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Vlkolinsky R, Khom S, Vozella V, Bajo M, Roberto M. Withdrawal from chronic alcohol impairs the serotonin-mediated modulation of GABAergic transmission in the infralimbic cortex in male rats. Neurobiol Dis 2024; 199:106590. [PMID: 38996987 DOI: 10.1016/j.nbd.2024.106590] [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: 05/03/2024] [Revised: 07/01/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024] Open
Abstract
The infralimbic cortex (IL) is part of the medial prefrontal cortex (mPFC), exerting top-down control over structures that are critically involved in the development of alcohol use disorder (AUD). Activity of the IL is tightly controlled by γ-aminobutyric acid (GABA) transmission, which is susceptible to chronic alcohol exposure and withdrawal. This inhibitory control is regulated by various neuromodulators, including 5-hydroxytryptamine (5-HT; serotonin). We used chronic intermittent ethanol vapor inhalation exposure, a model of AUD, in male Sprague-Dawley rats to induce alcohol dependence (Dep) followed by protracted withdrawal (WD; 2 weeks) and performed ex vivo electrophysiology using whole-cell patch clamp to study GABAergic transmission in layer V of IL pyramidal neurons. We found that WD increased frequencies of spontaneous inhibitory postsynaptic currents (sIPSCs), whereas miniature IPSCs (mIPSCs; recorded in the presence of tetrodotoxin) were unaffected by either Dep or WD. The application of 5-HT (50 μM) increased sIPSC frequencies and amplitudes in naive and Dep rats but reduced sIPSC frequencies in WD rats. Additionally, 5-HT2A receptor antagonist M100907 and 5-HT2C receptor antagonist SB242084 reduced basal GABA release in all groups to a similar extent. The blockage of either 5-HT2A or 5-HT2C receptors in WD rats restored the impaired response to 5-HT, which then resembled responses in naive rats. Our findings expand our understanding of synaptic inhibition in the IL in AUD, indicating that antagonism of 5-HT2A and 5-HT2C receptors may restore GABAergic control over IL pyramidal neurons. SIGNIFICANCE STATEMENT: Impairment in the serotonergic modulation of GABAergic inhibition in the medial prefrontal cortex contributes to alcohol use disorder (AUD). We used a well-established rat model of AUD and ex vivo whole-cell patch-clamp electrophysiology to characterize the serotonin modulation of GABAergic transmission in layer V infralimbic (IL) pyramidal neurons in ethanol-naive, ethanol-dependent (Dep), and ethanol-withdrawn (WD) male rats. We found increased basal inhibition following WD from chronic alcohol and altered serotonin modulation. Exogenous serotonin enhanced GABAergic transmission in naive and Dep rats but reduced it in WD rats. 5-HT2A and 5-HT2C receptor blockage in WD rats restored the typical serotonin-mediated enhancement of GABAergic inhibition. Our findings expand our understanding of synaptic inhibition in the infralimbic neurons in AUD.
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Affiliation(s)
- Roman Vlkolinsky
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
| | - Sophia Khom
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Pharmaceutical Sciences, University of Vienna, Vienna, 1090, Austria.
| | - Valentina Vozella
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
| | - Michal Bajo
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
| | - Marisa Roberto
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
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Asefi MB, Heidari A, Hajikarim-Hamedani A, Mousavi Z, Ashabi G, Sadat-Shirazi MS, Zarrindast MR. Preconception ethanol exposure changes anxiety, depressive and checking-like behavior and alter the expression levels of MAO-B in male offspring. Neurotoxicol Teratol 2024; 104:107367. [PMID: 38866258 DOI: 10.1016/j.ntt.2024.107367] [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: 03/17/2024] [Revised: 05/18/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
Alcohol use, which alters the epigenome, increases the probability that it could affect subsequent generations, even if they were never directly exposed to ethanol or even in utero. We explored the effects of parental ethanol exposure before conception on behavioral changes in the offspring. Considering the role of Monoamine oxidase-B (MAO-B) in dopamine turnover in the prefrontal cortex (PFC) and its influence on behavior, and taking into account that ethanol exposure could alter MAO-B, we assessed the protein levels in the offspring. Male and female rats were exposed to ethanol for 30 days and then allowed ten days of abstinence. Afterward, they were mated with either control or ethanol-exposed rats. The F1 and F2 male offspring underwent tests to assess behavioral changes. Additionally, the levels of MAO-B in the PFC were evaluated. Results revealed that in the F1, anxiety increased only in the bi-parental ethanol-exposed male offspring in the elevated plus maze test (p < 0.05), while depressive-like behavior rose only in maternal and bi-parental ethanol-exposed offspring (p < 0.01). However, compulsive-like behavior increased in all ethanol-exposed offspring (p < 0.01). No significant phenotypic changes were observed in the F2. The levels of MAO-B in the PFC increased in the maternal (p < 0.05) and bi-parental ethanol-exposed offspring (p < 0.01). Our study demonstrates that parental ethanol exposure, even in the days preceding mating, adversely affects behaviors and induces molecular changes in the brain. Given these findings, it becomes imperative to monitor children exposed to parental (especially maternal) ethanol for the prevention of mental disorders.
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Affiliation(s)
- Mohammad Basir Asefi
- Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
| | - Amirhossein Heidari
- Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | | | - Zahra Mousavi
- Department of Pharmacology-Toxicology, Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Iran
| | - Ghorbangol Ashabi
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad-Reza Zarrindast
- Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Patel RR, Gandhi P, Spencer K, Salem NA, Erikson CM, Borgonetti V, Vlkolinsky R, Rodriguez L, Nadav T, Bajo M, Roberts AJ, Dayne Mayfield R, Roberto M. Functional and morphological adaptation of medial prefrontal corticotropin releasing factor receptor 1-expressing neurons in male mice following chronic ethanol exposure. Neurobiol Stress 2024; 31:100657. [PMID: 38983690 PMCID: PMC11231756 DOI: 10.1016/j.ynstr.2024.100657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/13/2024] [Accepted: 06/15/2024] [Indexed: 07/11/2024] Open
Abstract
Chronic ethanol dependence and withdrawal activate corticotropin releasing factor (CRF)-containing GABAergic neurons in the medial prefrontal cortex (mPFC), which tightly regulate glutamatergic pyramidal neurons. Using male CRF1:GFP reporter mice, we recently reported that CRF1-expressing (mPFCCRF1+) neurons predominantly comprise mPFC prelimbic layer 2/3 pyramidal neurons, undergo profound adaptations following chronic ethanol exposure, and regulate anxiety and conditioned rewarding effects of ethanol. To explore the effects of acute and chronic ethanol exposure on glutamate transmission, the impact of chronic alcohol on spine density and morphology, as well as persistent changes in dendritic-related gene expression, we employed whole-cell patch-clamp electrophysiology, diOlistic labeling for dendritic spine analysis, and dendritic gene expression analysis to further characterize mPFCCRF1+ and mPFCCRF1- prelimbic layer 2/3 pyramidal neurons. We found increased glutamate release in mPFCCRF1+ neurons with ethanol dependence, which recovered following withdrawal. In contrast, we did not observe significant changes in glutamate transmission in neighboring mPFCCRF1- neurons. Acute application of 44 mM ethanol significantly reduced glutamate release onto mPFCCRF1+ neurons, which was observed across all treatment groups. However, this sensitivity to acute ethanol was only evident in mPFCCRF1- neurons during withdrawal. In line with alterations in glutamate transmission, we observed a decrease in total spine density in mPFCCRF1+ neurons during dependence, which recovered following withdrawal, while again no changes were observed in mPFCCRF- neurons. Given the observed decreases in mPFCCRF1+ stubby spines during withdrawal, we then identified persistent changes at the dendritic gene expression level in mPFCCRF1+ neurons following withdrawal that may underlie these structural adaptations. Together, these findings highlight the varying responses of mPFCCRF1+ and mPFCCRF1- cell-types to acute and chronic ethanol exposure, as well as withdrawal, revealing specific functional, morphological, and molecular adaptations that may underlie vulnerability to ethanol and the lasting effects of ethanol dependence.
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Affiliation(s)
- Reesha R Patel
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Pauravi Gandhi
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Kathryn Spencer
- Core Microscopy Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Nihal A Salem
- Department of Neuroscience, The University of Texas at Austin, Austin, TX, 78712, USA
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Chloe M Erikson
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Vittoria Borgonetti
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Roman Vlkolinsky
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Larry Rodriguez
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Tali Nadav
- Animal Models Core Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Michal Bajo
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Amanda J Roberts
- Animal Models Core Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - R Dayne Mayfield
- Department of Neuroscience, The University of Texas at Austin, Austin, TX, 78712, USA
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Marisa Roberto
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA, 92037, USA
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Briken P, Bőthe B, Carvalho J, Coleman E, Giraldi A, Kraus SW, Lew-Starowicz M, Pfaus JG. Assessment and treatment of compulsive sexual behavior disorder: a sexual medicine perspective. Sex Med Rev 2024; 12:355-370. [PMID: 38529667 PMCID: PMC11214846 DOI: 10.1093/sxmrev/qeae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 03/27/2024]
Abstract
INTRODUCTION The addition of compulsive sexual behavior disorder (CSBD) into the ICD-11 chapter on mental, behavioral, or neurodevelopmental disorders has greatly stimulated research and controversy around compulsive sexual behavior, or what has been termed "hypersexual disorder," "sexual addiction," "porn addiction," "sexual compulsivity," and "out-of-control sexual behavior." OBJECTIVES To identify where concerns exist from the perspective of sexual medicine and what can be done to resolve them. METHODS A scientific review committee convened by the International Society for Sexual Medicine reviewed pertinent literature and discussed clinical research and experience related to CSBD diagnoses and misdiagnoses, pathologizing nonheteronormative sexual behavior, basic research on potential underlying causes of CSBD, its relationship to paraphilic disorder, and its potential sexual health consequences. The panel used a modified Delphi method to reach consensus on these issues. RESULTS CSBD was differentiated from other sexual activity on the basis of the ICD-11 diagnostic criteria, and issues regarding sexual medicine and sexual health were identified. Concerns were raised about self-labeling processes, attitudes hostile to sexual pleasure, pathologizing of nonheteronormative sexual behavior and high sexual desire, mixing of normative attitudes with clinical distress, and the belief that masturbation and pornography use represent "unhealthy" sexual behavior. A guide to CSBD case formulation and care/treatment recommendations was proposed. CONCLUSIONS Clinical sexologic and sexual medicine expertise for the diagnosis and treatment of CSBD in the psychiatric-psychotherapeutic context is imperative to differentiate and understand the determinants and impact of CSBD and related "out-of-control sexual behaviors" on mental and sexual well-being, to detect forensically relevant and nonrelevant forms, and to refine best practices in care and treatment. Evidence-based, sexual medicine-informed therapies should be offered to achieve a positive and respectful approach to sexuality and the possibility of having pleasurable and safe sexual experiences.
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Affiliation(s)
- Peer Briken
- Institute for Sex Research, Sexual Medicine, and Forensic Psychiatry, University Medical Center, Hamburg-Eppendorf, Hamburg 20251, Germany
| | - Beáta Bőthe
- Department of Psychology, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Centre de Recherche Interdisciplinaire Sur Les Problèmes Conjugaux Et Les Agressions Sexuelles, Montréal, QC H3C 3J7, Canada
| | - Joana Carvalho
- William James Center for Research, Department of Education and Psychology, University of Aveiro, Aveiro 3810-193, Portugal
| | - Eli Coleman
- Eli Coleman Institute for Sexual and Gender Health, University of Minnesota, Minneapolis, MN 55454, United States
| | - Annamaria Giraldi
- Sexological Clinic, Mental Health Center, Copenhagen University Hospital, Mental Health Services, Copenhagen CPH 2200, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Shane W Kraus
- Department of Psychology, University of Nevada Las Vegas, Las Vegas, NV 5030, United States
| | - Michał Lew-Starowicz
- Department of Psychiatry, Centre of Postgraduate Medical Education, Warsaw 01-809, Poland
| | - James G Pfaus
- Center for Sexual Health and Intervention, Czech National Institute of Mental Health, Klecany 25067, Czech Republic
- Department of Psychology and Life Sciences, Faculty of Humanities, Charles University, Prague 18200, Czech Republic
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Steiner NL, Purohit DC, Tiefenthaler CM, Mandyam CD. Abstinence and Fear Experienced during This Period Produce Distinct Cortical and Hippocampal Adaptations in Alcohol-Dependent Rats. Brain Sci 2024; 14:431. [PMID: 38790410 PMCID: PMC11118749 DOI: 10.3390/brainsci14050431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/14/2024] [Accepted: 04/20/2024] [Indexed: 05/26/2024] Open
Abstract
Previous studies demonstrate that ethanol dependence induced by repeating cycles of chronic intermittent ethanol vapor exposure (CIE) followed by protracted abstinence produces significant gray matter damage via myelin dysfunction in the rodent medial prefrontal cortex (mPFC) and alterations in neuronal excitability in the mPFC and the dentate gyrus (DG) of the hippocampus. Specifically, abstinence-induced neuroadaptations have been associated with persistent elevated relapse to drinking. The current study evaluated the effects of forced abstinence for 1 day (d), 7 d, 21 d, and 42 d following seven weeks of CIE on synaptic plasticity proteins in the mPFC and DG. Immunoblotting revealed reduced expression of CaMKII in the mPFC and enhanced expression of GABAA and CaMKII in the DG at the 21 d time point, and the expression of the ratio of GluN2A/2B subunits did not change at any of the time points studied. Furthermore, cognitive performance via Pavlovian trace fear conditioning (TFC) was evaluated in 3 d abstinent rats, as this time point is associated with negative affect. In addition, the expression of the ratio of GluN2A/2B subunits and a 3D structural analysis of neurons in the mPFC and DG were evaluated in 3 d abstinent rats. Behavioral analysis revealed faster acquisition of fear responses and reduced retrieval of fear memories in CIE rats compared to controls. TFC produced hyperplasticity of pyramidal neurons in the mPFC under control conditions and this effect was not evident or blunted in abstinent rats. Neurons in the DG were unaltered. TFC enhanced the GluN2A/2B ratio in the mPFC and reduced the ratio in the DG and was not altered by abstinence. These findings indicate that forced abstinence from CIE produces distinct and divergent alterations in plasticity proteins in the mPFC and DG. Fear learning-induced changes in structural plasticity and proteins contributing to it were more profound in the mPFC during forced abstinence.
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Affiliation(s)
- Noah L. Steiner
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (N.L.S.)
| | | | - Casey M. Tiefenthaler
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA;
| | - Chitra D. Mandyam
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (N.L.S.)
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA;
- Department of Anesthesiology, University of California San Diego, San Diego, CA 92093, USA
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Melugin PR, Nolan SO, Kandov E, Ferrara CF, Farahbakhsh ZZ, Siciliano CA. Medial prefrontal dopamine dynamics reflect allocation of selective attention. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.04.583245. [PMID: 38496533 PMCID: PMC10942305 DOI: 10.1101/2024.03.04.583245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The mesocortical dopamine system is comprised of midbrain dopamine neurons that predominantly innervate the medial prefrontal cortex (mPFC) and exert a powerful neuromodulatory influence over this region 1,2 . mPFC dopamine activity is thought to be critical for fundamental neurobiological processes including valence coding and decision-making 3,4 . Despite enduring interest in this pathway, the stimuli and conditions that engage mPFC dopamine release have remained enigmatic due to inherent limitations in conventional methods for dopamine monitoring which have prevented real-time in vivo observation 5 . Here, using a fluorescent dopamine sensor enabling time-resolved recordings of cortical dopamine activity in freely behaving mice, we reveal the coding properties of this system and demonstrate that mPFC dopamine dynamics conform to a selective attention signal. Contrary to the long-standing theory that mPFC dopamine release preferentially encodes aversive and stressful events 6-8 , we observed robust dopamine responses to both appetitive and aversive stimuli which dissipated with increasing familiarity irrespective of stimulus intensity. We found that mPFC dopamine does not evolve as a function of learning but displays striking temporal precedence with second-to-second changes in behavioral engagement, suggesting a role in allocation of attentional resources. Systematic manipulation of attentional demand revealed that quieting of mPFC dopamine signals the allocation of attentional resources towards an expected event which, upon detection triggers a sharp dopamine transient marking the transition from decision-making to action. The proposed role of mPFC dopamine as a selective attention signal is the first model based on direct observation of time-resolved dopamine dynamics and reconciles decades of competing theories.
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Xiao T, Roland A, Chen Y, Guffey S, Kash T, Kimbrough A. A role for circuitry of the cortical amygdala in excessive alcohol drinking, withdrawal, and alcohol use disorder. Alcohol 2024:S0741-8329(24)00034-X. [PMID: 38447789 DOI: 10.1016/j.alcohol.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/30/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024]
Abstract
Alcohol use disorder (AUD) poses a significant public health challenge. Individuals with AUD engage in chronic and excessive alcohol consumption, leading to cycles of intoxication, withdrawal, and craving behaviors. This review explores the involvement of the cortical amygdala (CoA), a cortical brain region that has primarily been examined in relation to olfactory behavior, in the expression of alcohol dependence and excessive alcohol drinking. While extensive research has identified the involvement of numerous brain regions in AUD, the CoA has emerged as a relatively understudied yet promising candidate for future study. The CoA plays a vital role in rewarding and aversive signaling and olfactory-related behaviors and has recently been shown to be involved in alcohol-dependent drinking in mice. The CoA projects directly to brain regions that are critically important for AUD, such as the central amygdala, bed nucleus of the stria terminalis, and basolateral amygdala. These projections may convey key modulatory signaling that drives excessive alcohol drinking in alcohol-dependent subjects. This review summarizes existing knowledge on the structure and connectivity of the CoA and its potential involvement in AUD. Understanding the contribution of this region to excessive drinking behavior could offer novel insights into the etiology of AUD and potential therapeutic targets.
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Affiliation(s)
- Tiange Xiao
- Purdue University, Department of Basic Medical Sciences, College of Veterinary Medicine
| | - Alison Roland
- Bowles Center for Alcohol Studies, University of North Carolina School of Medicine, Chapel Hill, NC, USA; Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Yueyi Chen
- Purdue University, Department of Basic Medical Sciences, College of Veterinary Medicine
| | - Skylar Guffey
- Purdue University, Department of Basic Medical Sciences, College of Veterinary Medicine
| | - Thomas Kash
- Bowles Center for Alcohol Studies, University of North Carolina School of Medicine, Chapel Hill, NC, USA; Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Adam Kimbrough
- Purdue University, Department of Basic Medical Sciences, College of Veterinary Medicine; Purdue Institute for Integrative Neuroscience; Purdue University, Weldon School of Biomedical Engineering; Purdue Institute of Inflammation, Immunology, and Infectious Disease.
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De Clerck M, Manguin M, Henkous N, d’Almeida MN, Beracochea D, Mons N. Chronic alcohol-induced long-lasting working memory deficits are associated with altered histone H3K9 dimethylation in the prefrontal cortex. Front Behav Neurosci 2024; 18:1354390. [PMID: 38495426 PMCID: PMC10941761 DOI: 10.3389/fnbeh.2024.1354390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/19/2024] [Indexed: 03/19/2024] Open
Abstract
Introduction Epigenetic modifications have emerged as key contributors to the enduring behavioral, molecular and epigenetic neuroadaptations during withdrawal from chronic alcohol exposure. The present study investigated the long-term consequences of chronic alcohol exposure on spatial working memory (WM) and associated changes of transcriptionally repressive histone H3 lysine 9 dimethylation (H3K9me2) in the prefrontal cortex (PFC). Methods Male C57BL/6 mice were allowed free access to either 12% (v/v) ethanol for 5 months followed by a 3-week abstinence period or water. Spatial WM was assessed through the spontaneous alternation T-maze test. Alcoholic and water mice received daily injections of GABAB agonist baclofen or saline during alcohol fading and early withdrawal. Global levels of histone modifications were determined by immunohistochemistry. Results Withdrawal mice displayed WM impairments along with reduced prefrontal H3K9me2 levels, compared to water-drinking mice. The withdrawal-induced decrease of H3K9me2 occurred concomitantly with increased level of permissive H3K9 acetylation (H3K9ac) in the PFC. Baclofen treatment rescued withdrawal-related WM deficits and fully restored prefrontal H3K9me2 and H3K9ac. Alcohol withdrawal induced brain region-specific changes of H3K9me2 and H3K9ac after testing, with significant decreases of both histone marks in the dorsal hippocampus and no changes in the amygdala and dorsal striatum. Furthermore, the magnitude of H3K9me2 in the PFC, but not the hippocampus, significantly and positively correlated with individual WM performances. No correlation was observed between H3K9ac and behavioral performance. Results also indicate that pre-testing intraperitoneal injection of UNC0642, a selective inhibitor of histone methyltransferase G9a responsible for H3K9me2, led to WM impairments in water-drinking and withdrawal-baclofen mice. Collectively, our results demonstrate that alcohol withdrawal induced brain-region specific alterations of H3K9me2 and H3K9ac, an effect that persisted for at least three weeks after cessation of chronic alcohol intake. Conclusion The findings suggest a role for long-lasting decreased H3K9me2 specifically in the PFC in the persistent WM impairments related to alcohol withdrawal.
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Psarianos A, Chryssanthopoulos C, Theocharis A, Paparrigopoulos T, Philippou A. Effects of a Two-Month Exercise Training Program on Concurrent Non-Opiate Substance Use in Opioid-Dependent Patients during Substitution Treatment. J Clin Med 2024; 13:941. [PMID: 38398255 PMCID: PMC10888880 DOI: 10.3390/jcm13040941] [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: 11/23/2023] [Revised: 01/14/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND This randomized controlled trial aimed to evaluate the effects of a two-month exercise intervention on the concurrent non-opiate substance use (alcohol, cocaine, cannabis, and benzodiazepines) in opioid users during their medication treatment. METHODS Ninety opioid users (41 females) in methadone and buprenorphine medication treatment were randomly divided into four groups: (a) buprenorphine experimental (BEX; n = 26, aged 41.9 ± 6.1 yrs); (b) buprenorphine control (BCON; n = 25, aged 41.9 ± 5.6 yrs); (c) methadone experimental (MEX; n = 20, aged 46.7 ± 6.6 yrs); and (d) methadone control (MCON; n = 19, aged 46.1 ± 7.5 yrs). The experimental groups (BEX and MEX) followed an aerobic exercise training program on a treadmill for 20 min at 70% HRmax, 3 days/week for 8 weeks. Socio-demographic, anthropometric, and clinical characteristics, as well as non-opioid drug use in days and quantity per week, were assessed before and after the intervention period. RESULTS Following the exercise training, the weekly non-opioid substance consumption (days) decreased (p < 0.05) in both exercise groups and was lower in BEX compared to MEX, while no differences were observed (p > 0.05) between the control groups (BCON vs. MCON) or compared to their baseline levels. Similarly, the daily amount of non-opiate substance intake was reduced (p < 0.05) post-training in BEX and MEX, whereas it did not differ (p > 0.05) in BCON and MCON compared to the baseline. CONCLUSIONS The two-month exercise intervention reduced the non-opioid drug use in both the methadone and buprenorphine substitution groups compared to the controls, suggesting that aerobic exercise training may be an effective strategy for treating patients with OUDs.
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Affiliation(s)
- Alexandros Psarianos
- 1st Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece; (A.P.); (T.P.)
- Greek Organization Against Drugs (OΚAΝA), 10433 Athens, Greece;
| | - Costas Chryssanthopoulos
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | | | - Thomas Paparrigopoulos
- 1st Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece; (A.P.); (T.P.)
| | - Anastassios Philippou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece;
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Maxwell JR, DiDomenico J, Roberts MH, Marquez LE, Rai R, Weinberg J, Jacobson SW, Stephen J, Bakhireva LN. Impact of low-level prenatal alcohol exposure and maternal stress on autonomic regulation. Pediatr Res 2024; 95:350-358. [PMID: 37674025 PMCID: PMC11089775 DOI: 10.1038/s41390-023-02799-5] [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: 02/28/2023] [Revised: 06/07/2023] [Accepted: 08/09/2023] [Indexed: 09/08/2023]
Abstract
BACKGROUND Prenatal alcohol exposure (PAE) impacts the neurodevelopment of the fetus, including the infant's ability to self-regulate. Heart rate variability (HRV), that is, the beat-to-beat variability in heart rate, is a non-invasive measurement that can indicate autonomic nervous system (ANS) function/dysfunction. METHODS The study consisted of a subset of our ENRICH-2 cohort: 80 participants (32 PAE and 48 Controls) who had completed three visits during pregnancy. The participants completed a comprehensive assessment of PAE and other substances throughout pregnancy and assessments for stress, anxiety, and depression in the third trimester. At 24 h of age, infant HRV was assessed in the hospital during the clinically indicated heel lance; 3- to 5-min HRV epochs were obtained during baseline, heel lancing, and recovery episodes. RESULTS Parameters of HRV differed in infants with PAE compared to Controls during the recovery phase of the heel lance (respiratory sinus arrhythmia (RSA) and high-frequency (HF), p < 0.05). Increased maternal stress was also strongly associated with abnormalities in RSA, HF, and low-frequency / high-frequency (LF/HF, p's < 0.05). CONCLUSIONS Alterations in ANS regulation associated with PAE and maternal stress may reflect abnormal development of the hypothalamic-pituitary-adrenal axis and have long term implications for infant responsiveness and self-regulation. IMPACT Previous studies have focused on effects of moderate to heavy prenatal alcohol exposure (PAE) on autonomic dysregulation, but little is known about the effects of lower levels of PAE on infant self-regulation and heart rate variability (HRV). Prenatal stress is another risk factor for autonomic dysregulation. Mild PAE impacts infant self-regulation, which can be assessed using HRV. However, the effect of prenatal stress is stronger than that of mild PAE or other mental health variables on autonomic dysregulation.
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Affiliation(s)
- Jessie R Maxwell
- Department of Pediatrics, University of New Mexico, Albuquerque, NM, Mexico.
- Department of Neurosciences, University of New Mexico, Albuquerque, NM, Mexico.
| | - Jared DiDomenico
- Substance Use Research and Education (SURE) Center, College of Pharmacy, University of New Mexico, Albuquerque, NM, Mexico
| | - Melissa H Roberts
- Substance Use Research and Education (SURE) Center, College of Pharmacy, University of New Mexico, Albuquerque, NM, Mexico
| | - Lidia Enriquez Marquez
- Substance Use Research and Education (SURE) Center, College of Pharmacy, University of New Mexico, Albuquerque, NM, Mexico
| | - Rajani Rai
- Substance Use Research and Education (SURE) Center, College of Pharmacy, University of New Mexico, Albuquerque, NM, Mexico
| | - Joanne Weinberg
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Sandra W Jacobson
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA
| | - Julia Stephen
- The Mind Research Network, a Division of Lovelace Biomedical Research Institute, University of New Mexico, Albuquerque, NM, Mexico
| | - Ludmila N Bakhireva
- Substance Use Research and Education (SURE) Center, College of Pharmacy, University of New Mexico, Albuquerque, NM, Mexico
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11
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Salem NA, Manzano L, Keist MW, Ponomareva O, Roberts AJ, Roberto M, Mayfield RD. Cell-type brain-region specific changes in prefrontal cortex of a mouse model of alcohol dependence. Neurobiol Dis 2024; 190:106361. [PMID: 37992784 PMCID: PMC10874299 DOI: 10.1016/j.nbd.2023.106361] [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: 06/29/2023] [Revised: 10/31/2023] [Accepted: 11/18/2023] [Indexed: 11/24/2023] Open
Abstract
The prefrontal cortex is a crucial regulator of alcohol drinking, and dependence, and other behavioral phenotypes associated with AUD. Comprehensive identification of cell-type specific transcriptomic changes in alcohol dependence will improve our understanding of mechanisms underlying the excessive alcohol use associated with alcohol dependence and will refine targets for therapeutic development. We performed single nucleus RNA sequencing (snRNA-seq) and Visium spatial gene expression profiling on the medial prefrontal cortex (mPFC) obtained from C57BL/6 J mice exposed to the two-bottle choice-chronic intermittent ethanol (CIE) vapor exposure (2BC-CIE, defined as dependent group) paradigm which models phenotypes of alcohol dependence including escalation of alcohol drinking. Gene co-expression network analysis and differential expression analysis identified highly dysregulated co-expression networks in multiple cell types. Dysregulated modules and their hub genes suggest novel understudied targets for studying molecular mechanisms contributing to the alcohol dependence state. A subtype of inhibitory neurons was the most alcohol-sensitive cell type and contained a downregulated gene co-expression module; the hub gene for this module is Cpa6, a gene previously identified by GWAS to be associated with excessive alcohol consumption. We identified an astrocytic Gpc5 module significantly upregulated in the alcohol-dependent group. To our knowledge, there are no studies linking Cpa6 and Gpc5 to the alcohol-dependent phenotype. We also identified neuroinflammation related gene expression changes in multiple cell types, specifically enriched in microglia, further implicating neuroinflammation in the escalation of alcohol drinking. Here, we present a comprehensive atlas of cell-type specific alcohol dependence mediated gene expression changes in the mPFC and identify novel cell type-specific targets implicated in alcohol dependence.
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Affiliation(s)
- Nihal A Salem
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA; Department of Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA.
| | - Lawrence Manzano
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
| | - Michael W Keist
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
| | - Olga Ponomareva
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA
| | - Amanda J Roberts
- Animal Models Core Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Marisa Roberto
- Departments of Molecular Medicine and Neuroscience, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - R Dayne Mayfield
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX 78712, USA; Department of Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA
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12
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Blaine SK, Ridner C, Campbell B, Crone L, Macatee R, Ansell EB, Robinson JL, Claus ED. People who binge drink show neuroendocrine tolerance to alcohol cues that is associated with immediate and future drinking- results from a randomized clinical experiment. Neuropsychopharmacology 2023; 48:1968-1974. [PMID: 37717082 PMCID: PMC10584838 DOI: 10.1038/s41386-023-01735-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/28/2023] [Accepted: 09/03/2023] [Indexed: 09/18/2023]
Abstract
Neuroendocrine tolerance to alcohol, i.e., a blunted cortisol response to alcohol, has been linked to Ventromedial Prefrontal Cortex (VmPFC) alcohol cue reactivity and relapse risk in severe Alcohol Use Disorders (AUDs), but its role in the development of AUDs is not clear. Recent work suggests that blunted cortisol responses to alcohol cues in individuals who engage in binge drinking (BD) may play a role in motivation to consume larger amounts of alcohol, but the link between this dysregulated endocrine response and BD's neural responses to alcohol cues remains unclear. To examine this, two groups of participants were recruited based on their recent drinking history. Thirty-three BD and 31 non-binging, social drinkers (SD) were exposed to alcohol cues and water cues in two separate 7 T functional magnetic resonance imaging (fMRI) scans. Each scan was followed by the Alcohol Taste Test (ATT) of implicit motivation for alcohol and a post-experiment, one-month prospective measurement of their "real world" drinking behavior. During each scan session, blood plasma was collected repeatedly to examine the separate effects of alcohol cues and alcohol consumption on cortisol levels. Relative to water cues and SD, BD demonstrated blunted cortisol cue reactivity that was negatively associated with VmPFC cue reactivity. In BD, both blunted cortisol and greater VmPFC cue reactivity were related to immediate and future alcohol consumption in the month following the scans. Thus, neuroendocrine tolerance in BD may be associated with increased incentive salience of cues and contribute mechanistically to increased alcohol consumption seen in the development of AUDs.
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Affiliation(s)
- Sara K Blaine
- Department of Psychological Sciences, Auburn University, Auburn, AL, USA.
| | - Clayton Ridner
- Department of Psychological Sciences, Auburn University, Auburn, AL, USA
| | - Benjamin Campbell
- Department of Psychological Sciences, Auburn University, Auburn, AL, USA
| | - Lily Crone
- Department of Psychological Sciences, Auburn University, Auburn, AL, USA
| | - Richard Macatee
- Department of Psychological Sciences, Auburn University, Auburn, AL, USA
| | - Emily B Ansell
- Department of Biobehavioral Health, Penn State University, State College, PA, USA
| | | | - Eric D Claus
- Department of Biobehavioral Health, Penn State University, State College, PA, USA
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13
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Ho MF, Zhang C, Moon I, Biernacka J, Coombes B, Ngo Q, Skillon C, Skime M, Oesterle T, Croarkin PE, Karpyak VM, Li H, Weinshilboum RM. Epigenetic regulation of GABA catabolism in iPSC-derived neurons: The molecular links between FGF21 and histone methylation. Mol Metab 2023; 77:101798. [PMID: 37689244 PMCID: PMC10514449 DOI: 10.1016/j.molmet.2023.101798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/27/2023] [Accepted: 09/03/2023] [Indexed: 09/11/2023] Open
Abstract
OBJECTIVE Fibroblast growth factor 21 (FGF21) analogs have been tested as potential therapeutics for substance use disorders. Prior research suggests that FGF21 administration might affect alcohol consumption and reward behaviors. Our recent report showed that plasma FGF21 levels were positively correlated with alcohol use in patients with alcohol use disorder (AUD). FGF21 has a short half-life (0.5-2 h) and crosses the blood-brain barrier. Therefore, we set out to identify molecular mechanisms for both the naïve form of FGF21 and a long-acting FGF21 molecule (PF-05231023) in induced pluripotent stem cell (iPSC)-derived forebrain neurons. METHODS We performed RNA-seq in iPSC-derived forebrain neurons treated with naïve FGF21 or PF-05231023 at physiologically relevant concentrations. We obtained plasma levels of FGF21 and GABA from our previous AUD clinical trial (n = 442). We performed ELISA for FGF21 in both iPSC-derived forebrain neurons and forebrain organoids. We determined protein interactions using co-immunoprecipitation. Finally, we applied ChIP assays to confirm the occupancy of REST, EZH2 and H3K27me3 by FGF21 using iPSC-derived forebrain neurons with and without drug exposure. RESULTS We identified 4701 and 1956 differentially expressed genes in response to naïve FGF21 or PF-05231023, respectively (FDR < 0.05). Notably, 974 differentially expressed genes overlapped between treatment with naïve FGF21 and PF-05231023. REST was the most important upstream regulator of differentially expressed genes. The GABAergic synapse pathway was the most significant pathway identified using the overlapping genes. We also observed a significant positive correlation between plasma FGF21 and GABA concentrations in AUD patients. In parallel, FGF21 and PF-05231023 significantly induced GABA levels in iPSC-derived neurons. Finally, functional genomics studies showed a drug-dependent occupancy of REST, EZH2, and H3K27me3 in the promoter regions of genes involved in GABA catabolism which resulted in transcriptional repression. CONCLUSIONS Our results highlight a significant role in the epigenetic regulation of genes involved in GABA catabolism related to FGF21 action. (The ClinicalTrials.gov Identifier: NCT00662571).
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Affiliation(s)
- Ming-Fen Ho
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA; Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA.
| | - Cheng Zhang
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Irene Moon
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Joanna Biernacka
- Division of Computational Biology, Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | - Brandon Coombes
- Division of Computational Biology, Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | - Quyen Ngo
- Hazelden Betty Ford Foundation, Center City, MN, USA
| | | | - Michelle Skime
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Tyler Oesterle
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Paul E Croarkin
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA; Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Victor M Karpyak
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Hu Li
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Richard M Weinshilboum
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA.
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14
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Zeng J, You L, Sheng H, Luo Y, Yang X. The differential neural substrates for reward choice under gain-loss contexts and risk in alcohol use disorder: Evidence from a voxel-based meta-analysis. Drug Alcohol Depend 2023; 248:109912. [PMID: 37182355 DOI: 10.1016/j.drugalcdep.2023.109912] [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: 01/17/2023] [Revised: 04/15/2023] [Accepted: 04/30/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND Making a risky decision is a complex process that involves the evaluation of both the values of the options and the associated risk level; this process is distinct from reward processing in gain versus loss contexts. Although disrupted reward processing in mesolimbic dopamine circuitry is suggested to underlie pathological incentive processing in patients with alcohol use disorder (AUD), the differential neural processes subserving these motivational tendencies for risk situations or gain/loss choices in decision-making have not been identified. METHODS To examine the common or distinct neural mechanisms in the evaluation of risk versus outcomes for AUD, we conducted two separate coordinate-based meta-analyses of functional neuroimaging studies by using Seed-Based d Mapping software to evaluate 13 studies investigating gain and loss processing and 10 studies investigating risky decision-making. RESULTS During gain and loss processing, relative to healthy controls, AUD patients showed reduced activation in the mesocortical-limbic circuit, including the orbital prefrontal cortex (OFC), dorsal striatum, insula, hippocampus, cerebellum, cuneus cortex and superior temporal gyrus, but hyperactivation in the inferior temporal gyrus and paracentral lobule (extending to the middle cingulate cortex (MCC) and precuneus). During decision-making under risk, AUD patients exhibited hypoactivity of the prefrontal and cingulate cortices, including the posterior cingulate cortex (extending to the MCC), middle frontal gyrus, medial prefrontal cortex, dorsolateral prefrontal cortex, OFC and anterior cingulate cortex. CONCLUSIONS Our results extend existing neurological evidence by showing that a reduced response in the mesocortical-limbic circuit is found in gain versus loss processing, with decreased responsivity in cortical regions in risk decision-making. Our results implicate dissociable neural circuit responses for gain-loss processing and risk decision-making, which contribute to a better understanding of the pathophysiological mechanism underlying nondrug incentive and risk processing in individuals with AUD.
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Affiliation(s)
- Jianguang Zeng
- School of Economics and Business Administration, Chongqing University, Chongqing, China
| | - Lantao You
- School of Economics and Business Administration, Chongqing University, Chongqing, China
| | - Haoxuan Sheng
- School of Public Policy and Administration, Chongqing University, Chongqing, China
| | - Ya Luo
- Department of Psychiatry, State Key Lab of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Xun Yang
- School of Public Policy and Administration, Chongqing University, Chongqing, China.
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15
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Urban MM, Stingl MR, Meinhardt MW. Mini-review: The neurobiology of treating substance use disorders with classical psychedelics. Front Neurosci 2023; 17:1156319. [PMID: 37139521 PMCID: PMC10149865 DOI: 10.3389/fnins.2023.1156319] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/23/2023] [Indexed: 05/05/2023] Open
Abstract
The potential of psychedelics to persistently treat substance use disorders is known since the 1960s. However, the biological mechanisms responsible for their therapeutic effects have not yet been fully elucidated. While it is known that serotonergic hallucinogens induce changes in gene expression and neuroplasticity, particularly in prefrontal regions, theories on how specifically this counteracts the alterations that occur in neuronal circuitry throughout the course of addiction are largely unknown. This narrative mini-review endeavors to synthesize well-established knowledge from addiction research with findings and theories regarding the neurobiological effects of psychedelics to give an overview of the potential mechanisms that underlie the treatment of substance use disorders with classical hallucinogenic compounds and point out gaps in the current understanding.
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Affiliation(s)
- Marvin M. Urban
- Interdisciplinary Center for Neurosciences, University of Heidelberg, Heidelberg, Germany
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, United States
- *Correspondence: Marvin M. Urban,
| | - Moritz R. Stingl
- Interdisciplinary Center for Neurosciences, University of Heidelberg, Heidelberg, Germany
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, United States
| | - Marcus W. Meinhardt
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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16
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Wu Y, Kong L, Yang A, Xin K, Lu Y, Yan X, Liu W, Zhu Y, Guo Y, Jiang X, Zhou Y, Sun Q, Tang Y, Wu F. Gray matter volume reduction in orbitofrontal cortex correlated with plasma glial cell line-derived neurotrophic factor (GDNF) levels within major depressive disorder. Neuroimage Clin 2023; 37:103341. [PMID: 36739789 PMCID: PMC9932451 DOI: 10.1016/j.nicl.2023.103341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 02/01/2023]
Abstract
BACKGROUND Major depressive disorder (MDD) is a severe mental disorder characterized by reduced gray matter volume (GMV). To date, the pathogenesis of MDD remains unclear, but neurotrophic factors play an essential role in the pathophysiological alterations of MDD during disease development. In particular, plasma glial cell line-derived neurotrophic factor (GDNF) has been suggested as a potential biomarker that may be associated with disease activity and neurological progression in MDD. Our study investigated whether plasma GDNF levels in MDD patients and healthy controls (HCs) are correlated with GMV alterations. METHODS We studied 54 MDD patients and 48 HCs. The effect of different diagnoses on whole-brain GMV was investigated using ANOVA (Analysis of Variance). The threshold of significance was p < 0.05, and Gaussian random-field (GRF) correction for error was used. All analyses were controlled for covariates such as ethnicity, handedness, age, and gender that could affect GMV. RESULT Compared with the HC group, the GMV in the MDD group was significantly reduced in the right inferior orbitofrontal cortex (OFC), and plasma GDNF levels were significantly higher in the MDD group than in the HC group. In the right inferior OFC, the GDNF levels were positively correlated with GMV reduction in the MDD group, whereas in the HC group, a negative correlation was observed between GDNF levels and GMV reduction. CONCLUSION Although increased production of GDNF in MDD may help repair neural damage in brain regions associated with brain disease, its repairing effects may be interfered with and hindered by underlying neuroinflammatory processes.
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Affiliation(s)
- Yifan Wu
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Lingtao Kong
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Anqi Yang
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Kaiqi Xin
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Yihui Lu
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Xintong Yan
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Wen Liu
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Yue Zhu
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Yingrui Guo
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Xiaowei Jiang
- Brain Function Research Section, Department of Radiology, The First Hospital of China Medical University, Shenyang, China
| | - Yifang Zhou
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China
| | - Qikun Sun
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, China
| | - Yanqing Tang
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China; Department of Geriatric Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Feng Wu
- Department of Psychiatry, The First Hospital of China Medical University, Shenyang, China.
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17
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Orth L, Meeh J, Gur RC, Neuner I, Sarkheil P. Frontostriatal circuitry as a target for fMRI-based neurofeedback interventions: A systematic review. Front Hum Neurosci 2022; 16:933718. [PMID: 36092647 PMCID: PMC9449529 DOI: 10.3389/fnhum.2022.933718] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 08/08/2022] [Indexed: 11/19/2022] Open
Abstract
Dysregulated frontostriatal circuitries are viewed as a common target for the treatment of aberrant behaviors in various psychiatric and neurological disorders. Accordingly, experimental neurofeedback paradigms have been applied to modify the frontostriatal circuitry. The human frontostriatal circuitry is topographically and functionally organized into the “limbic,” the “associative,” and the “motor” subsystems underlying a variety of affective, cognitive, and motor functions. We conducted a systematic review of the literature regarding functional magnetic resonance imaging-based neurofeedback studies that targeted brain activations within the frontostriatal circuitry. Seventy-nine published studies were included in our survey. We assessed the efficacy of these studies in terms of imaging findings of neurofeedback intervention as well as behavioral and clinical outcomes. Furthermore, we evaluated whether the neurofeedback targets of the studies could be assigned to the identifiable frontostriatal subsystems. The majority of studies that targeted frontostriatal circuitry functions focused on the anterior cingulate cortex, the dorsolateral prefrontal cortex, and the supplementary motor area. Only a few studies (n = 14) targeted the connectivity of the frontostriatal regions. However, post-hoc analyses of connectivity changes were reported in more cases (n = 32). Neurofeedback has been frequently used to modify brain activations within the frontostriatal circuitry. Given the regulatory mechanisms within the closed loop of the frontostriatal circuitry, the connectivity-based neurofeedback paradigms should be primarily considered for modifications of this system. The anatomical and functional organization of the frontostriatal system needs to be considered in decisions pertaining to the neurofeedback targets.
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Affiliation(s)
- Linda Orth
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Aachen, Germany
- *Correspondence: Linda Orth
| | - Johanna Meeh
- Department of Psychiatry and Psychotherapy, University of Münster, Münster, Germany
| | - Ruben C. Gur
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Irene Neuner
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Aachen, Germany
- Institute of Neuroscience and Medicine 4, Forschungszentrum Jülich, Jülich, Germany
| | - Pegah Sarkheil
- Department of Psychiatry and Psychotherapy, University of Münster, Münster, Germany
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18
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Oliverio R, Fitzgerald J, Velazquez-Cruz R, Whitehead B, Karelina K, Weil ZM. Ovarian Steroids Mediate Sex Differences in Alcohol Reward After Brain Injury in Mice. Front Behav Neurosci 2022; 16:907552. [PMID: 35801094 PMCID: PMC9253769 DOI: 10.3389/fnbeh.2022.907552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
Intoxication is a leading risk factor for injury, and TBI increases the risk for later alcohol misuse, especially when the injury is sustained in childhood. Previously, we modeled this pattern in mice, wherein females injured at postnatal day 21 drank significantly more than uninjured females, while we did not see this effect in males. However, the biological underpinnings of this sex difference have remained elusive. In this study, we utilize this preclinical model and traditional endocrine manipulations to assess the effect of perinatal sex steroids on post-injury ethanol response. We found that perinatal androgen administration and adult ovariectomy prevented the development of conditioned place preference to ethanol in females, while there was not an effect of gonadectomy either developmental time point on the severity of axonal degeneration. Finally, although TBI increased the number of microglia in males, there was no corresponding effect of gonadectomy, which suggests that males exhibit prolonged neuroinflammation after brain injury irrespective of circulating sex steroids. Taken together, our results indicate a potential role for ovarian sex steroids in the development of greater alcohol preference after a juvenile TBI in female mice.
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Affiliation(s)
- Robin Oliverio
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
- *Correspondence: Robin Oliverio,
| | - Julie Fitzgerald
- Department of Neuroscience, Ohio State University, Columbus, OH, United States
| | - Ruth Velazquez-Cruz
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Bailey Whitehead
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Kate Karelina
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Zachary M. Weil
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
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Richard Y, Tazi N, Frydecka D, Hamid MS, Moustafa AA. A systematic review of neural, cognitive, and clinical studies of anger and aggression. CURRENT PSYCHOLOGY 2022; 42:1-13. [PMID: 35693838 PMCID: PMC9174026 DOI: 10.1007/s12144-022-03143-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2022] [Indexed: 01/23/2023]
Abstract
Anger and aggression have large impact on people's safety and the society at large. In order to provide an intervention to minimise aggressive behaviours, it is important to understand the neural and cognitive aspects of anger and aggression. In this systematic review, we investigate the cognitive and neural aspects of anger-related processes, including anger-related behaviours and anger reduction. Using this information, we then review prior existing methods on the treatment of anger-related disorders as well as anger management, including mindfulness and cognitive behavioural therapy. At the cognitive level, our review that anger is associated with excessive attention to anger-related stimuli and impulsivity. At the neural level, anger is associated with abnormal functioning of the amygdala and ventromedial prefrontal cortex. In conclusions, based on cognitive and neural studies, we here argue that mindfulness based cognitive behavioural therapy may be better at reducing anger and aggression than other behavioural treatments, such as cognitive behavioural therapy or mindfulness alone. We provide key information on future research work and best ways to manage anger and reduce aggression. Importantly, future research should investigate how anger related behaviours is acquired and how stress impacts the development of anger.
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Affiliation(s)
| | - Nadia Tazi
- Arabian Gulf University, Manama, Bahrain
- Universite Med 5th, Rabat, Morocco
| | - Dorota Frydecka
- Department of Psychiatry, Wroclaw Medical University, Pasteur Street 10, 50-367 Wroclaw, Poland
| | | | - Ahmed A. Moustafa
- Department of Human Anatomy and Physiology, the Faculty of Health Sciences, University of Johannesburg, Johannesburg, 2193 South Africa
- School of Psychology, Faculty of Society and Design, Bond University, Gold Coast, QLD Australia
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Sundakov-Krumins TE, Lubbe S, Wand APF. Homicide and Dementia: A Systematic Review. Dement Geriatr Cogn Disord 2022; 51:1-17. [PMID: 35306488 DOI: 10.1159/000521878] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/03/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Homicide by older offenders is rare and devastating. It likely occurs due to a complex interaction of personal, social, and environmental factors. Dementia is a progressive neurological condition which may amplify behavioural disturbances such as aggression. This systematic review aims to evaluate the factors associated with homicide committed by people with dementia in order to inform clinical practice. SUMMARY MEDLINE, PsychINFO, Embase, and PubMed databases were searched in accordance with PRISMA guidelines for empirical studies examining the characteristics and circumstances of people with dementia who committed homicides. Data on factors associated with the homicide were extracted and the quality of each study rated using standardized criteria. A total of 499 papers were screened and thirteen studies met the inclusion criteria. Study design included case reports (seven studies), case series (four studies), and two retrospective cohort studies, indicative of low levels of evidence. Sample sizes were 1-70. Study findings were predominantly descriptive. Quality ratings ranged from 50 to 100%. Factors associated with disinhibition such as dysexecutive syndrome, alcohol use, and delirium may predispose to severe impulsive aggression. Psychosis and personality pathology appeared to influence targeted assaults resulting in homicide by people with dementia. Victim vulnerability was also a key element. KEY MESSAGES The current evidence examining risk factors for homicide committed by people with dementia is limited. However, there are common characteristics reported in these descriptive studies including psychiatric factors and cognitive states causing disinhibition. Recommendations for clinical practice include early assessment of older people with dementia and changed behaviours to allow management of comorbidities and reversible risk factors, alongside education, and advice to carers (who may be targets of aggression). Specialized geriatric forensic psychiatry services and care settings should be developed.
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Affiliation(s)
| | - Sean Lubbe
- Older People's Mental Health, Sydney Local Health District, Sydney, New South Wales, Australia.,Specialty of Psychiatry, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Anne Pamela Frances Wand
- Older People's Mental Health, Sydney Local Health District, Sydney, New South Wales, Australia.,Specialty of Psychiatry, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Discipline of Psychiatry and Mental Health, Faculty of Medicine and Health, University of New South Wales, Sydney, New South Wales, Australia
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Sampedro‐Piquero P, Moreno‐Fernández RD, Begega A, López M, Santín LJ. Long-term consequences of alcohol use in early adolescent mice: Focus on neuroadaptations in GR, CRF and BDNF. Addict Biol 2022; 27:e13158. [PMID: 35229955 DOI: 10.1111/adb.13158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/11/2022] [Accepted: 01/26/2022] [Indexed: 01/04/2023]
Abstract
Our aim was to assess the cognitive and emotional state, as well as related-changes in the glucocorticoid receptor (GR), the corticotropin-releasing factor (CRF) and the brain-derived neurotrophic factor (BDNF) expression of adolescent C57BL/6J male mice after a 5-week two-bottle choice protocol (postnatal day [pd]21 to pd52). Additionally, we wanted to analyse whether the behavioural and neurobiological effects observed in late adolescence (pd62) lasted until adulthood (pd84). Behavioural testing revealed that alcohol during early adolescence increased anxiety-like and compulsive-related behaviours, which was maintained in adulthood. Concerning cognition, working memory was only altered in late adolescent mice, whereas object location test performance was impaired in both ages. In contrast, novel object recognition remained unaltered. Immunohistochemical analysis showed that alcohol during adolescence diminished BDNF+ cells in the cingulate cortex, the hippocampal CA1 layer and the central amygdala. Regarding hypothalamic-pituitary-adrenal axis (HPA) functioning, alcohol abuse increased the GR and CRF expression in the hypothalamic paraventricular nucleus and the central amygdala. Besides this, GR density was also higher in the prelimbic cortex and the basolateral amygdala, regardless of the animals' age. Our findings suggest that adolescent alcohol exposure led to long-term behavioural alterations, along with changes in BDNF, GR and CRF expression in limbic brain areas involved in stress response, emotional regulation and cognition.
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Affiliation(s)
- Patricia Sampedro‐Piquero
- Departamento de Psicología Biológica y de la Salud, Facultad de Psicología Universidad Autónoma de Madrid Madrid Spain
| | | | - Azucena Begega
- Departamento de Psicología, Facultad de Psicología Universidad de Oviedo Oviedo Spain
| | - Matías López
- Departamento de Psicología, Facultad de Psicología Universidad de Oviedo Oviedo Spain
| | - Luis J. Santín
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología Universidad de Málaga Málaga Spain
- Neuroimmunology and NeuroInflammation Department Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
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Yao F, Chen K, Zhuang Y, Shen X, Wang X. Mid-Luteal Olfactory Abilities Reveal Healthy Women’s Emotional and Cognitive Functions. Front Neurosci 2022; 16:826547. [PMID: 35173576 PMCID: PMC8841682 DOI: 10.3389/fnins.2022.826547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/10/2022] [Indexed: 11/24/2022] Open
Abstract
Ovarian hormones modulate women’s physical and psychological states periodically. Although the olfactory function is increasingly recognized as a reflection of physical and mental health conditions in the clinic, the role of olfaction in emotional and cognitive functions for healthy individuals has yet to be elucidated, especially when taking the menstrual cycle into account. We carried out a comprehensive investigation to explore whether the menstrual cycle could modulate women’s olfactory function and whether healthy women’s emotional symptoms and behavioral impulsivity could be characterized by their olfactory abilities at a specific menstrual cycle stage. Twenty-nine healthy young women were evaluated repeatedly using a standard olfactory test battery during the late follicular and mid-luteal phases. Their emotional symptoms and behavioral impulsivity were separately quantified via psychometric scales and a stop-signal task. We observed enhanced olfactory discrimination performance during the mid-luteal phase than the late follicular phase. We also found that women’s better olfactory discrimination and worse olfactory threshold in the mid-luteal phase predicted fewer individual emotional symptoms and lower behavioral impulsivity, respectively. These relationships were nonetheless absent in the late follicular phase. Our data extend previous clinical observations of the coexistence of olfactory deficits and neuropsychiatric disorders, providing new insights into the significance of olfaction and ovarian hormones for emotional and cognitive functions.
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Affiliation(s)
- Fangshu Yao
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Kepu Chen
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Yiyun Zhuang
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Xueer Shen
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Xiaochun Wang
- School of Psychology, Shanghai University of Sport, Shanghai, China
- *Correspondence: Xiaochun Wang,
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Abstract
PURPOSE A growing body of evidence has implicated the endocannabinoid (eCB) system in the acute, chronic, and withdrawal effects of alcohol/ethanol on synaptic function. These eCB-mediated synaptic effects may contribute to the development of alcohol use disorder (AUD). Alcohol exposure causes neurobiological alterations similar to those elicited by chronic cannabinoid (CB) exposure. Like alcohol, cannabinoids alter many central processes, such as cognition, locomotion, synaptic transmission, and neurotransmitter release. There is a strong need to elucidate the effects of ethanol on the eCB system in different brain regions to understand the role of eCB signaling in AUD. SEARCH METHODS For the scope of this review, preclinical studies were identified through queries of the PubMed database. SEARCH RESULTS This search yielded 459 articles. Clinical studies and papers irrelevant to the topic of this review were excluded. DISCUSSION AND CONCLUSIONS The endocannabinoid system includes, but is not limited to, cannabinoid receptors 1 (CB1), among the most abundantly expressed neuronal receptors in the brain; cannabinoid receptors 2 (CB2); and endogenously formed CB1 ligands, including arachidonoylethanolamide (AEA; anandamide), and 2-arachidonoylglycerol (2-AG). The development of specific CB1 agonists, such as WIN 55,212-2 (WIN), and antagonists, such as SR 141716A (rimonabant), provide powerful pharmacological tools for eCB research. Alcohol exposure has brain region-specific effects on the eCB system, including altering the synthesis of endocannabinoids (e.g., AEA, 2-AG), the synthesis of their precursors, and the density and coupling efficacy of CB1. These alcohol-induced alterations of the eCB system have subsequent effects on synaptic function including neuronal excitability and postsynaptic conductance. This review will provide a comprehensive evaluation of the current literature on the synaptic interactions of alcohol exposure and eCB signaling systems, with an emphasis on molecular and physiological synaptic effects of alcohol on the eCB system. A limited volume of studies has focused on the underlying interactions of alcohol and the eCB system at the synaptic level in the brain. Thus, the data on synaptic interactions are sparse, and future research addressing these interactions is much needed.
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Affiliation(s)
- Sarah A Wolfe
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, California
| | - Valentina Vozella
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, California
| | - Marisa Roberto
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, California
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24
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Marrero-Cristobal G, Gelpi-Dominguez U, Morales-Silva R, Alvarado-Torres J, Perez-Torres J, Perez-Perez Y, Sepulveda-Orengo M. Aerobic exercise as a promising nonpharmacological therapy for the treatment of substance use disorders. J Neurosci Res 2021; 100:1602-1642. [PMID: 34850988 PMCID: PMC9156662 DOI: 10.1002/jnr.24990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 10/06/2021] [Accepted: 10/14/2021] [Indexed: 12/12/2022]
Abstract
Despite the prevalence and public health impact of substance use disorders (SUDs), effective long-term treatments remain elusive. Aerobic exercise is a promising, nonpharmacological treatment currently under investigation as a strategy for preventing drug relapse. Aerobic exercise could be incorporated into the comprehensive treatment regimens for people with substance abuse disorders. Preclinical studies of SUD with animal models have shown that aerobic exercise diminishes drug-seeking behavior, which leads to relapse, in both male and female rats. Nevertheless, little is known regarding the effects of substance abuse-induced cellular and physiological adaptations believed to be responsible for drug-seeking behavior. Accordingly, the overall goal of this review is to provide a summary and an assessment of findings to date, highlighting evidence of the molecular and neurological effects of exercise on adaptations associated with SUD.
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Affiliation(s)
| | - Ursula Gelpi-Dominguez
- School of Behavioral and Brain Sciences, Ponce Health Sciences University, Ponce, PR, USA
| | - Roberto Morales-Silva
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University, Ponce, PR, USA
| | - John Alvarado-Torres
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University, Ponce, PR, USA
| | - Joshua Perez-Torres
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University, Ponce, PR, USA
| | - Yobet Perez-Perez
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University, Ponce, PR, USA
| | - Marian Sepulveda-Orengo
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University, Ponce, PR, USA
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25
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Abstract
BACKGROUND Dependent alcohol drinkers exhibit differences in the structure and function of the brain, and impairments in cognitive function, including executive functions (EFs). Less is known about the impact of non-dependent but hazardous use (that which raises the risk of harm), and it is also unclear to what extent executive impairments in this cohort affect real-world function. The current study examines the relationship between alcohol use, EF and alcohol-related problems, in the general population. METHODS A between-groups cross-sectional design assessed EF across two levels of drinking; hazardous (Alcohol Use Disorders Identification Test (AUDIT) score of ⩾8) and non-hazardous. Alcohol drinkers (n = 666; 136 male; 524 female; six not disclosed; aged 28.02 ± 10.40 years) completed validated questionnaires online assessing subjective EF, alcohol use and alcohol-related problems. RESULTS Organisation, Strategic Planning, Impulse Control and overall function were significantly impaired in hazardous drinkers. Furthermore, the effect of alcohol on EF, partially mediated the relationship between alcohol use and alcohol-related problems. CONCLUSION Hazardous drinking was associated with lower subjective EF, and this mediated the effect of alcohol on alcohol-related problems. This may be due to changes in prefrontal brain regions, which could indicate greater risk for the development of alcohol dependence (AD). Future research should use additional means to assess EF in hazardous drinkers, including recovery of function, development of AD and the relationship between cognition and alcohol-related daily problems.
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Affiliation(s)
- Anna Powell
- School of Psychology, Liverpool John
Moores University, Liverpool, UK
| | - Harry Sumnall
- Public Health Institute, Liverpool John
Moores University, Liverpool, UK
- Liverpool Centre for Alcohol Research,
University of Liverpool, Liverpool, UK
| | - Cecil Kullu
- Mersey Care NHS Foundation Trust,
Liverpool, UK
| | - Lynn Owens
- Liverpool Centre for Alcohol Research,
University of Liverpool, Liverpool, UK
- University of Liverpool, Liverpool,
UK
| | - Catharine Montgomery
- School of Psychology, Liverpool John
Moores University, Liverpool, UK
- Liverpool Centre for Alcohol Research,
University of Liverpool, Liverpool, UK
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26
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Lannoy S, Sullivan EV. Trajectories of brain development reveal times of risk and factors promoting resilience to alcohol use during adolescence. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2021; 160:85-116. [PMID: 34696880 PMCID: PMC10657639 DOI: 10.1016/bs.irn.2021.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alcohol use disorder (AUD) is recognized as harmful for the developing brain. Numerous studies have sought environmental and genetic risk factors that predict the development of AUD, but recently identified resilience factors have emerged as protective. This chapter reviews normal processes of brain development in adolescence and emerging adulthood, delineates disturbed growth neurotrajectories related to heavy drinking, and identifies potential endogenous, experiential, and time-linked brain markers of resilience. For example, concurrent high dorsolateral prefrontal activation serving inhibitory control and low nucleus accumbens activation serving reward functions engender positive adaptation and low alcohol use. Also discussed is the role that moderating factors have in promoting risk for or resilience to AUD. Longitudinal research on the effects of all levels of alcohol drinking on the developing brain remains crucial and should be pursued in the context of resilience, which is a promising direction for identifying protective biomarkers against developing AUDs.
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Affiliation(s)
- S Lannoy
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, United States; Department of Psychiatry, Virginia Commonwealth University, Virginia Institute for Psychiatric and Behavioral Genetics, Richmond, VA, United States
| | - E V Sullivan
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, United States.
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27
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Barchiesi R, Chanthongdee K, Domi E, Gobbo F, Coppola A, Asratian A, Toivainen S, Holm L, Augier G, Xu L, Augier E, Heilig M, Barbier E. Stress-induced escalation of alcohol self-administration, anxiety-like behavior, and elevated amygdala Avp expression in a susceptible subpopulation of rats. Addict Biol 2021; 26:e13009. [PMID: 33565224 DOI: 10.1111/adb.13009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/11/2022]
Abstract
Comorbidity between alcohol use and anxiety disorders is associated with more severe symptoms and poorer treatment outcomes than either of the conditions alone. There is a well-known link between stress and the development of these disorders, with post-traumatic stress disorder as a prototypic example. Post-traumatic stress disorder can arise as a consequence of experiencing traumatic events firsthand and also after witnessing them. Here, we used a model of social defeat and witness stress in rats, to study shared mechanisms of stress-induced anxiety-like behavior and escalated alcohol self-administration. Similar to what is observed clinically, we found considerable individual differences in susceptibility and resilience to the stress. Both among defeated and witness rats, we found a subpopulation in which exposure was followed by emergence of increased anxiety-like behavior and escalation of alcohol self-administration. We then profiled gene expression in tissue from the amygdala, a key brain region in the regulation of stress, alcohol use, and anxiety disorders. When comparing "comorbid" and resilient socially defeated rats, we identified a strong upregulation of vasopressin and oxytocin, and this correlated positively with the magnitude of the alcohol self-administration and anxiety-like behavior. A similar trend was observed in comorbid witness rats. Together, our findings provide novel insights into molecular mechanisms underpinning the comorbidity of escalated alcohol self-administration and anxiety-like behavior.
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Affiliation(s)
- Riccardo Barchiesi
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Kanat Chanthongdee
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
- Department of Physiology, Faculty of Medicine Siriraj Hospital Mahidol University Thailand
| | - Esi Domi
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Francesco Gobbo
- Centre for Discovery Brain Sciences University of Edinburgh UK
| | - Andrea Coppola
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Anna Asratian
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Sanne Toivainen
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Lovisa Holm
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Gaelle Augier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Li Xu
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
- Psychosomatic Medicine Center Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China Chengdu China
| | - Eric Augier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Markus Heilig
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
| | - Estelle Barbier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences Linköping University Sweden
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Dannenhoffer CA, Robertson MM, Macht VA, Mooney SM, Boettiger CA, Robinson DL. Chronic alcohol exposure during critical developmental periods differentially impacts persistence of deficits in cognitive flexibility and related circuitry. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2021; 160:117-173. [PMID: 34696872 DOI: 10.1016/bs.irn.2021.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cognitive flexibility in decision making depends on prefrontal cortical function and is used by individuals to adapt to environmental changes in circumstances. Cognitive flexibility can be measured in the laboratory using a variety of discrete, translational tasks, including those that involve reversal learning and/or set-shifting ability. Distinct components of flexible behavior rely upon overlapping brain circuits, including different prefrontal substructures that have separable impacts on decision making. Cognitive flexibility is impaired after chronic alcohol exposure, particularly during development when the brain undergoes rapid maturation. This review examines how cognitive flexibility, as indexed by reversal and set-shifting tasks, is impacted by chronic alcohol exposure in adulthood, adolescent, and prenatal periods in humans and animal models. We also discuss areas for future study, including mechanisms that may contribute to the persistence of cognitive deficits after developmental alcohol exposure and the compacting consequences from exposure across multiple critical periods.
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Affiliation(s)
- C A Dannenhoffer
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - M M Robertson
- Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, NC, United States
| | - Victoria A Macht
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - S M Mooney
- Nutrition Research Institute and Department of Nutrition, University of North Carolina, Chapel Hill, NC, United States
| | - C A Boettiger
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, NC, United States; Neuroscience Curriculum, University of North Carolina, Chapel Hill, NC, United States; Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, NC, United States
| | - Donita L Robinson
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Psychiatry, University of North Carolina, Chapel Hill, NC, United States; Neuroscience Curriculum, University of North Carolina, Chapel Hill, NC, United States.
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McKim TH, Dove SJ, Robinson DL, Fröhlich F, Boettiger CA. Addiction history moderates the effect of prefrontal 10-Hz transcranial alternating current stimulation on habitual action selection. J Neurophysiol 2021; 125:768-780. [PMID: 33356905 PMCID: PMC7988748 DOI: 10.1152/jn.00180.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 11/29/2020] [Accepted: 12/12/2020] [Indexed: 02/07/2023] Open
Abstract
Individuals with substance use disorders (SUDs) transition more quickly from goal-directed to habitual action-selection, but the neural mechanisms underlying this phenomenon remain unclear. Data from animal models suggest that drugs of abuse can modify the neurocircuits that regulate action-selection, enhancing circuits that drive inflexible, habit-based stimulus-response (S-R) action-selection and weakening circuits that drive flexible, goal-directed actions. Here, we tested the effect of bilateral 10-Hz transcranial alternating current stimulation (10Ηz-tACs) of the dorsolateral prefrontal cortex on action-selection in men and women with a SUD history and an age- and sex-matched control group. We tested the hypothesis that true 10Ηz-tACS versus active sham stimulation would reduce perseverative errors after changed response contingencies for well-learned S-R associations, reflecting reduced habit-based action-selection, specifically in the SUD group. We found that 10 Hz-tACS increased perseverative errors in the control group, but in the SUD group, 10 Hz-tACS effects on perseverative errors depended on substance abuse duration: a longer addiction history was associated with a greater reduction of perseverative errors. These results suggest that 10Ηz-tACs altered circuit level dynamics regulating behavioral flexibility, and provide a foundation for future studies to test stimulation site, frequency, and timing specificity. Moreover, these data suggest that chronic substance abuse is associated with altered circuit dynamics that are ameliorated by 10Ηz-tACs. Determining the generalizability of these effects and their duration merits investigation as a direction for novel therapeutic interventions. These findings are timely based on growing interest in transcranial stimulation methods for treating SUDs.NEW & NOTEWORTHY Treating the executive dysfunction associated with addiction is hampered by redundancies in pharmacological regulation of different behavioral control circuits. Thus, nonpharmacological interventions hold promise for addiction treatment. Here, we show that, among people with an addiction history, 10-Hz transcranial alternating current stimulation (10Hz-tACS) of the dorsolateral prefrontal cortex can reduce habitual actions. The fact that 10Hz-tACS can regulate behavioral flexibility suggests its possible utility in reducing harmful habitual actions.
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Affiliation(s)
- Theresa H McKim
- Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, North Carolina
| | - Samantha J Dove
- Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, North Carolina
| | - Donita L Robinson
- Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina
- Bowles Center for Alcohol Studies, University of North Carolina, Chapel Hill, North Carolina
- Neuroscience Curriculum, University of North Carolina, Chapel Hill, North Carolina
| | - Flavio Fröhlich
- Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina
- Neuroscience Curriculum, University of North Carolina, Chapel Hill, North Carolina
- Joint UNC-NCSU Department of Biomedical Engineering, Department of Cell Biology and Physiology, Neuroscience Center, and Department of Neurology, University of North Carolina, Chapel Hill, North Carolina
| | - Charlotte A Boettiger
- Department of Psychology and Neuroscience, University of North Carolina, Chapel Hill, North Carolina
- Bowles Center for Alcohol Studies, University of North Carolina, Chapel Hill, North Carolina
- Neuroscience Curriculum, University of North Carolina, Chapel Hill, North Carolina
- Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, North Carolina
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30
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Barbier E, Barchiesi R, Domi A, Chanthongdee K, Domi E, Augier G, Augier E, Xu L, Adermark L, Heilig M. Downregulation of Synaptotagmin 1 in the Prelimbic Cortex Drives Alcohol-Associated Behaviors in Rats. Biol Psychiatry 2021; 89:398-406. [PMID: 33160605 DOI: 10.1016/j.biopsych.2020.08.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/17/2020] [Accepted: 08/25/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND Alcohol addiction is characterized by persistent neuroadaptations in brain structures involved in motivation, emotion, and decision making, including the medial prefrontal cortex, the nucleus accumbens, and the amygdala. We previously reported that induction of alcohol dependence was associated with long-term changes in the expression of genes involved in neurotransmitter release. Specifically, Syt1, which plays a key role in neurotransmitter release and neuronal functions, was downregulated. Here, we therefore examined the role of Syt1 in alcohol-associated behaviors in rats. METHODS We evaluated the effect of Syt1 downregulation using an adeno-associated virus (AAV) containing a short hairpin RNA against Syt1. Cre-dependent Syt1 was also used in combination with an rAAV2 retro-Cre virus to assess circuit-specific effects of Syt1 knockdown (KD). RESULTS Alcohol-induced downregulation of Syt1 is specific to the prelimbic cortex (PL), and KD of Syt1 in the PL resulted in escalated alcohol consumption, increased motivation to consume alcohol, and increased alcohol drinking despite negative consequences ("compulsivity"). Syt1 KD in the PL altered the excitation/inhibition balance in the basolateral amygdala, while the nucleus accumbens core was unaffected. Accordingly, a projection-specific Syt1 KD in the PL-basolateral amygdala projection was sufficient to increase compulsive alcohol drinking, while a KD of Syt1 restricted to PL-nucleus accumbens core projecting neurons had no effect on tested alcohol-related behaviors. CONCLUSIONS Together, these data suggest that dysregulation of Syt1 is an important mechanism in long-term neuroadaptations observed after a history of alcohol dependence, and that Syt1 regulates alcohol-related behaviors in part by affecting a PL-basolateral amygdala brain circuit.
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Affiliation(s)
- Estelle Barbier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
| | - Riccardo Barchiesi
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Ana Domi
- Addiction Biology Unit, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kanat Chanthongdee
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Physiology, Faculty of Medicine Siraj Hospital, Mahidol University, Bangkok, Thailand
| | - Esi Domi
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Gaelle Augier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Eric Augier
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Li Xu
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Psychosomatic Medicine Center, Sichuan Academy of Medical Sciences, Sichuan Provincial People's Hospital, Chengdu, China
| | - Louise Adermark
- Addiction Biology Unit, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Markus Heilig
- Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
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Joffe ME, Winder DG, Conn PJ. Increased Synaptic Strength and mGlu 2/3 Receptor Plasticity on Mouse Prefrontal Cortex Intratelencephalic Pyramidal Cells Following Intermittent Access to Ethanol. Alcohol Clin Exp Res 2021; 45:518-529. [PMID: 33434325 DOI: 10.1111/acer.14546] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 01/04/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND The medial prefrontal cortex (PFC) is crucial for regulating craving and alcohol seeking in alcohol use disorder (AUD) patients and alcohol seeking in animal models. Maladaptive changes in volitional ethanol (EtOH) intake have been associated with PFC function, yet synaptic adaptations within PFC have not been consistently detected in voluntary drinking rodent models. At least 80% of the neurons in PFC are glutamatergic pyramidal cells. Pyramidal cells provide the predominant cortical output to several brain regions relevant to AUD, including structures within the telencephalon (IT: e.g., basal ganglia, amygdala, other neocortical regions) and outside the telencephalon (ET: e.g., lateral hypothalamus, midbrain monoaminergic structures, thalamus). METHODS In addition to their anatomical distinctions, studies from several laboratories have revealed that prefrontal cortical IT and ET pyramidal cells may be differentiated by specific electrophysiological parameters. These distinguishable parameters make it possible to readily classify pyramidal cells into separable subtypes. Here, we employed and validated the hyperpolarization sag ratio as a diagnostic proxy for separating ET (type A) and IT (type B) neurons. We recorded from deep-layer prelimbic PFC pyramidal cells of mice 1 day after 4 to 5 weeks of intermittent access (IA) EtOH exposure. RESULTS Membrane properties were not altered by IA EtOH, but excitatory postsynaptic strength onto IT type B neurons was selectively enhanced in slices from IA EtOH mice. The increased excitatory drive was accompanied by enhanced mGlu2/3 receptor plasticity on IT type B neurons, providing a potential translational approach to mitigate cognitive and motivational changes to PFC function related to binge drinking. CONCLUSIONS Together, these studies provide insight into the specific PFC neurocircuits altered by voluntary drinking. In addition, the findings provide an additional rationale for developing compounds that potentiate mGlu2 and/or mGlu3 receptor function as potential treatments for AUD.
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Affiliation(s)
- Max E Joffe
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA.,Warren Center for Neuroscience Drug Discovery, Nashville, TN, USA.,Vanderbilt Center for Addiction Research, Nashville, TN, USA
| | - Danny G Winder
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA.,Vanderbilt Center for Addiction Research, Nashville, TN, USA.,Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - P Jeffrey Conn
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA.,Warren Center for Neuroscience Drug Discovery, Nashville, TN, USA.,Vanderbilt Center for Addiction Research, Nashville, TN, USA
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Syaifullah AH, Shiino A, Fujiyoshi A, Kadota A, Kondo K, Ito T, Segawa H, Moniruzzaman M, Waki T, Miyagawa N, Tooyama I, Ueshima H, Miura K, Ueshima H, Miura K. Alcohol drinking and brain morphometry in apparently healthy community-dwelling Japanese men. Alcohol 2021; 90:57-65. [PMID: 33278513 DOI: 10.1016/j.alcohol.2020.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 12/21/2022]
Abstract
The clinical implications of alcohol consumption have been extensively examined; however, its effects on brain structures in apparently healthy community-dwellers remain unclear. Therefore, we investigated the relationship between alcohol consumption and brain gray matter volume (GMV) in community-dwelling Japanese men using voxel-based morphometry (VBM). We recruited cognitively intact Japanese men, aged 40-79 years, from a population-based cohort in Shiga, Japan. Brain magnetic resonance imaging was performed, on average, 2 years after demographic and medical information was obtained in 2010-2014. A multivariable linear regression analysis of 639 men was conducted to elucidate the relationship between the amount of alcohol consumed and GMV. VBM statistics were analyzed by threshold-free cluster enhancement with a family-wise error rate of <0.05. The results obtained demonstrated that the amount of alcohol consumed was associated with lower GMV. The VBM analysis showed lower GMV within the parahippocampal, entorhinal, cingulate, insular, temporal, and frontal cortices and cerebellum in very heavy drinkers (≥42 ethanol g/day) than in non-drinkers. Furthermore, alcohol consumption was associated with a higher white matter lesion volume. These results suggest subclinical structural changes similar to alcohol-related neurological diseases.
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Affiliation(s)
- Ali Haidar Syaifullah
- Biomedical MRI Science Center, Shiga University of Medical Science, Shiga, Japan; Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan
| | - Akihiko Shiino
- Biomedical MRI Science Center, Shiga University of Medical Science, Shiga, Japan.
| | - Akira Fujiyoshi
- Department of Hygiene, School of Medicine, Wakayama Medical University, Japan; Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Aya Kadota
- Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan; Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Keiko Kondo
- Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Takahiro Ito
- Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Hiroyoshi Segawa
- Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan
| | - Mohammad Moniruzzaman
- Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan; Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Takashi Waki
- Department of Medical Statistics, Shiga University of Medical Science, Shiga, Japan
| | - Naoko Miyagawa
- Department of Public Health, Shiga University of Medical Science, Shiga, Japan; International Center for Nutrition and Information, National Institute of Biomedical Innovation, Health and Nutrition, Shinjuku-ku, Tokyo, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga, Japan
| | - Hirotsugu Ueshima
- Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan; Department of Public Health, Shiga University of Medical Science, Shiga, Japan
| | - Katsuyuki Miura
- Center for the Epidemiologic Research in Asia (CERA), Shiga University of Medical Science, Shiga, Japan; Department of Public Health, Shiga University of Medical Science, Shiga, Japan
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Somkuwar SS, Villalpando EG, Quach LW, Head BP, McKenna BS, Scadeng M, Mandyam CD. Abstinence from ethanol dependence produces concomitant cortical gray matter abnormalities, microstructural deficits and cognitive dysfunction. Eur Neuropsychopharmacol 2021; 42:22-34. [PMID: 33279357 PMCID: PMC7797163 DOI: 10.1016/j.euroneuro.2020.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/12/2020] [Accepted: 11/07/2020] [Indexed: 12/20/2022]
Abstract
Previous studies demonstrate that ethanol dependence induced by repeating cycles of chronic intermittent ethanol vapor exposure (CIE) followed by protracted abstinence (CIE-PA) produces significant alterations in oligodendrogenesis in the rodent medial prefrontal cortex (mPFC). Specifically, CIE-PA produced an unprecedented increase in premyelinating oligodendroglial progenitor cells and myelin, which have been associated with persistent elevated drinking behaviors during abstinence. The current study used neuroimaging and electron microscopy to evaluate the integrity of enhanced myelin and microstructural deficits underlying enhanced myelination in the mPFC in male rats experiencing forced abstinence for 1 day (D), 7D, 21D and 42D following seven weeks of CIE. In vivo diffusion tensor imaging (DTI) detected altered microstructural integrity in the mPFC and corpus callosum (CC). Altered integrity was characterized as reduced fractional anisotropy (FA) in the CC, and enhanced mean diffusivity (MD) in the mPFC in 7D abstinent rats. Increased MD occurred concomitantly with increases in myelin associated proteins, flayed myelin and enhanced mitochondrial stress in the mPFC in 7D abstinent rats, suggesting that the increases in myelination during abstinence was aberrant. Evaluation of cognitive performance via Pavlovian conditioning in 7D abstinent rats revealed reduced retrieval and recall of fear memories dependent on the mPFC. These findings indicate that forced abstinence from moderate to severe alcohol use disorder produces gray matter damage via myelin dysfunction in the mPFC and that these microstructural changes were associated with deficits in PFC dependent behaviors.
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Affiliation(s)
| | | | - Leon W Quach
- VA San Diego Healthcare System, San Diego, CA 92161, USA
| | - Brian P Head
- VA San Diego Healthcare System, San Diego, CA 92161, USA; Departments of Anesthesiology, University of California San Diego, San Diego, CA 92161, USA
| | - Benjamin S McKenna
- Departments of Psychiatry, University of California San Diego, San Diego, CA 92161, USA
| | - Miriam Scadeng
- Departments of Radiology, University of California San Diego, San Diego, CA 92161, USA
| | - Chitra D Mandyam
- VA San Diego Healthcare System, San Diego, CA 92161, USA; Departments of Anesthesiology, University of California San Diego, San Diego, CA 92161, USA.
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Vornholt E, Drake J, Mamdani M, McMichael G, Taylor ZN, Bacanu SA, Miles MF, Vladimirov VI. Network preservation reveals shared and unique biological processes associated with chronic alcohol abuse in NAc and PFC. PLoS One 2020; 15:e0243857. [PMID: 33332381 PMCID: PMC7745987 DOI: 10.1371/journal.pone.0243857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic alcohol abuse has been linked to the disruption of executive function and allostatic conditioning of reward response dysregulation in the mesocorticolimbic pathway (MCL). Here, we analyzed genome-wide mRNA and miRNA expression from matched cases with alcohol dependence (AD) and controls (n = 35) via gene network analysis to identify unique and shared biological processes dysregulated in the prefrontal cortex (PFC) and nucleus accumbens (NAc). We further investigated potential mRNA/miRNA interactions at the network and individual gene expression levels to identify the neurobiological mechanisms underlying AD in the brain. By using genotyped and imputed SNP data, we identified expression quantitative trait loci (eQTL) uncovering potential genetic regulatory elements for gene networks associated with AD. At a Bonferroni corrected p≤0.05, we identified significant mRNA (NAc = 6; PFC = 3) and miRNA (NAc = 3; PFC = 2) AD modules. The gene-set enrichment analyses revealed modules preserved between PFC and NAc to be enriched for immune response processes, whereas genes involved in cellular morphogenesis/localization and cilia-based cell projection were enriched in NAc modules only. At a Bonferroni corrected p≤0.05, we identified significant mRNA/miRNA network module correlations (NAc = 6; PFC = 4), which at an individual transcript level implicated miR-449a/b as potential regulators for cellular morphogenesis/localization in NAc. Finally, we identified eQTLs (NAc: mRNA = 37, miRNA = 9; PFC: mRNA = 17, miRNA = 16) which potentially mediate alcohol's effect in a brain region-specific manner. Our study highlights the neurotoxic effects of chronic alcohol abuse as well as brain region specific molecular changes that may impact the development of alcohol addiction.
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Affiliation(s)
- Eric Vornholt
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Integrative Life Sciences Doctoral Program, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - John Drake
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, Texas, United States of America
| | - Mohammed Mamdani
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Gowon McMichael
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Zachary N. Taylor
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Silviu-Alin Bacanu
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department Psychiatry, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Michael F. Miles
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- VCU-Alcohol Research Center, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Neurology, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Vladimir I. Vladimirov
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, Texas, United States of America
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Physiology & Biophysics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Lieber Institute for Brain Development, Johns Hopkins University, Baltimore, Maryland, United States of America
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35
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The infralimbic cortex and mGlu5 mediate the effects of chronic intermittent ethanol exposure on fear learning and memory. Psychopharmacology (Berl) 2020; 237:3417-3433. [PMID: 32767063 PMCID: PMC7572878 DOI: 10.1007/s00213-020-05622-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/27/2020] [Indexed: 01/19/2023]
Abstract
RATIONALE AND OBJECTIVES Alcohol use disorder (AUD) and post-traumatic stress disorder (PTSD) often occur comorbidly. While the incidence of these disorders is increasing, there is little investigation into the interacting neural mechanisms between these disorders. These studies aim to identify cognitive deficits that occur as a consequence of fear and ethanol exposure, implement a novel pharmaceutical intervention, and determine relevant underlying neurocircuitry. Additionally, due to clinical sex differences in PTSD prevalence and alcohol abuse, these studies examine the nature of this relationship in rodent models. METHODS Animals were exposed to a model of PTSD+AUD using auditory fear conditioning followed by chronic intermittent ethanol exposure (CIE). Then, rats received extinction training consisting of multiple conditioned stimulus presentations in absence of the shock. Extinction recall and context-induced freezing were measured in subsequent tests. CDPPB, a metabotropic glutamate receptor 5 (mGlu5) positive allosteric modulator, was used to treat these deficits, and region-specific effects were determined using microinjections. RESULTS These studies determined that CIE exposure led to deficits in fear extinction learning and heightened context-induced freezing while sex differences emerged in fear conditioning and extinction cue recall tests. Furthermore, using CDPPB, these studies found that enhancement of infralimbic (IfL) mGlu5 activity was able to recover CIE-induced deficits in both males and females. CONCLUSIONS These studies show that CIE induces deficits in fear-related behaviors and that enhancement of IfL glutamatergic activity can facilitate learning during extinction. Additionally, we identify novel pharmacological targets for the treatment of individuals who suffer from PTSD and AUD.
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36
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Luo YX, Galaj E, Ma YY. Differential alterations of insular cortex excitability after adolescent or adult chronic intermittent ethanol administration in male rats. J Neurosci Res 2020; 99:649-661. [PMID: 33094531 DOI: 10.1002/jnr.24737] [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: 07/01/2020] [Revised: 09/19/2020] [Accepted: 09/30/2020] [Indexed: 12/31/2022]
Abstract
Adolescent alcohol drinking, primarily in the form of binge-drinking episodes, is a serious public health concern. Binge drinking in laboratory animals has been modeled by a procedure involving chronic intermittent ethanol (CIE) administration, as compared with chronic intermittent water (CIW). The prolonged effects of adolescent binge alcohol exposure in adults, such as high risk of developing alcohol use disorder, are severe but available treatments in the clinic are limited. One reason is the lack of sufficient understanding about the associated neuronal alterations. The involvement of the insular cortex, particularly the anterior agranular insula (AAI), has emerged as a critical region to explain neuronal mechanisms of substance abuse. This study was designed to evaluate the functional output of the AAI by measuring the intrinsic excitability of pyramidal neurons from male rats 2 or 21 days after adolescent or adult CIE treatment. Decreases in intrinsic excitability in AAI pyramidal neurons were detected 21 days, relative to 2 days, after adolescent CIE. Interestingly, the decreased intrinsic excitability in the AAI pyramidal neurons was observed 2 days after adult CIE, compared to adult CIW, but no difference was found between 2 versus 21 days after adult CIE. These data indicate that, although the AAI is influenced within a limited period after adult but not adolescent CIE, neuronal alterations in AAI are affected during the prolonged period of withdrawal from adolescent but not adult CIE. This may explain the prolonged vulnerability to mental disorders of subjects with an alcohol binge history during their adolescent stage.
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Affiliation(s)
- Yi-Xiao Luo
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Psychology, Behavioral Neuroscience Program, State University of New York, Binghamton, NY, USA
| | - Ewa Galaj
- Department of Psychology, Behavioral Neuroscience Program, State University of New York, Binghamton, NY, USA
| | - Yao-Ying Ma
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Psychology, Behavioral Neuroscience Program, State University of New York, Binghamton, NY, USA.,Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
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37
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Engleman EA, Ingraham CM, Rodd ZA, Murphy JM, McBride WJ, Ding ZM. The reinforcing effects of ethanol within the prelimbic cortex and ethanol drinking: Involvement of local dopamine D 2 receptor-mediated neurotransmission. Drug Alcohol Depend 2020; 214:108165. [PMID: 32688071 PMCID: PMC7431019 DOI: 10.1016/j.drugalcdep.2020.108165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/21/2020] [Accepted: 06/20/2020] [Indexed: 11/17/2022]
Abstract
Previous studies have identified important mesolimbic regions in supporting the reinforcing effects of ethanol. However, the involvement of the medial prefrontal cortex (mPFC), another key region within the mesocorticolimbic system, in ethanol reinforcement has been understudied. The objective of the current study was to examine the role of the prelimbic (PL) cortex sub-region of the mPFC in ethanol reinforcement and drinking. Intracranial self-administration was used to examine the reinforcing effects of ethanol within the PL cortex. Quantitative microdialysis was used to measure basal extracellular DA concentrations and clearance in the PL cortex following chronic ethanol drinking. In addition, the involvement of dopamine (DA) D2 receptors within the PL cortex on the reinforcing effects of ethanol and ethanol drinking was determined. Ethanol was dose-dependent self-administered into the PL cortex, with significantly more infusions elicited by 100-200 mg% ethanol than vehicle. Co-infusion of the D2 receptor antagonist sulpiride significantly reduced ethanol self-administration. Chronic ethanol drinking significantly elevated basal extracellular DA concentrations without altering DA clearance. Microinjection of sulpiride into the PL cortex selectively reduced ethanol, but not saccharine, drinking. These results indicate that the PL cortex supported the reinforcing effects of ethanol, and that ethanol drinking enhanced basal DA neurotransmission within the PL cortex. In addition, D2 receptor antagonism within the PL cortex reduced ethanol self-administration and drinking. Collectively, these findings revealed important DA mechanisms within the PL cortex in mediating ethanol reinforcement and drinking.
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Affiliation(s)
- Eric A Engleman
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States
| | - Cynthia M Ingraham
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States
| | - Zachary A Rodd
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States
| | - James M Murphy
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States
| | - William J McBride
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States
| | - Zheng-Ming Ding
- Department of Psychiatry, Indiana University School of Medicine, 355 West 16th Street, Indianapolis, IN 46202, United States; Department of Anesthesiology and Perioperative Medicine, Department of Pharmacology, Pennsylvania State University College of Medicine, 700 HMC Crescent Road, Hershey, PA 17033, United States.
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Joffe ME, Winder DG, Conn PJ. Contrasting sex-dependent adaptations to synaptic physiology and membrane properties of prefrontal cortex interneuron subtypes in a mouse model of binge drinking. Neuropharmacology 2020; 178:108126. [PMID: 32781000 DOI: 10.1016/j.neuropharm.2020.108126] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/18/2020] [Accepted: 04/29/2020] [Indexed: 12/24/2022]
Abstract
Alcohol use disorder (AUD) affects all sexes, however women who develop AUD may be particularly susceptible to cravings and other components of the disease. While many brain regions are involved in AUD etiology, proper prefrontal cortex (PFC) function is particularly important for top-down craving management and the moderation of drinking behaviors. Essential regulation of PFC output is provided by local inhibitory interneurons, yet how drinking affects interneuron physiology remains poorly understood, particularly in female individuals. To address this gap, we generated fluorescent reporter transgenic mice to label the two major classes of interneuron in deep layer prelimbic PFC, based on expression of parvalbumin (PV-IN) or somatostatin (SST-IN). We then interrogated PV-IN and SST-IN membrane and synaptic physiology in a rodent model of binge drinking. Beginning in late adolescence, mice received 3-4 weeks of intermittent access (IA) ethanol. We prepared acute brain slices one day after the last drinking session. PV-INs but not SST-INs from IA ethanol mice displayed increased excitability relative to controls, regardless of sex. On the contrary, synaptic adaptations to PV-INs differed based on sex. While drinking decreased excitatory synaptic strength onto PV-INs from female mice, PV-INs from IA ethanol male mice exhibited potentiated excitatory transmission relative to controls. In contrast, decreased synaptic strength onto SST-INs was observed following IA ethanol in all groups of mice. Together, these findings illustrate novel sex differences in drinking-related PFC pathophysiology. Discovering means to restore PV-IN and SST-IN dysfunction following extended drinking provides opportunities for developing new treatments for all AUD patients.
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Affiliation(s)
- Max E Joffe
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA; Warren Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA; Vanderbilt Center for Addiction Research, Nashville, TN, 37232, USA.
| | - Danny G Winder
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA; Vanderbilt Center for Addiction Research, Nashville, TN, 37232, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - P Jeffrey Conn
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA; Warren Center for Neuroscience Drug Discovery, Nashville, TN, 37232, USA; Vanderbilt Center for Addiction Research, Nashville, TN, 37232, USA
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Dandaba M, Serra W, Harika-Germaneau G, Silvain C, Langbour N, Solinas M, Noël X, Jaafari N, Chatard A. Predicting relapse in patients with severe alcohol use disorder: The role of alcohol insight and implicit alcohol associations. Addict Behav 2020; 107:106433. [PMID: 32289744 DOI: 10.1016/j.addbeh.2020.106433] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 04/03/2020] [Accepted: 04/06/2020] [Indexed: 01/12/2023]
Abstract
Low insight is reported as a risk factor for relapse among patients treated for alcohol use disorders. However, to date, little is known on why patients with low insight are at higher risk for relapse. In this study, we tested the hypothesis that an implicit preference for alcohol over abstinence predicts relapse in patients with low, but not high, alcohol insight. Participants consisted of 77 patients who had received treatment for severe alcohol use disorder in a hospital in France. During hospitalization, they completed a self-report measure of insight and an implicit association test to assess implicit preference for alcohol over abstinence. The primary outcome was relapse assessed one month after discharge. Control variables were gender, age, cognitive deficit, anxiety, depression, craving, and impulsivity. Data were analysed using logistic regression analysis. After adjusting for demographic and clinical variables, relapse was predicted by the interaction between insight and implicit preference for alcohol but not by their main effects alone. Implicit preference for alcohol predicted relapse among patients with relatively low insight, but not among those with relatively high insight. These findings suggest that patients with low insight and strong implicit preference for alcohol are at a higher risk of relapse. Clinicians may therefore focus on and tailor specific interventions to prevent relapse in this vulnerable and at-risk population.
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Ganoderma lucidum Ameliorates Neurobehavioral Changes and Oxidative Stress Induced by Ethanol Binge Drinking. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2497845. [PMID: 32802260 PMCID: PMC7415090 DOI: 10.1155/2020/2497845] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/08/2020] [Accepted: 05/26/2020] [Indexed: 11/17/2022]
Abstract
Ganoderma lucidum, mushroom used for centuries by Asian peoples as food supplement, has been shown interesting biological activities, including over the Central Nervous System. Besides, these mushroom bioactive compounds present antioxidant and anti-inflammatory activities. On the side, binge drinking paradigm consists of ethanol exposure that reflects the usual consumption of adolescents, which elicits deleterious effects, determined by high ethanol consumption, in a short period. In this study, we investigated whether the Aqueous Extract of G. lucidum (AEGl) reduces the behavioral disorders induced by alcohol. Male (n = 30) and female Wistar rats (n = 40), seventy-two days old, were used for behavioral/biochemical and oral toxicity test, respectively. Animals were exposed to 5 binges (beginning at 35 days old) of ethanol (3 g/kg/day) or distilled water. Twenty-four hours after the last binge administration, animals received AEGl (100 mg/kg/day) or distilled water for three consecutive days. After treatment protocol, open field, elevated plus maze, forced swim, and step-down inhibitory avoidance tests were performed. Oxidative stress parameters were measured to evaluate the REDOX balance. Our results demonstrated that AEGl elicited the recovery of spontaneous horizontal exploration capacity, anxiogenic- and depressive-profile, as well as short-term memory damage induced by binge-ethanol exposure. The behavioral effects of the extract were associated to the reequilibrium of the animals' REDOX balance. Thus, AEGl, a medicinal mushroom, ameliorates behavioral alteration on a model of motor, cognitive and psychiatric-like disorders induced by binge drinking paradigm and emerges as a useful tool as a food supplement in the management of disorders of alcoholic origin.
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Kumar R, Kumar KJ, Benegal V, Roopesh BN, Ravi GS. Integrated intervention program for alcoholism improves impulsiveness and disadvantageous reward processing/risk-taking. Indian J Psychiatry 2020; 62:384-391. [PMID: 33165375 PMCID: PMC7597712 DOI: 10.4103/psychiatry.indianjpsychiatry_103_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/23/2020] [Accepted: 04/10/2020] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Impulsivity and aberrant reward processing are the core features of substance use disorders, including alcoholism. The present study examined the effects of an Integrated Intervention Program for Alcoholism (IIPA) on impulsiveness and disadvantageous reward processing/risk-taking in persons with alcoholism. MATERIALS AND METHODS The study adopted age- and education-matched (±1 year) randomized control design with the pre-post comparison. The sample comprised 50 persons with alcoholism. They were allotted randomly into two groups, the intervention (IIPA) group and treatment as usual (TAU) group (n = 25 in each). Participants were assessed at pre-intervention on impulsivity (Barratt's Impulsiveness Scale) and decision-making task, which reflects reward processing deficits (modified Iowa gambling task [mIGT]). The TAU group received usual treatment for alcoholism (i.e., pharmacotherapy; three sessions in a week group therapy on relapse prevention and six sessions in week yoga) for 18 days. The intervention group received IIPA along with usual treatment (except yoga). Outcome assessment was repeated after 18 days of intervention. RESULTS Both groups were comparable at pre-intervention (baseline). However, the intervention (IIPA) group showed a significant reduction in impulsivity and selection from disadvantageous decks on mIGT at post-intervention, while the TAU group had no significant change. CONCLUSION The findings suggest that IIPA could improve impulsivity and disadvantageous reward processing/risk-taking in persons with alcoholism. These are core features of substance use disorders and could pose a high chance for relapse after treatment. Further studies may examine improving these characteristics with IIPA and its impact on treatment outcomes such as relapse rate and maintaining sobriety.
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Affiliation(s)
- Rajesh Kumar
- Department of Clinical Psychology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Keshav J Kumar
- Department of Clinical Psychology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Vivek Benegal
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Bangalore N Roopesh
- Department of Clinical Psychology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Girikematha S Ravi
- Department of Biostatistics, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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Smith ML, Lopez MF, Wolen AR, Becker HC, Miles MF. Brain regional gene expression network analysis identifies unique interactions between chronic ethanol exposure and consumption. PLoS One 2020; 15:e0233319. [PMID: 32469986 PMCID: PMC7259766 DOI: 10.1371/journal.pone.0233319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/01/2020] [Indexed: 11/28/2022] Open
Abstract
Progressive increases in ethanol consumption is a hallmark of alcohol use disorder (AUD). Persistent changes in brain gene expression are hypothesized to underlie the altered neural signaling producing abusive consumption in AUD. To identify brain regional gene expression networks contributing to progressive ethanol consumption, we performed microarray and scale-free network analysis of expression responses in a C57BL/6J mouse model utilizing chronic intermittent ethanol by vapor chamber (CIE) in combination with limited access oral ethanol consumption. This model has previously been shown to produce long-lasting increased ethanol consumption, particularly when combining oral ethanol access with repeated cycles of intermittent vapor exposure. The interaction of CIE and oral consumption was studied by expression profiling and network analysis in medial prefrontal cortex, nucleus accumbens, hippocampus, bed nucleus of the stria terminalis, and central nucleus of the amygdala. Brain region expression networks were analyzed for ethanol-responsive gene expression, correlation with ethanol consumption and functional content using extensive bioinformatics studies. In all brain-regions studied the largest number of changes in gene expression were seen when comparing ethanol naïve mice to those exposed to CIE and drinking. In the prefrontal cortex, however, unique patterns of gene expression were seen compared to other brain-regions. Network analysis identified modules of co-expressed genes in all brain regions. The prefrontal cortex and nucleus accumbens showed the greatest number of modules with significant correlation to drinking behavior. Across brain-regions, however, many modules with strong correlations to drinking, both baseline intake and amount consumed after CIE, showed functional enrichment for synaptic transmission and synaptic plasticity.
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Affiliation(s)
- Maren L. Smith
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Marcelo F. Lopez
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Aaron R. Wolen
- Center for Clinical and Translational Research, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Howard C. Becker
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Department of Neuroscience, Medical University of South Carolina, Charleston, South Carolina, United States of America
- RHJ Department of Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
| | - Michael F. Miles
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, United States of America
- VCU Alcohol Research Center, Virginia Commonwealth University, Richmond, Virginia, United States of America
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Arinze I, Moorman DE. Selective impact of lateral orbitofrontal cortex inactivation on reinstatement of alcohol seeking in male Long-Evans rats. Neuropharmacology 2020; 168:108007. [PMID: 32092436 PMCID: PMC10373069 DOI: 10.1016/j.neuropharm.2020.108007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 12/12/2022]
Abstract
The orbitofrontal cortex (OFC) plays a fundamental role in motivated behavior and decision-making. In humans, OFC structure and function is significantly disrupted in drug using and dependent individuals, including those exhibiting chronic alcohol use and alcoholism. In animal models, the OFC has been shown to significantly influence the seeking of non-alcohol drugs of abuse. However direct investigations of the OFC during alcohol seeking and use have been more limited. In the studies reported here, we inactivated lateral (lOFC) or medial OFC (mOFC) subregions in rats during multiple stages of alcohol seeking. After one month of intermittent access to homecage 20% ethanol (EtOH), rats were trained to self-administer EtOH under an FR3 schedule and implanted with cannulae directed to lOFC or mOFC. We inactivated OFC subregions with baclofen/muscimol during EtOH self-administration, extinction, cue-induced reinstatement, and progressive ratio testing to broadly characterize the influence of these subregions on alcohol seeking. There were no significant effects of mOFC or lOFC inactivation during FR3 self-administration, extinction, or progressive ratio self-administration. However, lOFC, and not mOFC, inactivation significantly decreased cue-induced reinstatement of EtOH seeking. These findings contribute new information to the specific impact of OFC manipulation on operant alcohol seeking, support previous studies investigating the role of OFC in seeking and consumption of alcohol and other drugs of abuse, and indicate a specific role for lOFC vs. mOFC in reinstatement.
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Haass-Koffler CL. Protein Tyrosine Phosphatase β/ζ and Alcohol Use Disorder: A Commentary. Alcohol Clin Exp Res 2020; 44:1189-1191. [PMID: 32343842 DOI: 10.1111/acer.14346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/20/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Carolina L Haass-Koffler
- From the, Center for Alcohol and Addiction Studies, Brown University, Providence, Rhode Island.,Department of Psychiatry and Human Behavior, Werren Alpert Medical School, Brown University, Providence, Rhode Island.,Department of Behavioral and Social Sciences, School of Public Health, Brown University, Providence, Rhode Island
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Maxwell JR, Yellowhair TR, Davies S, Rogers DA, McCarson KL, Savage DD, Jantzie LL. Prenatal Alcohol Exposure and Chorioamnionitis Results in Microstructural Brain Injury in a Preclinical Investigation. ANNALS OF PEDIATRIC RESEARCH 2020; 4:1031. [PMID: 33073262 PMCID: PMC7560999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND Prenatal Alcohol Exposure (PAE) impacts 2% to 5% of infants born in the United States yearly. Women who consume alcohol during pregnancy have a five-fold increased rate of Chorioamnionitis (CHORIO). Both PAE and CHORIO cause microstructural injury to multiple brain regions including major white matter tracts. OBJECTIVE Utilizing two previously established animal models, we hypothesized that the combination of PAE+CHORIO would result in greater deficits in myelination and structural integrity than PAE alone. MATERIAL AND METHODS Pregnant Long-Evans rats voluntarily drank 5% ethanol or saccharin until Gestational Day 19 (GD). On GD19, CHORIO was induced in one group of PAE dams by a 30 min uterine artery occlusion and injection of Lipopolysaccharide (LPS) into each amniotic sac. The remaining PAE dams and saccharin controls underwent sham surgery. Pups were born on GD22 and weaned on Postnatal Day 24 (PD). On PD28, offspring were sacrificed, and their brains examined using ex-vivo Diffusion Tensor Imaging (DTI). RESULTS Compared to control, PAE alone did not affect offspring birth weights, mortality or any DTI measures. In contrast, PAE+CHORIO significantly reduced offspring survival and, in surviving pups, increased Radial Diffusivity (RD) in medial frontal cortex and decreased Fractional Anisotropy (FA) in medial and ventral frontal cortex and within capsular regions. CONCLUSION The combination of moderate PAE+CHORIO results in an increased mortality, concomitant with diffuse microstructural brain injury noted in young adolescent offspring at PD28. Future studies should examine the extent to which PAE exacerbates the damage caused by CHORIO alone and whether these deficits persist into adulthood.
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Affiliation(s)
- Jessie R Maxwell
- Department of Pediatrics, University of New Mexico, USA
- Department of Neurosciences, University of New Mexico, USA
| | | | - Suzy Davies
- Department of Neurosciences, University of New Mexico, USA
| | | | - Krystle L McCarson
- Department of Pediatrics, University of Arkansas for Medical Sciences, USA
| | - Daniel D Savage
- Department of Pediatrics, University of New Mexico, USA
- Department of Neurosciences, University of New Mexico, USA
| | - Lauren L Jantzie
- Department of Pediatrics, Johns Hopkins University School of Medicine, USA
- Department of Neurology, Johns Hopkins University School of Medicine, USA
- Kennedy Krieger Institute, USA
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Guggenmos M, Schmack K, Veer IM, Lett T, Sekutowicz M, Sebold M, Garbusow M, Sommer C, Wittchen HU, Zimmermann US, Smolka MN, Walter H, Heinz A, Sterzer P. A multimodal neuroimaging classifier for alcohol dependence. Sci Rep 2020; 10:298. [PMID: 31941972 PMCID: PMC6962344 DOI: 10.1038/s41598-019-56923-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/19/2019] [Indexed: 01/09/2023] Open
Abstract
With progress in magnetic resonance imaging technology and a broader dissemination of state-of-the-art imaging facilities, the acquisition of multiple neuroimaging modalities is becoming increasingly feasible. One particular hope associated with multimodal neuroimaging is the development of reliable data-driven diagnostic classifiers for psychiatric disorders, yet previous studies have often failed to find a benefit of combining multiple modalities. As a psychiatric disorder with established neurobiological effects at several levels of description, alcohol dependence is particularly well-suited for multimodal classification. To this aim, we developed a multimodal classification scheme and applied it to a rich neuroimaging battery (structural, functional task-based and functional resting-state data) collected in a matched sample of alcohol-dependent patients (N = 119) and controls (N = 97). We found that our classification scheme yielded 79.3% diagnostic accuracy, which outperformed the strongest individual modality – grey-matter density – by 2.7%. We found that this moderate benefit of multimodal classification depended on a number of critical design choices: a procedure to select optimal modality-specific classifiers, a fine-grained ensemble prediction based on cross-modal weight matrices and continuous classifier decision values. We conclude that the combination of multiple neuroimaging modalities is able to moderately improve the accuracy of machine-learning-based diagnostic classification in alcohol dependence.
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Affiliation(s)
- Matthias Guggenmos
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
| | - Katharina Schmack
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Ilya M Veer
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Tristram Lett
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Maria Sekutowicz
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Miriam Sebold
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Maria Garbusow
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Christian Sommer
- Department of Psychiatry and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - Hans-Ulrich Wittchen
- Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany.,Department of Psychiatry and Psychotherapy, Ludwig Maximilans Universität Munich, Munich, Germany
| | - Ulrich S Zimmermann
- Department of Psychiatry and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - Michael N Smolka
- Department of Psychiatry and Psychotherapy, Technische Universität Dresden, Dresden, Germany.,Neuroimaging Center, Technische Universität Dresden, Dresden, Germany
| | - Henrik Walter
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Philipp Sterzer
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Karabanowicz E, Tyburski E, Karasiewicz K, Sokołowski A, Mak M, Folkierska-Żukowska M, Radziwiłłowicz W. Metaphor Processing Dysfunctions in Schizophrenia Patients With and Without Substance Use Disorders. Front Psychiatry 2020; 11:331. [PMID: 32390887 PMCID: PMC7193109 DOI: 10.3389/fpsyt.2020.00331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/02/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Patients with schizophrenia have difficulties comprehending metaphors, which significantly impedes communication. However, this topic has not been thoroughly studied in people with a dual diagnosis. On this basis, we formulated two research aims: a) to compare the ability to comprehend metaphors in schizophrenia patients without (SZ) and with substance use disorder (SZ-SUD) and b) to determine the relationship between the processing of metaphorical content and the severity of psychopathological symptoms in both clinical groups. METHODS A total of 40 individuals with SZ and 40 individuals with SZ-SUD took part in the study. The control group was composed of 40 individuals without a psychiatric or neurological diagnosis. Four subtests from the Right Hemisphere Language Battery (Picture Metaphor Test, Written Metaphor Test, Picture Metaphor Explanation Test, Written Metaphor Explanation Test) were used to measure the ability to understand and explain metaphors. RESULTS Both groups of individuals with schizophrenia (SZ and SZ-SUD) scored lower than individuals from the control group on all tests of metaphor processing. However, no differences were observed between the two clinical groups. SZ-SUD patients had better results for Picture Metaphor Explanation than for Written Metaphor Explanation. Negative symptoms were found to be significant predictors of difficulties with understanding and explaining metaphors. CONCLUSION Individuals with schizophrenia, regardless of their substance use disorder (SUD) status, exhibit impaired metaphorical content processing. SUD in schizophrenia is not associated with significant impairments in understanding and explaining metaphorical content. Moreover, impairments in processing metaphorical content are associated with more severe negative symptoms of schizophrenia.
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Affiliation(s)
- Ewa Karabanowicz
- Institute of Psychology, University of Szczecin, Szczecin, Poland
| | - Ernest Tyburski
- Institute of Psychology, SWPS University of Social Sciences and Humanities, Poznan, Poland
| | | | - Andrzej Sokołowski
- Department of Neurology, Memory and Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, United States
| | - Monika Mak
- Independent Clinical Psychology Unit, Pomeranian Medical University, Szczecin, Poland
| | - Monika Folkierska-Żukowska
- Interdisciplinary Centre for Behavioural Genetics Research, Faculty of Psychology, University of Warsaw, Warsaw, Poland
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Abdullina AA, Vasileva EV, Kondrakhin EA, Kovalev GI. The Involvement of the Serotonin, Glutamate, and GABA Receptors in the Manifestation of the Antidepressant-Like Effect of Cycloprolylglycine. NEUROCHEM J+ 2019. [DOI: 10.1134/s1819712419030024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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49
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Safati AB, Hall PA. Contextual cues as modifiers of cTBS effects on indulgent eating. Brain Stimul 2019; 12:1253-1260. [DOI: 10.1016/j.brs.2019.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/20/2019] [Accepted: 05/01/2019] [Indexed: 11/27/2022] Open
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50
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Mohammed S, Dey DK, Zhang Y. Bayesian variable selection using spike‐and‐slab priors with application to high dimensional electroencephalography data by local modelling. J R Stat Soc Ser C Appl Stat 2019. [DOI: 10.1111/rssc.12369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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