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Robbins TW, Banca P, Belin D. From compulsivity to compulsion: the neural basis of compulsive disorders. Nat Rev Neurosci 2024; 25:313-333. [PMID: 38594324 DOI: 10.1038/s41583-024-00807-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 04/11/2024]
Abstract
Compulsive behaviour, an apparently irrational perseveration in often maladaptive acts, is a potential transdiagnostic symptom of several neuropsychiatric disorders, including obsessive-compulsive disorder and addiction, and may reflect the severe manifestation of a dimensional trait termed compulsivity. In this Review, we examine the psychological basis of compulsions and compulsivity and their underlying neural circuitry using evidence from human neuroimaging and animal models. Several main elements of this circuitry are identified, focused on fronto-striatal systems implicated in goal-directed behaviour and habits. These systems include the orbitofrontal, prefrontal, anterior cingulate and insular cortices and their connections with the basal ganglia as well as sensoriomotor and parietal cortices and cerebellum. We also consider the implications for future classification of impulsive-compulsive disorders and their treatment.
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Affiliation(s)
- Trevor W Robbins
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK.
| | - Paula Banca
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK
| | - David Belin
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge, UK
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2
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Prados-Pardo Á, Martín-González E, Mora S, Martín C, Olmedo-Córdoba M, Pérez-Fernandez C, Sánchez-Santed F, Moreno-Montoya M. Reduced Expression of the Htr2a, Grin1, and Bdnf Genes and Cognitive Inflexibility in a Model of High Compulsive Rats. Mol Neurobiol 2023; 60:6975-6991. [PMID: 37523044 DOI: 10.1007/s12035-023-03506-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/12/2023] [Indexed: 08/01/2023]
Abstract
Compulsivity is a core symptom in different psychopathological disorders, characterized by excessive behaviors and behavioral inflexibility. The selection of high drinker (HD) versus low drinker (LD) rats by schedule-induced polydipsia (SIP) is a valid model for studying the compulsive phenotype. The compulsive HD rats showed cognitive inflexibility and reduced serotonin 2A (5-HT2A) receptor binding levels in the frontal cortex (FC). According to that, we hypothesize that compulsive HD rats might have an alteration in the cognitive control domain regarding inflexibility, assessed by spatial memory on the Morris Water Maze (MWM), working and reference memory by the Radial Arm Maze, and behavioral deficits in stimulus processing by the Novel Object Recognition test. The possible underlying mechanisms might be linked to the brain gene expression of 5HT2A, 5HT2C, glutamate NMDA receptors, and brain-derived neurotrophic factor (BDNF) in FC, hippocampus, and amygdala. HD rats confirmed a cognitive inflexibility profile on the reversal condition in the MWM compared to LD rats, while no differences were observed on stimulus processing, spatial, and working memory. Moreover, HD rats showed a reduced expression of the Htr2a, Grin1, and Bdnf genes in FC. Furthermore, there was a negative correlation between the relative expression of the Htr2a, Grin1, and Bdnf genes in FC and the level of compulsive water intake in HD rats on SIP. These data reveal that cognitive inflexibility may not be associated with a memory or stimulus processing deficit in compulsive individuals but may result by a region-specific alteration of the Htr2a, Grin1, and Bdnf gene expression in FC.
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Affiliation(s)
- Ángeles Prados-Pardo
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Elena Martín-González
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Santiago Mora
- Department of Neuroscience and Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Carlos Martín
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Manuela Olmedo-Córdoba
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Cristian Pérez-Fernandez
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Fernando Sánchez-Santed
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain
| | - Margarita Moreno-Montoya
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120, Almería, Spain.
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Martín-González E, Prados-Pardo Á, Sawiak SJ, Dalley JW, Padro D, Ramos-Cabrer P, Mora S, Moreno-Montoya M. Mapping the neuroanatomical abnormalities in a phenotype of male compulsive rats. BEHAVIORAL AND BRAIN FUNCTIONS : BBF 2023; 19:19. [PMID: 37932782 PMCID: PMC10626819 DOI: 10.1186/s12993-023-00221-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 10/28/2023] [Indexed: 11/08/2023]
Abstract
Compulsivity is considered a transdiagnostic dimension in obsessive-compulsive and related disorders, characterized by heterogeneous cognitive and behavioral phenotypes associated with abnormalities in cortico-striatal-thalamic-cortical circuitry. The present study investigated the structural morphology of white and gray matter in rats selected for low- (LD) and high- (HD) compulsive drinking behavior on a schedule-induced polydipsia (SIP) task. Regional brain morphology was assessed using ex-vivo high-resolution magnetic resonance imaging (MRI). Voxel-based morphometry of segmented MRI images revealed larger white matter volumes in anterior commissure and corpus callosum of HD rats compared with LD rats. HD rats also showed significantly larger regional volumes of dorsolateral orbitofrontal cortex, striatum, amygdala, hippocampus, midbrain, sub-thalamic nucleus, and cerebellum. By contrast, the medial prefrontal cortex was significantly smaller in HD rats compared with LD rats with no significant group differences in whole brain, ventricular, or cerebrospinal fluid volumes. These findings show that limbic cortico-basal ganglia structures implicated in impulse control disorders are distinct in rats that are vulnerable to develop compulsive behavior. Such abnormalities may be relevant to the etiology of compulsive disorders in humans.
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Affiliation(s)
- Elena Martín-González
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Ángeles Prados-Pardo
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
| | - Stephen J Sawiak
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Jeffrey W Dalley
- Department of Psychology, University of Cambridge, Cambridge, UK
- Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - Daniel Padro
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, Donostia-San Sebastián, Spain
| | - Pedro Ramos-Cabrer
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Santiago Mora
- Department of Neuroscience, University of Copenhagen Panum Institute, Copenhagen, Denmark
| | - Margarita Moreno-Montoya
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain.
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Giri A, Mehan S, Khan Z, Gupta GD, Narula AS. Melatonin-mediated IGF-1/GLP-1 activation in experimental OCD rats: Evidence from CSF, blood plasma, brain and in-silico investigations. Biochem Pharmacol 2023; 217:115831. [PMID: 37777162 DOI: 10.1016/j.bcp.2023.115831] [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: 06/26/2023] [Revised: 09/14/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Obsessive-compulsive disorder (OCD) is a neuropsychiatric condition characterized by intrusive, repetitive thoughts and behaviors. Our study uses a validated 8-OH-DPAT-induced experimental model of OCD in rodents. We focus on the modulatory effects of Insulin-like growth factor-1 (IGF-1) and glucagon-like peptide-1 (GLP-1), which are linked to neurodevelopment and survival. Current research investigates melatonin, a molecule with neuroprotective properties and multiple functions. Melatonin has beneficial effects on various illnesses, including Alzheimer's, Parkinson's, and depression, indicating its potential efficacy in treating OCD. In the present study, we employed two doses of melatonin, 5 mg/kg and 10 mg/kg, demonstrating a dose-dependent effect on 8-OH-DPAT-induced rat changes. In addition, the melatonin antagonist luzindole 5 mg/kg was utilized to compare and validate the efficacy of melatonin. In-silico studies alsocontribute to understanding the activation of IGF-1/GLP-1 pathways by melatonin. Current research indicates restoring neurochemical measurements on various biological samples (brain homogenates, CSF, and blood plasma) and morphological and histological analyses. In addition, the current research seeks to increase understanding of OCD and investigate potential new treatment strategies. Therefore, it is evident from the aforementioned research that the protective effect of melatonin can serve as a strong basis for developing a new OCD treatment by upregulating IGF-1 and GLP-1 levels. The primary focus of current study revolves around the examination of melatonin as an activator of IGF-1/GLP-1, with the aim of potentially mitigating behavioral, neurochemical, and histopathological abnormalities in an experimental model of obsessive-compulsive disorder caused by 8-OH-DPAT in adult Wistar rats.
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Affiliation(s)
- Aditi Giri
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India), Moga, Punjab, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India), Moga, Punjab, India.
| | - Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India), Moga, Punjab, India
| | - Ghanshyam Das Gupta
- Department of Pharmaceutics, ISF College of Pharmacy, (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India), Moga, Punjab, India
| | - Acharan S Narula
- Narula Research, LLC, 107 Boulder Bluff, Chapel Hill, NC 27516, USA
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Sanz-Martos AB, Fuentes-Verdugo E, Merino B, Morales L, Pérez V, Capellán R, Pellón R, Miguéns M, Del Olmo N. Schedule-induced alcohol intake during adolescence sex dependently impairs hippocampal synaptic plasticity and spatial memory. Behav Brain Res 2023; 452:114576. [PMID: 37423317 DOI: 10.1016/j.bbr.2023.114576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/16/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
In a previous study, we demonstrated that intermittent ethanol administration in male adolescent animals impaired hippocampus-dependent spatial memory, particularly under conditions of excessive ethanol administration. In this current study, we subjected adolescent male and female Wistar rats an alcohol schedule-induced drinking (SID) procedure to obtain an elevated rate of alcohol self-administration and assessed their hippocampus-dependent spatial memory. We also studied hippocampal synaptic transmission and plasticity, as well as the expression levels of several genes involved in these mechanisms. Both male and female rats exhibited similar drinking patterns throughout the sessions of the SID protocol reaching similar blood alcohol levels in all the groups. However, only male rats that consumed alcohol showed spatial memory deficits which correlated with inhibition of hippocampal synaptic plasticity as long-term potentiation. In contrast, alcohol did not modify hippocampal gene expression of AMPA and NMDA glutamate receptor subunits, although there are differences in the expression levels of several genes relevant to synaptic plasticity mechanisms underlying learning and memory processes, related to alcohol consumption as Ephb2, sex differences as Pi3k or the interaction of both factors such as Pten. In conclusion, elevated alcohol intake during adolescence seems to have a negative impact on spatial memory and hippocampal synaptic plasticity in a sex dependent manner, even both sexes exhibit similar blood alcohol concentrations and drinking patterns.
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Affiliation(s)
- Ana Belén Sanz-Martos
- Department of Psychobiology, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Esmeralda Fuentes-Verdugo
- Department of Basic Psychology I, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Beatriz Merino
- Department of Pharmaceutical and Nutritional Sciences, School of Pharmacy, San Pablo-CEU University, Urb. Montepríncipe, Boadilla del Monte, Madrid, Spain
| | - Lidia Morales
- Department of Pharmaceutical and Nutritional Sciences, School of Pharmacy, San Pablo-CEU University, Urb. Montepríncipe, Boadilla del Monte, Madrid, Spain
| | - Vicente Pérez
- Department of Basic Psychology I, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Roberto Capellán
- Department of Psychobiology, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Ricardo Pellón
- Department of Basic Psychology I, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Miguel Miguéns
- Department of Basic Psychology I, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain
| | - Nuria Del Olmo
- Department of Psychobiology, School of Psychology, UNED, C/Juan del Rosal 10, 28040 Madrid, Spain.
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Martín-González E, Olmedo-Córdoba M, Prados-Pardo Á, Cruz-Garzón DJ, Flores P, Mora S, Moreno-Montoya M. Behavioral domains in compulsive rats: implications for understanding compulsive spectrum disorders. Front Behav Neurosci 2023; 17:1175137. [PMID: 37273281 PMCID: PMC10234153 DOI: 10.3389/fnbeh.2023.1175137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/21/2023] [Indexed: 06/06/2023] Open
Abstract
Introduction Compulsive behavior has been proposed as a transdiagnostic trait observed in different neuropsychiatric disorders, such as obsessive-compulsive disorder, autism, and schizophrenia. Research Domain Criteria (RDoC) strategy could help to disentangle the neuropsychological basis of compulsivity for developing new therapeutic and preventive approaches. In preclinical research, the selection of high-drinker (HD) vs. low-drinker (LD) animals by schedule-induced polydipsia (SIP) is considered a putative model of compulsivity, which includes a well-differentiated behavioral pattern. Methods The purpose of this research was to assess the cognitive control and the negative valence system domains in a phenotype of compulsive HD rats. After the selection of animals as HD or LD, we assessed behavioral inflexibility by probabilistic spatial reversal learning (PSRL), motor and cognitive impulsivity by variable delay-to-signal (VDS), and risky decision-making by rodent gambling task (rGT). Results HD rats performed fewer reversals and showed less probability of pressing the same lever that was previously reinforced on PSRL, more premature responses after the exposure to longer delays on VDS, and more disadvantageous risky choices on rGT. Moreover, HD animals performed more perseverative responses under the punishment period on rGT. Discussion These results highlight that HD compulsive phenotype exhibits behavioral inflexibility, insensitivity to positive feedback, waiting impulsivity, risky decision-making, and frustrative non-reward responsiveness. Moreover, these findings demonstrate the importance of mapping different behavioral domains to prevent, treat, and diagnose compulsive spectrum disorders correctly.
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Affiliation(s)
- Elena Martín-González
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
| | - Manuela Olmedo-Córdoba
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
| | - Ángeles Prados-Pardo
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
| | - Daniel J. Cruz-Garzón
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
| | - Pilar Flores
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
| | - Santiago Mora
- Department of Neuroscience and Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Margarita Moreno-Montoya
- Department of Psychology and Health Research Centre (CEINSA), University of Almería, Almería, Spain
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Velazquez-Sanchez C, Muresan L, Marti-Prats L, Belin D. The development of compulsive coping behaviour is associated with a downregulation of Arc in a Locus Coeruleus neuronal ensemble. Neuropsychopharmacology 2023; 48:653-663. [PMID: 36635597 PMCID: PMC9938202 DOI: 10.1038/s41386-022-01522-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 01/14/2023]
Abstract
Some compulsive disorders have been considered to stem from the loss of control over coping strategies, such as displacement. However, the cellular mechanisms involved in the acquisition of coping behaviours and their subsequent compulsive manifestation in vulnerable individuals have not been elucidated. Considering the role of the locus coeruleus (LC) noradrenaline-dependent system in stress and related excessive behaviours, we hypothesised that neuroplastic changes in the LC may be associated with the acquisition of an adjunctive polydipsic water drinking, a prototypical displacement behaviour, and the ensuing development of compulsion in vulnerable individuals. Thus, male Sprague Dawley rats were characterised for their tendency, or not, to develop compulsive polydipsic drinking in a schedule-induced polydipsia (SIP) procedure before their fresh brains were harvested. A new quantification tool for RNAscope assays revealed that the development of compulsive adjunctive behaviour was associated with a low mRNA copy number of the plasticity marker Arc in the LC which appeared to be driven by specific adaptations in an ensemble of tyrosine hydroxylase (TH)+, zif268- neurons. This ensemble was specifically engaged by the expression of compulsive adjunctive behaviour, not by stress, because its functional recruitment was not observed in individuals that no longer had access to the water bottle before sacrifice, while it consistently correlated with the levels of polydipsic water drinking only when it had become compulsive. Together these findings suggest that downregulation of Arc mRNA levels in a population of a TH+/zif268- LC neurons represents a signature of the tendency to develop compulsive coping behaviours.
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Affiliation(s)
- Clara Velazquez-Sanchez
- CLIC (Cambridge Laboratory for research on Impulsive/Compulsive disorders), Department of Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, UK
| | - Leila Muresan
- Cambridge Advanced Imaging Centre, Department of Physiology Development and Neuroscience of the University of Cambridge, Downing Street, Cambridge, CB2 3DY, UK
| | - Lucia Marti-Prats
- CLIC (Cambridge Laboratory for research on Impulsive/Compulsive disorders), Department of Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, UK
| | - David Belin
- CLIC (Cambridge Laboratory for research on Impulsive/Compulsive disorders), Department of Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, UK.
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Martín-González E, Olmedo-Córdoba M, Flores P, Moreno-Montoya M. Differential Neurobiological Markers in Phenotype-stratified Rats Modeling High or Low Vulnerability to Compulsive Behavior: A Narrative Review. Curr Neuropharmacol 2023; 21:1924-1933. [PMID: 36411566 PMCID: PMC10514532 DOI: 10.2174/1570159x21666221121091454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/15/2022] [Accepted: 10/31/2022] [Indexed: 11/23/2022] Open
Abstract
Compulsivity is a key manifestation of inhibitory control deficit and a cardinal symptom in different neuropsychopathological disorders such as obsessive-compulsive disorder, schizophrenia, addiction, and attention-deficit hyperactivity disorder. Schedule-induced polydipsia (SIP), is an animal model to study compulsivity. In this procedure, rodents develop excessive and persistent drinking behavior under different food-reinforcement schedules, that are not related to homeostatic or regulatory requirements. However, there are important individual differences that support the role of high-drinker HD rats as a compulsive phenotype, characterized in different paradigms by inhibitory response deficit, cognitive inflexibility, and resistant to extinction behavior; with significant differences in response to pharmacological challenges, and relevant neurobiological alterations in comparison with the control group, the non-compulsive low drinker LD group on SIP. The purpose of this review is to collate and update the main findings on the neurobiological bases of compulsivity using the SIP model. Specifically, we reviewed preclinical studies on SIP, that have assessed the effects of serotonergic, dopaminergic, and glutamatergic drugs; leading to the description of the neurobiological markers, such as the key role of the serotonin 5-HT2A receptor and glutamatergic signaling in a phenotype vulnerable to compulsivity as high drinker HD rats selected by SIP. The review of the main findings of HD rats on SIP helps in the characterization of the preclinical compulsive phenotype, disentangles the underlying neurobiological, and points toward genetic hallmarks concerning the vulnerability to compulsivity.
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Affiliation(s)
- Elena Martín-González
- Department of Psychology and Health Research Center (CEINSA), University of Almería, Almeria, Spain
| | - Manuela Olmedo-Córdoba
- Department of Psychology and Health Research Center (CEINSA), University of Almería, Almeria, Spain
| | - Pilar Flores
- Department of Psychology and Health Research Center (CEINSA), University of Almería, Almeria, Spain
| | - Margarita Moreno-Montoya
- Department of Psychology and Health Research Center (CEINSA), University of Almería, Almeria, Spain
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Grant KA, Newman NN, Gonzales SW, Cuzon Carlson VC. Impact of putamen inhibition by DREADDs on schedule-induced drinking in rhesus monkeys. J Exp Anal Behav 2022; 117:493-504. [PMID: 35411949 PMCID: PMC9090979 DOI: 10.1002/jeab.761] [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: 11/16/2021] [Revised: 03/30/2022] [Accepted: 03/30/2022] [Indexed: 11/11/2022]
Abstract
The putamen is a nucleus within the sensory-motor striatal network that is involved in automatic, habitual actions. Schedule-induced polydipsia (SIP) is highly automated behavior, reliably occurring under intermediate interval schedules of reinforcement. The effect of putamen inhibition in mediating SIP of water and ethanol (4% w/v) under a Fixed Time 5-min (FT-5 min) schedule for food delivery was tested in 12 rhesus monkeys (6 male, 6 female). Water and ethanol SIP sessions ended after set volumes were consumed. Baseline patterns of SIP intake differed between water and ethanol SIP in volume but not in pattern of drinking. Activation of the designer receptor exclusively activated by designer drug (DREADD: hM4Di) with deschloroclozapine (DCZ; 300 μg/kg, i.m.) administered 30 min prior to the onset of the SIP session, for four consecutive sessions. DCZ administration increased the postpellet drink volume and reduced the time to drink both water and ethanol. Although the effect of DCZ treatment was similar for increasing SIP with either water or ethanol, post-DCZ return to baseline SIP rates of differed, perhaps highlighting the effect of a state dependency with ethanol SIP. Overall, the study shows that targeting the putamen with the inhibitory DREADD produces a reversible, reproducible and reliable increase in adjunctive drinking.
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Affiliation(s)
- Kathleen A Grant
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton.,Department of Behavioral Neuroscience, Oregon Health & Science University, Portland
| | - Natali N Newman
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton
| | - Steven W Gonzales
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton
| | - Verginia C Cuzon Carlson
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton.,Department of Behavioral Neuroscience, Oregon Health & Science University, Portland
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Abreu AC, Mora S, Tristán AI, Martín-González E, Prados-Pardo Á, Moreno M, Fernández I. NMR-based Metabolomics and Fatty Acid Profiles to Unravel Biomarkers in Preclinical Animal Models of Compulsive Behavior. J Proteome Res 2022; 21:612-622. [PMID: 35142515 PMCID: PMC8902800 DOI: 10.1021/acs.jproteome.1c00857] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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Compulsivity is a
key manifestation of inhibitory control deficit
and a cardinal symptom of psychopathological conditions such as obsessive-compulsive
and attention-deficit hyperactivity disorders, in which metabolic
alterations have raised attention as putative biomarkers for early
identification. The present study assessed the metabolic profile in
a preclinical model of a compulsive phenotype of rats. We used the
schedule-induced polydipsia (SIP) method to classify male Wistar rats
into high drinkers (HDs) or low drinkers (LDs) according to their
compulsive drinking rate developed by exposure to a fixed-time 60
s (FT-60) schedule of reinforcement with water available ad
libitum during 20 sessions. Before and after SIP, blood samples
were collected for subsequent serum analysis by nuclear magnetic resonance
spectroscopy coupled to multivariate analysis. Although no differences
existed in the pre-SIP set, the compulsive drinking behavior induced
remarkable metabolic alterations: HD rats selected by SIP exhibited
a hyperlipidemic, hypoglycemic, and hyperglutaminergic profile compared
with their low-compulsive counterparts. Interestingly, these alterations
were not attributable to the mere exposure to reward pellets because
a control experiment did not show differences between HDs and LDs
after 20 sessions of pellet consumption without intermittent reinforcement.
Our results shed light toward the implication of dietary and metabolic
factors underpinning the vulnerability to compulsive behaviors.
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Affiliation(s)
- Ana C Abreu
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Santiago Mora
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Ana Isabel Tristán
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Elena Martín-González
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Ángeles Prados-Pardo
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Margarita Moreno
- Department of Psychology and Health Research Center CEINSA, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
| | - Ignacio Fernández
- Department of Chemistry and Physics, Research Centre CIAIMBITAL, University of Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
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