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Spanagel R, Bach P, Banaschewski T, Beck A, Bermpohl F, Bernardi RE, Beste C, Deserno L, Durstewitz D, Ebner‐Priemer U, Endrass T, Ersche KD, Feld G, Gerchen MF, Gerlach B, Goschke T, Hansson AC, Heim C, Kiebel S, Kiefer F, Kirsch P, Kirschbaum C, Koppe G, Lenz B, Liu S, Marxen M, Meinhardt MW, Meyer‐Lindenberg A, Montag C, Müller CP, Nagel WE, Oliveria AMM, Owald D, Pilhatsch M, Priller J, Rapp MA, Reichert M, Ripke S, Ritter K, Romanczuk‐Seiferth N, Schlagenhauf F, Schwarz E, Schwöbel S, Smolka MN, Soekadar SR, Sommer WH, Stock A, Ströhle A, Tost H, Vollstädt‐Klein S, Walter H, Waschke T, Witt SH, Heinz A. The ReCoDe addiction research consortium: Losing and regaining control over drug intake-Findings and future perspectives. Addict Biol 2024; 29:e13419. [PMID: 38949209 PMCID: PMC11215792 DOI: 10.1111/adb.13419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 07/02/2024]
Abstract
Substance use disorders (SUDs) are seen as a continuum ranging from goal-directed and hedonic drug use to loss of control over drug intake with aversive consequences for mental and physical health and social functioning. The main goals of our interdisciplinary German collaborative research centre on Losing and Regaining Control over Drug Intake (ReCoDe) are (i) to study triggers (drug cues, stressors, drug priming) and modifying factors (age, gender, physical activity, cognitive functions, childhood adversity, social factors, such as loneliness and social contact/interaction) that longitudinally modulate the trajectories of losing and regaining control over drug consumption under real-life conditions. (ii) To study underlying behavioural, cognitive and neurobiological mechanisms of disease trajectories and drug-related behaviours and (iii) to provide non-invasive mechanism-based interventions. These goals are achieved by: (A) using innovative mHealth (mobile health) tools to longitudinally monitor the effects of triggers and modifying factors on drug consumption patterns in real life in a cohort of 900 patients with alcohol use disorder. This approach will be complemented by animal models of addiction with 24/7 automated behavioural monitoring across an entire disease trajectory; i.e. from a naïve state to a drug-taking state to an addiction or resilience-like state. (B) The identification and, if applicable, computational modelling of key molecular, neurobiological and psychological mechanisms (e.g., reduced cognitive flexibility) mediating the effects of such triggers and modifying factors on disease trajectories. (C) Developing and testing non-invasive interventions (e.g., Just-In-Time-Adaptive-Interventions (JITAIs), various non-invasive brain stimulations (NIBS), individualized physical activity) that specifically target the underlying mechanisms for regaining control over drug intake. Here, we will report on the most important results of the first funding period and outline our future research strategy.
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Affiliation(s)
- Rainer Spanagel
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Patrick Bach
- Department of Addictive Behavior and Addiction MedicineCentral Institute of Mental HealthMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Anne Beck
- Department of Psychology, Faculty of HealthHealth and Medical University PotsdamPotsdamGermany
| | - Felix Bermpohl
- Department of Psychiatry and PsychotherapyCharité Campus St. Hedwig HospitalBerlinGermany
| | - Rick E. Bernardi
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Christian Beste
- Cognitive NeurophysiologyDepartment of Child and Adolescent Psychiatry and the University Neuropsychology Center (UNC)DresdenGermany
| | - Lorenz Deserno
- Department of Child and Adolescent Psychiatry, Psychotherapy and PsychosomaticsUniversity Hospital and University WürzburgWürzburgGermany
| | - Daniel Durstewitz
- Department of Theoretical NeuroscienceCentral Institute of Mental HealthMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Ulrich Ebner‐Priemer
- Mental mHealth Lab, Institute of Sports and Sports ScienceKarlsruhe Institute of TechnologyKarlsruheGermany
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Tanja Endrass
- Faculty of PsychologyTechnische Universität DresdenDresdenGermany
| | - Karen D. Ersche
- Department of Addictive Behavior and Addiction MedicineCentral Institute of Mental HealthMannheimGermany
- Department of PsychiatryUniversity of CambridgeCambridgeUK
| | - Gordon Feld
- Department of Clinical PsychologyCentral Institute of Mental HealthMannheimGermany
| | | | - Björn Gerlach
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Thomas Goschke
- Faculty of PsychologyTechnische Universität DresdenDresdenGermany
| | - Anita Christiane Hansson
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Christine Heim
- Institute of Medical PsychologyCharité, Universitätsmedizin BerlinBerlinGermany
| | - Stefan Kiebel
- Cognitive Computational Neuroscience, Faculty of PsychologyTechnische Universität DresdenDresdenGermany
| | - Falk Kiefer
- Department of Addictive Behavior and Addiction MedicineCentral Institute of Mental HealthMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Peter Kirsch
- Department of Clinical PsychologyCentral Institute of Mental HealthMannheimGermany
| | - Clemens Kirschbaum
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Georgia Koppe
- Department of Theoretical NeuroscienceCentral Institute of Mental HealthMannheimGermany
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Hector Institute for Artificial Intelligence in Psychiatry, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Bernd Lenz
- Department of Addictive Behavior and Addiction MedicineCentral Institute of Mental HealthMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Shuyan Liu
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Michael Marxen
- Department of Psychiatry and PsychotherapyTechnische Universität DresdenDresdenGermany
| | - Marcus W. Meinhardt
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Andreas Meyer‐Lindenberg
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Christiane Montag
- Department of Psychiatry and PsychotherapyCharité Campus St. Hedwig HospitalBerlinGermany
| | - Christian P. Müller
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Department of Psychiatry and PsychotherapyUniversity Clinic, Friedrich‐Alexander‐University of Erlangen‐NürnbergErlangenGermany
| | - Wolfgang E. Nagel
- Center for Information Services and High Performance ComputingDresdenGermany
| | - Ana M. M. Oliveria
- Department of Molecular and Cellular Cognition Research, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - David Owald
- Institute of NeurophysiologyCharité – Universitätsmedizin BerlinBerlinGermany
| | - Maximilian Pilhatsch
- Department of Psychiatry and PsychotherapyTechnische Universität DresdenDresdenGermany
| | - Josef Priller
- Department of Psychiatry and PsychotherapyTechnical University of MunichMunichGermany
- German Center for Mental Health (DZPG), Partner Site Munich‐AugsburgGermany
| | - Michael A. Rapp
- Social and Preventive Medicine, Research Area Cognitive SciencesUniversity of PotsdamPotsdamGermany
- German Center for Mental Health (DZPG), Partner Site Berlin‐PotsdamBerlinGermany
| | - Markus Reichert
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Department of eHealth and Sports Analytics, Faculty of Sport ScienceRuhr University BochumBochumGermany
| | - Stephan Ripke
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Kerstin Ritter
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Nina Romanczuk‐Seiferth
- Clinical Psychology and Psychotherapy, Department of PsychologyMSB Medical School BerlinBerlinGermany
| | | | - Emanuel Schwarz
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Hector Institute for Artificial Intelligence in Psychiatry, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Sarah Schwöbel
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Michael N. Smolka
- Department of Psychiatry and PsychotherapyTechnische Universität DresdenDresdenGermany
| | - Surjo R. Soekadar
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Wolfgang H. Sommer
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Bethanien Hospital for Psychiatry, Psychosomatics and PsychotherapyGreifswaldGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Ann‐Kathrin Stock
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Andreas Ströhle
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Heike Tost
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- German Center for Mental Health (DZPG), Partner Site Mannheim‐Heidelberg‐UlmGermany
| | - Sabine Vollstädt‐Klein
- Department of Addictive Behavior and Addiction MedicineCentral Institute of Mental HealthMannheimGermany
- Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty of MannheimUniversity of HeidelbergMannheimGermany
| | - Henrik Walter
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
| | - Tina Waschke
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Stephanie H. Witt
- Department of Genetic Epidemiology in Psychiatry, ZIPP BiobankCentral Institute of Mental Health, Medical Faculty MannheimMannheimGermany
| | - Andreas Heinz
- Department of Psychiatry and NeurosciencesCampus Charité MitteBerlinGermany
- German Center for Mental Health (DZPG), Partner Site Berlin‐PotsdamBerlinGermany
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Timme NM, Ardinger CE, Weir SDC, Zelaya-Escobar R, Kruger R, Lapish CC. Non-consummatory behavior signals predict aversion-resistant alcohol drinking in head-fixed mice. Neuropharmacology 2024; 242:109762. [PMID: 37871677 PMCID: PMC10872650 DOI: 10.1016/j.neuropharm.2023.109762] [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: 07/17/2023] [Revised: 10/05/2023] [Accepted: 10/12/2023] [Indexed: 10/25/2023]
Abstract
A key facet of alcohol use disorder is continuing to drink alcohol despite negative consequences (so called "aversion-resistant drinking"). In this study, we sought to assess the degree to which head-fixed mice exhibit aversion-resistant drinking and to leverage behavioral analysis techniques available in head-fixture to relate non-consummatory behaviors to aversion-resistant drinking. We assessed aversion-resistant drinking in head-fixed female and male C57BL/6 J mice. We adulterated 20% (v/v) alcohol with varying concentrations of the bitter tastant quinine to measure the degree to which mice would continue to drink despite this aversive stimulus. We recorded high-resolution video of the mice during head-fixed drinking, tracked body parts with machine vision tools, and analyzed body movements in relation to consumption. Female and male head-fixed mice exhibited heterogenous levels of aversion-resistant drinking. Additionally, non-consummatory behaviors, such as paw movement and snout movement, were related to the intensity of aversion-resistant drinking. These studies demonstrate that head-fixed mice exhibit aversion-resistant drinking and that non-consummatory behaviors can be used to assess perceived aversiveness in this paradigm. Furthermore, these studies lay the groundwork for future experiments that will utilize advanced electrophysiological techniques to record from large populations of neurons during aversion-resistant drinking to understand the neurocomputational processes that drive this clinically relevant behavior. This article is part of the Special Issue on "PFC circuit function in psychiatric disease and relevant models".
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Affiliation(s)
- Nicholas M Timme
- Department of Psychology, Indiana University - Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA.
| | - Cherish E Ardinger
- Department of Psychology, Indiana University - Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Seth D C Weir
- Department of Psychology, Indiana University - Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Rachel Zelaya-Escobar
- Department of Psychology, Indiana University - Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Rachel Kruger
- Department of Psychology, Indiana University - Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Christopher C Lapish
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, 635 Barnhill Drive, MSB 5035, Indianapolis, IN, 46202, USA; Stark Neuroscience Institute, Indiana University School of Medicine, 320 W. 15th St, NB 414, Indianapolis, IN, 46202, USA
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3
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Reinwald JR, Schmitz CN, Skorodumov I, Kuchar M, Weber-Fahr W, Spanagel R, Meinhardt MW. Psilocybin-induced default mode network hypoconnectivity is blunted in alcohol-dependent rats. Transl Psychiatry 2023; 13:392. [PMID: 38097569 PMCID: PMC10721862 DOI: 10.1038/s41398-023-02690-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/15/2023] [Accepted: 11/27/2023] [Indexed: 12/17/2023] Open
Abstract
Alcohol Use Disorder (AUD) adversely affects the lives of millions of people, but still lacks effective treatment options. Recent advancements in psychedelic research suggest psilocybin to be potentially efficacious for AUD. However, major knowledge gaps remain regarding (1) psilocybin's general mode of action and (2) AUD-specific alterations of responsivity to psilocybin treatment in the brain that are crucial for treatment development. Here, we conducted a randomized, placebo-controlled crossover pharmaco-fMRI study on psilocybin effects using a translational approach with healthy rats and a rat model of alcohol relapse. Psilocybin effects were quantified with resting-state functional connectivity using data-driven whole-brain global brain connectivity, network-based statistics, graph theory, hypothesis-driven Default Mode Network (DMN)-specific connectivity, and entropy analyses. Results demonstrate that psilocybin induced an acute wide-spread decrease in different functional connectivity domains together with a distinct increase of connectivity between serotonergic core regions and cortical areas. We could further provide translational evidence for psilocybin-induced DMN hypoconnectivity reported in humans. Psilocybin showed an AUD-specific blunting of DMN hypoconnectivity, which strongly correlated to the alcohol relapse intensity and was mainly driven by medial prefrontal regions. In conclusion, our results provide translational validity for acute psilocybin-induced neural effects in the rodent brain. Furthermore, alcohol relapse severity was negatively correlated with neural responsivity to psilocybin treatment. Our data suggest that a clinical standard dose of psilocybin may not be sufficient to treat severe AUD cases; a finding that should be considered for future clinical trials.
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Affiliation(s)
- Jonathan R Reinwald
- Research Group Translational Imaging, Department of Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
- Research Group Systems Neuroscience and Mental Health, Department of Psychiatry and Psychotherapy, University Medical Center Mainz, Johannes Gutenberg University, Mainz, Germany
| | - Christian N Schmitz
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Ivan Skorodumov
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Martin Kuchar
- Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Prague, Czech Republic
- Psychedelics Research Centre, National Institute of Mental Health, Klecany, Czech Republic
| | - Wolfgang Weber-Fahr
- Research Group Translational Imaging, Department of Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Rainer Spanagel
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany.
| | - Marcus W Meinhardt
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany.
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany.
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Timme NM, Ardinger CE, Weir SDC, Zelaya-Escobar R, Kruger R, Lapish CC. Non-Consummatory Behavior Signals Predict Aversion-Resistant Alcohol Drinking in Head-Fixed Mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.20.545767. [PMID: 37873153 PMCID: PMC10592797 DOI: 10.1101/2023.06.20.545767] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A key facet of alcohol use disorder is continuing to drink alcohol despite negative consequences (so called "aversion-resistant drinking"). In this study, we sought to assess the degree to which head-fixed mice exhibit aversion-resistant drinking and to leverage behavioral analysis techniques available in head-fixture to relate non-consummatory behaviors to aversion-resistant drinking. We assessed aversion-resistant drinking in head-fixed female and male C57BL/6J mice. We adulterated 20% (v/v) alcohol with varying concentrations of the bitter tastant quinine to measure the degree to which mice would continue to drink despite this aversive stimulus. We recorded high-resolution video of the mice during head-fixed drinking, tracked body parts with machine vision tools, and analyzed body movements in relation to consumption. Female and male head-fixed mice exhibited heterogenous levels of aversion-resistant drinking. Additionally, non-consummatory behaviors, such as paw movement and snout movement, were related to the intensity of aversion-resistant drinking. These studies demonstrate that head-fixed mice exhibit aversion-resistant drinking and that non-consummatory behaviors can be used to assess perceived aversiveness in this paradigm. Furthermore, these studies lay the groundwork for future experiments that will utilize advanced electrophysiological techniques to record from large populations of neurons during aversion-resistant drinking to understand the neurocomputational processes that drive this clinically relevant behavior.
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Affiliation(s)
- Nicholas M. Timme
- Department of Psychology, Indiana University – Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Cherish E. Ardinger
- Department of Psychology, Indiana University – Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Seth D. C. Weir
- Department of Psychology, Indiana University – Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Rachel Zelaya-Escobar
- Department of Psychology, Indiana University – Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Rachel Kruger
- Department of Psychology, Indiana University – Purdue University Indianapolis, 402 N. Blackford St, LD 124, Indianapolis, IN, 46202, USA
| | - Christopher C. Lapish
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, 635 Barnhill Drive, MSB 5035, Indianapolis, IN, 46202, USA
- Stark Neuroscience Institute, Indiana University School of Medicine, 320 W. 15 St, NB 414, Indianapolis, IN 46202, USA
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Foo JC, Skorodumov I, Spanagel R, Meinhardt MW. Sex- and age-specific effects on the development of addiction and compulsive-like drinking in rats. Biol Sex Differ 2023; 14:44. [PMID: 37420305 PMCID: PMC10327342 DOI: 10.1186/s13293-023-00529-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND Biological factors are known to influence disease trajectories and treatment effectiveness in alcohol addiction and preclinical and clinical evidence suggests that sex is an important factor influencing disease dynamics in alcohol dependence. Another critical factor is age at first intoxicating drink, which has been identified as a risk factor for later alcohol binging. Preclinical research allows prospective monitoring of rodents throughout the lifespan, providing very detailed information that cannot be acquired in humans. Lifetime monitoring in rodents can be conducted under highly controlled conditions, during which one can systematically introduce multiple biological and environmental factors that impact behaviors of interest. METHODS Here, we used the alcohol deprivation effect (ADE) rat model of alcohol addiction in a computerized drinkometer system, acquiring high-resolution data to study changes over the course of addictive behavior as well as compulsive-like drinking in cohorts of adolescent vs. adult as well as male vs. female rats. RESULTS Female rats drank more alcohol than male rats during the whole experiment, drinking much more weak alcohol (5%) and similar amounts of stronger alcohol solutions (10%, 20%); female rats also consumed more alcohol than male rats during quinine taste adulteration. Increased consumption in females compared to males was driven by larger access sizes of alcohol. Differences in circadian patterns of movement were observed between groups. Early age of onset of drinking (postnatal day 40) in male rats had surprisingly little impact on the development of drinking behavior and compulsivity (quinine taste adulteration) when compared to rats that started drinking during early adulthood (postnatal day 72). CONCLUSIONS Our results suggest that there are sex-specific drinking patterns, not only in terms of total amount consumed, but specifically in terms of solution preference and access size. These findings provide a better understanding of sex and age factors involved in the development of drinking behavior, and can inform the preclinical development of models of addiction, drug development and exploration of options for new treatments.
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Affiliation(s)
- Jerome C. Foo
- Department of Genetic Epidemiology in Psychiatry, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
- Institute for Psychopharmacology, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Ivan Skorodumov
- Institute for Psychopharmacology, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Rainer Spanagel
- Institute for Psychopharmacology, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Marcus W. Meinhardt
- Institute for Psychopharmacology, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
- Department of Molecular Neuroimaging, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
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Wong K, Wang ZC, Patarino M, Baskin B, Lee SJ, Schindler AG. Socially Integrated Polysubstance (SIP) system: An open-source solution for continuous monitoring of polysubstance fluid intake in group housed mice. ADDICTION NEUROSCIENCE 2023; 7:10.1016/j.addicn.2023.100101. [PMID: 37560335 PMCID: PMC10411158 DOI: 10.1016/j.addicn.2023.100101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Despite impressive results from neuroscience research using rodent models, there is a paucity of successful translation from preclinical findings to effective pharmacological interventions for treatment of substance use disorder (SUD) in humans. One potential reason for lack of translation from animal models is difficulty in accurately replicating the lived experience of people who use drugs. Aspects of substance use in humans that are often not modeled in animal research include but are not limited to 1) voluntary timing and frequency of substance intake, 2) social environment during substance use, and 3) access to multiple substances and multiple concentrations of each substance. Critically, existing commercial equipment that allows for social housing and voluntary polysubstance use (e.g., home cage monitoring system) is prohibitively expensive and no open-source solutions exist. With these goals in mind, here we detail development of the Socially Integrated Polysubstance (SIP) system, an open-source and lower cost solution that allows for group housed rodents to self-administer multiple substances with continuous monitoring and measurement. In our current setup, each SIP cage contains four drinking stations, and each station is equipped with a RFID sensor and sipper tube connected to a unique fluid reservoir. Using this system, we can track which animal (implanted with unique RFID transponder) visits which drinking location and the amount they drink during each visit (in 20 ul increments). Using four flavors of Kool-Aid, here we demonstrate that the SIP system is reliable and accurate with high temporal resolution for long term monitoring of substance intake and behavior tracking in a social environment. The SIP cage system is a first step towards designing an accessible and flexible rodent model of substance use that more closely resembles the experience of people who use drugs.
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Affiliation(s)
- Katrina Wong
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA 98195
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Ziheng Christina Wang
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Makenzie Patarino
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA 98195
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, USA 98195
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Britahny Baskin
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA 98195
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, USA 98195
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Suhjung Janet Lee
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Abigail G. Schindler
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA 98195
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, USA 98195
- VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
- VA Northwest Mental Illness Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
- Department of Medicine, University of Washington, Seattle, WA 98195, USA
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Vengeliene V, Spanagel R. mGlu2 mechanism-based interventions to treat alcohol relapse. Front Pharmacol 2022; 13:985954. [PMID: 36188569 PMCID: PMC9520163 DOI: 10.3389/fphar.2022.985954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Recently we identified a deficiency in metabotropic glutamate receptor 2 (mGlu2) function in the corticoaccumbal pathway, as a common pathological mechanism underlying alcohol-seeking and relapse behavior. Based on this mechanism, we hypothesized that mGlu2/3 agonists and mGlu2 positive allosteric modulators (PAMs) may be effective in reducing relapse-like behavior. Two mGlu2/3 agonists, LY379268 and LY354740 (a structural analog of LY379268 six-fold more potent in activating mGlu2 over mGluR3), were tested in a well-established rat model of relapse, the alcohol deprivation effect (ADE) with repeated deprivation phases. Since these agonists do not readily discriminate between contributions of mGlu2 and mGluR3, we also tested LY487379, a highly specific PAM that potentiates the effect of glutamate on the mGlu2 with less specificity on other mGlu receptor subtypes. Both LY379268 and LY354740 significantly and dose-dependently reduced the expression of the ADE. No significant changes in water intake, body weight and locomotor activity were observed. Importantly, repeated administration of mGlu2/3 agonist did not lead to tolerance development. mGlu2 PAM LY487379 treatment significantly reduced expression of the ADE in both male and female rats. Combination treatment of mGlu2/3 agonist and PAM had similar effect on relapse-like drinking to that seen in mGlu2/3 agonist treatment alone. Together with other preclinical data showing that PAMs can reduce alcohol-seeking behavior we conclude that mGlu2 PAMs should be considered for clinical trials in alcohol-dependent patients.
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Affiliation(s)
- Valentina Vengeliene
- Institute of Psychopharmacology, Central Institute of Mental Health, Faculty of Medicine Mannheim, University of Heidelberg, Heidelberg, Germany
- Department of Neurobiology and Biophysics, Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Rainer Spanagel
- Institute of Psychopharmacology, Central Institute of Mental Health, Faculty of Medicine Mannheim, University of Heidelberg, Heidelberg, Germany
- *Correspondence: Rainer Spanagel,
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