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DeCristofano L, Decker S, Schulte MK, Suryanarayanan A. Desformylflustrabromine (dFBr), a positive allosteric modulator of the α 4β 2 nicotinic receptor modulates the hypnotic response to ethanol. Alcohol 2021; 93:35-44. [PMID: 33652092 DOI: 10.1016/j.alcohol.2021.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/01/2021] [Accepted: 02/22/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Binge drinking can increase an individual's risk of developing alcohol use disorder (AUD). Ethanol targets multiple neurotransmitter systems; however, not much is known about its effects on the cholinergic system. Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels, the heteromeric α4β2 nAChR being a commonly expressed subtype. Desformylflustrabromine (dFBr), a positive allosteric modulator (PAM), increases the efficacy of α4β2 nAChR in vitro and has previously been shown to have translational potential. In this study, we investigated whether dFBr modulates the hypnotic response to ethanol. METHODS Ethanol-induced loss of righting reflex (LORR) duration was measured in the presence and absence of dFBr. The β2 nAChR selective antagonist dihydro-β-erythroidine (DHβE) was used to study the involvement of the β2 subunit. Additionally, we used a crosslinking-based western blot assay to estimate changes in total versus intracellular α4 nAChR protein in thalamic tissue of rats treated with vehicle, dFBr, ethanol, or ethanol and dFBr. Lastly, using Xenopus oocyte two-electrode voltage clamp (TEVC) studies, we determined the effects of ethanol and dFBr on α4β2 nAChR. RESULTS Pretreatment with 6 mg/kg dFBr reduced ethanol-induced LORR duration as compared to rats treated with ethanol alone. LORR studies with DHβE suggest that dFBr reduced ethanol-induced LORR duration via the β2 nAChR subunit. Crosslinking-based western analyses revealed that ethanol caused early increases in total and presumably surface thalamic α4 nAChR subunit protein levels. This ethanol-induced α4 nAChR upregulation was significantly reduced in rats pretreated with 6 mg/kg dFBr. In TEVC studies, ethanol potentiated ACh-induced currents in α4β2 nAChR, while it slightly reduced dFBr potentiation of maximal ACh currents. CONCLUSIONS Our results suggest that thalamic nAChRs containing the α4 subunit are rapidly upregulated by a single intoxicating dose of ethanol. Furthermore, dFBr, an α4β2 nAChR-selective PAM, significantly attenuates the hypnotic response to ethanol via actions on β2 nAChR. Overall, these results indicate that dFBr represents an option to reverse ethanol intoxication.
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Fructuoso M, Gu YC, Kassis N, de Lagran MM, Dierssen M, Janel N. Ethanol-Induced Changes in Brain of Transgenic Mice Overexpressing DYRK1A. Mol Neurobiol 2020; 57:3195-3205. [PMID: 32504418 DOI: 10.1007/s12035-020-01967-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 05/29/2020] [Indexed: 12/01/2022]
Abstract
Alcoholism is a chronic relapsing disorder defined by loss of control over excessive consumption of ethanol despite damaging effects on the liver and brain. We previously showed that the overexpression in mice of Dyrk1A (TgDyrk1A, for dual-specificity tyrosine (Y) phosphorylation-regulated kinase 1A) reduces the severity of alcohol mediated liver injury. Ethanol consumption has also been associated with increased brain glutamate concentration that led to therapies targeting glutamatergic receptors and normalization of glutamatergic neurotransmission. Interestingly, mice overexpressing Dyrk1A (TgDyrk1A mice) present a reduction of glutamatergic brain transmission, which we propose could be protective against alcohol intake. To answer this question, we investigated the ethanol preference in TgDyrk1A mice using a two-bottle choice paradigm. TgDyrk1A mice showed a non-significant decrease of voluntary ethanol intake and ethanol preference compared with wild-type mice. At the peripheral level, mice overexpressing Dyrk1A show lower ethanol plasma levels, indicating a faster ethanol metabolism. At the end of the protocol, lasting 21 days, brains were extracted for protein analysis. Ethanol reduced levels of the synaptic protein PSD-95 and increased the glutamate decarboxylase GAD65, specifically in the cortex of TgDyrk1A mice. Our results suggest that overexpression of DYRK1A may cause different ethanol-induced changes in the brain.
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Affiliation(s)
- Marta Fructuoso
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Pompeu Fabra University (Universitat Pompeu Fabra, UPF), 08003, Barcelona, Spain
- Institut du Cerveau et la Moelle épinière, ICM, INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Paris, France
| | - Yu Chen Gu
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France
| | - Nadim Kassis
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France
| | - Maria Martinez de Lagran
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Pompeu Fabra University (Universitat Pompeu Fabra, UPF), 08003, Barcelona, Spain
| | - Mara Dierssen
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Pompeu Fabra University (Universitat Pompeu Fabra, UPF), 08003, Barcelona, Spain
- Human Pharmacology and Clinical Neurosciences Research Group, Neurosciences Research Program, Hospital Del Mar Medical Research Institute (IMIM), 08003, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- Department of Statistics and Operations Research, Universitat Politècnica de Catalunya BarcelonaTech, Barcelona, Spain
| | - Nathalie Janel
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France.
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Reséndiz‐Flores M, Escobar C. Circadian disruption favors alcohol consumption and differential ΔFosB accumulation in Corticolimbic structures. Addict Biol 2019; 24:1179-1190. [PMID: 30295391 DOI: 10.1111/adb.12674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 01/23/2023]
Abstract
Shift-work and exposure to light at night lead to circadian disruption, which favors the use of alcohol and may be a risk factor for development of addictive behavior. This study evaluated in two experimental models of circadian disruption behavioral indicators of elevated alcohol intake and looked for ΔFosB, which is a transcription factor for neuronal plasticity in corticolimbic structures. Male Wistar rats were exposed to experimental shift-work (AR) or to constant light (LL) and were compared with a control group (LD). After 4 weeks in their corresponding conditions, control LD rats remained rhythmic, AR rats exhibited a loss of day-night patterns in the brain and the LL rats showed arrhythmicity in general activity and day-night PER1 patterns in corticolimbic structures. During 12 days of exposure to 10 percent alcohol solution, the AR group showed daily increased alcohol intake while LD and LL rats ingested similar amounts. After 72 h of alcohol deprivation, AR and LL rats increased alcohol intake in a binge-like test; this could be due not only to circadian disruption but also to stress and/or anxiety developed from the AR and LL manipulations. Associated to the increased alcohol intake, the AR and LL rats had significant accumulation of ΔFosB in the nucleus accumbens shell and decreased ΔFosB in the infralimbic cortex. Data here reported confirm that the disruption of temporal patterns favors the increased alcohol consumption and that this is associated with a differential accumulation of ΔFosB which may favor the development of addictive behavior.
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Affiliation(s)
| | - Carolina Escobar
- Departamento de Anatomía, Facultad de MedicinaUniversidad Nacional Autónoma de México Mexico
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A comparison of implicit and explicit reward learning in low risk alcohol users versus people who binge drink and people with alcohol dependence. Addict Behav Rep 2019; 9:100178. [PMID: 31193786 PMCID: PMC6542748 DOI: 10.1016/j.abrep.2019.100178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 03/21/2019] [Indexed: 12/21/2022] Open
Abstract
Chronic alcohol use leads to specific neurobiological alterations in the dopaminergic brain reward system, which probably are leading to a reward deficiency syndrome in alcohol dependence. The purpose of our study was to examine the effects of such hypothesized neurobiological alterations on the behavioral level, and more precisely on the implicit and explicit reward learning. Alcohol users were classified as dependent drinkers (using the DSM-IV criteria), binge drinkers (using criteria of the USA National Institute on Alcohol Abuse and Alcoholism) or low-risk drinkers (following recommendations of the Scientific board of trustees of the German Health Ministry). The final sample (n = 94) consisted of 36 low-risk alcohol users, 37 binge drinkers and 21 abstinent alcohol dependent patients. Participants were administered a probabilistic implicit reward learning task and an explicit reward- and punishment-based trial-and-error-learning task. Alcohol dependent patients showed a lower performance in implicit and explicit reward learning than low risk drinkers. Binge drinkers learned less than low-risk drinkers in the implicit learning task. The results support the assumption that binge drinking and alcohol dependence are related to a chronic reward deficit. Binge drinking accompanied by implicit reward learning deficits could increase the risk for the development of an alcohol dependence. Alcohol dependent patients were impaired in implicit and explicit reward learning. Alcohol dependence may lead to implicit and explicit reward learning deficits. Binge drinkers learned less than low-risk drinkers in the implicit learning task. Binge drinking is related to implicit reward learning deficits.
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Belém-Filho IJA, Ribera PC, Nascimento AL, Gomes ARQ, Lima RR, Crespo-Lopez ME, Monteiro MC, Fontes-Júnior EA, Lima MO, Maia CSF. Low doses of methylmercury intoxication solely or associated to ethanol binge drinking induce psychiatric-like disorders in adolescent female rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 60:184-194. [PMID: 29734102 DOI: 10.1016/j.etap.2018.04.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/24/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Methylmercury (MeHg) is an environmental contaminant that provokes damage to developing brain. Simultaneously, the consumption of ethanol among adolescents has increased. Evidence concerning the effects of MeHg low doses per se or associated with ethanol during adolescence are scarce. Thus, we investigate behavioral disorders resulted from exposure to MeHg low doses and co-intoxicated with ethanol in adolescent rats. Wistar rats received chronic exposure to low doses of MeHg (40 μg/kg/day for 5 weeks) and/or ethanol binge drinking (3 g/kg/day at 3 days per week for 5 weeks). Animals were submitted to behavioral assays to assess emotionality and cognitive function. Total mercury content was evaluated in the brain and hair. Oxidative parameters were analyzed in blood samples. MeHg at low doses or associated to ethanol binge drinking produced psychiatric-like disorders and cognitive impairment. Peripherally, MeHg altered oxidative parameters when associated to ethanol. Ethanol administration reduced brain mercury deposit. We proposed that ethanol reduces the necessity of mercury tissue levels to display psychiatric-like disorders/cognitive impairment.
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Affiliation(s)
| | - Paula Cardoso Ribera
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Aline Lima Nascimento
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | - Rafael Rodrigues Lima
- Laboratório de Biologia Funcional e Estrutural, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Maria Elena Crespo-Lopez
- Laboratório de Ensaios In Vitro, Imunologia e Microbiologia, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Marta Chagas Monteiro
- Laboratório de Farmacologia Molecular, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Enéas Andrade Fontes-Júnior
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Marcelo Oliveira Lima
- Laboratório de Toxicologia, Seção de Meio Ambiente, Instituto Evandro Chagas, Belém, Pará, Brazil
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Belmer A, Patkar OL, Pitman KM, Bartlett SE. Serotonergic Neuroplasticity in Alcohol Addiction. Brain Plast 2016; 1:177-206. [PMID: 29765841 PMCID: PMC5928559 DOI: 10.3233/bpl-150022] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Alcohol addiction is a debilitating disorder producing maladaptive changes in the brain, leading drinkers to become more sensitive to stress and anxiety. These changes are key factors contributing to alcohol craving and maintaining a persistent vulnerability to relapse. Serotonin (5-Hydroxytryptamine, 5-HT) is a monoamine neurotransmitter widely expressed in the central nervous system where it plays an important role in the regulation of mood. The serotonin system has been extensively implicated in the regulation of stress and anxiety, as well as the reinforcing properties of all of the major classes of drugs of abuse, including alcohol. Dysregulation within the 5-HT system has been postulated to underlie the negative mood states associated with alcohol use disorders. This review will describe the serotonergic (5-HTergic) neuroplastic changes observed in animal models throughout the alcohol addiction cycle, from prenatal to adulthood exposure. The first section will focus on alcohol-induced 5-HTergic neuroadaptations in offspring prenatally exposed to alcohol and the consequences on the regulation of stress/anxiety. The second section will compare alterations in 5-HT signalling induced by acute or chronic alcohol exposure during adulthood and following alcohol withdrawal, highlighting the impact on the regulation of stress/anxiety signalling pathways. The third section will outline 5-HTergic neuroadaptations observed in various genetically-selected ethanol preferring rat lines. Finally, we will discuss the pharmacological manipulation of the 5-HTergic system on ethanol- and anxiety/stress-related behaviours demonstrated by clinical trials, with an emphasis on current and potential treatments.
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Affiliation(s)
- Arnauld Belmer
- Translational Research Institute, Queensland University of Technology, Brisbane, Australia.,Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, Australia
| | - Omkar L Patkar
- Translational Research Institute, Queensland University of Technology, Brisbane, Australia.,Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, Australia
| | - Kim M Pitman
- Translational Research Institute, Queensland University of Technology, Brisbane, Australia.,Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, Australia
| | - Selena E Bartlett
- Translational Research Institute, Queensland University of Technology, Brisbane, Australia.,Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, Australia
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Bell RL, Hauser S, Rodd ZA, Liang T, Sari Y, McClintick J, Rahman S, Engleman EA. A Genetic Animal Model of Alcoholism for Screening Medications to Treat Addiction. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2016; 126:179-261. [PMID: 27055615 PMCID: PMC4851471 DOI: 10.1016/bs.irn.2016.02.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The purpose of this review is to present up-to-date pharmacological, genetic, and behavioral findings from the alcohol-preferring P rat and summarize similar past work. Behaviorally, the focus will be on how the P rat meets criteria put forth for a valid animal model of alcoholism with a highlight on its use as an animal model of polysubstance abuse, including alcohol, nicotine, and psychostimulants. Pharmacologically and genetically, the focus will be on the neurotransmitter and neuropeptide systems that have received the most attention: cholinergic, dopaminergic, GABAergic, glutamatergic, serotonergic, noradrenergic, corticotrophin releasing hormone, opioid, and neuropeptide Y. Herein, we sought to place the P rat's behavioral and neurochemical phenotypes, and to some extent its genotype, in the context of the clinical literature. After reviewing the findings thus far, this chapter discusses future directions for expanding the use of this genetic animal model of alcoholism to identify molecular targets for treating drug addiction in general.
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Affiliation(s)
- R L Bell
- Institute of Psychiatric Research, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - S Hauser
- Institute of Psychiatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Z A Rodd
- Institute of Psychiatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - T Liang
- Indiana University School of Medicine, Indianapolis, IN, United States
| | - Y Sari
- University of Toledo, Toledo, OH, United States
| | - J McClintick
- Center for Medical Genomics, Indiana University School of Medicine, Indianapolis, IN, United States
| | - S Rahman
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD, United States
| | - E A Engleman
- Institute of Psychiatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
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8
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Rasgrf2 controls noradrenergic involvement in the acute and subchronic effects of alcohol in the brain. Psychopharmacology (Berl) 2014; 231:4199-209. [PMID: 24737505 DOI: 10.1007/s00213-014-3562-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/26/2014] [Indexed: 10/25/2022]
Abstract
RATIONALE Alcohol addiction is a major psychiatric disease, and yet, the underlying molecular adaptations in the brain remain unclear. Recent evidence suggests a functional role for the ras-specific guanine-nucleotide releasing factor 2 (Rasgrf2) in alcoholism. Rasgrf2(-/-) mice consume less alcohol and show entirely absent dopamine responses to an alcohol challenge compared to wild types (WT). OBJECTIVE In order to further investigate how Rasgrf2 modifies the acute and subchronic effects of alcohol in the brain, we investigated its effects on the noradrenergic and serotonergic systems. METHODS We measured noradrenaline and serotonin activity in the brain by in vivo microdialysis and RNA expression by chip analysis and RT-PCR after acute and sub-chronic alcohol exposure in Rasgrf2(-/-) and WT mice. RESULTS In vivo microdialysis showed a significantly reduced noradrenergic response and an absent serotonergic response in the nucleus accumbens (NAcc) and caudate putamen (CPu) after an alcohol challenge in Rasgrf2(-/-) mice. A co-expression analysis showed that there is a high correlation between Rasgrf2 and α2 adrenoceptor RNA expression in the ventral striatum in naïve animals. Accordingly, we further assessed the role of Rasgrf2 in the response of the noradrenergic system to subchronic alcohol exposure. A decrease in β1 adrenoceptor gene expression was seen in Rasgrf2(+/+), but not Rasgrf2(-/-) mice following alcohol exposure. Conversely, alcohol resulted in a decrease in both β2 and α2 adrenoceptor gene expression in knockout but not WT Rasgrf2 mice. CONCLUSIONS These findings suggest that adaptations in the noradrenergic system contribute to the Rasgrf2 enhanced risk of alcoholism.
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Carvajal F, Sanchez-Amate MDC, Lerma-Cabrera JM, Cubero I. Effects of a single high dose of Chlorpyrifos in long-term feeding, ethanol consumption and ethanol preference in male Wistar rats with a previous history of continued ethanol drinking. J Toxicol Sci 2014; 39:425-35. [DOI: 10.2131/jts.39.425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Francisca Carvajal
- Department of Psychology, Universidad Autónoma de Chile
- Department of Psychology, Universidad de Almería
| | | | - José Manuel Lerma-Cabrera
- Department of Psychology, Universidad Autónoma de Chile
- Department of Psychology, Universidad de Almería
| | - Inmaculada Cubero
- Department of Psychology, Universidad Autónoma de Chile
- Department of Psychology, Universidad de Almería
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Easton AC, Lucchesi W, Lourdusamy A, Lenz B, Solati J, Golub Y, Lewczuk P, Fernandes C, Desrivieres S, Dawirs RR, Moll GH, Kornhuber J, Frank J, Hoffmann P, Soyka M, Kiefer F, Schumann G, Peter Giese K, Müller CP, Treutlein J, Cichon S, Ridinger M, Mattheisen P, Herms S, Wodarz N, Zill P, Maier W, Mössner R, Gaebel W, Dahmen N, Scherbaum N, Schmäl C, Steffens M, Lucae S, Ising M, Müller-Myhsok B, Nöthen MM, Mann K, Rietschel M. αCaMKII autophosphorylation controls the establishment of alcohol drinking behavior. Neuropsychopharmacology 2013; 38:1636-47. [PMID: 23459588 PMCID: PMC3717547 DOI: 10.1038/npp.2013.60] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 01/22/2013] [Accepted: 02/04/2013] [Indexed: 11/09/2022]
Abstract
The α-Ca(2+)/calmodulin-dependent protein kinase II (αCaMKII) is a crucial enzyme controlling plasticity in the brain. The autophosphorylation of αCaMKII works as a 'molecular memory' for a transient calcium activation, thereby accelerating learning. We investigated the role of αCaMKII autophosphorylation in the establishment of alcohol drinking as an addiction-related behavior in mice. We found that alcohol drinking was initially diminished in αCaMKII autophosphorylation-deficient αCaMKII(T286A) mice, but could be established at wild-type level after repeated withdrawals. The locomotor activating effects of a low-dose alcohol (2 g/kg) were absent in αCaMKII(T286A) mice, whereas the sedating effects of high-dose (3.5 g/kg) were preserved after acute and subchronic administration. The in vivo microdialysis revealed that αCaMKII(T286A) mice showed no dopamine (DA) response in the nucleus accumbens to acute or subchronic alcohol administration, but enhanced serotonin (5-HT) responses in the prefrontal cortex. The attenuated DA response in αCaMKII(T286A) mice was in line with altered c-Fos activation in the ventral tegmental area after acute and subchronic alcohol administration. In order to compare findings in mice with the human condition, we tested 23 single-nucleotide polymorphisms (SNPs) in the CAMK2A gene for their association with alcohol dependence in a population of 1333 male patients with severe alcohol dependence and 939 controls. We found seven significant associations between CAMK2A SNPs and alcohol dependence, one of which in an autophosphorylation-related area of the gene. Together, our data suggest αCaMKII autophosphorylation as a facilitating mechanism in the establishment of alcohol drinking behavior with changing the DA-5-HT balance as a putative mechanism.
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Affiliation(s)
- Alanna C Easton
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - Walter Lucchesi
- Centre for the Cellular Basis of Behavior, MRC Centre for Neurodegeneration Research, Institute of Psychiatry, King's College London, James Black Centre, London, UK
| | - Anbarasu Lourdusamy
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - Bernd Lenz
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jalal Solati
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany,Department of Biology, Faculty of Science, Islamic Azad University, Karaj, Iran
| | - Yulia Golub
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
| | - Piotr Lewczuk
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany
| | - Cathy Fernandes
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - Sylvane Desrivieres
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - Ralph R Dawirs
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
| | - Gunther H Moll
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany
| | - Josef Frank
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Per Hoffmann
- Institute of Human Genetics, Life & Brain Center, University of Bonn, Bonn, Germany
| | - Michael Soyka
- Psychiatric Hospital, University of Munich, Munich, Germany
| | - Falk Kiefer
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Gunter Schumann
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - K Peter Giese
- Centre for the Cellular Basis of Behavior, MRC Centre for Neurodegeneration Research, Institute of Psychiatry, King's College London, James Black Centre, London, UK
| | - Christian P Müller
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK,Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany,Section of Addiction Medicine, Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Schwabachanlage 6, Erlangen 91054, Germany, Tel: +49 9131 85 36896, Fax: +49 9131 85 36002, E-mail:
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11
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George O, Le Moal M, Koob GF. Allostasis and addiction: role of the dopamine and corticotropin-releasing factor systems. Physiol Behav 2012; 106:58-64. [PMID: 22108506 PMCID: PMC3288230 DOI: 10.1016/j.physbeh.2011.11.004] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 10/31/2011] [Accepted: 11/02/2011] [Indexed: 11/16/2022]
Abstract
Allostasis, originally conceptualized to explain persistent morbidity of arousal and autonomic function, is defined as the process of achieving stability through physiological or behavioral change. Two types of biological processes have been proposed to describe the mechanisms underlying allostasis in drug addiction, a within-system adaptation and a between-system adaptation. In the within-system process, the drug elicits an opposing, neutralizing reaction within the same system in which the drug elicits its primary and unconditioned reinforcing actions, while in the between-system process, different neurobiological systems that the one initially activated by the drug are recruited. In this review, we will focus our interest on alterations in the dopaminergic and corticotropin releasing factor systems as within-system and between-system neuroadaptations respectively, that underlie the opponent process to drugs of abuse. We hypothesize that repeated compromised activity in the dopaminergic system and sustained activation of the CRF-CRF1R system with withdrawal episodes may lead to an allostatic load contributing significantly to the transition to drug addiction.
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Affiliation(s)
- Olivier George
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA.
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12
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Fahlke C, Berggren U, Berglund KJ, Zetterberg H, Blennow K, Engel JA, Balldin J. Neuroendocrine Assessment of Serotonergic, Dopaminergic, and Noradrenergic Functions in Alcohol-Dependent Individuals. Alcohol Clin Exp Res 2011; 36:97-103. [DOI: 10.1111/j.1530-0277.2011.01598.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Barak S, Carnicella S, Yowell QV, Ron D. Glial cell line-derived neurotrophic factor reverses alcohol-induced allostasis of the mesolimbic dopaminergic system: implications for alcohol reward and seeking. J Neurosci 2011; 31:9885-94. [PMID: 21734280 PMCID: PMC3144766 DOI: 10.1523/jneurosci.1750-11.2011] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 05/16/2011] [Accepted: 05/19/2011] [Indexed: 11/21/2022] Open
Abstract
We previously showed that infusion of glial cell line-derived neurotrophic factor (GDNF) into the ventral tegmental area (VTA) rapidly reduces alcohol intake and relapse (Carnicella et al., 2008, 2009a), and increases dopamine (DA) levels in the nucleus accumbens (NAc) of alcohol-naive rats (Wang et al., 2010). Withdrawal from excessive alcohol intake is associated with a reduction in NAc DA levels, whereas drug-induced increases in NAc DA levels are associated with reward. We therefore tested whether GDNF in the VTA reverses alcohol withdrawal-associated DA deficiency and/or possesses rewarding properties. Rats were trained for 7 weeks to consume high levels of alcohol (5.47 ± 0.37 g/kg/24 h) in intermittent access to 20% alcohol in a two-bottle choice procedure. Using in vivo microdialysis, we show that 24 h withdrawal from alcohol causes a substantial reduction in NAc DA overflow, which was reversed by intra-VTA GDNF infusion. Using conditioned place preference (CPP) paradigm, we observed that GDNF on its own does not induce CPP, suggesting that the growth factor is not rewarding. However, GDNF blocked acquisition and expression of alcohol-CPP. In addition, GDNF induced a downward shift in the dose-response curve for operant self-administration of alcohol, further suggesting that GDNF suppresses, rather than substitutes for, the reinforcing effects of alcohol. Our findings suggest that GDNF reduces alcohol-drinking behaviors by reversing an alcohol-induced allostatic DA deficiency in the mesolimbic system. In addition, as it lacks abuse liability, the study further highlights GDNF as a promising target for treatment of alcohol use/abuse disorders.
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Affiliation(s)
- Segev Barak
- The Ernest Gallo Research Center, Department of Neurology, University of California, San Francisco, Emeryville, California 94608
| | - Sebastien Carnicella
- The Ernest Gallo Research Center, Department of Neurology, University of California, San Francisco, Emeryville, California 94608
| | - Quinn V. Yowell
- The Ernest Gallo Research Center, Department of Neurology, University of California, San Francisco, Emeryville, California 94608
| | - Dorit Ron
- The Ernest Gallo Research Center, Department of Neurology, University of California, San Francisco, Emeryville, California 94608
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14
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Zhao ZL, Zhao GW, Li HZ, Yang XD, Wu YY, Lin F, Guan LX, Zhai FG, Liu JQ, Yang CH, Kim SC, Kim KW, Zhao RJ. Acupuncture Attenuates Anxiety-Like Behavior by Normalizing Amygdaloid Catecholamines during Ethanol Withdrawal in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:429843. [PMID: 21869897 PMCID: PMC3159395 DOI: 10.1093/ecam/neq045] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2010] [Accepted: 04/09/2010] [Indexed: 01/19/2023]
Abstract
Previously, we demonstrated acupuncture at acupoint HT7 (Shen-Men) attenuated ethanol withdrawal syndrome by normalizing the dopamine release in nucleus accumbens shell. In the present study, we investigated the effect of acupuncture on anxiety-like behavior in rats and its relevant mechanism by studying neuro-endocrine parameters during ethanol withdrawal. Rats were treated with 3 g kg(-1)day(-1) of ethanol (20%, w/v) or saline by intraperitoneal injections for 28 days. The rats undergoing ethanol withdrawal exhibited anxiety-like behavior 72 h after the last dose of ethanol characterized by the decrease of time spent in the open arms of the elevated plus maze compared with the saline-treated rats (P < .05). Radioimmunoassay exhibited there were notably increased concentrations of plasma corticosterone in ethanol-withdrawn rats compared with saline-treated rats (P < .05). Additionally, high performance liquid chromatography analysis also showed the levels of norepinephrine and 3-methoxy-4-hydroxy-phenylglycol were markedly increased while the levels of dopamine and 3,4-dihydroxyphenylacetic acid were significantly decreased in the central nucleus of the amygdala of ethanol-withdrawn rats compared with saline-treated rats (P < .01). Acupuncture groups were treated with acupuncture at acupoint HT7 or PC6 (Nei-Guan). Acupuncture at HT7 but not PC6 greatly attenuated the anxiety-like behavior during ethanol withdrawal as evidenced by significant increases in the percentage of time spent in open arms (P < .05). In the meantime, acupuncture at HT7 also markedly inhibited the alterations of neuro-endocrine parameters induced by ethanol withdrawal (P < .05). These results suggest that acupuncture may attenuate anxiety-like behavior during ethanol withdrawal through regulation of neuro-endocrine system.
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Affiliation(s)
- Zheng Lin Zhao
- Department of Pharmacology, Mudanjiang Medical University, Mudanjiang 157011, China
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15
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Saba A, Chiellini G, Frascarelli S, Marchini M, Ghelardoni S, Raffaelli A, Tonacchera M, Vitti P, Scanlan TS, Zucchi R. Tissue distribution and cardiac metabolism of 3-iodothyronamine. Endocrinology 2010; 151:5063-73. [PMID: 20739399 DOI: 10.1210/en.2010-0491] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
3-iodothyronamine (T1AM) is a novel relative of thyroid hormone, able to interact with specific G protein-coupled receptors, known as trace amine-associated receptors. Significant functional effects are produced by exogenous T1AM, including a negative inotropic and chronotropic effect in cardiac preparations. This work was aimed at estimating endogenous T1AM concentration in different tissues and determining its cardiac metabolism. A novel HPLC tandem mass spectrometry assay was developed, allowing detection of T1AM, thyronamine, 3-iodothyroacetic acid, and thyroacetic acid. T1AM was detected in rat serum, at the concentration of 0.3±0.03 pmol/ml, and in all tested organs (heart, liver, kidney, skeletal muscle, stomach, lung, and brain), at concentrations significantly higher than the serum concentration, ranging from 5.6±1.5 pmol/g in lung to 92.9±28.5 pmol/g in liver. T1AM was also identified for the first time in human blood. In H9c2 cardiomyocytes and isolated perfused rat hearts, significant Na+-dependent uptake of exogenous T1AM was observed, and at the steady state total cellular or tissue T1AM concentration exceeded extracellular concentration by more than 20-fold. In both preparations T1AM underwent oxidative deamination to 3-iodothyroacetic acid. T1AM deamination was inhibited by iproniazid but not pargyline or semicarbazide, suggesting the involvement of both monoamine oxidase and semicarbazide-sensitive amine oxidase. Thyronamine and thyroacetic acid were not detected in heart. Finally, evidence of T1AM production was observed in cardiomyocytes exposed to exogenous thyroid hormone, although the activity of this pathway was very low.
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Affiliation(s)
- Alessandro Saba
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Roma 55, 56126 Pisa, Italy
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16
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Saba A, Chiellini G, Frascarelli S, Marchini M, Ghelardoni S, Raffaelli A, Tonacchera M, Vitti P, Scanlan TS, Zucchi R. Tissue Distribution and Cardiac Metabolism of 3-Iodothyronamine. Endocrinology 2010. [DOI: 10.1210/en.2010-0491 pmid: 20739399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
3-Iodothyronamine (T1AM) is a novel relative of thyroid hormone, able to interact with specific G protein-coupled receptors, known as trace amine-associated receptors. Significant functional effects are produced by exogenous T1AM, including a negative inotropic and chronotropic effect in cardiac preparations. This work was aimed at estimating endogenous T1AM concentration in different tissues and determining its cardiac metabolism. A novel HPLC tandem mass spectrometry assay was developed, allowing detection of T1AM, thyronamine, 3-iodothyroacetic acid, and thyroacetic acid. T1AM was detected in rat serum, at the concentration of 0.3 ± 0.03 pmol/ml, and in all tested organs (heart, liver, kidney, skeletal muscle, stomach, lung, and brain), at concentrations significantly higher than the serum concentration, ranging from 5.6 ± 1.5 pmol/g in lung to 92.9 ± 28.5 pmol/g in liver. T1AM was also identified for the first time in human blood. In H9c2 cardiomyocytes and isolated perfused rat hearts, significant Na+-dependent uptake of exogenous T1AM was observed, and at the steady state total cellular or tissue T1AM concentration exceeded extracellular concentration by more than 20-fold. In both preparations T1AM underwent oxidative deamination to 3-iodothyroacetic acid. T1AM deamination was inhibited by iproniazid but not pargyline or semicarbazide, suggesting the involvement of both monoamine oxidase and semicarbazide-sensitive amine oxidase. Thyronamine and thyroacetic acid were not detected in heart. Finally, evidence of T1AM production was observed in cardiomyocytes exposed to exogenous thyroid hormone, although the activity of this pathway was very low.
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Affiliation(s)
- Alessandro Saba
- Dipartimento di Chimica e Chimica Industriale (A.S.), University of Pisa, 56126 Pisa, Italy
| | - Grazia Chiellini
- Dipartimento di Scienze dell’Uomo e dell’Ambiente (G.C., S.F., M.M., S.G., R.Z.), University of Pisa, 56126 Pisa, Italy
| | - Sabina Frascarelli
- Dipartimento di Scienze dell’Uomo e dell’Ambiente (G.C., S.F., M.M., S.G., R.Z.), University of Pisa, 56126 Pisa, Italy
| | - Maja Marchini
- Dipartimento di Scienze dell’Uomo e dell’Ambiente (G.C., S.F., M.M., S.G., R.Z.), University of Pisa, 56126 Pisa, Italy
| | - Sandra Ghelardoni
- Dipartimento di Scienze dell’Uomo e dell’Ambiente (G.C., S.F., M.M., S.G., R.Z.), University of Pisa, 56126 Pisa, Italy
| | - Andrea Raffaelli
- Consiglio Nazionale delle Ricerche (A.R.), Istituto di Chimica dei Composti Organo Metallici, Pisa, Italy
| | - Massimo Tonacchera
- Dipartimento di Endocrinologia (M.T., P.V.), University of Pisa, 56126 Pisa, Italy
| | - Paolo Vitti
- Dipartimento di Endocrinologia (M.T., P.V.), University of Pisa, 56126 Pisa, Italy
| | - Thomas S. Scanlan
- Departments of Physiology and Pharmacology and Cell and Developmental Biology (T.S.S.), Oregon Health and Science University, Portland, Oregon 97239
| | - Riccardo Zucchi
- Dipartimento di Scienze dell’Uomo e dell’Ambiente (G.C., S.F., M.M., S.G., R.Z.), University of Pisa, 56126 Pisa, Italy
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17
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Jacobus J, McQueeny T, Bava S, Schweinsburg BC, Frank L, Yang TT, Tapert SF. White matter integrity in adolescents with histories of marijuana use and binge drinking. Neurotoxicol Teratol 2009; 31:349-55. [PMID: 19631736 PMCID: PMC2762024 DOI: 10.1016/j.ntt.2009.07.006] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 06/04/2009] [Accepted: 07/15/2009] [Indexed: 11/30/2022]
Abstract
Structural brain abnormalities have been observed in adolescents with alcohol use disorders but less is known about neuropathological brain characteristics of teens with sub-diagnostic binge drinking or the common pattern of binge drinking combined with marijuana use. The goal of this study was to examine white matter integrity in adolescents with histories of binge drinking and marijuana use. Diffusion tensor imaging (DTI) was conducted with 42 adolescents (ages 16-19) classified as controls, binge drinkers, or binge drinkers who are also heavy marijuana users. Tract based spatial analysis identified shared fiber structure across individuals and facilitated voxelwise comparisons of fractional anisotropy (FA) and mean diffusivity (MD) between groups. Significant between group differences were found in FA in eight white matter regions (ps < or = .016) between the binge drink-only group and controls, including superior corona radiata, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, and superior longitudinal fasciculus. Interestingly, in 4 of these same regions, binge drinkers who are also heavy marijuana users had higher FA than binge drinkers who did not use marijuana (ps<.05). MD did not differ between groups. Findings are largely consistent with research suggesting less neuropathology in adolescents without histories of substance use. However, binge drinkers who also use marijuana did not show as consistent a divergence from non-users as did the binge drink-only group. Detection of white matter alterations may have implications in identifying early cognitive dysfunction in substance using adolescents.
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Affiliation(s)
- J. Jacobus
- SDSU/UCSD Joint Doctoral Program in Clinical Psychology
- VA San Diego Healthcare System
| | - T. McQueeny
- University of Cincinnati, Department of Psychology
| | - S. Bava
- VA San Diego Healthcare System
- University of California San Diego, Department of Psychiatry
| | - B. C. Schweinsburg
- Yale University School of Medicine, Department of Psychiatry
- VA Connecticut Healthcare System
| | - L.R. Frank
- University of California San Diego, Department of Radiology
| | - T. T. Yang
- University of California San Diego, Department of Psychiatry
| | - S. F. Tapert
- VA San Diego Healthcare System
- University of California San Diego, Department of Psychiatry
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18
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Ward RJ, Colivicchi MA, Allen R, Schol F, Lallemand F, de Witte P, Ballini C, Corte LD, Dexter D. Neuro-inflammation induced in the hippocampus of 'binge drinking' rats may be mediated by elevated extracellular glutamate content. J Neurochem 2009; 111:1119-28. [PMID: 19765190 DOI: 10.1111/j.1471-4159.2009.06389.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The neuropathological and immune changes induced in the brain by 'binge drinking' have been investigated in a rat model. Evidence of neuro-inflammation was identified in the 'binge drinking' rat model of alcohol abuse after 3 weeks of administration of 2 or 3 g/kg ethanol (EtOH), three times per day for two consecutive days, followed by 5 days of abstinence: Firstly, alveolar macrophages, isolated from these animals, showed significant increases in inducible nitric oxide synthase, as assayed by nitrite release, both before and after lipopolysaccaharide stimulation. Secondly, significant numbers of activated microglia were present in the dentate gyrus region of the hippocampus of the 'binge drinking' model, after major histocompatibility complex class II staining, by comparison with the control. Microdialysis studies in the ventral hippocampus identified a significant increase in the basal extracellular concentration of glutamate, in both the 2 and 3 g/kg administered 'binge drinking' rats. In contrast, no changes in the hippocampal extracellular concentrations, of GABA and taurine, or the dopamine and serotonin metabolites were observed under basal conditions. A further dose of EtOH induced a significant decrease in the concentrations of both 3,4-dihydroxyphenylacetic acid and 5-hydroxyindoleacetic acid, whereas glutamate, taurine and GABA levels were unaffected. There was no evidence that EtOH preference was initiated by the 'binge drinking' regimen. Our results suggest that the possible toxicity associated with 'binge drinking' maybe directed by the elevated glutamate levels, which in turn, activate phagocytic cells to release their inflammatory cytokines and chemokines, ultimately leading to neuro-inflammation.
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Affiliation(s)
- Roberta J Ward
- Dipartimento di Farmacologia Preclinica e Clinica M. Aiazzi Mancini, Università degli Studi di Firenze, Firenze, Italia.
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