) and Neuropeptide Y (NPY) Modulates the Plasticity of Forebrain Neurons to Regulate Feeding in Zebrafish. J Neurosci 2023; 43:1089-1110. [PMID: 36599680 PMCID: PMC9962846 DOI: 10.1523/jneurosci.2426-21.2022] [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: 12/11/2021] [Revised: 11/28/2022] [Accepted: 12/22/2022] [Indexed: 01/06/2023] Open
Abstract
Dynamic reconfiguration of circuit function subserves the flexibility of innate behaviors tuned to physiological states. Internal energy stores adaptively regulate feeding-associated behaviors and integrate opposing hunger and satiety signals at the level of neural circuits. Across vertebrate lineages, the neuropeptides cocaine- and amphetamine-regulated transcript (CART) and neuropeptide Y (NPY) have potent anorexic and orexic functions, respectively, and show energy-state-dependent expression in interoceptive neurons. However, how the antagonistic activities of these peptides modulate circuit plasticity remains unclear. Using behavioral, neuroanatomical, and activity analysis in adult zebrafish of both sexes, along with pharmacological interventions, we show that CART and NPY activities converge on a population of neurons in the dorsomedial telencephalon (Dm). Although CART facilitates glutamatergic neurotransmission at the Dm, NPY dampens the response to glutamate. In energy-rich states, CART enhances NMDA receptor (NMDAR) function by protein kinase A/protein kinase C (PKA/PKC)-mediated phosphorylation of the NR1 subunit of the NMDAR complex. Conversely, starvation triggers NPY-mediated reduction in phosphorylated NR1 via calcineurin activation and inhibition of cAMP production leading to reduced responsiveness to glutamate. Our data identify convergent integration of CART and NPY inputs by the Dm neurons to generate nutritional state-dependent circuit plasticity that is correlated with the behavioral switch induced by the opposing actions of satiety and hunger signals.SIGNIFICANCE STATEMENT Internal energy needs reconfigure neuronal circuits to adaptively regulate feeding behavior. Energy-state-dependent neuropeptide release can signal energy status to feeding-associated circuits and modulate circuit function. CART and NPY are major anorexic and orexic factors, respectively, but the intracellular signaling pathways used by these peptides to alter circuit function remain uncharacterized. We show that CART and NPY-expressing neurons from energy-state interoceptive areas project to a novel telencephalic region, Dm, in adult zebrafish. CART increases the excitability of Dm neurons, whereas NPY opposes CART activity. Antagonistic signaling by CART and NPY converge onto NMDA-receptor function to modulate glutamatergic neurotransmission. Thus, opposing activities of anorexic CART and orexic NPY reconfigure circuit function to generate flexibility in feeding behavior.
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Affiliation(s)
- Devika S Bodas
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Aditi Maduskar
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Tarun Kaniganti
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Debia Wakhloo
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | | | - Nishikant Subhedar
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Aurnab Ghose
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
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13
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Valente EEL, Klotz JL, Egert-McLean AM, Costa GW, May JB, Harmon DL. Influence of intra-abomasal administration of L-DOPA on circulating catecholamines and feed intake in cattle. FRONTIERS IN ANIMAL SCIENCE 2023. [DOI: 10.3389/fanim.2023.1127575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Dopamine has multiple physiological functions including feed intake control in which it can act as an anorectic or orexigenic agent. This study had the objective to evaluate intra-abomasal administration of L-DOPA (levodopa; L-3,4-dihydroxyphenylalanine) from -Mucuna pruriens on circulating catecholamines, indicators of energy metabolism and feed intake in cattle. Eight Holstein steers (340 ± 20 kg) fitted with ruminal cannula were used in a replicated 4 x 4 Latin Square design experiment. Intra-abomasal infusion of L-DOPA at 0, 0.5, 1 and 2 mg/kg BW was carried out for seven days and blood samples were collected at 0, 30, 60, 120, 240 and 480 min from L-DOPA infusion on day 7. The area under the curve (AUC) of plasma L-DOPA and free dopamine increased quadratically with the administration of L-DOPA. However, the AUC of plasma total dopamine had a positive linear response with the increase of L-DOPA. Conversely, the serum 5-hydroxytriptophan (5-HTP), plasma serotonin, serum serotonin, serum tyrosine, plasma glucose and plasma free fatty acids were not affected by the intra-abomasal infusion of L-DOPA. The circulating concentration of the epinephrine, norepinephrine, serotonin, glucose and free fatty acids did not change with L-DOPA infusion. It can be concluded that intra-abomasal L-DOPA administration produced a strong increase in circulating dopamine with no change in energy metabolites and feed intake in cattle.
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14
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Obray JD, Landin JD, Vaughan DT, Scofield MD, Chandler LJ. Adolescent alcohol exposure reduces dopamine 1 receptor modulation of prelimbic neurons projecting to the nucleus accumbens and basolateral amygdala. ADDICTION NEUROSCIENCE 2022; 4:100044. [PMID: 36643604 PMCID: PMC9836047 DOI: 10.1016/j.addicn.2022.100044] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Binge drinking during adolescence is highly prevalent despite increasing evidence of its long-term impact on behaviors associated with modulation of behavioral flexibility by the medial prefrontal cortex (mPFC). In the present study, male and female rats underwent adolescent intermittent ethanol (AIE) exposure by vapor inhalation. After aging to adulthood, retrograde bead labelling and viral tagging were used to identify populations of neurons in the prelimbic region (PrL) of the mPFC that project to specific subcortical targets. Electrophysiological recording from bead-labelled neurons in PrL slices revealed that AIE did not alter the intrinsic excitability of PrL neurons that projected to either the NAc or the BLA. Similarly, recordings of spontaneous inhibitory and excitatory post-synaptic currents revealed no AIE-induced changes in synaptic drive onto either population of projection neurons. In contrast, AIE exposure was associated with a loss of dopamine receptor 1 (D1), but no change in dopamine receptor 2 (D2), modulation of evoked firing of both populations of projection neurons. Lastly, confocal imaging of proximal and apical dendritic tufts of viral-labelled PrL neurons that projected to the nucleus accumbens (NAc) revealed AIE did not alter the density of dendritic spines. Together, these observations provide evidence that AIE exposure results in disruption of D1 receptor modulation of PrL inputs to at least two major subcortical target regions that have been implicated in AIE-induced long-term changes in behavioral control.
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Affiliation(s)
- J. Daniel Obray
- Department of Neuroscience, Medical University of South Carolina, 30 Courtenay Drive, Charleston SC 29425, USA
| | - Justine D. Landin
- Department of Neuroscience, Medical University of South Carolina, 30 Courtenay Drive, Charleston SC 29425, USA
| | - Dylan T. Vaughan
- Department of Neuroscience, Medical University of South Carolina, 30 Courtenay Drive, Charleston SC 29425, USA
| | - Michael D. Scofield
- Department of Neuroscience, Medical University of South Carolina, 30 Courtenay Drive, Charleston SC 29425, USA,Department of Anesthesiology, Medical University of South Carolina, Charleston SC, USA
| | - L. Judson Chandler
- Department of Neuroscience, Medical University of South Carolina, 30 Courtenay Drive, Charleston SC 29425, USA,Corresponding author. (L.J. Chandler)
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15
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Linders LE, Patrikiou L, Soiza-Reilly M, Schut EHS, van Schaffelaar BF, Böger L, Wolterink-Donselaar IG, Luijendijk MCM, Adan RAH, Meye FJ. Stress-driven potentiation of lateral hypothalamic synapses onto ventral tegmental area dopamine neurons causes increased consumption of palatable food. Nat Commun 2022; 13:6898. [PMID: 36371405 PMCID: PMC9653441 DOI: 10.1038/s41467-022-34625-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 11/01/2022] [Indexed: 11/13/2022] Open
Abstract
Stress can cause overconsumption of palatable high caloric food. Despite the important role of stress eating in obesity and (binge) eating disorders, its underlying neural mechanisms remain unclear. Here we demonstrate in mice that stress alters lateral hypothalamic area (LHA) control over the ventral tegmental area (VTA), thereby promoting overconsumption of palatable food. Specifically, we show that glutamatergic LHA neurons projecting to the VTA are activated by social stress, after which their synapses onto dopamine neurons are potentiated via AMPA receptor subunit alterations. We find that stress-driven strengthening of these specific synapses increases LHA control over dopamine output in key target areas like the prefrontal cortex. Finally, we demonstrate that while inducing LHA-VTA glutamatergic potentiation increases palatable fat intake, reducing stress-driven potentiation of this connection prevents such stress eating. Overall, this study provides insights in the neural circuit adaptations caused by stress that drive overconsumption of palatable food.
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Affiliation(s)
- Louisa E. Linders
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Lefkothea Patrikiou
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Mariano Soiza-Reilly
- grid.7345.50000 0001 0056 1981Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET, University of Buenos Aires, Buenos Aires, Argentina
| | - Evelien H. S. Schut
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Bram F. van Schaffelaar
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Leonard Böger
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Inge G. Wolterink-Donselaar
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Mieneke C. M. Luijendijk
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Roger A. H. Adan
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Frank J. Meye
- grid.5477.10000000120346234Department of Translational Neuroscience, Brain Center, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
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16
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Wang J, Beecher K, Chehrehasa F, Moody H. The limitations of investigating appetite through circuit manipulations: are we biting off more than we can chew? Rev Neurosci 2022; 34:295-311. [PMID: 36054842 DOI: 10.1515/revneuro-2022-0072] [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: 06/14/2022] [Accepted: 07/09/2022] [Indexed: 11/15/2022]
Abstract
Disordered eating can underpin a number of debilitating and prevalent chronic diseases, such as obesity. Broader advances in psychopharmacology and biology have motivated some neuroscientists to address diet-induced obesity through reductionist, pre-clinical eating investigations on the rodent brain. Specifically, chemogenetic and optogenetic methods developed in the 21st century allow neuroscientists to perform in vivo, region-specific/projection-specific/promoter-specific circuit manipulations and immediately assess the impact of these manipulations on rodent feeding. These studies are able to rigorously conclude whether a specific neuronal population regulates feeding behaviour in the hope of eventually developing a mechanistic neuroanatomical map of appetite regulation. However, an artificially stimulated/inhibited rodent neuronal population that changes feeding behaviour does not necessarily represent a pharmacological target for treating eating disorders in humans. Chemogenetic/optogenetic findings must therefore be triangulated with the array of theories that contribute to our understanding of appetite. The objective of this review is to provide a wide-ranging discussion of the limitations of chemogenetic/optogenetic circuit manipulation experiments in rodents that are used to investigate appetite. Stepping into and outside of medical science epistemologies, this paper draws on philosophy of science, nutrition, addiction biology and neurophilosophy to prompt more integrative, transdisciplinary interpretations of chemogenetic/optogenetic appetite data. Through discussing the various technical and epistemological limitations of these data, we provide both an overview of chemogenetics and optogenetics accessible to non-neuroscientist obesity researchers, as well as a resource for neuroscientists to expand the number of lenses through which they interpret their circuit manipulation findings.
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Affiliation(s)
- Joshua Wang
- School of Clinical Sciences, Faculty of Health, Queensland University of Technology, 2 George Street, Brisbane 4000, QLD, Australia
| | - Kate Beecher
- UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Building 71/918 Royal Brisbane and Women's Hospital Campus, Herston 4029, QLD, Australia
| | - Fatemeh Chehrehasa
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, 2 George Street, Brisbane 4000, QLD, Australia
| | - Hayley Moody
- Queensland University of Technology, 2 George Street, Brisbane 4000, QLD, Australia
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17
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Abstract
Anorexia is a loss of appetite or an inability to eat and is often associated with eating disorders. However, animal anorexia is physiologically regulated as a part of the life cycle; for instance, during hibernation, migration or incubation. Anorexia nervosa (AN), on the other hand, is a common eating disorder among adolescent females that experience an intense fear of gaining weight due to body image distortion that results in voluntary avoidance of food intake and, thus, severe weight loss. It has been shown that the neurobiology of feeding extends beyond the hypothalamus. The prefrontal cortex (PFC) is involved in food choice and body image perception, both relevant in AN. However, little is known about the neurobiology of AN, and the lack of effective treatments justifies the use of animal models. Glial cells, the dominant population of nerve cells in the central nervous system, are key in maintaining brain homeostasis. Accordingly, recent studies suggest that glial function may be compromised by anorexia. In this review, we summarize recent findings about anorexia and glial cells.
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18
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Qian S, Yan S, Pang R, Zhang J, Liu K, Shi Z, Wang Z, Chen P, Zhang Y, Luo T, Hu X, Xiong Y, Zhou Y. A temperature-regulated circuit for feeding behavior. Nat Commun 2022; 13:4229. [PMID: 35869064 PMCID: PMC9307622 DOI: 10.1038/s41467-022-31917-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 07/08/2022] [Indexed: 11/08/2022] Open
Abstract
Both rodents and primates have evolved to orchestrate food intake to maintain thermal homeostasis in coping with ambient temperature challenges. However, the mechanisms underlying temperature-coordinated feeding behavior are rarely reported. Here we find that a non-canonical feeding center, the anteroventral and periventricular portions of medial preoptic area (apMPOA) respond to altered dietary states in mice. Two neighboring but distinct neuronal populations in apMPOA mediate feeding behavior by receiving anatomical inputs from external and dorsal subnuclei of lateral parabrachial nucleus. While both populations are glutamatergic, the arcuate nucleus-projecting neurons in apMPOA can sense low temperature and promote food intake. The other type, the paraventricular hypothalamic nucleus (PVH)-projecting neurons in apMPOA are primarily sensitive to high temperature and suppress food intake. Caspase ablation or chemogenetic inhibition of the apMPOA→PVH pathway can eliminate the temperature dependence of feeding. Further projection-specific RNA sequencing and fluorescence in situ hybridization identify that the two neuronal populations are molecularly marked by galanin receptor and apelin receptor. These findings reveal unrecognized cell populations and circuits of apMPOA that orchestrates feeding behavior against thermal challenges.
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Affiliation(s)
- Shaowen Qian
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China.
- Department of Medical Imaging, The 960th Hospital of Joint Logistics Support Force of PLA (Former Jinan Military General Hospital), Jinan, Shandong, China.
| | - Sumei Yan
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Ruiqi Pang
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
- Advanced Institute for Brain and Intelligence, School of Medicine, Guangxi University, Nanning, Guangxi, China
| | - Jing Zhang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China
| | - Kai Liu
- Department of Medical Imaging, The 960th Hospital of Joint Logistics Support Force of PLA (Former Jinan Military General Hospital), Jinan, Shandong, China
| | - Zhiyue Shi
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Zhaoqun Wang
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Penghui Chen
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Yanjie Zhang
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Tiantian Luo
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Xianli Hu
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China
| | - Ying Xiong
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China.
| | - Yi Zhou
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, School of Basic Medicine, Army Medical University, Chongqing, China.
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19
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Azevedo EP, Ivan VJ, Friedman JM, Stern SA. Higher-Order Inputs Involved in Appetite Control. Biol Psychiatry 2022; 91:869-878. [PMID: 34593204 PMCID: PMC9704062 DOI: 10.1016/j.biopsych.2021.07.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/15/2021] [Accepted: 07/17/2021] [Indexed: 01/01/2023]
Abstract
The understanding of the neural control of appetite sheds light on the pathogenesis of eating disorders such as anorexia nervosa and obesity. Both diseases are a result of maladaptive eating behaviors (overeating or undereating) and are associated with life-threatening health problems. The fine regulation of appetite involves genetic, physiological, and environmental factors, which are detected and integrated in the brain by specific neuronal populations. For centuries, the hypothalamus has been the center of attention in the scientific community as a key regulator of appetite. The hypothalamus receives and sends axonal projections to several other brain regions that are important for the integration of sensory and emotional information. These connections ensure that appropriate behavioral decisions are made depending on the individual's emotional state and environment. Thus, the mechanisms by which higher-order brain regions integrate exteroceptive information to coordinate feeding is of great importance. In this review, we will focus on the functional and anatomical projections connecting the hypothalamus to the limbic system and higher-order brain centers in the cortex. We will also address the mechanisms by which specific neuronal populations located in higher-order centers regulate appetite and how maladaptive eating behaviors might arise from altered connections among cortical and subcortical areas with the hypothalamus.
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Affiliation(s)
- Estefania P Azevedo
- Laboratory of Molecular Genetics, The Rockefeller University, New York, New York.
| | - Violet J Ivan
- Laboratory of Molecular Genetics, The Rockefeller University, New York, New York
| | - Jeffrey M Friedman
- Laboratory of Molecular Genetics, The Rockefeller University, New York, New York; Howard Hughes Medical Institute, New York, New York
| | - Sarah A Stern
- Integrative Neural Circuits and Behavior Research Group, Max Planck Florida Institute for Neuroscience, Jupiter, Florida.
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20
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Cai X, Liu H, Feng B, Yu M, He Y, Liu H, Liang C, Yang Y, Tu L, Zhang N, Wang L, Yin N, Han J, Yan Z, Wang C, Xu P, Wu Q, Tong Q, He Y, Xu Y. A D2 to D1 shift in dopaminergic inputs to midbrain 5-HT neurons causes anorexia in mice. Nat Neurosci 2022; 25:646-658. [PMID: 35501380 PMCID: PMC9926508 DOI: 10.1038/s41593-022-01062-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 03/24/2022] [Indexed: 12/18/2022]
Abstract
Midbrain dopamine (DA) and serotonin (5-HT) neurons regulate motivated behaviors, including feeding, but less is known about how these circuits may interact. In this study, we found that DA neurons in the mouse ventral tegmental area bidirectionally regulate the activity of 5-HT neurons in the dorsal raphe nucleus (DRN), with weaker stimulation causing DRD2-dependent inhibition and overeating, while stronger stimulation causing DRD1-dependent activation and anorexia. Furthermore, in the activity-based anorexia (ABA) paradigm, which is a mouse model mimicking some clinical features of human anorexia nervosa (AN), we observed a DRD2 to DRD1 shift of DA neurotransmission on 5-HTDRN neurons, which causes constant activation of these neurons and contributes to AN-like behaviors. Finally, we found that systemic administration of a DRD1 antagonist can prevent anorexia and weight loss in ABA. Our results revealed regulation of feeding behavior by stimulation strength-dependent interactions between DA and 5-HT neurons, which may contribute to the pathophysiology of AN.
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Affiliation(s)
- Xing Cai
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,Present address: Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,These authors contributed equally: Xing Cai, Hailan Liu
| | - Hailan Liu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,These authors contributed equally: Xing Cai, Hailan Liu
| | - Bing Feng
- Brain Glycemic and Metabolism Control Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Meng Yu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Yang He
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Hesong Liu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Chen Liang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Yongjie Yang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Longlong Tu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Nan Zhang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Lina Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Na Yin
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Junying Han
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Zili Yan
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Chunmei Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Pingwen Xu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,Present address: Division of Endocrinology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Qi Wu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Qingchun Tong
- Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yanlin He
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA. .,Brain Glycemic and Metabolism Control Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA.
| | - Yong Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA. .,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.
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21
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Rasmussen JM, Thompson PM, Entringer S, Buss C, Wadhwa PD. Fetal programming of human energy homeostasis brain networks: Issues and considerations. Obes Rev 2022; 23:e13392. [PMID: 34845821 DOI: 10.1111/obr.13392] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/29/2021] [Accepted: 10/24/2021] [Indexed: 02/07/2023]
Abstract
In this paper, we present a transdisciplinary framework and testable hypotheses regarding the process of fetal programming of energy homeostasis brain circuitry. Our model proposes that key aspects of energy homeostasis brain circuitry already are functional by the time of birth (with substantial interindividual variation); that this phenotypic variation at birth is an important determinant of subsequent susceptibility for energy imbalance and childhood obesity risk; and that this brain circuitry exhibits developmental plasticity, in that it is influenced by conditions during intrauterine life, particularly maternal-placental-fetal endocrine, immune/inflammatory, and metabolic processes and their upstream determinants. We review evidence that supports the scientific premise for each element of this formulation, identify future research directions, particularly recent advances that may facilitate a better quantification of the ontogeny of energy homeostasis brain networks, highlight animal and in vitro-based approaches that may better address the determinants of interindividual variation in energy homeostasis brain networks, and discuss the implications of this formulation for the development of strategies targeted towards the primary prevention of childhood obesity.
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Affiliation(s)
- Jerod M Rasmussen
- Development, Health and Disease Research Program, University of California, Irvine, California, USA.,Department of Pediatrics, University of California, Irvine, California, USA
| | - Paul M Thompson
- Imaging Genetics Center, Mark and Mary Stevens Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Sonja Entringer
- Development, Health and Disease Research Program, University of California, Irvine, California, USA.,Department of Pediatrics, University of California, Irvine, California, USA.,Department of Medical Psychology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Departments of Psychiatry and Human Behavior, Obstetrics and Gynecology, Epidemiology, University of California, Irvine, California, USA
| | - Claudia Buss
- Development, Health and Disease Research Program, University of California, Irvine, California, USA.,Department of Pediatrics, University of California, Irvine, California, USA.,Department of Medical Psychology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Departments of Psychiatry and Human Behavior, Obstetrics and Gynecology, Epidemiology, University of California, Irvine, California, USA
| | - Pathik D Wadhwa
- Development, Health and Disease Research Program, University of California, Irvine, California, USA.,Department of Pediatrics, University of California, Irvine, California, USA.,Departments of Psychiatry and Human Behavior, Obstetrics and Gynecology, Epidemiology, University of California, Irvine, California, USA.,Department of Obstetrics and Gynecology, University of California, Irvine, California, USA.,Department of Epidemiology, University of California, Irvine, California, USA
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22
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Krashia P, Spoleti E, D'Amelio M. The VTA dopaminergic system as diagnostic and therapeutical target for Alzheimer's disease. Front Psychiatry 2022; 13:1039725. [PMID: 36325523 PMCID: PMC9618946 DOI: 10.3389/fpsyt.2022.1039725] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 09/28/2022] [Indexed: 11/17/2022] Open
Abstract
Neuropsychiatric symptoms (NPS) occur in nearly all patients with Alzheimer's Disease (AD). Most frequently they appear since the mild cognitive impairment (MCI) stage preceding clinical AD, and have a prognostic importance. Unfortunately, these symptoms also worsen the daily functioning of patients, increase caregiver stress and accelerate the disease progression from MCI to AD. Apathy and depression are the most common of these NPS, and much attention has been given in recent years to understand the biological mechanisms related to their appearance in AD. Although for many decades these symptoms have been known to be related to abnormalities of the dopaminergic ventral tegmental area (VTA), a direct association between deficits in the VTA and NPS in AD has never been investigated. Fortunately, this scenario is changing since recent studies using preclinical models of AD, and clinical studies in MCI and AD patients demonstrated a number of functional, structural and metabolic alterations affecting the VTA dopaminergic neurons and their mesocorticolimbic targets. These findings appear early, since the MCI stage, and seem to correlate with the appearance of NPS. Here, we provide an overview of the recent evidence directly linking the dopaminergic VTA with NPS in AD and propose a setting in which the precocious identification of dopaminergic deficits can be a helpful biomarker for early diagnosis. In this scenario, treatments of patients with dopaminergic drugs might slow down the disease progression and delay the impairment of daily living activities.
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Affiliation(s)
- Paraskevi Krashia
- Department of Experimental Neurosciences, IRCCS Santa Lucia Foundation, Rome, Italy.,Department of Science and Technology for Humans and the Environment, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Elena Spoleti
- Department of Science and Technology for Humans and the Environment, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Marcello D'Amelio
- Department of Experimental Neurosciences, IRCCS Santa Lucia Foundation, Rome, Italy.,Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
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23
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Milton LK, Mirabella PN, Greaves E, Spanswick DC, van den Buuse M, Oldfield BJ, Foldi CJ. Suppression of Corticostriatal Circuit Activity Improves Cognitive Flexibility and Prevents Body Weight Loss in Activity-Based Anorexia in Rats. Biol Psychiatry 2021; 90:819-828. [PMID: 32892984 DOI: 10.1016/j.biopsych.2020.06.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/29/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND The ability to adapt behavior to changing environmental circumstances, or cognitive flexibility, is impaired in multiple psychiatric conditions, including anorexia nervosa (AN). Exaggerated prefrontal cortical activity likely underpins the inflexible thinking and rigid behaviors exhibited by patients with AN. A better understanding of the neural basis of cognitive flexibility is necessary to enable treatment approaches that may target impaired executive control. METHODS Utilizing the activity-based anorexia (ABA) model and touchscreen operant learning paradigms, we investigated the neurobiological link between pathological weight loss and cognitive flexibility. We used pathway-specific chemogenetics to selectively modulate activity in neurons of the medial prefrontal cortex (mPFC) projecting to the nucleus accumbens shell (AcbSh) in female Sprague Dawley rats. RESULTS DREADD (designer receptor exclusively activated by designer drugs)-based inhibition of the mPFC-AcbSh pathway prevented weight loss in ABA and improved flexibility during early reversal learning by reducing perseverative responding. Modulation of activity within the mPFC-AcbSh pathway had no effect on running, locomotor activity, or feeding under ad libitum conditions, indicating the specific involvement of this circuit in conditions of dysregulated reward. CONCLUSIONS Parallel attenuation of weight loss in ABA and improvement of cognitive flexibility following suppression of mPFC-AcbSh activity align with the relationship between disrupted prefrontal function and cognitive rigidity in AN patients. The identification of a neurobiological correlate between cognitive flexibility and pathological weight loss provides a unique insight into the executive control of feeding behavior. It also highlights the utility of the ABA model for understanding the biological bases of cognitive deficits in AN and provides context for new treatment strategies.
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Affiliation(s)
- Laura K Milton
- Department of Physiology, Monash University, Clayton, Victoria, Australia; Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Paul N Mirabella
- Department of Physiology, Monash University, Clayton, Victoria, Australia; Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Erika Greaves
- Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - David C Spanswick
- Department of Physiology, Monash University, Clayton, Victoria, Australia; Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Maarten van den Buuse
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, Australia
| | - Brian J Oldfield
- Department of Physiology, Monash University, Clayton, Victoria, Australia; Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Claire J Foldi
- Department of Physiology, Monash University, Clayton, Victoria, Australia; Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.
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24
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Miyazaki S, Omiya Y, Mizoguchi K. Ninjin'yoeito, a traditional Japanese medicine, increases dopamine content in PC12 cells. Biosci Biotechnol Biochem 2021; 85:2274-2280. [PMID: 34529031 DOI: 10.1093/bbb/zbab162] [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: 07/31/2021] [Accepted: 09/08/2021] [Indexed: 11/14/2022]
Abstract
Dementia is exacerbated by loss of appetite and amotivation, and recent studies have indicated that ninjin'yoeito improves anorexia and amotivation. Previous studies suggest that ninjin'yoeito inhibits dopamine-metabolizing enzymes and enhances dopamine signaling. However, whether ninjin'yoeito increases dopamine content in living cells remains unclear. Here, PC12 cells were used to examine whether ninjin'yoeito affects the dopamine metabolic pathway. Dopamine content significantly increased 3 h after treatment ninjin'yoeito extract. Concomitantly, the levels of 3-methoxytyramine and 3,4-dihydroxyphenylacetic acid were significantly reduced. The effects of components of ninjin'yoeito on the dopamine metabolic pathway were also assessed. Treatment with onjisaponin B, nobiletin, and schisandrin, and the ingredients of Polygalae Radix, Citri Unshiu Pericarpium, and Schisandrae Fructus increased dopamine content and decreased its metabolite content in the culture media. Our findings suggest that ninjin'yoeito improves anorexia and amotivation by inhibiting metabolic enzyme and increasing the dopamine content in cells.
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Affiliation(s)
- Shinji Miyazaki
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
| | - Yuji Omiya
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ibaraki, Japan
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25
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Castillo Díaz F, Caffino L, Fumagalli F. Bidirectional role of dopamine in learning and memory-active forgetting. Neurosci Biobehav Rev 2021; 131:953-963. [PMID: 34655655 DOI: 10.1016/j.neubiorev.2021.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/05/2021] [Accepted: 10/11/2021] [Indexed: 12/15/2022]
Abstract
Dopaminergic neurons projecting from the Substantia Nigra to the Striatum play a critical role in motor functions while dopaminergic neurons originating in the Ventral Tegmental Area (VTA) and projecting to the Nucleus Accumbens, Hippocampus and other cortical structures regulate rewarding learning. While VTA mainly consists of dopaminergic neurons, excitatory (glutamate) and inhibitory (GABA) VTA-neurons have also been described: these neurons may also modulate and contribute to shape the final dopaminergic response, which is critical for memory formation. However, given the large amount of information that is handled daily by our brain, it is essential that irrelevant information be deleted. Recently, apart from the well-established role of dopamine (DA) in learning, it has been shown that DA plays a critical role in the intrinsic active forgetting mechanisms that control storage information, contributing to the deletion of a consolidated memory. These new insights may be instrumental to identify therapies for those disorders that involve memory alterations.
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Affiliation(s)
- Fernando Castillo Díaz
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy.
| | - Lucia Caffino
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
| | - Fabio Fumagalli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy
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26
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Pothula S, Kato T, Liu RJ, Wu M, Gerhard D, Shinohara R, Sliby AN, Chowdhury GMI, Behar KL, Sanacora G, Banerjee P, Duman RS. Cell-type specific modulation of NMDA receptors triggers antidepressant actions. Mol Psychiatry 2021; 26:5097-5111. [PMID: 32488125 DOI: 10.1038/s41380-020-0796-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/13/2020] [Accepted: 05/18/2020] [Indexed: 12/26/2022]
Abstract
Both the NMDA receptor (NMDAR) positive allosteric modulator (PAM), and antagonist, can exert rapid antidepressant effects as shown in several animal and human studies. However, how this bidirectional modulation of NMDARs causes similar antidepressant effects remains unknown. Notably, the initial cellular trigger, specific cell-type(s), and subunit(s) of NMDARs mediating the antidepressant-like effects of a PAM or an antagonist have not been identified. Here, we used electrophysiology, microdialysis, and NMR spectroscopy to evaluate the effect of a NMDAR PAM (rapastinel) or NMDAR antagonist, ketamine on NMDAR function and disinhibition-mediated glutamate release. Further, we used cell-type specific knockdown (KD), pharmacological, and behavioral approaches to dissect the cell-type specific role of GluN2B, GluN2A, and dopamine receptor subunits in the actions of NMDAR PAM vs. antagonists. We demonstrate that rapastinel directly enhances NMDAR activity on principal glutamatergic neurons in medial prefrontal cortex (mPFC) without any effect on glutamate efflux, while ketamine blocks NMDAR on GABA interneurons to cause glutamate efflux and indirect activation of excitatory synapses. Behavioral studies using cell-type-specific KD in mPFC demonstrate that NMDAR-GluN2B KD on Camk2a- but not Gad1-expressing neurons blocks the antidepressant effects of rapastinel. In contrast, GluN2B KD on Gad1- but not Camk2a-expressing neurons blocks the actions of ketamine. The results also demonstrate that Drd1-expressing pyramidal neurons in mPFC mediate the rapid antidepressant actions of ketamine and rapastinel. Together, these results demonstrate unique initial cellular triggers as well as converging effects on Drd1-pyramidal cell signaling that underlie the antidepressant actions of NMDAR-positive modulation vs. NMDAR blockade.
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Affiliation(s)
- Santosh Pothula
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA.
| | - Taro Kato
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Rong-Jian Liu
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Min Wu
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Danielle Gerhard
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA.,Department of Psychiatry, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Ryota Shinohara
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Alexa-Nicole Sliby
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Golam M I Chowdhury
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Kevin L Behar
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | - Gerard Sanacora
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
| | | | - Ronald S Duman
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06511, USA
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27
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Lee DK, Li SW, Bounni F, Friedman G, Jamali M, Strahs L, Zelinger O, Gabrieli P, Stankovich MA, Demaree J, Williams ZM. Reduced sociability and social agency encoding in adult Shank3-mutant mice are restored through gene re-expression in real time. Nat Neurosci 2021; 24:1243-1255. [PMID: 34253921 PMCID: PMC8410666 DOI: 10.1038/s41593-021-00888-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 06/07/2021] [Indexed: 02/06/2023]
Abstract
Despite a growing understanding of the molecular and developmental basis of autism spectrum disorder (ASD), how the neuronal encoding of social information is disrupted in ASD and whether it contributes to abnormal social behavior remains unclear. Here, we disrupted and then restored expression of the ASD-associated gene Shank3 in adult male mice while tracking the encoding dynamics of neurons in the medial prefrontal cortex (mPFC) over weeks. We find that Shank3 disruption led to a reduction of neurons encoding the experience of other mice and an increase in neurons encoding the animal's own experience. This shift was associated with a loss of ability by neurons to distinguish other from self and, therefore, the inability to encode social agency. Restoration of Shank3 expression in the mPFC reversed this encoding imbalance and increased sociability over 5-8 weeks. These findings reveal a neuronal-encoding process that is necessary for social behavior and that may be disrupted in ASD.
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Affiliation(s)
- Daniel K Lee
- Harvard-MIT Division of Health Sciences and Technology, Boston MA,Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA
| | - S William Li
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA,Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston MA
| | - Firas Bounni
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA
| | - Gabriel Friedman
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA
| | - Mohsen Jamali
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA
| | | | | | | | - Michael A Stankovich
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA
| | | | - Ziv M Williams
- Harvard-MIT Division of Health Sciences and Technology, Boston MA,Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston MA,Harvard Medical School, Program in Neuroscience, Boston MA,Correspondence should be made to -
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28
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McCool BA. Ethanol modulation of cortico-basolateral amygdala circuits: Neurophysiology and behavior. Neuropharmacology 2021; 197:108750. [PMID: 34371080 DOI: 10.1016/j.neuropharm.2021.108750] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/22/2021] [Accepted: 08/05/2021] [Indexed: 12/19/2022]
Abstract
This review highlights literature relating the anatomy, physiology, and behavioral contributions by projections between rodent prefrontal cortical areas and the basolateral amygdala. These projections are robustly modulated by both environmental experience and exposure to drugs of abuse including ethanol. Recent literature relating optogenetic and chemogenetic dissection of these circuits within behavior both compliments and occasionally challenges roles defined by more traditional pharmacological or lesion-based approaches. In particular, cortico-amygdala circuits help control both aversive and reward-seeking. Exposure to pathology-producing environments or abused drugs dysregulates the relative 'balance' of these outcomes. Modern circuit-based approaches have also shown that overlapping populations of neurons within a given brain region frequently govern both aversion and reward-seeking. In addition, these circuits often dramatically influence 'local' cortical or basolateral amygdala excitatory or inhibitory circuits. Our understanding of these neurobiological processes, particularly in relation to ethanol research, has just begun and represents a significant opportunity.
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Affiliation(s)
- Brian A McCool
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
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29
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Eiselt AK, Chen S, Chen J, Arnold J, Kim T, Pachitariu M, Sternson SM. Hunger or thirst state uncertainty is resolved by outcome evaluation in medial prefrontal cortex to guide decision-making. Nat Neurosci 2021; 24:907-912. [PMID: 33972802 PMCID: PMC8254795 DOI: 10.1038/s41593-021-00850-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 03/26/2021] [Indexed: 12/23/2022]
Abstract
Physiological need states direct decision-making toward re-establishing homeostasis. Using a two-alternative forced choice task for mice that models elements of human decisions, we found that varying hunger and thirst states caused need-inappropriate choices, such as food seeking when thirsty. These results show limits on interoceptive knowledge of hunger and thirst states to guide decision-making. Instead, need states were identified after food and water consumption by outcome evaluation, which depended on the medial prefrontal cortex.
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Affiliation(s)
- Anne-Kathrin Eiselt
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Susu Chen
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Jim Chen
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Jon Arnold
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Tahnbee Kim
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Marius Pachitariu
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA
| | - Scott M. Sternson
- Janelia Research Campus, Howard Hughes Medical Institute 19700 Helix Dr. Ashburn, VA 20147, USA.,Correspondence to: (S.M.S.)
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30
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Abstract
The gut microbiota has the capacity to affect host appetite via intestinal satiety pathways, as well as complex feeding behaviors. In this Review, we highlight recent evidence that the gut microbiota can modulate food preference across model organisms. We discuss effects of the gut microbiota on the vagus nerve and brain regions including the hypothalamus, mesolimbic system, and prefrontal cortex, which play key roles in regulating feeding behavior. Crosstalk between commensal bacteria and the central and peripheral nervous systems is associated with alterations in signaling of neurotransmitters and neuropeptides such as dopamine, brain-derived neurotrophic factor (BDNF), and glucagon-like peptide-1 (GLP-1). We further consider areas for future research on mechanisms by which gut microbes may influence feeding behavior involving these neural pathways. Understanding roles for the gut microbiota in feeding regulation will be important for informing therapeutic strategies to treat metabolic and eating disorders.
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31
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Transcriptional signatures in prefrontal cortex confer vulnerability versus resilience to food and cocaine addiction-like behavior. Sci Rep 2021; 11:9076. [PMID: 33907201 PMCID: PMC8079697 DOI: 10.1038/s41598-021-88363-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/26/2021] [Indexed: 11/12/2022] Open
Abstract
Addiction is a chronic relapsing brain disease characterized by compulsive reward-seeking despite harmful consequences. The mechanisms underlying addiction are orchestrated by transcriptional reprogramming in the reward system of vulnerable subjects. This study aims at revealing gene expression alterations across different types of addiction. We analyzed publicly available transcriptome datasets of the prefrontal cortex (PFC) from a palatable food and a cocaine addiction study. We found 56 common genes upregulated in the PFC of addicted mice in these two studies, whereas most of the differentially expressed genes were exclusively linked to either palatable food or cocaine addiction. Gene ontology analysis of shared genes revealed that these genes contribute to learning and memory, dopaminergic synaptic transmission, and histone phosphorylation. Network analysis of shared genes revealed a protein–protein interaction node among the G protein-coupled receptors (Drd2, Drd1, Adora2a, Gpr6, Gpr88) and downstream targets of the cAMP signaling pathway (Ppp1rb1, Rgs9, Pde10a) as a core network in addiction. Upon extending the analysis to a cell-type specific level, some of these common molecular players were selectively expressed in excitatory neurons, oligodendrocytes, and endothelial cells. Overall, computational analysis of publicly available whole transcriptome datasets provides new insights into the molecular basis of addiction-like behaviors in PFC.
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32
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Christoffel DJ, Walsh JJ, Heifets BD, Hoerbelt P, Neuner S, Sun G, Ravikumar VK, Wu H, Halpern CH, Malenka RC. Input-specific modulation of murine nucleus accumbens differentially regulates hedonic feeding. Nat Commun 2021; 12:2135. [PMID: 33837200 PMCID: PMC8035198 DOI: 10.1038/s41467-021-22430-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/05/2021] [Indexed: 02/08/2023] Open
Abstract
Hedonic feeding is driven by the "pleasure" derived from consuming palatable food and occurs in the absence of metabolic need. It plays a critical role in the excessive feeding that underlies obesity. Compared to other pathological motivated behaviors, little is known about the neural circuit mechanisms mediating excessive hedonic feeding. Here, we show that modulation of prefrontal cortex (PFC) and anterior paraventricular thalamus (aPVT) excitatory inputs to the nucleus accumbens (NAc), a key node of reward circuitry, has opposing effects on high fat intake in mice. Prolonged high fat intake leads to input- and cell type-specific changes in synaptic strength. Modifying synaptic strength via plasticity protocols, either in an input-specific optogenetic or non-specific electrical manner, causes sustained changes in high fat intake. These results demonstrate that input-specific NAc circuit adaptations occur with repeated exposure to a potent natural reward and suggest that neuromodulatory interventions may be therapeutically useful for individuals with pathologic hedonic feeding.
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Affiliation(s)
- Daniel J Christoffel
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Jessica J Walsh
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Boris D Heifets
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Paul Hoerbelt
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Sophie Neuner
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Gordon Sun
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Vinod K Ravikumar
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Hemmings Wu
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Casey H Halpern
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Robert C Malenka
- Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA.
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33
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Turner BD, Smith NK, Manz KM, Chang BT, Delpire E, Grueter CA, Grueter BA. Cannabinoid type 1 receptors in A2a neurons contribute to cocaine-environment association. Psychopharmacology (Berl) 2021; 238:1121-1131. [PMID: 33454843 PMCID: PMC8386588 DOI: 10.1007/s00213-021-05759-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 01/06/2021] [Indexed: 12/14/2022]
Abstract
RATIONALE Cannabinoid type 1 receptors (CB1Rs) are widely expressed within the brain's reward circuits and are implicated in regulating drug induced behavioral adaptations. Understanding how CB1R signaling in discrete circuits and cell types contributes to drug-related behavior provides further insight into the pathology of substance use disorders. OBJECTIVE AND METHODS We sought to determine how cell type-specific expression of CB1Rs within striatal circuits contributes to cocaine-induced behavioral plasticity, hypothesizing that CB1R function in distinct striatal neuron populations would differentially impact behavioral outcomes. We crossed conditional Cnr1fl/fl mice and striatal output pathway cre lines (Drd1a -cre; D1, Adora2a -cre; A2a) to generate cell type-specific CB1R knockout mice and assessed their performance in cocaine locomotor and associative behavioral assays. RESULTS Both knockout lines retained typical locomotor activity at baseline. D1-Cre x Cnr1fl/fl mice did not display hyperlocomotion in response to acute cocaine dosing, and both knockout lines exhibited blunted locomotor activity across repeated cocaine doses. A2a-cre Cnr1fl/fl, mice did not express a preference for cocaine paired environments in a two-choice place preference task. CONCLUSIONS This study aids in mapping CB1R-dependent cocaine-induced behavioral adaptations onto distinct striatal neuron subtypes. A reduction of cocaine-induced locomotor activation in the D1- and A2a-Cnr1 knockout mice supports a role for CB1R function in the motor circuit. Furthermore, a lack of preference for cocaine-associated context in A2a-Cnr1 mice suggests that CB1Rs on A2a-neuron inhibitory terminals are necessary for either reward perception, memory consolidation, or recall. These results direct future investigations into CB1R-dependent adaptations underlying the development and persistence of substance use disorders.
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MESH Headings
- Animals
- Cocaine-Related Disorders/psychology
- Conditioning, Operant/drug effects
- Corpus Striatum/drug effects
- Environment
- Male
- Mice
- Mice, Knockout
- Motor Activity/drug effects
- Neurons/drug effects
- Receptor, Adenosine A2A/drug effects
- Receptor, Adenosine A2A/genetics
- Receptor, Cannabinoid, CB1/drug effects
- Receptor, Cannabinoid, CB1/genetics
- Receptor, Cannabinoid, CB1/metabolism
- Reward
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Affiliation(s)
- Brandon D Turner
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
| | - Nicholas K Smith
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
| | - Kevin M Manz
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
- Medical Scientist Training Program, Vanderbilt University, Nashville, TN, 37232, USA
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Betty T Chang
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
| | - Eric Delpire
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Carrie A Grueter
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Brad A Grueter
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, 37232, USA.
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Vanderbilt Center for Addiction Research, Vanderbilt University, Nashville, TN, 37232, USA.
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA.
- Anesthesiology Research Division, Vanderbilt University School of Medicine, 2213 Garland Avenue, P435H MRB IV, Nashville, TN, 37232-0413, USA.
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Xing B, Mack NR, Guo KM, Zhang YX, Ramirez B, Yang SS, Lin L, Wang DV, Li YC, Gao WJ. A Subpopulation of Prefrontal Cortical Neurons Is Required for Social Memory. Biol Psychiatry 2021; 89:521-531. [PMID: 33190846 PMCID: PMC7867585 DOI: 10.1016/j.biopsych.2020.08.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 08/12/2020] [Accepted: 08/24/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND The medial prefrontal cortex (mPFC) is essential for social behaviors, yet whether and how it encodes social memory remains unclear. METHODS We combined whole-cell patch recording, morphological analysis, optogenetic/chemogenetic manipulation, and the TRAP (targeted recombination in active populations) transgenic mouse tool to study the social-associated neural populations in the mPFC. RESULTS Fos-TRAPed prefrontal social-associated neurons are excitatory pyramidal neurons with relatively small soma sizes and thin-tufted apical dendrite. These cells exhibit intrinsic firing features of dopamine D1 receptor-like neurons, show persisting firing pattern after social investigation, and project dense axons to nucleus accumbens. In behaving TRAP mice, selective inhibition of prefrontal social-associated neurons does not affect social investigation but does impair subsequent social recognition, whereas optogenetic reactivation of their projections to the nucleus accumbens enables recall of a previously encountered but "forgotten" mouse. Moreover, chemogenetic activation of mPFC-to-nucleus accumbens projections ameliorates MK-801-induced social memory impairments. CONCLUSIONS Our results characterize the electrophysiological and morphological features of social-associated neurons in the mPFC and indicate that these Fos-labeled, social-activated prefrontal neurons are necessary and sufficient for social memory.
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Affiliation(s)
- Bo Xing
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Nancy R. Mack
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Kai-Ming Guo
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China,Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Yu-Xiang Zhang
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Billy Ramirez
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Sha-Sha Yang
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Li Lin
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.
| | - Dong V. Wang
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Yan-Chun Li
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Wen-Jun Gao
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, Pennsylvania.
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35
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Smith NK, Grueter BA. Hunger-driven adaptive prioritization of behavior. FEBS J 2021; 289:922-936. [PMID: 33630426 DOI: 10.1111/febs.15791] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/11/2021] [Accepted: 02/24/2021] [Indexed: 12/19/2022]
Abstract
In order to survive, an animal must adapt its behavioral priorities to accommodate changing internal and external conditions. Hunger, a universally recognized interoceptive signal, promotes food intake though increasingly well-understood neural circuits. Less understood, is how hunger is integrated into the neural computations that guide nonfeeding behaviors. Within the brain, agouti-related peptide neurons in the arcuate nucleus of the hypothalamus have been found to powerfully stimulate feeding in addition to mediating other hunger-driven behavioral phenotypes. In this review, we compile the behavioral plasticity downstream of hunger and present identified or potential molecular and neural circuit mechanisms. We catalogue hunger's ability to increase exploration, decrease anxiety, and alter social behavior, among other phenotypes. Finally, we suggest paths forward for understanding hunger-driven behavioral adaptation and discuss the benefits of understanding state-dependent modulation of neural circuits controlling behavior.
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Affiliation(s)
- Nicholas K Smith
- Neuroscience Graduate Program, Vanderbilt University, Nashville, TN, USA
| | - Brad A Grueter
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA.,Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Center for Addiction Research, Vanderbilt University, Nashville, TN, USA.,Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA.,Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
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36
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On the Role of Central Type-1 Cannabinoid Receptor Gene Regulation in Food Intake and Eating Behaviors. Int J Mol Sci 2021; 22:ijms22010398. [PMID: 33401515 PMCID: PMC7796374 DOI: 10.3390/ijms22010398] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022] Open
Abstract
Different neuromodulatory systems are involved in long-term energy balance and body weight and, among these, evidence shows that the endocannabinoid system, in particular the activation of type-1 cannabinoid receptor, plays a key role. We here review current literature focusing on the role of the gene encoding type-1 cannabinoid receptors in the CNS and on the modulation of its expression by food intake and specific eating behaviors. We point out the importance to further investigate how environmental cues might have a role in the development of obesity as well as eating disorders through the transcriptional regulation of this gene in order to prevent or to treat these pathologies.
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37
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Anastasiades PG, Boada C, Carter AG. Cell-Type-Specific D1 Dopamine Receptor Modulation of Projection Neurons and Interneurons in the Prefrontal Cortex. Cereb Cortex 2020; 29:3224-3242. [PMID: 30566584 DOI: 10.1093/cercor/bhy299] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 11/01/2018] [Accepted: 11/07/2018] [Indexed: 11/14/2022] Open
Abstract
Dopamine modulation in the prefrontal cortex (PFC) mediates diverse effects on neuronal physiology and function, but the expression of dopamine receptors at subpopulations of projection neurons and interneurons remains unresolved. Here, we examine D1 receptor expression and modulation at specific cell types and layers in the mouse prelimbic PFC. We first show that D1 receptors are enriched in pyramidal cells in both layers 5 and 6, and that these cells project to intratelencephalic targets including contralateral cortex, striatum, and claustrum rather than to extratelencephalic structures. We then find that D1 receptors are also present in interneurons and enriched in superficial layer VIP-positive (VIP+) interneurons that coexpresses calretinin but absent from parvalbumin-positive (PV+) and somatostatin-positive (SOM+) interneurons. Finally, we determine that D1 receptors strongly and selectively enhance action potential firing in only a subset of these corticocortical neurons and VIP+ interneurons. Our findings define several novel subpopulations of D1+ neurons, highlighting how modulation via D1 receptors can influence both excitatory and disinhibitory microcircuits in the PFC.
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Affiliation(s)
- Paul G Anastasiades
- Center for Neural Science, New York University, 4 Washington Place, New York, NY, USA
| | - Christina Boada
- Center for Neural Science, New York University, 4 Washington Place, New York, NY, USA
| | - Adam G Carter
- Center for Neural Science, New York University, 4 Washington Place, New York, NY, USA
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38
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Azevedo EP, Tan B, Pomeranz LE, Ivan V, Fetcho R, Schneeberger M, Doerig KR, Liston C, Friedman JM, Stern SA. A limbic circuit selectively links active escape to food suppression. eLife 2020; 9:58894. [PMID: 32894221 PMCID: PMC7476759 DOI: 10.7554/elife.58894] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/19/2020] [Indexed: 02/06/2023] Open
Abstract
Stress has pleiotropic physiologic effects, but the neural circuits linking stress to these responses are not well understood. Here, we describe a novel population of lateral septum neurons expressing neurotensin (LSNts) in mice that are selectively tuned to specific types of stress. LSNts neurons increase their activity during active escape, responding to stress when flight is a viable option, but not when associated with freezing or immobility. Chemogenetic activation of LSNts neurons decreases food intake and body weight, without altering locomotion and anxiety. LSNts neurons co-express several molecules including Glp1r (glucagon-like peptide one receptor) and manipulations of Glp1r signaling in the LS recapitulates the behavioral effects of LSNts activation. Activation of LSNts terminals in the lateral hypothalamus (LH) also decreases food intake. These results show that LSNts neurons are selectively tuned to active escape stress and can reduce food consumption via effects on hypothalamic pathways.
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Affiliation(s)
- Estefania P Azevedo
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Bowen Tan
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Lisa E Pomeranz
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Violet Ivan
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Robert Fetcho
- Department of Psychiatry, Weill Cornell Medical College-New York Presbyterian Hospital, New York, United States
| | - Marc Schneeberger
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Katherine R Doerig
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
| | - Conor Liston
- Department of Psychiatry, Weill Cornell Medical College-New York Presbyterian Hospital, New York, United States
| | - Jeffrey M Friedman
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States.,Howard Hughes Medical Institute, The Rockefeller University, New York, United States
| | - Sarah A Stern
- Laboratory of Molecular Genetics, The Rockefeller University, New York, United States
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39
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Fu JY, Yu XD, Zhu Y, Xie SZ, Tang MY, Yu B, Li XM. Whole-Brain Map of Long-Range Monosynaptic Inputs to Different Cell Types in the Amygdala of the Mouse. Neurosci Bull 2020; 36:1381-1394. [PMID: 32691225 PMCID: PMC7674542 DOI: 10.1007/s12264-020-00545-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/13/2020] [Indexed: 12/16/2022] Open
Abstract
The amygdala, which is involved in various behaviors and emotions, is reported to connect with the whole brain. However, the long-range inputs of distinct cell types have not yet been defined. Here, we used a retrograde trans-synaptic rabies virus to generate a whole-brain map of inputs to the main cell types in the mouse amygdala. We identified 37 individual regions that projected to neurons expressing vesicular glutamate transporter 2, 78 regions to parvalbumin-expressing neurons, 104 regions to neurons expressing protein kinase C-δ, and 89 regions to somatostatin-expressing neurons. The amygdala received massive projections from the isocortex and striatum. Several nuclei, such as the caudate-putamen and the CA1 field of the hippocampus, exhibited input preferences to different cell types in the amygdala. Notably, we identified several novel input areas, including the substantia innominata and zona incerta. These findings provide anatomical evidence to help understand the precise connections and diverse functions of the amygdala.
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Affiliation(s)
- Jia-Yu Fu
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xiao-Dan Yu
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yi Zhu
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Shi-Ze Xie
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Meng-Yu Tang
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Bin Yu
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xiao-Ming Li
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China. .,NHC and CAMS Key Laboratory of Medical Neurobiology, Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Joint Institute for Genetics and Genome Medicine between Zhejiang University and University of Toronto, Hangzhou, 310058, China.
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40
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Vega-Torres JD, Azadian M, Rios-Orsini RA, Reyes-Rivera AL, Ontiveros-Angel P, Figueroa JD. Adolescent Vulnerability to Heightened Emotional Reactivity and Anxiety After Brief Exposure to an Obesogenic Diet. Front Neurosci 2020; 14:562. [PMID: 32694970 PMCID: PMC7338851 DOI: 10.3389/fnins.2020.00562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/06/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Emerging evidence demonstrates that diet-induced obesity disrupts corticolimbic circuits underlying emotional regulation. Studies directed at understanding how obesity alters brain and behavior are easily confounded by a myriad of complications related to obesity. This study investigated the early neurobiological stress response triggered by an obesogenic diet. Furthermore, this study directly determined the combined impact of a short-term obesogenic diet and adolescence on critical behavioral and molecular substrates implicated in emotion regulation and stress. METHODS Adolescent (postnatal day 31) or adult (postnatal day 81) Lewis rats were fed for 1 week with an experimental Western-like high-saturated fat diet (WD, 41% kcal from fat) or a matched control diet (CD, 13% kcal from fat). We used the acoustic fear-potentiated startle (FPS) paradigm to determine the effects of the WD on cued fear conditioning and fear extinction. We used c-Fos mapping to determine the functional influence of the diet and stress on corticolimbic circuits. RESULTS We report that 1-week WD consumption was sufficient to induce fear extinction deficits in adolescent rats, but not in adult rats. We identify fear-induced alterations in corticolimbic neuronal activation and demonstrate increased prefrontal cortex CRHR1 messenger RNA (mRNA) levels in the rats that consumed the WD. CONCLUSION Our findings demonstrate that short-term consumption of an obesogenic diet during adolescence heightens behavioral and molecular vulnerabilities associated with risk for anxiety and stress-related disorders. Given that fear extinction promotes resilience and that fear extinction principles are the foundation of psychological treatments for posttraumatic stress disorder (PTSD), understanding how obesogenic environments interact with the adolescent period to affect the acquisition and expression of fear extinction memories is of tremendous clinical relevance.
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Affiliation(s)
- Julio D. Vega-Torres
- Physiology Division, Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Matine Azadian
- Stanford University School of Medicine, Stanford, CA, United States
| | | | | | - Perla Ontiveros-Angel
- Physiology Division, Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Johnny D. Figueroa
- Physiology Division, Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA, United States
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41
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Kim YC, Narayanan NS. Prefrontal D1 Dopamine-Receptor Neurons and Delta Resonance in Interval Timing. Cereb Cortex 2020; 29:2051-2060. [PMID: 29897417 DOI: 10.1093/cercor/bhy083] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 03/23/2018] [Indexed: 11/12/2022] Open
Abstract
Considerable evidence has shown that prefrontal neurons expressing D1-type dopamine receptors (D1DRs) are critical for working memory, flexibility, and timing. This line of work predicts that frontal neurons expressing D1DRs mediate cognitive processing. During timing tasks, one form this cognitive processing might take is time-dependent ramping activity-monotonic changes in firing rate over time. Thus, we hypothesized the prefrontal D1DR+ neurons would strongly exhibit time-dependent ramping during interval timing. We tested this idea using an interval-timing task in which we used optogenetics to tag D1DR+ neurons in the mouse medial frontal cortex (MFC). While 23% of MFC D1DR+ neurons exhibited ramping, this was significantly less than untagged MFC neurons. By contrast, MFC D1DR+ neurons had strong delta-frequency (1-4 Hz) coherence with other MFC ramping neurons. This coherence was phase-locked to cue onset and was strongest early in the interval. To test the significance of these interactions, we optogenetically stimulated MFC D1DR+ neurons early versus late in the interval. We found that 2-Hz stimulation early in the interval was particularly effective in rescuing timing-related behavioral performance deficits in dopamine-depleted animals. These findings provide insight into MFC networks and have relevance for disorders such as Parkinson's disease and schizophrenia.
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Affiliation(s)
- Young-Cho Kim
- Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Nandakumar S Narayanan
- Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.,Aging Mind and Brain Initiative, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
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42
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Nashawi H, Gustafson TJ, Mietlicki-Baase EG. Palatable food access impacts expression of amylin receptor components in the mesocorticolimbic system. Exp Physiol 2020; 105:1012-1024. [PMID: 32306457 DOI: 10.1113/ep088356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 04/14/2020] [Indexed: 12/11/2022]
Abstract
NEW FINDINGS What is the central question of this study? We tested whether intra-nucleus accumbens core amylin receptor (AmyR) activation suppresses feeding and evaluated whether intake of palatable food influences mesocorticolimbic AmyR expression. What is the main finding and its importance? Intra-nucleus accumbens core AmyR activation reduces food intake in some dietary conditions. We showed that all components of the AmyR are expressed in the prefrontal cortex and central nucleus of the amygdala and demonstrated that access to fat impacts AmyR expression in these and other mesocorticolimbic nuclei. These results suggest that the intake of palatable food might alter amylin signalling in the brain and shed further light onto potential sites of action for amylin. ABSTRACT Amylin is a pancreas- and brain-derived peptide that acts within the CNS to promote negative energy balance. However, our understanding of the CNS sites of action for amylin remains incomplete. Here, we investigate the effect of amylin receptor (AmyR) activation in the nucleus accumbens core (NAcC) on the intake of bland and palatable foods. Intra-NAcC injection of the AmyR agonist salmon calcitonin or amylin itself in male chow-fed rats had no effect on food intake, meal size or number of meals. However, in chow-fed rats with access to fat solution, although fat intake was not affected by intra-NAcC AmyR activation, subsequent chow intake was suppressed. Given that mesolimbic AmyR activation suppresses energy intake in rats with access to fat solution, we tested whether fat access changes AmyR expression in key mesocorticolimbic nuclei. Fat exposure did not affect NAcC AmyR expression, whereas in the accumbens shell, expression of receptor activity modifying protein (RAMP) 3 was significantly reduced in fat-consuming rats. We show that all components of AmyRs are expressed in the medial prefrontal cortex and central nucleus of the amygdala; fat access significantly reduced expression of calcitonin receptor-A in the central nucleus of the amygdala and RAMP2 in the medial prefrontal cortex. Taken together, these results indicate that intra-NAcC AmyR activation can suppress energy intake and, furthermore, suggest that AmyR signalling in a broader range of mesocorticolimbic sites might have a role in mediating the effects of amylin on food intake and body weight.
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Affiliation(s)
- Houda Nashawi
- Neuroscience Program, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - Tyler J Gustafson
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - Elizabeth G Mietlicki-Baase
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, State University of New York, Buffalo, NY, USA.,Center for Ingestive Behavior Research, University at Buffalo, State University of New York, Buffalo, NY, USA
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43
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Medial Nucleus Accumbens Projections to the Ventral Tegmental Area Control Food Consumption. J Neurosci 2020; 40:4727-4738. [PMID: 32354856 DOI: 10.1523/jneurosci.3054-18.2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 04/15/2020] [Accepted: 04/22/2020] [Indexed: 12/12/2022] Open
Abstract
Decades of research have shown that the NAc is a critical region influencing addiction, mood, and food consumption through its effects on reinforcement learning, motivation, and hedonic experience. Pharmacological studies have demonstrated that inhibition of the NAc shell induces voracious feeding, leading to the hypothesis that the inhibitory projections that emerge from the NAc normally act to restrict feeding. While much of this work has focused on projections to the lateral hypothalamus, the role of NAc projections to the VTA in the control food intake has been largely unexplored. Using a retrograde viral labeling technique and real-time monitoring of neural activity with fiber photometry, we find that medial NAc shell projections to the VTA (mNAc→VTA) are inhibited during food-seeking and food consumption in male mice. We also demonstrate that this circuit bidirectionally controls feeding: optogenetic activation of NAc projections to the VTA inhibits food-seeking and food intake (in both sexes), while optogenetic inhibition of this circuit potentiates food-seeking behavior. Additionally, we show that activity of the NAc to VTA pathway is necessary for adaptive inhibition of food intake in response to external cues. These data provide new insight into NAc control over feeding in mice, and contribute to an emerging literature elucidating the role of inhibitory midbrain feedback within the mesolimbic circuit.SIGNIFICANCE STATEMENT The medial NAc has long been known to control consummatory behavior, with particular focus on accumbens projections to the lateral hypothalamus. Conversely, NAc projections to the VTA have mainly been studied in the context of drug reward. We show that NAc projections to the VTA bidirectionally control food intake, consistent with a permissive role in feeding. Additionally, we show that this circuit is normally inactivated during consumption and food-seeking. Together, these findings elucidate how mesolimbic circuits control food consumption.
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Keefer SE, Petrovich GD. The basolateral amygdala-medial prefrontal cortex circuitry regulates behavioral flexibility during appetitive reversal learning. Behav Neurosci 2020; 134:34-44. [PMID: 31829643 PMCID: PMC6944768 DOI: 10.1037/bne0000349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Environmental cues can become predictors of food availability through Pavlovian conditioning. Two forebrain regions important in this associative learning are the basolateral amygdala (BLA) and medial prefrontal cortex (mPFC). Recent work showed the BLA-mPFC pathway is activated when a cue reliably signals food, suggesting the BLA informs the mPFC of the cue's value. The current study tested this hypothesis by altering the value of 2 food cues using reversal learning and illness-induced devaluation paradigms. Rats that received unilateral excitotoxic lesions of the BLA and mPFC contralaterally placed, along with ipsilateral and sham controls, underwent discriminative conditioning, followed by reversal learning and then devaluation. All groups successfully discriminated between 2 auditory stimuli that were followed by food delivery (conditional stimulus [CS] +) or not rewarded (CS-), demonstrating this learning does not require BLA-mPFC communication. When the outcomes of the stimuli were reversed, the rats with disconnected BLA-mPFC (contralateral condition) showed increased responding to the CSs, especially to the rCS + (original CS-) during the first session, suggesting impaired cue memory recall and behavioral inhibition compared to the other groups. For devaluation, all groups successfully learned conditioned taste aversion; however, there was no evidence of cue devaluation or differences between groups. Interestingly, at the end of testing, the nondevalued contralateral group was still responding more to the original CS + (rCS-) compared to the devalued contralateral group. These results suggest a potential role for BLA-mPFC communication in guiding appropriate responding during periods of behavioral flexibility when the outcomes, and thus the values, of learned cues are altered. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Sara E. Keefer
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn Street, Baltimore, MD 21201, USA
| | - Gorica D. Petrovich
- Department of Psychology, Boston College, 140 Commomwealth Avenue, Chestnut Hill, MA, 02467, USA
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Medial Prefrontal Cortex Neural Plasticity, Orexin Receptor 1 Signaling, and Connectivity with the Lateral Hypothalamus Are Necessary in Cue-Potentiated Feeding. J Neurosci 2020; 40:1744-1755. [PMID: 31953368 DOI: 10.1523/jneurosci.1803-19.2020] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 01/06/2020] [Accepted: 01/09/2020] [Indexed: 01/26/2023] Open
Abstract
Cognitive processes contribute to the control of feeding behavior and help organism's survival when they support physiological needs. They can become maladaptive, such as when learned food cues drive feeding in the absence of hunger. Associative learning is the basis for cue-driven food seeking and consumption, and behavioral paradigms with Pavlovian cue-food conditioning are well established. Yet, the neural mechanisms underlying circuit plasticity across cue-food learning, cue memory recall, and subsequent food motivation are unknown. Here, we demonstrated the medial prefrontal cortex (mPFC) is a site of learning-induced plasticity and signaling of the neuropeptide orexin within the mPFC mediates cue potentiated feeding (CPF). First, using a marker of neuronal activation, c-fos, we confirmed that the mPFC is activated during CPF. Next, to assess whether the same mPFC neuronal ensemble is activated during cue-food learning and later CPF, we used the Daun02 chemogenetic inactivation method in c-fos-lacZ transgenic male and female rats. Selective inactivation of the mPFC neurons that were active during the last cue-food training session abolished CPF during test, demonstrating that the mPFC is a site of plasticity. We postulated that integration of food cue memory and feeding motivation requires mPFC communications with lateral hypothalamus and showed that disconnection of that system abolished CPF. Then we showed that lateral hypothalamus orexin-producing neurons project to the mPFC. Finally, we blocked orexin receptor 1 signaling in the mPFC and showed that it is a neuromodulator necessary for the cue-driven consumption. Together, our findings identify a causal function for the mPFC in the cognitive motivation to eat.SIGNIFICANCE STATEMENT Obesity has reached epidemic proportions, and the associated health consequences are serious and costly. The causes of obesity are complex because, in addition to physiological energy and nutrient needs, environmental cues can drive feeding through hedonic and cognitive processes. Learned food cues from the environment can powerfully stimulate appetite and food consumption in the absence of hunger. Using an animal model for cue-potentiated feeding, the current study determined the mPFC neuronal plasticity and neuropeptide orexin signaling are critical circuit and neurotransmitter mechanisms involved in this form of cognitive motivation to eat. These findings identify key targets for potential treatment of excessive appetite and overeating.
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Dopamine Signaling in the Suprachiasmatic Nucleus Enables Weight Gain Associated with Hedonic Feeding. Curr Biol 2020; 30:196-208.e8. [PMID: 31902720 DOI: 10.1016/j.cub.2019.11.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 10/08/2019] [Accepted: 11/07/2019] [Indexed: 12/30/2022]
Abstract
The widespread availability of energy-dense, rewarding foods is correlated with the increased incidence of obesity across the globe. Overeating during mealtimes and unscheduled snacking disrupts timed metabolic processes, which further contribute to weight gain. The neuronal mechanism by which the consumption of energy-dense food restructures the timing of feeding is poorly understood. Here, we demonstrate that dopaminergic signaling within the suprachiasmatic nucleus (SCN), the central circadian pacemaker, disrupts the timing of feeding, resulting in overconsumption of food. D1 dopamine receptor (Drd1)-null mice are resistant to diet-induced obesity, metabolic disease, and circadian disruption associated with energy-dense diets. Conversely, genetic rescue of Drd1 expression within the SCN restores diet-induced overconsumption, weight gain, and obesogenic symptoms. Access to rewarding food increases SCN dopamine turnover, and elevated Drd1-signaling decreases SCN neuronal activity, which we posit disinhibits downstream orexigenic responses. These findings define a connection between the reward and circadian pathways in the regulation of pathological calorie consumption.
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47
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Newmyer BA, Whindleton CM, Srinivasa N, Jones MK, Scott MM. Genetic variation affects binge feeding behavior in female inbred mouse strains. Sci Rep 2019; 9:15709. [PMID: 31673099 PMCID: PMC6823456 DOI: 10.1038/s41598-019-51874-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 10/09/2019] [Indexed: 12/17/2022] Open
Abstract
Identifying genetic variants that regulate binge eating (BE) is critical for understanding the factors that control this behavior and for the development of pharmacological treatment strategies. Although several studies have revealed specific genes capable of affecting BE behavior, less is known about how genetic variation modulates BE. Thus, through a paradigm that promoted binge-like food intake through intermittent access to high calorie diet (HCD), we quantified food-intake in four inbred mouse strains: C57Bl/6J (B6), NOD/LtJ (NOD), 129S1/SvlmJ (S1), and A/J (AJ). We report that genetic variation likely influences the chronic regulation of food intake and the binge-like consumption of a palatable HCD. AJ mice consumed more of both standard chow and HCD than the other three strains tested when both diets were available ad libitum, while S1 mice consumed significantly less HCD than other strains during intermittent HCD access. Behavioral differences were also associated with differential changes in c-Fos immunohistochemistry in brain regions traditionally associated with appetite regulation. Our results identify 129S1/SvlmJ as a strain that exhibits low levels of binge feeding behavior and suggests that this strain could be useful in the investigation of the influence of genetic variation in the control of binge food intake.
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Affiliation(s)
- Brandon A Newmyer
- Department of Pharmacology, University of Virginia, Charlottesville, VA, USA
| | - Ciarra M Whindleton
- Department of Pharmacology, University of Virginia, Charlottesville, VA, USA
| | - Nandan Srinivasa
- Department of Pharmacology, University of Virginia, Charlottesville, VA, USA
| | - Marieke K Jones
- Health Sciences Library, University of Virginia, Charlottesville, VA, USA
| | - Michael M Scott
- Department of Pharmacology, University of Virginia, Charlottesville, VA, USA.
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48
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Hankir MK, Rullmann M, Seyfried F, Preusser S, Poppitz S, Heba S, Gousias K, Hoyer J, Schütz T, Dietrich A, Müller K, Pleger B. Roux-en-Y gastric bypass surgery progressively alters radiologic measures of hypothalamic inflammation in obese patients. JCI Insight 2019; 4:131329. [PMID: 31465301 DOI: 10.1172/jci.insight.131329] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/23/2019] [Indexed: 12/19/2022] Open
Abstract
There is increased interest in whether bariatric surgeries such as Roux-en-Y gastric bypass (RYGB) achieve their profound weight-lowering effects in morbidly obese individuals through the brain. Hypothalamic inflammation is a well-recognized etiologic factor in obesity pathogenesis and so represents a potential target of RYGB, but clinical evidence in support of this is limited. We therefore assessed hypothalamic T2-weighted signal intensities (T2W SI) and fractional anisotropy (FA) values, 2 validated radiologic measures of brain inflammation, in relation to BMI and fat mass, as well as circulating inflammatory (C-reactive protein; CrP) and metabolic markers in a cohort of 27 RYGB patients at baseline and 6 and 12 months after surgery. We found that RYGB progressively increased hypothalamic T2W SI values, while it progressively decreased hypothalamic FA values. Regression analyses further revealed that this could be most strongly linked to plasma CrP levels, which independently predicted hypothalamic FA values when adjusting for age, sex, fat mass, and diabetes diagnosis. These findings suggest that RYGB has a major time-dependent impact on hypothalamic inflammation status, possibly by attenuating peripheral inflammation. They also suggest that hypothalamic FA values may provide a more specific radiologic measure of hypothalamic inflammation than more commonly used T2W SI values.
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Affiliation(s)
- Mohammed K Hankir
- Department of Experimental Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Michael Rullmann
- IFB AdiposityDiseases and.,Department of Nuclear Medicine, University Hospital Leipzig, Germany.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.,Collaborative Research Centre 1052 in Obesity Mechanisms, University of Leipzig, Leipzig, Germany
| | - Florian Seyfried
- Department of General, Visceral, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Sven Preusser
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Sindy Poppitz
- IFB AdiposityDiseases and.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | | | - Konstantinos Gousias
- Department of Neurosurgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Jana Hoyer
- Department of Behavioral Epidemiology, Department of Psychology, Technische Universität Dresden, Dresden, Germany
| | | | - Arne Dietrich
- IFB AdiposityDiseases and.,Department of Bariatric Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Karsten Müller
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Burkhard Pleger
- IFB AdiposityDiseases and.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.,Collaborative Research Centre 1052 in Obesity Mechanisms, University of Leipzig, Leipzig, Germany.,Department of Neurology and
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49
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Folgueira C, Beiroa D, Porteiro B, Duquenne M, Puighermanal E, Fondevila MF, Barja-Fernández S, Gallego R, Hernández-Bautista R, Castelao C, Senra A, Seoane P, Gómez N, Aguiar P, Guallar D, Fidalgo M, Romero-Pico A, Adan R, Blouet C, Labandeira-García JL, Jeanrenaud F, Kallo I, Liposits Z, Salvador J, Prevot V, Dieguez C, Lopez M, Valjent E, Frühbeck G, Seoane LM, Nogueiras R. Hypothalamic dopamine signaling regulates brown fat thermogenesis. Nat Metab 2019; 1:811-829. [PMID: 31579887 PMCID: PMC6774781 DOI: 10.1038/s42255-019-0099-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dopamine signaling is a crucial part of the brain reward system and can affect feeding behavior. Dopamine receptors are also expressed in the hypothalamus, which is known to control energy metabolism in peripheral tissues. Here we show that pharmacological or chemogenetic stimulation of dopamine receptor 2 (D2R) expressing cells in the lateral hypothalamic area (LHA) and the zona incerta (ZI) decreases body weight and stimulates brown fat activity in rodents in a feeding-independent manner. LHA/ZI D2R stimulation requires an intact sympathetic nervous system and orexin system to exert its action and involves inhibition of PI3K in the LHA/ZI. We further demonstrate that, as early as 3 months after onset of treatment, patients treated with the D2R agonist cabergoline experience an increase in energy expenditure that persists for one year, leading to total body weight and fat loss through a prolactin-independent mechanism. Our results may provide a mechanistic explanation for how clinically used D2R agonists act in the CNS to regulate energy balance.
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Affiliation(s)
- Cintia Folgueira
- Grupo Fisiopatología Endocrina, Instituto de Investigación Sanitaria de Santiago de Compostela, Complexo. Hospitalario Universitario de Santiago (CHUS/SERGAS), Instituto de Investigación Sanitaria, Santiago de Compostela, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Daniel Beiroa
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Begoña Porteiro
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Manon Duquenne
- Jean-Pierre Aubert Research Center (JPArc), Laboratory of Development and Plasticity of the Neuroendocrine Brain, Inserm UMR-S 1172, Lille, France
| | | | - Marcos F Fondevila
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Silvia Barja-Fernández
- Grupo Fisiopatología Endocrina, Instituto de Investigación Sanitaria de Santiago de Compostela, Complexo. Hospitalario Universitario de Santiago (CHUS/SERGAS), Instituto de Investigación Sanitaria, Santiago de Compostela, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Rosalia Gallego
- Department of Morphological Sciences, School of Medicine, University of Santiago de Compostela, S. Francisco s/n, 15782 Santiago de Compostela (A Coruña), Spain
| | - René Hernández-Bautista
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
| | - Cecilia Castelao
- Grupo Fisiopatología Endocrina, Instituto de Investigación Sanitaria de Santiago de Compostela, Complexo. Hospitalario Universitario de Santiago (CHUS/SERGAS), Instituto de Investigación Sanitaria, Santiago de Compostela, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Ana Senra
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
| | - Patricia Seoane
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Noemi Gómez
- Molecular Imaging Group, Department of Psychiatry, Radiology and Public Health, Faculty of Medicine Universidade de Santiago de Compostela (USC), Santiago de Compostela 15782 Spain; Molecular Imaging Group. Health Research Institute of Santiago de Compostela (IDIS). Travesía da Choupana s/n Santiago de Compostela. Zip Code: 15706. Spain; Nuclear Medicine Department University Clinical Hospital Santiago de Compostela (SERGAS) (CHUS), Travesía Choupana s/n. Santiago de Compostela 15706 Spain
| | - Pablo Aguiar
- Molecular Imaging Group, Department of Psychiatry, Radiology and Public Health, Faculty of Medicine Universidade de Santiago de Compostela (USC), Santiago de Compostela 15782 Spain; Molecular Imaging Group. Health Research Institute of Santiago de Compostela (IDIS). Travesía da Choupana s/n Santiago de Compostela. Zip Code: 15706. Spain; Nuclear Medicine Department University Clinical Hospital Santiago de Compostela (SERGAS) (CHUS), Travesía Choupana s/n. Santiago de Compostela 15706 Spain
| | - Diana Guallar
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
| | - Miguel Fidalgo
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
| | - Amparo Romero-Pico
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Roger Adan
- Brain Center Rudolf Magnus, Department of Neuroscience and Pharmacology, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, The Netherlands
| | - Clemence Blouet
- MRC Metabolic Disease Unit. Institute of Metabolic Science. University of Cambridge, UK
| | - Jose Luís Labandeira-García
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- Networking Research Center on Neurodegenerative Diseases, CIBERNED, Madrid, Spain
| | - Françoise Jeanrenaud
- Laboratory of Metabolism, Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Imre Kallo
- Laboratory of Endocrine Neurobiology, Institute of Experimental Medicine, HAS, 1083, Budapest, Hungary
| | - Zsolt Liposits
- Laboratory of Endocrine Neurobiology, Institute of Experimental Medicine, HAS, 1083, Budapest, Hungary
| | - Javier Salvador
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra & IdiSNA, Pamplona, Spain
| | - Vincent Prevot
- Jean-Pierre Aubert Research Center (JPArc), Laboratory of Development and Plasticity of the Neuroendocrine Brain, Inserm UMR-S 1172, Lille, France
| | - Carlos Dieguez
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Miguel Lopez
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Emmanuel Valjent
- IGF, Inserm, CNRS, Univ. Montpellier, F-34094 Montpellier, France
| | - Gema Frühbeck
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra & IdiSNA, Pamplona, Spain
| | - Luisa M Seoane
- Grupo Fisiopatología Endocrina, Instituto de Investigación Sanitaria de Santiago de Compostela, Complexo. Hospitalario Universitario de Santiago (CHUS/SERGAS), Instituto de Investigación Sanitaria, Santiago de Compostela, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Ruben Nogueiras
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela, 15782, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
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50
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Joffe ME, Santiago CI, Engers JL, Lindsley CW, Conn PJ. Metabotropic glutamate receptor subtype 3 gates acute stress-induced dysregulation of amygdalo-cortical function. Mol Psychiatry 2019; 24:916-927. [PMID: 29269844 PMCID: PMC6013320 DOI: 10.1038/s41380-017-0015-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/08/2017] [Accepted: 11/01/2017] [Indexed: 11/09/2022]
Abstract
Stress can precipitate or worsen symptoms of many psychiatric disorders by dysregulating glutamatergic function within the prefrontal cortex (PFC). Previous studies suggest that antagonists of group II metabotropic glutamate (mGlu) receptors (mGlu2 and mGlu3) reduce stress-induced anhedonia through actions in the PFC, but the mechanisms by which these receptors act are not known. We now report that activation of mGlu3 induces long-term depression (LTD) of excitatory transmission in the PFC at inputs from the basolateral amygdala. Our data suggest mGlu3-LTD is mediated by postsynaptic AMPAR internalization in PFC pyramidal cells, and we observed a profound impairment in mGlu3-LTD following a single, 20-min restraint stress exposure. Finally, blocking mGlu3 activation in vivo prevented the stress-induced maladaptive changes to amydalo-cortical physiology and motivated behavior. These data demonstrate that mGlu3 mediates stress-induced physiological and behavioral impairments and further support the potential for mGlu3 modulation as a treatment for stress-related psychiatric disorders.
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Affiliation(s)
- Max E. Joffe
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA,Vanderbilt Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA
| | - Chiaki I. Santiago
- Vanderbilt Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA,Vanderbilt University, Nashville, TN, 37232, USA
| | - Julie L. Engers
- Vanderbilt Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA
| | - Craig W. Lindsley
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA,Vanderbilt Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA,Department of Chemistry, Vanderbilt University, Nashville, TN, 37232, USA
| | - P. Jeffrey Conn
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA,Vanderbilt Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA,Correspondence to: P. Jeffrey Conn, Ph.D., Lee E. Limbird Professor of Pharmacology, Director, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, 1205 Light Hall Nashville, TN 37232-0697, Tel. (615) 936-2478, Fax. (615) 343-3088,
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