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Boissoneault J, Stennett-Blackmon B, Gilmour C, Blaes S. Neural and Psychosocial Mechanisms Underlying Alcohol Use and Pain Interactions: Overview of Current Evidence and Future Directions. CURRENT ADDICTION REPORTS 2023; 10:677-689. [PMID: 38645279 PMCID: PMC11031255 DOI: 10.1007/s40429-023-00518-y] [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] [Accepted: 09/15/2023] [Indexed: 04/23/2024]
Abstract
Purpose of Review A growing body of research indicates bidirectional associations between alcohol use and pain. In this review, we highlight common neural and psychosocial mechanisms underlying pain and alcohol use and identify current gaps in the literature regarding alcohol/pain interactions. We also suggest future directions for the field moving forward, including more nuanced conceptualization of alcohol's negative reinforcing effects in the context of pain, broader use of clinically-relevant experimental pain induction modalities, and characterization of age, biological sex, gender, race, and ethnicity as moderators of pain/alcohol interactions. Recent Findings Acute alcohol intake has analgesic and negative-reinforcing effects in the context of pain, and chronic heavy alcohol use appears to increase risk for development of chronic pain. At the same time, pain, both acute and chronic, acts as a proximal antecedent for alcohol use and is associated with relapse risk for individuals in recovery from alcohol use disorder. Summary Although the links between alcohol use and pain are increasingly appreciated, significant gaps in understanding remain and systematic study of alcohol/pain interactions at all levels, including basic, preclinical, translational, and interventional, is needed.
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Affiliation(s)
- Jeff Boissoneault
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
- Department of Anesthesiology, University of Minnesota, Minneapolis, MN, USA
| | - Bethany Stennett-Blackmon
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
| | - Christina Gilmour
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
| | - Shelby Blaes
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
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2
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Schimmer J, Patwell R, Küppers S, Grinevich V. The Relationship Between Oxytocin and Alcohol Dependence. Curr Top Behav Neurosci 2023. [PMID: 37697074 DOI: 10.1007/7854_2023_444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
The hypothalamic neuropeptide oxytocin (OT) is well known for its prosocial, anxiolytic, and ameliorating effects on various psychiatric conditions, including alcohol use disorder (AUD). In this chapter, we will first introduce the basic neurophysiology of the OT system and its interaction with other neuromodulatory and neurotransmitter systems in the brain. Next, we provide an overview over the current state of research examining the effects of acute and chronic alcohol exposure on the OT system as well as the effects of OT system manipulation on alcohol-related behaviors in rodents and humans. In rodent models of AUD, OT has been repeatedly shown to reduce ethanol consumption, particularly in models of acute alcohol exposure. In humans however, the results of OT administration on alcohol-related behaviors are promising but not yet conclusive. Therefore, we further discuss several physiological and methodological limitations to the effective application of OT in the clinic and how they may be mitigated by the application of synthetic OT receptor (OTR) agonists. Finally, we discuss the potential efficacy of cutting-edge pharmacology and gene therapies designed to specifically enhance endogenous OT release and thereby rescue deficient expression of OT in the brains of patients with severe forms of AUD and other incurable mental disorders.
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Affiliation(s)
- Jonas Schimmer
- Department of Neuropeptide Research in Psychiatry, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Ryan Patwell
- Department of Neuropeptide Research in Psychiatry, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Stephanie Küppers
- Department of Neuropeptide Research in Psychiatry, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Valery Grinevich
- Department of Neuropeptide Research in Psychiatry, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany.
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3
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Christensen E, Brydevall M, Albertella L, Samarawickrama SK, Yücel M, Lee RSC. Neurocognitive predictors of addiction-related outcomes: A systematic review of longitudinal studies. Neurosci Biobehav Rev 2023; 152:105295. [PMID: 37391111 DOI: 10.1016/j.neubiorev.2023.105295] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/09/2023] [Accepted: 06/23/2023] [Indexed: 07/02/2023]
Abstract
It is well-established that addiction is typically associated with a distinct pattern of neurocognitive functioning with a consensus that it is typified by impaired top-down executive control and aberrant risk-reward processing. Despite a consensus that neurocognition plays an important role in characterizing and maintaining addictive disorders, there is a lack of systematic, bottom-up synthesis of quantitative evidence showing that neurocognition predicts addictive behaviors, and which neurocognitive constructs have the best predictive validity. This systematic review aimed to assess whether cognitive control and risk-reward processes as defined by the Research Domain Criteria (RDoC) predict the development and maintenance of addictive behaviors specifically, consumption, severity, and relapse. The findings from this review expose the substantial lack of evidence for neurocognition predicting addiction outcomes. However, there is evidence that suggests reward-related neurocognitive processes may be important for the detection of early risk for addiction, as well as a potentially viable target for designing novel, more effective interventions.
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Affiliation(s)
- Erynn Christensen
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia.
| | - Maja Brydevall
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia
| | - Lucy Albertella
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia
| | - Sashka K Samarawickrama
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia; Child Development and Digital Technologies Lab, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia
| | - Murat Yücel
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia
| | - Rico S C Lee
- BrainPark, Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Clayton, VIC, Australia; Melbourne School of Psychological Sciences, University of Melbourne, Parkville, VIC, Australia
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4
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Choi MR, Cho S, Kim DJ, Choi JS, Jin YB, Kim M, Chang HJ, Jeon SH, Yang YD, Lee SR. Effects of Ethanol on Expression of Coding and Noncoding RNAs in Murine Neuroblastoma Neuro2a Cells. Int J Mol Sci 2022; 23:ijms23137294. [PMID: 35806296 PMCID: PMC9267046 DOI: 10.3390/ijms23137294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/26/2022] [Accepted: 06/28/2022] [Indexed: 11/19/2022] Open
Abstract
Excessive use of alcohol can induce neurobiological and neuropathological alterations in the brain, including the hippocampus and forebrain, through changes in neurotransmitter systems, hormonal systems, and neuroimmune processes. We aimed to investigate the effects of ethanol on the expression of coding and noncoding RNAs in a brain-derived cell line exposed to ethanol. After exposing Neuro2a cells, a neuroblastoma cell line, to ethanol for 24 and 72 h, we observed cell proliferation and analyzed up- and downregulated mRNAs and long noncoding RNAs (lncRNAs) using total RNA-Seq technology. We validated the differential expression of some mRNAs and lncRNAs by RT-qPCR and analyzed the expression of Cebpd and Rnu3a through knock-down of Cebpd. Cell proliferation was significantly reduced in cells exposed to 100 mM ethanol for 72 h, with 1773 transcripts up- or downregulated by greater than three-fold in ethanol-treated cells compared to controls. Of these, 514 were identified as lncRNAs. Differentially expressed mRNAs and lncRNAs were mainly observed in cells exposed to ethanol for 72 h, in which Atm and Cnr1 decreased, but Trib3, Cebpd, and Spdef increased. On the other hand, lncRNAs Kcnq1ot1, Tug1, and Xist were changed by ethanol, and Rnu3a in particular was greatly increased by chronic ethanol treatment through inhibition of Cebpd. Our results increase the understanding of cellular and molecular mechanisms related to coding and noncoding RNAs in an in vitro model of acute and chronic exposure to ethanol.
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Affiliation(s)
- Mi Ran Choi
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
| | - Sinyoung Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Jung-Seok Choi
- Department of Psychiatry, Samsung Medical Center, Seoul 06351, Korea;
| | - Yeung-Bae Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea;
| | - Miran Kim
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Hye Jin Chang
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Seong Ho Jeon
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Young Duk Yang
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
| | - Sang-Rae Lee
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
- Department of Pharmacology, Ajou University School of Medicine, Suwon 16499, Korea
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
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Stoica SI, Onose G, Hoteteu M, Munteanu C. Effects of ethanol and deferoxamine on rat primary glial cell cultures, in regard with ischemia induced by traumatic spinal cord injury. BALNEO AND PRM RESEARCH JOURNAL 2022. [DOI: 10.12680/balneo.2022.502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Although they have been regarded, in the past, as passive support cells, many experimental data have shown that glial cells play a critical role in the development and functioning of the nervous system. Despite the advances that have been made in understanding astrocytes' role in the nervous system's development and function, our knowledge of their interactions with other cells is still limited, albeit neurons are dependent on the trophic support provided by astrocytes release. Materials and Methods. The use of the McCarthy and de Vellis methods for isolating glial cells has been regarded as an essential tool for studying their function. This study aims to evaluate the effects of ethanol and deferoxamine on primary rat glial cell cultures and try to explain, as far as possible, the relevance of such effects for patients with chronic alcoholism and traumatic spinal cord injuries. Discussion. Because glial cells are very important in the functioning of the central nervous system and experiments cannot be performed on human primary nerve cell cultures, we performed an experiment on glial cells harvested from the newborn rat, analyzing the dynamics of IL-6 and TNF alpha on models of suffering in spinal cord injury (hypoxia and thermally stress). Conclusion. Inhibition of TNF alpha synthesis was more important at 7 days posttraumatic in cells with prolonged ethanolic exposure, even if protein levels of IL-6 were elevated (under similar experimental conditions). Thus, we can say that long-term exposure to ethanol of nerve cells can ensure a favorable evolution of medical recovery (by increasing TNF alpha), even if the inflammatory process remains active (shown by elevated IL-6 values).
Keywords: ethyl alcohol, deferoxamine, primary glial cells cultures, traumatic Spinal Cord Injury
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Affiliation(s)
- Simona Isabelle Stoica
- University of Medicine and Pharmacy "Carol Davila" (UMPCD), Bucharest, Romania 2. Teaching Emergency Hospital "Bagdasar-Arseni" (TEHBA), Bucharest, Romania
| | - Gelu Onose
- University of Medicine and Pharmacy "Carol Davila" (UMPCD), Bucharest, Romania 2. Teaching Emergency Hospital "Bagdasar-Arseni" (TEHBA), Bucharest, Romania
| | - Mihail Hoteteu
- Department of Research, Biosafety Ltd, Bucharest, Romania
| | - Constantin Munteanu
- Teaching Emergency Hospital "Bagdasar-Arseni" (TEHBA), Bucharest, Romania 3. Department of Research, Biosafety Ltd, Bucharest, Romania 4. University of Medicine and Pharmacy “Grigore T. Popa”, Iași, Romania
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6
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Creswell KG, Sayette MA. How laboratory studies of cigarette craving can inform the experimental alcohol craving literature. Alcohol Clin Exp Res 2022; 46:344-358. [PMID: 35037262 PMCID: PMC8920775 DOI: 10.1111/acer.14773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 01/03/2022] [Accepted: 01/05/2022] [Indexed: 11/28/2022]
Abstract
Interest in alcohol and other drug craving has flourished over the past two decades, and evidence has accumulated showing that craving can be meaningfully linked to both drug use and relapse. Considerable human experimental alcohol craving research since 2000 has focused on craving as a clinical phenomenon. Self-reported craving to drink typically has served as a catch-all for the craving construct in these studies, whereas few studies have considered craving as a process (or hypothetical construct) that interacts with other phenomena to affect use. In contrast to alcohol, we believe that recently there has been more mechanistic work targeting cigarette craving-related processes. Here, we briefly present a narrative review of studies of acute alcohol craving in humans that have been conducted during the past two decades. We then specify important ways in which alcohol and tobacco differ (e.g., the role of withdrawal), and we note the unique challenges in inducing robust alcohol craving states in the laboratory. Finally, we offer recommendations for how the alcohol field might advance its conceptual understanding of craving by adopting ideas and methods drawn from the smoking research literature. Specifically, we suggest that researchers extend their studies to not only examine the link between alcohol craving and relapse but also to focus on why and, in some instances, how alcohol cravings matter clinically, and the circumstances under which craving especially matters. We propose research to investigate the shifts in alcohol-related cognitive and affective processing that occur during alcohol craving states. Furthermore, we highlight the value of research examining the level of insight that individuals with varying levels of alcohol involvement possess about their own craving-related processing shifts. We believe that laboratory studies can provide rich opportunities to examine conceptual questions about alcohol craving that are central to addiction.
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Affiliation(s)
- Kasey G. Creswell
- Department of PsychologyCarnegie Mellon UniversityPittsburghPennsylvaniaUSA
| | - Michael A. Sayette
- Department of PsychologyUniversity of PittsburghPittsburghPennsylvaniaUSA
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7
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Quijano Cardé NA, Perez EE, Feinn R, Kranzler HR, De Biasi M. Antagonism of GluK1-containing kainate receptors reduces ethanol consumption by modulating ethanol reward and withdrawal. Neuropharmacology 2021; 199:108783. [PMID: 34509497 DOI: 10.1016/j.neuropharm.2021.108783] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/18/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
Alcohol use disorder (AUD) is a neuropsychiatric condition affecting millions of people worldwide. Topiramate (TPM) is an antiepileptic drug that has been shown to reduce ethanol drinking in humans. However, TPM is associated with a variety of adverse effects due to its interaction with many receptor systems and intracellular pathways. GluK1-containing kainate receptors (GluK1*KARs) are non-selectively inhibited by TPM, and genetic association studies suggest that this receptor system could be targeted to reduce drinking in AUD patients. We examined the efficacy of LY466195, a selective inhibitor of GluK1*KAR, in reducing ethanol consumption in the intermittent two-bottle choice paradigm in mice. The effect of LY466195 on various ethanol-related phenotypes was investigated by quantification of alcohol intake, physical signs of withdrawal, conditioned place preference (CPP) and in vivo microdialysis in the nucleus accumbens. Selective GluK1*KAR inhibition reduced ethanol intake and preference in a dose-dependent manner. LY466195 treatment attenuated the physical manifestations of ethanol withdrawal and influenced the rewarding properties of ethanol. Interestingly, LY466195 injection also normalized changes in dopamine levels in response to acute ethanol in ethanol-dependent mice, but had no effect in ethanol-naïve mice, suggesting ethanol state-dependent effects. The data point to GluK1*KARs as an attractive pharmacological target for the treatment of AUD.
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Affiliation(s)
- Natalia A Quijano Cardé
- Pharmacology Graduate Group, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Erika E Perez
- Department of Neuroscience, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Richard Feinn
- Department of Medical Sciences, Frank H Netter School of Medicine, Quinnipiac University, CTl Sciences, USA
| | - Henry R Kranzler
- Center for Studies of Addiction, Department of Psychiatry, Perelman School of Medicine of the University of Pennsylvania and VISN 4 MIRECC, Crescenz VAMC, Philadelphia, PA, 19104, USA; Department of Psychiatry, Perelman School of Medicine of the University of Pennsylvania, USA
| | - Mariella De Biasi
- Pharmacology Graduate Group, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, 19104, USA; Department of Psychiatry, Perelman School of Medicine of the University of Pennsylvania, USA.
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8
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Steel TL, Afshar M, Edwards S, Jolley SE, Timko C, Clark BJ, Douglas IS, Dzierba AL, Gershengorn HB, Gilpin NW, Godwin DW, Hough CL, Maldonado JR, Mehta AB, Nelson LS, Patel MB, Rastegar DA, Stollings JL, Tabakoff B, Tate JA, Wong A, Burnham EL. Research Needs for Inpatient Management of Severe Alcohol Withdrawal Syndrome: An Official American Thoracic Society Research Statement. Am J Respir Crit Care Med 2021; 204:e61-e87. [PMID: 34609257 PMCID: PMC8528516 DOI: 10.1164/rccm.202108-1845st] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: Severe alcohol withdrawal syndrome (SAWS) is highly morbid, costly, and common among hospitalized patients, yet minimal evidence exists to guide inpatient management. Research needs in this field are broad, spanning the translational science spectrum. Goals: This research statement aims to describe what is known about SAWS, identify knowledge gaps, and offer recommendations for research in each domain of the Institute of Medicine T0-T4 continuum to advance the care of hospitalized patients who experience SAWS. Methods: Clinicians and researchers with unique and complementary expertise in basic, clinical, and implementation research related to unhealthy alcohol consumption and alcohol withdrawal were invited to participate in a workshop at the American Thoracic Society 2019 International Conference. The committee was subdivided into four groups on the basis of interest and expertise: T0-T1 (basic science research with translation to humans), T2 (research translating to patients), T3 (research translating to clinical practice), and T4 (research translating to communities). A medical librarian conducted a pragmatic literature search to facilitate this work, and committee members reviewed and supplemented the resulting evidence, identifying key knowledge gaps. Results: The committee identified several investigative opportunities to advance the care of patients with SAWS in each domain of the translational science spectrum. Major themes included 1) the need to investigate non-γ-aminobutyric acid pathways for alcohol withdrawal syndrome treatment; 2) harnessing retrospective and electronic health record data to identify risk factors and create objective severity scoring systems, particularly for acutely ill patients with SAWS; 3) the need for more robust comparative-effectiveness data to identify optimal SAWS treatment strategies; and 4) recommendations to accelerate implementation of effective treatments into practice. Conclusions: The dearth of evidence supporting management decisions for hospitalized patients with SAWS, many of whom require critical care, represents both a call to action and an opportunity for the American Thoracic Society and larger scientific communities to improve care for a vulnerable patient population. This report highlights basic, clinical, and implementation research that diverse experts agree will have the greatest impact on improving care for hospitalized patients with SAWS.
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Arakelyan A, Kempkensteffen J, Verthein U. Systematische Literaturübersicht der Wirksamkeit von
Acamprosat, Naltrexon, Disulfiram und Nalmefen zur Trinkmengenreduktion und
Aufrechterhaltung der Abstinenz bei Alkoholabhängigkeit. SUCHTTHERAPIE 2021. [DOI: 10.1055/a-1494-4333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
ZusammenfassungDas Ziel der vorliegenden Übersichtsarbeit ist die systematische
Darstellung der aktuellen Evidenz zur Wirksamkeit von Acamprosat, Naltrexon,
Disulfiram und Nalmefen für die Aufrechterhaltung der Abstinenz oder
Trinkmengenreduktion bei alkoholabhängigen Patient:innen. Bezogen auf
den Zeitraum 2005 bis 2020 wurden insgesamt 27 Studien identifiziert, die alle
Einschlusskriterien (u. a. RCT, mind. 8 Wochen Behandlungsdauer)
erfüllten. Es wurden überwiegend Hinweise zur Wirksamkeit von
Nalmefen gefunden. Acamprosat war nicht (zusätzlich) wirksam. Naltrexon
trug in kombinierten Interventionen einen zusätzlichen Nutzen bei, dies
galt jedoch nicht für die Mehrzahl der Studien. Disulfiram war nicht
wirksam darin, einen zusätzlichen Nutzen zur Erhaltung der Abstinenz
beizutragen, im Vergleich zu Topiramat, einem Antikonvulsivum, jedoch
effektiver. Die Ergebnisse stehen nicht im Einklang mit dem bisher bekannten
Forschungsstand, der Acamprosat, Naltrexon und Nalmefen als überwiegend
effektiv und sicher einstuft und Disulfiram als mäßig wirksam.
Der pharmakologische Interventionsbedarf sollte bei Bestehen alkoholbezogener
Probleme exploriert und ggf. erwogen werden, damit diesbezüglich
Vorbehalte abgebaut und ein umfassendes und zugleich individuelles
Behandlungsangebot geschaffen wird. Hinsichtlich der Trinkmengenreduktion
sollten Aspekte der Schadensminderung als Behandlungsziel berücksichtigt
werden.
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Affiliation(s)
- Anna Arakelyan
- Universitätsklinikum Hamburg-Eppendorf, Zentrum für
Interdisziplinäre Suchtforschung der Universität Hamburg (ZIS),
Klinik für Psychiatrie und Psychotherapie
| | - Jürgen Kempkensteffen
- Universität Hamburg, Fakultät für Psychologie
und Bewegungswissenschaft, Klinische Psychologie und
Psychotherapie
| | - Uwe Verthein
- Universitätsklinikum Hamburg-Eppendorf, Zentrum für
Interdisziplinäre Suchtforschung der Universität Hamburg (ZIS),
Klinik für Psychiatrie und Psychotherapie
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10
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Nunes-Freitas AL, Soni N, Polli FS, Kohlmeier KA. Prenatal exposure to nicotine in mice is associated with alterations in development and cellular and synaptic effects of alcohol in a brainstem arousal nucleus. Neurotoxicol Teratol 2021; 87:106980. [PMID: 33838245 DOI: 10.1016/j.ntt.2021.106980] [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: 01/09/2021] [Revised: 03/22/2021] [Accepted: 04/04/2021] [Indexed: 02/07/2023]
Abstract
Using drugs of abuse while pregnant has tremendous negative consequences for the offspring, including an enhanced risk for substance use disorder (SUD). This vulnerability suggests that gestational exposure to drugs alters the developmental trajectory of neurons important in SUD processes, which could lead to later life changes in responsiveness to motivationally salient stimuli. The laterodorsal tegmentum (LDT) gates the behaviorally relevant firing pattern signaling stimuli saliency in mesoaccumbal circuits. Accordingly, any alterations in LDT functionality could alter output, and play a role in negative outcomes on motivated behavior associated with early-life nicotine exposure. Therefore, we investigated whether prenatal exposure to nicotine (PNE), which is a known teratogen, altered responsiveness of LDT neurons to alcohol by conducting electrophysiology in brain slices. Alcohol induced an outward current in control LDT cells, which was not seen in PNE LDT neurons. The frequency of mEPSCs was significantly decreased by alcohol in LDT PNE cells and accompanied by a decrease in action potential frequency, which were actions not seen in controls. Changes in baseline activity of PNE LDT cells were also observed. In summary, PNE LDT neurons showed alterations in baseline activity and membrane and synaptic responses to postnatal exposures to alcohol. The differences in PNE baseline activity and alcohol responses likely lead to differential output from the LDT to mesoaccumbal targets that could play a role in biasing coding of relevant stimuli, which could participate in the enhanced proclivity for development of SUD in those exposed during gestation to nicotine.
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Affiliation(s)
- André Luiz Nunes-Freitas
- Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark; Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Neeraj Soni
- Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark
| | - Filip S Polli
- Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark
| | - Kristi A Kohlmeier
- Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark.
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11
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Maccioni P, Bratzu J, Carai MAM, Colombo G, Gessa GL. Reducing Effect of Cannabidiol on Alcohol Self-Administration in Sardinian Alcohol-Preferring Rats. Cannabis Cannabinoid Res 2021; 7:161-169. [PMID: 33998889 PMCID: PMC9070735 DOI: 10.1089/can.2020.0132] [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] [Indexed: 12/28/2022] Open
Abstract
Introduction: Cannabidiol (CBD) is a major cannabinoid extracted from Cannabis sativa with no abuse potential. Data from recent rodent studies suggest that amelioration of alcohol-motivated behaviors may be one of the numerous pharmacological effects of CBD. This study was designed to contribute to this research, assessing the effect of CBD on operant oral alcohol self-administration in selectively bred Sardinian alcohol-preferring (sP) rats, a validated animal model of excessive alcohol consumption. In addition, this study investigated the effect of CBD on operant self-administration of a highly palatable chocolate solution in Wistar rats. Materials and Methods: Male sP rats were trained to lever respond for alcohol (15% v/v) under the fixed ratio 4 (FR4) schedule of reinforcement. Once lever responding had stabilized, rats were exposed to test sessions under the FR4 and progressive ratio (PR) schedules of reinforcement. Test sessions were preceded by acute treatment with CBD (0, 6.25, 12.5, and 25 mg/kg or 0, 25, 50, and 100 mg/kg, i.p.; each dose range was tested in an independent experiment). Male Wistar rats were trained to lever respond for a chocolate solution (5% w/v chocolate powder) under the FR10 schedule of reinforcement. Once lever responding had stabilized, rats were exposed to test sessions under the same schedule. Test sessions were preceded by acute treatment with CBD (0, 6.25, 12.5, and 25 mg/kg or 0, 25, 50, and 100 mg/kg, i.p., in two independent experiments). Results: Under the FR schedule, treatment with doses of CBD ≥12.5 mg/kg markedly reduced lever responding for alcohol and amount of self-administered alcohol. Under the PR schedule, treatment with CBD produced a slight tendency toward a decrease in lever responding and breakpoint for alcohol. Finally, no dose of CBD affected lever responding for the chocolate solution and amount of self-administered chocolate solution. Discussion: These results extend previous data on CBD ability to affect alcohol-motivated behaviors to an animal model of genetically-determined proclivity to high alcohol consumption. Because of the predictive validity of sP rats, these results may be of relevance in view of possible future studies testing CBD in patients affected by alcohol use disorder.
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Affiliation(s)
- Paola Maccioni
- Section of Cagliari, Neuroscience Institute, National Research Council of Italy, Monserrato, Italy
| | - Jessica Bratzu
- Section of Cagliari, Neuroscience Institute, National Research Council of Italy, Monserrato, Italy
| | | | - Giancarlo Colombo
- Section of Cagliari, Neuroscience Institute, National Research Council of Italy, Monserrato, Italy
| | - Gian Luigi Gessa
- Section of Cagliari, Neuroscience Institute, National Research Council of Italy, Monserrato, Italy
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Ghiţă A, Hernández-Serrano O, Fernández-Ruiz J, Moreno M, Monras M, Ortega L, Mondon S, Teixidor L, Gual A, Gacto-Sanchez M, Porras-García B, Ferrer-García M, Gutiérrez-Maldonado J. Attentional Bias, Alcohol Craving, and Anxiety Implications of the Virtual Reality Cue-Exposure Therapy in Severe Alcohol Use Disorder: A Case Report. Front Psychol 2021; 12:543586. [PMID: 33692713 PMCID: PMC7937649 DOI: 10.3389/fpsyg.2021.543586] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 01/13/2021] [Indexed: 12/04/2022] Open
Abstract
Aims: Attentional bias (AB), alcohol craving, and anxiety have important implications in the development and maintenance of alcohol use disorder (AUD). The current study aims to test the effectiveness of a Virtual Reality Cue-Exposure Therapy (VR-CET) to reduce levels of alcohol craving and anxiety and prompt changes in AB toward alcohol content. Method: A 49-year-old male participated in this study, diagnosed with severe AUD, who also used tobacco and illicit substances on an occasional basis and who made several failed attempts to cease substance misuse. The protocol consisted of six VR-CET booster sessions and two assessment sessions (pre- and post-VR-CET) over the course of 5 weeks. The VR-CET program consisted of booster therapy sessions based on virtual reality (VR) exposure to preferred alcohol-related cues and contexts. The initial and final assessment sessions were focused on exploring AB, alcohol craving, and anxiety using paper-and-pencil instruments and the eye-tracking (ET) and VR technologies at different time points. Results: Pre and post assessment sessions indicated falls on the scores of all instruments assessing alcohol craving, anxiety, and AB. Conclusions: This case report, part of a larger project, demonstrates the effectiveness of the VR-CET booster sessions in AUD. In the post-treatment measurements, a variety of instruments showed a change in the AB pattern and an improvement in craving and anxiety responses. As a result of the systematic desensitization, virtual exposure gradually reduced the responses to significant alcohol-related cues and contexts. The implications for AB, anxiety and craving are discussed.
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Affiliation(s)
- Alexandra Ghiţă
- Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
| | | | - Jolanda Fernández-Ruiz
- Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
| | - Manuel Moreno
- Department of Cognition, Development and Educational Psychology, University of Barcelona, Barcelona, Spain
| | - Miquel Monras
- Addictive Behaviors Unit, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Lluisa Ortega
- Addictive Behaviors Unit, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Silvia Mondon
- Addictive Behaviors Unit, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Lidia Teixidor
- Addictive Behaviors Unit, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Antoni Gual
- Addictive Behaviors Unit, Hospital Clinic of Barcelona, Barcelona, Spain
| | | | - Bruno Porras-García
- Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
| | - Marta Ferrer-García
- Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
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Cortez I, Rodgers SP, Kosten TA, Leasure JL. Sex and Age Effects on Neurobehavioral Toxicity Induced by Binge Alcohol. Brain Plast 2020; 6:5-25. [PMID: 33680843 PMCID: PMC7902983 DOI: 10.3233/bpl-190094] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Historically, most alcohol neurotoxicity studies were conducted in young adult males and focused on chronic intake. There has been a shift towards studying the effects of alcohol on the adolescent brain, due to alcohol consumption during this formative period disrupting the brain's developmental trajectory. Because the most typical pattern of adolescent alcohol intake is heavy episodic (binge) drinking, there has also been a shift towards the study of binge alcohol-induced neurobehavioral toxicity. It has thus become apparent that binge alcohol damages the adolescent brain and there is increasing attention to sex-dependent effects. Significant knowledge gaps remain in our understanding of the effects of binge alcohol on the female brain, however. Moreover, it is unsettling that population-level studies indicate that the prevalence of binge drinking is increasing among American women, particularly those in older age groups. Although study of adolescents has made it apparent that binge alcohol disrupts ongoing brain maturational processes, we know almost nothing about how it impacts the aging brain, as studies of its effects on the aged brain are relatively scarce, and the study of sex-dependent effects is just beginning. Given the rapidly increasing population of older Americans, it is crucial that studies address age-dependent effects of binge alcohol, and given the increase in binge drinking in older women who are at higher risk for cognitive decline relative to men, studies must encompass both sexes. Because adolescence and older age are both characterized by age-typical brain changes, and because binge drinking is the most common pattern of alcohol intake in both age groups, the knowledge that we have amassed on binge alcohol effects on the adolescent brain can inform our study of its effects on the aging brain. In this review, we therefore cover the current state of knowledge of sex and age-dependent effects of binge alcohol, as well as statistical and methodological considerations for studies aimed at addressing them.
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Affiliation(s)
- Ibdanelo Cortez
- Department of Psychology, University of Houston, Houston, TX, USA
| | | | | | - J. Leigh Leasure
- Department of Psychology, University of Houston, Houston, TX, USA
- Department of Biology & Biochemistry, University of Houston, Houston, TX, USA
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Liang X, Hu X, Zhang X, Fu H. ASF (a Compound of Traditional Chinese Medicine) in the treatment of patients with alcohol dependence: Study protocol of a randomized, double-blinded, placebo-controlled clinical trial. Medicine (Baltimore) 2020; 99:e23899. [PMID: 33350787 PMCID: PMC7769360 DOI: 10.1097/md.0000000000023899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 11/30/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Alcohol dependence is one of the biggest problems facing public health worldwide. Currently, it is an under-diagnosed and under-treated disease. Even when given treatments for addiction withdrawal, over 2/3 of patients who have undergone abstinence-oriented treatment will relapse in the first year. Therefore, it is necessary to find an efficacious way to prevent and treat alcohol dependence. ASF (a Compound of Traditional Chinese Medicine) has proven to inhibit the formation and expression of ethanol-induced behavioral sensitization and the development of conditioned place preference in mice. As an empirical prescription for abstinence from alcohol, ASF has long been used in clinical patients. However, the effect of ASF in humans has not yet been investigated. The purpose of this study is to evaluate the efficacy of ASF for patients with alcohol dependence. METHODS The effect of ASF will be studied in a randomized, double-blinded, placebo-controlled clinical trial. 82 outpatients and inpatients will be recruited and randomly assigned to treatment with either ASF or placebo for 6 weeks as a complement to cognitive behavioural therapy. The primary endpoints are the changes in the average daily alcohol consumption of the 2 groups before and after treatment and comparison of the scores of the psychological craving self-rating scale during the courses of treatment of 2 groups. The secondary endpoints include abstinence rates of the 2 groups during the follow-up period, days without consumption, and changes of Short Form Health Survey (SF-36) scores in 2 groups before and after therapy. DISCUSSION This study is the first randomized controlled trial to investigate ASF in the treatment of alcohol dependence. ASF is likely to be a new and effective drug for the treatment of alcohol dependence developed from natural products with a low incidence of side effects or toxicity. TRIAL REGISTRATION Registry number: ChiCTR2000039397.
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Affiliation(s)
- Xianting Liang
- Hospital of Chengdu University of Traditional Chinese Medicine
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyu Hu
- Hospital of Chengdu University of Traditional Chinese Medicine
| | - Xia Zhang
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hongfang Fu
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Palombo P, Engi SA, Yokoyama TS, Bezerra AG, Curado DF, Anésio A, Leão RM, Santos PCJDL, Cruz FC, Galduróz JCF. Effects of biperiden (cholinergic muscarinic m1/m4 receptor antagonist) on ethanol conditioned place preference in mice. Neurosci Lett 2020; 745:135551. [PMID: 33346074 DOI: 10.1016/j.neulet.2020.135551] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Previous studies suggest that muscarinic cholinergic receptors might act upon the dopamine release in the mesolimbic system and alter drug-reinforcing values related to drug craving. AIMS We examined the effects of systemic biperiden administration, a muscarinic cholinergic (M1/M4) receptor antagonist, on ethanol (dose of 2 g/Kg) conditioned place preference (CPP), neuronal activation, dopamine and its metabolites levels in the nucleus accumbens. METHODS Thirty minutes before the ethanol-induced CPP test, mice received saline or biperiden at doses of 1.0, 5.0, or 10.0 mg/kg. The time spent in each compartment was recorded for 15 min. After the CPP protocol, animals were euthanized, and we investigated the activation of the nucleus accumbens by immunohistochemistry for Fos. We also quantified dopamine, homovanillic acid (HVA), and dihydroxyphenylacetic acid (DOPAC) levels in the nucleus accumbens by high-performance liquid chromatography (HPLC). Additionally, the rotarod was employed to evaluate the effects of biperiden on motor coordination. RESULTS Biperiden at different doses (1.0, 5.0, and 10.0 mg/kg) blocked the expression of ethanol-induced CPP. These biperiden doses increased the number of Fos-positive cells and the dopamine turnover in the nucleus accumbens. None of the doses affected the motor coordination evaluated by the rotarod. CONCLUSIONS Our results show that biperiden can modulate the effect of alcohol reward, and its mechanism of action may involve a change in dopamine and cholinergic mesolimbic neurotransmission.
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Affiliation(s)
- Paola Palombo
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sheila Antonagi Engi
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Thais Suemi Yokoyama
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Augusto Anésio
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Rodrigo Molini Leão
- Laboratório de Farmacologia, Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia - UFU, Uberlândia, Brazil
| | | | - Fábio Cardoso Cruz
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, Brazil.
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Drake J, McMichael GO, Vornholt ES, Cresswell K, Williamson V, Chatzinakos C, Mamdani M, Hariharan S, Kendler KS, Kalsi G, Riley BP, Dozmorov M, Miles MF, Bacanu S, Vladimirov VI. Assessing the Role of Long Noncoding RNA in Nucleus Accumbens in Subjects With Alcohol Dependence. Alcohol Clin Exp Res 2020; 44:2468-2480. [PMID: 33067813 PMCID: PMC7756309 DOI: 10.1111/acer.14479] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 10/01/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Long noncoding RNA (lncRNA) have been implicated in the etiology of alcohol use. Since lncRNA provide another layer of complexity to the transcriptome, assessing their expression in the brain is the first critical step toward understanding lncRNA functions in alcohol use and addiction. Thus, we sought to profile lncRNA expression in the nucleus accumbens (NAc) in a large postmortem alcohol brain sample. METHODS LncRNA and protein-coding gene (PCG) expressions in the NAc from 41 subjects with alcohol dependence (AD) and 41 controls were assessed via a regression model. Weighted gene coexpression network analysis was used to identify lncRNA and PCG networks (i.e., modules) significantly correlated with AD. Within the significant modules, key network genes (i.e., hubs) were also identified. The lncRNA and PCG hubs were correlated via Pearson correlations to elucidate the potential biological functions of lncRNA. The lncRNA and PCG hubs were further integrated with GWAS data to identify expression quantitative trait loci (eQTL). RESULTS At Bonferroni adj. p-value ≤ 0.05, we identified 19 lncRNA and 5 PCG significant modules, which were enriched for neuronal and immune-related processes. In these modules, we further identified 86 and 315 PCG and lncRNA hubs, respectively. At false discovery rate (FDR) of 10%, the correlation analyses between the lncRNA and PCG hubs revealed 3,125 positive and 1,860 negative correlations. Integration of hubs with genotype data identified 243 eQTLs affecting the expression of 39 and 204 PCG and lncRNA hubs, respectively. CONCLUSIONS Our study identified lncRNA and gene networks significantly associated with AD in the NAc, coordinated lncRNA and mRNA coexpression changes, highlighting potentially regulatory functions for the lncRNA, and our genetic (cis-eQTL) analysis provides novel insights into the etiological mechanisms of AD.
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Affiliation(s)
- John Drake
- From the Center for Integrative Life Sciences Education (JD)Virginia Commonwealth UniversityRichmondVirginia
| | - Gowon O. McMichael
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
| | - Eric Sean Vornholt
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
| | - Kellen Cresswell
- Department of Biostatistics(KC, MD)Virginia Commonwealth UniversityRichmondVirginia
| | - Vernell Williamson
- Department of Pathology(VW)Virginia Commonwealth UniversityRichmondVirginia
| | - Chris Chatzinakos
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
| | - Mohammed Mamdani
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
| | - Siddharth Hariharan
- Summer Research Fellowship(SH)School of MedicineVirginia Commonwealth UniversityRichmondVirginia
| | - Kenneth S. Kendler
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Psychiatry(KSK, BPR, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Human and Molecular Genetics(KSK, BPR)Virginia Commonwealth UniversityRichmondVirginia
| | - Gursharan Kalsi
- Department of Social, Genetic and Developmental Psychiatry(GK)Institute of PsychiatryLondonUK
| | - Brien P. Riley
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Psychiatry(KSK, BPR, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Human and Molecular Genetics(KSK, BPR)Virginia Commonwealth UniversityRichmondVirginia
| | - Mikhail Dozmorov
- Department of Biostatistics(KC, MD)Virginia Commonwealth UniversityRichmondVirginia
| | - Michael F. Miles
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Pharmacology and Toxicology(MFM)Virginia Commonwealth UniversityRichmondVirginia
| | - Silviu‐Alin Bacanu
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Psychiatry(KSK, BPR, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
| | - Vladimir I. Vladimirov
- Virginia Institute for Psychiatric and Behavioral Genetics(GOM, ESV, CC, MM, KSK, BPR, MFM, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Department of Psychiatry(KSK, BPR, S‐AB, VIV)Virginia Commonwealth UniversityRichmondVirginia
- Center for Biomarker Research and Personalized Medicine(VIV)Virginia Commonwealth UniversityRichmondVirginia
- Lieber Institute for Brain Development(VIV)Johns Hopkins UniversityBaltimoreMaryland
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Caputo F, Cibin M, Loche A, De Giorgio R, Zoli G. The recognition and management of protracted alcohol withdrawal may improve and modulate the pharmacological treatment of alcohol use disorder. J Psychopharmacol 2020; 34:1171-1175. [PMID: 32648800 DOI: 10.1177/0269881120936483] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
About 50% of persons with an alcohol use disorder may have symptoms of alcohol withdrawal syndrome (AWS) when they reduce or discontinue their alcohol consumption. Protracted alcohol withdrawal (PAW), an underestimated and not yet clearly defined clinical condition that follows the acute stage of AWS, is characterized by the presence of substance-specific signs and symptoms (i.e. anxiety, irritability, mood instability, insomnia, craving) common to acute AWS, but persisting beyond the generally expected acute AWS time frames. Considering that PAW symptoms are mainly related to the neuro-adaptive changes of gamma-aminobutyric acid (GABA) and N-methyl-d-aspartate (NMDA) systems, naltrexone, nalmefene, and disulfiram may not be able to suppress the symptoms of PAW. After treatment of the acute phase of AWS, a more specifically pharmacological therapy able to suppress PAW symptoms could perhaps be used earlier and may be more helpful in preventing the risk of alcohol relapse, which remains higher during the first months of treatment. In light of this, medications acting on GABA and NMDA neurotransmitter systems to counterbalance the up-regulation of NMDA and the down-regulation of GABA could be employed in combination and started as soon as possible.
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Affiliation(s)
- Fabio Caputo
- Department of Internal Medicine, SS Annunziata Hospital, University of Ferrara, Ferrara, Italy.,Italian Society on Alcohol (SIA), Bologna, Italy
| | - Mauro Cibin
- Italian Society of Substance Abuse (SITD), Dolo (Venezia), Italy
| | | | - Roberto De Giorgio
- Department of Morphology, Surgery, Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Giorgio Zoli
- Department of Morphology, Surgery, Experimental Medicine, University of Ferrara, Ferrara, Italy
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Turco CV, Arsalan SO, Nelson AJ. The Influence of Recreational Substance Use in TMS Research. Brain Sci 2020; 10:E751. [PMID: 33080965 PMCID: PMC7603156 DOI: 10.3390/brainsci10100751] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 12/30/2022] Open
Abstract
(1) Background: Transcranial magnetic stimulation (TMS) approaches are widely used to study cortical and corticospinal function. However, responses to TMS are subject to significant intra-and inter-individual variability. Acute and chronic exposure to recreational substances alters the excitability of the sensorimotor system and may contribute to the variability in TMS outcome measures. The increasing prevalence of recreational substance use poses a significant challenge for executing TMS studies, but there is a lack of clarity regarding the influence of these substances on sensorimotor function. (2) Methods: The literature investigating the influence of alcohol, nicotine, caffeine and cannabis on TMS outcome measures of corticospinal, intracortical and interhemispheric excitability was reviewed. (3) Results: Both acute and chronic use of recreational substances modulates TMS measures of excitability. Despite the abundance of research in this field, we identify knowledge gaps that should be addressed in future studies to better understand the influence of these substances on TMS outcomes. (4) Conclusions: This review highlights the need for TMS studies to take into consideration the history of participant substance use and to control for acute substance use prior to testing.
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Affiliation(s)
| | | | - Aimee J. Nelson
- Department of Kinesiology, McMaster University, Hamilton, ON L8S 4L8, Canada; (C.V.T.); (S.O.A.)
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Pharmacological inhibition of glycogen synthase kinase 3 increases operant alcohol self-administration in a manner associated with altered pGSK-3β, protein interacting with C kinase and GluA2 protein expression in the reward pathway of male C57BL/6J mice. Behav Pharmacol 2020; 31:15-26. [PMID: 31503067 DOI: 10.1097/fbp.0000000000000501] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Glycogen synthase kinase 3 (GSK-3) is a constitutively active serine-threonine kinase that regulates numerous signaling pathways and has been implicated in neurodegenerative and neuropsychiatric diseases. Alcohol exposure increases GSK-3β (ser9) phosphorylation (pGSK-3β); however, few studies have investigated whether GSK-3 regulates the positive reinforcing effects of alcohol, which drive repetitive drug use. To address this goal, male C57BL/6J mice were trained to lever press on a fixed-ratio 4 schedule of sweetened alcohol or sucrose-only reinforcement in operant conditioning chambers. The GSK-3 inhibitor CHIR 99021 (0-10 mg/kg, i.p.) was injected 45 minutes prior to self-administration sessions. After completion of the self-administration dose-effect curve, potential locomotor effects of the GSK-3 inhibitor were assessed. To determine molecular efficacy, CHIR 99021 (10 mg/kg, i.p.) was evaluated on pGSK-3β, GSK-3β, protein interacting with C kinase (PICK1), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor GluA2 subunit protein expression in amygdala, nucleus accumbens (NAcb), and frontal cortex. Results showed that CHIR 99021 (10 mg/kg) dose-dependently increased alcohol reinforced responding with no effect on sucrose self-administration or locomotor activity. CHIR 99021 (10 mg/kg) significantly decreased pGSK-3β expression in all brain regions tested, reduced PICK1 and increased GluA2 total expression only in the NAcb. We conclude that GSK-3 inhibition increased the reinforcing effects of alcohol in mice. This was associated with reduced pGSK-3β and PICK1, and increased GluA2 expression. Given prior results showing that AMPA receptor activity regulates alcohol self-administration, we propose that signaling through the GSK-3/PICK1/GluA2 molecular pathway drives the positive reinforcing effects of the drug, which are required for abuse liability.
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Gatta E, Guidotti A, Saudagar V, Grayson DR, Aspesi D, Pandey SC, Pinna G. Epigenetic Regulation of GABAergic Neurotransmission and Neurosteroid Biosynthesis in Alcohol Use Disorder. Int J Neuropsychopharmacol 2020; 24:130-141. [PMID: 32968808 PMCID: PMC7883893 DOI: 10.1093/ijnp/pyaa073] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 09/11/2020] [Accepted: 09/21/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Alcohol use disorder (AUD) is a chronic relapsing brain disorder. GABAA receptor (GABAAR) subunits are a target for the pharmacological effects of alcohol. Neurosteroids play an important role in the fine-tuning of GABAAR function in the brain. Recently, we have shown that AUD is associated with changes in DNA methylation mechanisms. However, the role of DNA methylation in the regulation of neurosteroid biosynthesis and GABAergic neurotransmission in AUD patients remains under-investigated. METHODS In a cohort of postmortem brains from 20 male controls and AUD patients, we investigated the expression of GABAAR subunits and neurosteroid biosynthetic enzymes and their regulation by DNA methylation mechanisms. Neurosteroid levels were quantified by gas chromatography-mass spectrometry. RESULTS The α 2 subunit expression was reduced due to increased DNA methylation at the gene promoter region in the cerebellum of AUD patients, a brain area particularly sensitive to the effects of alcohol. Alcohol-induced alteration in GABAAR subunits was also observed in the prefrontal cortex. Neurosteroid biosynthesis was also affected with reduced cerebellar expression of the 18kDa translocator protein and 3α-hydroxysteroid dehydrogenase mRNAs. Notably, increased DNA methylation levels were observed at the promoter region of 3α-hydroxysteroid dehydrogenase. These changes were associated with markedly reduced levels of allopregnanolone and pregnanolone in the cerebellum. CONCLUSION Given the key role of neurosteroids in modulating the strength of GABAAR-mediated inhibition, our data suggest that alcohol-induced impairments in GABAergic neurotransmission might be profoundly impacted by reduced neurosteroid biosynthesis most likely via DNA hypermethylation.
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Affiliation(s)
- Eleonora Gatta
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois
| | - Alessandro Guidotti
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois,Correspondence: Dr Alessandro Guidotti, Center for Alcohol Research in Epigenetics, Psychiatric Institute - Department of Psychiatry, University of Illinois at Chicago, 1601 West Taylor Street, Chicago, IL 60612 ()
| | - Vikram Saudagar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois
| | - Dennis R Grayson
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois
| | - Dario Aspesi
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois,Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Graziano Pinna
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, Illinois
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Kethawath SM, Jain R, Dhawan A, Sarkar S, Kumar M. An Observational Study of Serum Brain Derived Neurotrophic Factor Levels in Patients with Alcohol Dependence during Withdrawal. J Psychoactive Drugs 2020; 52:440-446. [PMID: 32748710 DOI: 10.1080/02791072.2020.1795327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Brain-Derived Neurotrophic Factor (BDNF) is a neuropeptide that plays an important role in Central Nervous System development, plasticity, learning, and memory. Its role has been explored in alcohol-dependent patients, though the results have been inconclusive. Thus, we aimed to compare serum BDNF levels in alcohol-dependent patients during withdrawal with age and gender matched controls, and assess changes in BDNF levels in the initial abstinence period. BDNF levels of alcohol-dependent patients (n = 25) were compared with controls (n = 25) at baseline. Additionally, BDNF levels were measured in cases on days 5 and 10 of inpatient detoxification. BDNF levels of controls did not differ with cases on day 1, 5, or 10. But BDNF levels increased significantly during alcohol abstinence from baseline to day 10 (Pillai's Trace F = 3.753, p = .039, partial η2 = 0.246), which may suggest its protective role. Thus, serum BDNF values may be potentially used as a biomarker to assess the abstinence state. However, longitudinal studies in different body samples is essential to better understand the role of BDNF in alcohol dependence.
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Affiliation(s)
- Shanti Mohan Kethawath
- Department of Psychiatry, National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS) , New Delhi, India
| | - Raka Jain
- Department of Psychiatry, National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS) , New Delhi, India
| | - Anju Dhawan
- Department of Psychiatry, National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS) , New Delhi, India
| | - Siddharth Sarkar
- Department of Psychiatry, National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS) , New Delhi, India
| | - Mukesh Kumar
- Lab Technician of National Drug Dependence Treatment Centre (NDDTC), All India Institute of Medical Sciences (AIIMS) , New Delhi, India
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Daurio AM, Deschaine SL, Modabbernia A, Leggio L. Parsing out the role of dopamine D4 receptor gene (DRD4) on alcohol-related phenotypes: A meta-analysis and systematic review. Addict Biol 2020; 25:e12770. [PMID: 31149768 DOI: 10.1111/adb.12770] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/28/2019] [Accepted: 04/07/2019] [Indexed: 11/29/2022]
Abstract
Genetics account for moderate variation of individual differences in developing alcohol use disorder (AUD), but it is unclear which genetic variations contribute to AUD risk. One candidate gene investigated due to its association with AUD is the dopamine D4 receptor gene (DRD4), which contains a 48-base pair variable number tandem repeat (VNTR) in exon 3 of its coding region. To date, no quantitative synthesis of the published literature on the effects of DRD4 VNTR variation on alcohol-related phenotypes has been conducted. MEDLINE, Embase, Web of Science, and PsycInfo were searched for studies that reported on alcohol craving, alcohol consumption, severity of AUD, and case-control (AUD versus no diagnosis of AUD) studies in DRD4L (seven repeats or more) carriers compared with DRD4S (six repeats or less) homozygotes. Random-effects meta-analysis was used for all analyses. A pooled sample size of 655 to 13,360 of 28 studies were included. Compared with DRD4S homozygotes, DRD4L carriers had increased number of drinking days (SMD: 0.205; 95% CI: 0.008 to 0.402), binge drinking days (SMD: 0.217; 95% CI: 0.0532 to 0.380), and severity of AUD (SMD: 0.143; 95% CI: 0.028 to 0.259). There was no difference between DRD4 VNTR genotypes on drinks per drinking day, largest number of drinks per day/occasion, and case-control analysis. It was not possible to conduct a meta-analysis of the craving data, but a systematic review of this literature found mixed results on DRD4 VNTR genotype effect. The present meta-analysis suggests DRD4 VNTR variation may be a risk factor for problematic alcohol use. Our findings are limited, however, by the absence of ancestry data from studies included in our analysis, precluding our ability to adjust for population stratification. Due to the likelihood of type I error in candidate gene approaches, our work highlights the critical need for studies with larger and more inclusive samples that account for sex and genetic ancestry to fully understand this relationship.
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Affiliation(s)
- Allison M. Daurio
- Department of PsychologyFlorida State University Tallahassee FL USA
- Section on Clinical Psychoneuroendocrinology and Neuropsychopharmacology, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Basic Research and National Institute on Drug Abuse Intramural Research ProgramNational Institutes of Health Bethesda MD USA
| | - Sara L. Deschaine
- Section on Clinical Psychoneuroendocrinology and Neuropsychopharmacology, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Basic Research and National Institute on Drug Abuse Intramural Research ProgramNational Institutes of Health Bethesda MD USA
| | - Amirhossein Modabbernia
- Department of Psychiatry and Seaver Autism CenterIcahn School of Medicine at Mount Sinai New York NY USA
| | - Lorenzo Leggio
- Section on Clinical Psychoneuroendocrinology and Neuropsychopharmacology, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Basic Research and National Institute on Drug Abuse Intramural Research ProgramNational Institutes of Health Bethesda MD USA
- Center for Alcohol and Addiction Studies, Department of Behavioral and Social SciencesBrown University Providence RI USA
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Probst C, Vu TM, Epstein JM, Nielsen AE, Buckley C, Brennan A, Rehm J, Purshouse RC. The Normative Underpinnings of Population-Level Alcohol Use: An Individual-Level Simulation Model. HEALTH EDUCATION & BEHAVIOR 2020; 47:224-234. [PMID: 32090651 PMCID: PMC7069782 DOI: 10.1177/1090198119880545] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background. By defining what is "normal," appropriate, expected, and unacceptable, social norms shape human behavior. However, the individual-level mechanisms through which social norms impact population-level trends in health-relevant behaviors are not well understood. Aims. To test the ability of social norms mechanisms to predict changes in population-level drinking patterns. Method. An individual-level model was developed to simulate dynamic normative mechanisms and behavioral rules underlying drinking behavior over time. The model encompassed descriptive and injunctive drinking norms and their impact on frequency and quantity of alcohol use. A microsynthesis initialized in 1979 was used as a demographically representative synthetic U.S. population. Three experiments were performed in order to test the modelled normative mechanisms. Results. Overall, the experiments showed limited influence of normative interventions on population-level alcohol use. An increase in the desire to drink led to the most meaningful changes in the population's drinking behavior. The findings of the experiments underline the importance of autonomy, that is, the degree to which an individual is susceptible to normative influence. Conclusion. The model was able to predict theoretically plausible changes in drinking patterns at the population level through the impact of social mechanisms. Future applications of the model could be used to plan norms interventions pertaining to alcohol use as well as other health behaviors.
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Affiliation(s)
- Charlotte Probst
- Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Heidelberg Institute of Global Health, Faculty of Medicine, University of Heidelberg, Heidelberg, Germany
| | | | - Joshua M Epstein
- New York University, New York, NY, USA
- Santa Fe Institute, Santa Fe, New Mexico, USA
| | | | | | | | - Jürgen Rehm
- Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
- Technische Universität Dresden, Dresden, Germany
- Sechenov First Moscow State Medical University, Moscow, Russia
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24
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King CE, Gano A, Becker HC. The role of oxytocin in alcohol and drug abuse. Brain Res 2020; 1736:146761. [PMID: 32142721 DOI: 10.1016/j.brainres.2020.146761] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 02/07/2023]
Abstract
The neuropeptide oxytocin (OXT) plays a key role in adaptive processes associated with reward, tolerance, memory and stress responses. Through interactions with brain reward and stress systems, OXT is known to play a role in several neuropsychiatric disorders, particularly those that involve altered social integration, such as alcohol and drug addiction (Heilig et al., 2016). As such, there is growing interest in the oxytocin system as a potential therapeutic target for the treatment of alcohol and substance use disorders. Accumulating preclinical evidence suggests that administration of OXT influences the development of tolerance, sensitization and withdrawal symptoms, and modulates numerous alcohol/drug-seeking and alcohol/drug-taking behaviors. Further, there is some evidence to suggest that OXT may help to reverse neuroadaptations that occur as a result of chronic alcohol or drug exposure. To date, there have been only a handful of clinical studies conducted in alcohol and drug dependent populations. This review summarizes the preclinical and clinical literature on the effects of OXT administration on alcohol- and drug-related behaviors. In addition, we discuss OXT interactions with the hypothalamic-pituitaryadrenal axis and multiple neurotransmitter systems within addiction circuitry.
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Affiliation(s)
- Courtney E King
- Charleston Alcohol Research Center, Department of Psychiatry and Neuroscience, Medical University of South Carolina & VAMC, Charleston, SC 29425, United States
| | - Anny Gano
- Charleston Alcohol Research Center, Department of Psychiatry and Neuroscience, Medical University of South Carolina & VAMC, Charleston, SC 29425, United States
| | - Howard C Becker
- Charleston Alcohol Research Center, Department of Psychiatry and Neuroscience, Medical University of South Carolina & VAMC, Charleston, SC 29425, United States.
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25
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Kethawath SM, Jain R, Dhawan A, Sarkar S. A review of peripheral brain-derived neurotrophic factor levels in alcohol-dependent patients: Current understanding. Indian J Psychiatry 2020; 62:15-20. [PMID: 32001926 PMCID: PMC6964459 DOI: 10.4103/psychiatry.indianjpsychiatry_134_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/14/2019] [Accepted: 10/28/2019] [Indexed: 11/04/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays a crucial role in neuroplasticity of the brain, and its role in alcohol dependence has been explored in the recent past. Animal studies suggest that BDNF may function as a protective factor in transition from social drinking to an alcohol use disorder. However, clinical studies have not been able to establish similar findings and have shown mixed results. In order to obtain a comprehensive understanding, the current review aims to evaluate the existing literature on the role of BDNF in alcohol dependence. Articles were retrieved using search engines PubMed and Google Scholar. Original research studies focusing on human participants, published in English till October 2018 were reviewed. Studies which measured BDNF levels in serum or plasma or both were included in this study. A total of 13 studies were found which compared BDNF levels in alcohol-dependent patients with control population. The studies have mixed findings. Seven studies measured BDNF levels across the abstinence period, and most of the studies show improving BDNF levels across the abstinence. The current review supports the notion that BDNF plays an important role in the neuroplasticity of alcohol dependence. However, it is premature at this stage to draw conclusions that BDNF may be used as a biomarker, as there have been inconclusive findings when compared with control population. Future studies with longer follow-ups, larger sample size, comparing early and late periods of alcohol abstinence are required for better understanding of the role BDNF in alcohol dependence.
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Affiliation(s)
| | - Raka Jain
- Department of Psychiatry and National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Anju Dhawan
- Department of Psychiatry and National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Siddharth Sarkar
- Department of Psychiatry and National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India
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26
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Zhao W, Hu Y, Li C, Li N, Zhu S, Tan X, Li M, Zhang Y, Xu Z, Ding Z, Hu L, Liu Z, Sun J. Transplantation of fecal microbiota from patients with alcoholism induces anxiety/depression behaviors and decreases brain mGluR1/PKC ε levels in mouse. Biofactors 2020; 46:38-54. [PMID: 31518024 DOI: 10.1002/biof.1567] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 08/20/2019] [Indexed: 12/11/2022]
Abstract
Recent studies have revealed that the gut microbiota participates in the psychiatric behavior changes in disorders associated with alcohol. But it still remains unknown whether alcoholism is involved in changes in gut microbiota and its underlying mechanism is also not clear. Here, we tested the gut microbiota of patients with alcoholism and conducted fecal microbiota transplantation (FMT) from patients with alcoholism to C57BL/6J mice whose gut microbiota had been sharply suppressed with antibiotics (ABX). Then we evaluated their alcohol preference degree, anxiety, and depression-like behaviors and social interaction behaviors, together with molecular changes in the medial prefrontal cortex (mPFC) and nucleus accumbens (NAc). Our data indicated that the gut microbiota of patients with alcoholism was drastically different from those of the healthy adults. The abundance of p_Firmicutes was significantly increased whereas p_Bacteroidetes was decreased. Compared to mice transplanted with fecal microbiota from healthy male adults, the mice accepting fecal microbiota from patients with alcoholism showed (a) anxiety-like and depression-like behaviors, (b) decreased social interaction behaviors, (c) spontaneous alcohol preference, and (d) decreased brain-derived neurotrophic factor (BDNF), alpha 1 subunit of GABA type A receptor (α1GABAA R) in mPFC and decreased metabotropic glutamate receptors 1 (mGluR1), protein kinase C (PKC) ε in NAc. Overall, our results suggest that fecal microbiota from patients with alcoholism did induce a status like alcohol dependence in C57BL/6J mice. The decreased expression of BDNF, α1GABAA R, and mGluR1/ PKC ε may be the underlying mechanism.
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Affiliation(s)
- Wenbo Zhao
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Ying Hu
- Department of Pediatrics, Jinan Zhangqiu District Hospital of TCM, Shandong, China
| | - Chuangang Li
- Department of Anesthesiology, Second Hospital of Shandong University, Shandong, China
| | - Ning Li
- Department of Anesthesiology, Second Hospital of Shandong University, Shandong, China
| | - Shaowei Zhu
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Xu Tan
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Meng Li
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Yue Zhang
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Zheng Xu
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Zhaoxi Ding
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
| | - Lingming Hu
- Department of Psychiatry, Shandong University School of Medicine, Jinan, Shandong, China
| | - Zengxun Liu
- Department of Psychiatry, Shandong University School of Medicine, Jinan, Shandong, China
| | - Jinhao Sun
- Department of Anatomy, Shandong University School of Medicine, Jinan, Shandong, China
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27
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Özsoy F, Alim S. Optical coherence tomography findings in patients with alcohol use disorder and their relationship with clinical parameters. Cutan Ocul Toxicol 2019; 39:54-60. [PMID: 31847594 DOI: 10.1080/15569527.2019.1700379] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Purpose: In our study, we aimed to investigate the ganglion cell-inner plexiform layer thickness (GCIPL), retinal nerve fibre layer thickness (RNFL), mean macular volume (MMV), central macular thickness (CMT), mean macular thickness (MMT), and choroidal thickness (CT) values with optical coherence tomography (OCT) in patients who are diagnosed with alcohol use disorder (AUD).Materials and methods: The study included 43 patients who were diagnosed with AUD, and 43 healthy controls. Detailed biomicroscopic examinations of all the participants, visual acuity, intraocular pressure, anterior and posterior segment examinations, and then, OCT measurements were carried out.Results: Although the measured values for RNFL in the superior and temporal quadrant are within normal limits, they were slightly higher compared to those in the control group (p values 0.127 and 0.191 for superior quadrant and temporal quadrant, respectively). The CT measurements in all quadrants were higher than the control group; however, these measurements were not statistically significant (p > 0.05). When the relation between clinical features and OCT findings of the patients were examined, it was determined that the ages of the patients were statistically significantly and inversely correlated with the temporal CT and also the nasal and temporal quadrants of RNFL.Conclusions: Our study is the first study that examines the retinal GCIPL and CT with OCT in patients who are diagnosed with AUD. In our results, it was determined that there were no statistically significant differences between the participants in terms of OCT parameters. Further studies with larger sampling groups evaluating neurotransmission findings may provide wider results.
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Affiliation(s)
- Filiz Özsoy
- Clinic of Psychiatry, Tokat State Hospital, Tokat, Turkey
| | - Sait Alim
- Department of Ophthalmology, School of Medicine, Gaziosmanpaşa University Hospital, Tokat, Turkey
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28
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Bi-directional Acceleration of Alcohol Use and Opioid Use Disorder. JOURNAL OF DRUG AND ALCOHOL RESEARCH 2019; 2019:236084. [PMID: 32440365 PMCID: PMC7241514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Alcohol is the most widely used addictive substance. Severe alcohol abuse is diagnosed as "alcohol use disorder" (AUD). A common and harmful drinking pattern is binge drinking that elevates a person's blood alcohol concentration to ≥ 0.08%. Such drinking may be an early indicator of AUD. Opioid misuse and dependence have become worldwide crises. Patterned consumption of various opioids can develop into opioid use disorder (OUD). An intertwined epidemic exists between opioid abuse, alcohol addiction, and binge drinking. Currently, studies on the interaction of AUD and OUD are limited and the underlying mechanisms linking these disorders remains unclear. We reviewed studies on AUD and OUD and utilized Ingenuity Pathway Analysis (IPA) to identify mechanisms of AUD and OUD interaction and potential gene targets for therapeutic agents. According to IPA Canonical Pathways Analysis, Gamma-aminobutyric Acid (GABA) Receptor Signaling, Neuroinflammation Signaling Pathway, Opioid Signaling Pathway and Dopamine-DARPP32 Feedback in cAMP Signaling are potential contributors to the interaction of AUD and OUD.
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29
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Shen WW. Anticraving therapy for alcohol use disorder: A clinical review. Neuropsychopharmacol Rep 2019; 38:105-116. [PMID: 30175522 PMCID: PMC7292332 DOI: 10.1002/npr2.12028] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/11/2018] [Accepted: 06/11/2018] [Indexed: 12/13/2022] Open
Abstract
Aim In this review, the author focused on anticraving therapy for alcohol use disorder (AUD) defined by DMS‐5. A comprehensive review was carried out on the available published papers on anticraving drugs for treating AUD patients. Methods The author described all drugs with anticraving benefits for treating AUD patients approved by the Food and Drug Administration of the United States (US FDA) and European Medicines Agency of the European Union. Then, the commonly prescribed anticraving drugs and those under development were also described. Results The US FDA‐approved anticraving drugs included acamprosate and naltrexone, and those approved by European Medicines Agency were gamma‐hydroxybutyrate and nalmefene. The author also highlighted topiramate, gabapentin, ondansetron, LY196044, ifenprodil, varenicline, ABT‐436, mifepristone, citicoline, and baclofen. The putative mechanisms of action of and the use in clinical practice of those anticraving drugs were also described. Conclusion Although slowly developing, the field of anticraving drugs is getting into shape as a promising entity of a pharmaceutical class of drugs. Then, the author addressed on the underused issues of those recommended, and suggested anticraving drugs by the practice guideline of the American Psychiatric Association. The author urges that clinicians should be more “adventurous” in prescribing those promising drugs because benefits of those anticraving drugs are far‐outweighing the possible side effects of anticraving drugs, or the harms of untreated AUD itself.
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Affiliation(s)
- Winston W Shen
- Department of Psychiatry, Wan Fang Medical Center, Taipei Medical University, Taipei, Taiwan.,Department of Psychiatry, College of Medicine, Taipei Medical University, Taipei, Taiwan
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30
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Colombo M, Heinz A. Explanatory integration, computational phenotypes, and dimensional psychiatry: The case of alcohol use disorder. THEORY & PSYCHOLOGY 2019. [DOI: 10.1177/0959354319867392] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We compare three theoretical frameworks for pursuing explanatory integration in psychiatry: a new dimensional framework grounded in the notion of computational phenotype, a mechanistic framework, and a network of symptoms framework. Considering the phenomenon of alcoholism, we argue that the dimensional framework is the best for effectively integrating computational and mechanistic explanations with phenomenological analyses.
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31
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Melbourne JK, Thompson KR, Peng H, Nixon K. Its complicated: The relationship between alcohol and microglia in the search for novel pharmacotherapeutic targets for alcohol use disorders. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 167:179-221. [PMID: 31601404 DOI: 10.1016/bs.pmbts.2019.06.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alcohol use disorder (AUD) is a chronic relapsing disorder with wide-ranging health consequences. Alcohol targets the central nervous system producing neurodegeneration and subsequent cognitive and behavioral deficits, but the mechanisms behind these effects remain unclear. Recently, evidence has been mounting for the role of neuroimmune activation in the pathogenesis of AUDs, but our nascent state of knowledge about the interaction of alcohol with the neuroimmune system supports that the relationship is complicated. As the resident macrophage of the central nervous system, microglia are a central focus. Human and animal research on the interplay between microglia and alcohol in AUDs has proven to be complex, and though early research focused on a pro-inflammatory phenotype of microglia, the anti-inflammatory and homeostatic roles of microglia must be considered. How these new roles for microglia should be incorporated into our thinking about the neuroimmune system in AUDs is discussed in the context of developing novel pharmacotherapies for AUDs.
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Affiliation(s)
- Jennifer K Melbourne
- The University of Texas at Austin, College of Pharmacy, Division of Pharmacology & Toxicology, Austin, TX, United States
| | - K Ryan Thompson
- The University of Texas at Austin, College of Pharmacy, Division of Pharmacology & Toxicology, Austin, TX, United States
| | - Hui Peng
- University of Kentucky, College of Pharmacy, Department of Pharmaceutical Sciences, Lexington, KY, United States
| | - Kimberly Nixon
- The University of Texas at Austin, College of Pharmacy, Division of Pharmacology & Toxicology, Austin, TX, United States.
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32
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Laat B, Weerasekera A, Leurquin‐Sterk G, Gsell W, Bormans G, Himmelreich U, Casteels C, Van Laere K. Effects of alcohol exposure on the glutamatergic system: a combined longitudinal 18 F-FPEB and 1 H-MRS study in rats. Addict Biol 2019; 24:696-706. [PMID: 29790622 DOI: 10.1111/adb.12635] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 03/06/2018] [Accepted: 04/18/2018] [Indexed: 12/17/2022]
Abstract
In a longitudinal rat model of alcohol consumption, we showed that exposure to alcohol decreased the concentration of glutamate in the prefrontal cortex, whereas a normalization occurred during abstinence. 18F-FPEB PET scans revealed that pre-exposure mGluR5 availability in the nucleus accumbens was associated with future alcohol preference. Finally, alcohol exposure induced a decrease in mGluR5 availability in the bilateral hippocampus and amygdala compared with baseline, and in the hippocampus and striatum compared with saccharin (Figure).
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Affiliation(s)
- Bart Laat
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven/University Hospital Leuven, Division of Nuclear MedicineDepartment of Imaging and Pathology Belgium
| | - Akila Weerasekera
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven, Biomedical MRI unitDepartment of Imaging and Pathology Belgium
| | - Gil Leurquin‐Sterk
- KU Leuven – University of Leuven/University Hospital Leuven, Division of Nuclear MedicineDepartment of Imaging and Pathology Belgium
| | - Willy Gsell
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven, Biomedical MRI unitDepartment of Imaging and Pathology Belgium
| | - Guy Bormans
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven, Laboratory for RadiopharmacyDepartment of Pharmaceutical and Pharmacological Sciences Belgium
| | - Uwe Himmelreich
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven, Biomedical MRI unitDepartment of Imaging and Pathology Belgium
| | - Cindy Casteels
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven/University Hospital Leuven, Division of Nuclear MedicineDepartment of Imaging and Pathology Belgium
| | - Koen Van Laere
- KU Leuven – University of Leuven, MoSAICMolecular Small Animal Imaging Center Belgium
- KU Leuven – University of Leuven/University Hospital Leuven, Division of Nuclear MedicineDepartment of Imaging and Pathology Belgium
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Stoica SI, Tănase I, Ciobanu V, Onose G. Initial researches on neuro-functional status and evolution in chronic ethanol consumers with recent traumatic spinal cord injury. J Med Life 2019; 12:97-112. [PMID: 31406510 PMCID: PMC6685305 DOI: 10.25122/jml-2019-0026] [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: 02/18/2019] [Accepted: 03/21/2019] [Indexed: 12/01/2022] Open
Abstract
We found differences related to the neuro-functional deficiency and clinical progress, among non-consumers and chronic consumers of ethanol, with recent traumatic spinal cord injury (SCI). We present a synthesis of related data on lesion mechanisms in post-traumatic myelogenous disorders, namely some of the alcohols and their actions on the nervous system, with details on the influences exerted, in such afflictions, by the chronic consumption of ethanol. The subject is not frequently approached - according to a literature review with systematic elements, which we have done before - thus constituting a niche that deserves to be further explored. The applicative component of the article highlights statistical data resulted from a retrospective study regarding the specialized casuistry from the Neuromuscular Recovery Clinic of the "Bagdasar Arseni" Emergency Clinical Hospital, following the comparative analysis of two groups of patients with recent SCI: non-consumers - the control group (n=780) - and chronic ethanol consumers - the study group (n=225) - with the addition of a prospective pilot component. Data processing has been achieved with SPSS 24. The American Spinal Injury Association Impairment Scale (AIS) mean motor scores differ significantly (tests: Mann-Whitney and t) between the control and study group in favor of the second, both at admission (p<0.001) and at discharge (p<0.001). AIS mean sensitive scores differ between the two lots, and also in favor of the study, but statistically significant only at discharge (p=0.048); the difference at admission is not significant (p=0.51) - possibly because of alcoholic-nutritional polyneuropathy. These findings, with numerous related details, later presented in the text, are surprising, which requires further studies and attempts of understanding.
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Affiliation(s)
- Simona Isabelle Stoica
- “Carol Davila” University of Medicine and Pharmacy (UMPCD), Bucharest, Romania
- Teaching Emergency Hospital “Bagdasar-Arseni” (TEHBA), Bucharest, Romania
| | - Ioana Tănase
- “Carol Davila” University of Medicine and Pharmacy (UMPCD), Bucharest, Romania
- Teaching Emergency Hospital “Bagdasar-Arseni” (TEHBA), Bucharest, Romania
| | - Vlad Ciobanu
- Politehnica University of Bucharest (PUB), Bucharest, Romania
| | - Gelu Onose
- “Carol Davila” University of Medicine and Pharmacy (UMPCD), Bucharest, Romania
- Teaching Emergency Hospital “Bagdasar-Arseni” (TEHBA), Bucharest, Romania
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Gerace E, Landucci E, Bani D, Moroni F, Mannaioni G, Pellegrini-Giampietro DE. Glutamate Receptor-Mediated Neurotoxicity in a Model of Ethanol Dependence and Withdrawal in Rat Organotypic Hippocampal Slice Cultures. Front Neurosci 2019; 12:1053. [PMID: 30733663 PMCID: PMC6353783 DOI: 10.3389/fnins.2018.01053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/27/2018] [Indexed: 11/15/2022] Open
Abstract
Long-term alcohol use can lead to alterations in brain structure and functions and, in some cases, to neurodegeneration. Several mechanisms have been proposed to explain ethanol (EtOH)-related brain injury. One of the most relevant mechanisms of alcohol-induced neurodegeneration involves glutamatergic transmission, but their exact role is not yet fully understood. We investigated the neurochemical mechanisms underlying the toxicity induced by EtOH dependence and/or withdrawal by exposing rat organotypic hippocampal slices to EtOH (100–300 mM) for 7 days and then incubating the slices in EtOH-free medium for the subsequent 24 h. EtOH withdrawal led to a dose-dependent CA1 pyramidal cell injury, as detected with propidium iodide fluorescence. Electron microscopy of hippocampal slices revealed that not only EtOH withdrawal but also 7 days chronic EtOH exposure elicited signs of apoptotic cell death in CA1 pyramidal cells. These data were supported by electrophysiological recordings of spontaneus Excitatory Post Synaptic Currents (sEPSCs) from CA1 pyramidal cells. The average amplitude of sEPSCs in slices treated with EtOH for 7 days was significantly increased, and even more so during the first 30 min of EtOH withdrawal, suggesting that the initial phase of the neurodegenerative process could be due to an excitotoxic mechanism. We then analyzed the expression levels of presynaptic (vGlut1, vGlut2, CB1 receptor, synaptophysin) and postsynaptic (PSD95, GluN1, GluN2A, GluN2B, GluA1, GluA2, mGluR1 and mGluR5) proteins after 7 days EtOH incubation or after EtOH withdrawal. We found that only GluA1 and mGluR5 expression levels were significantly increased after EtOH withdrawal and, in neuroprotection experiments, we observed that AMPA and mGluR5 antagonists attenuated EtOH withdrawal-induced toxicity. These data suggest that chronic EtOH treatment promotes abnormal synaptic transmission that may lead to CA1 pyramidal cell death after EtOH withdrawal through glutamate receptors and increased excitotoxicity.
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Affiliation(s)
- Elisabetta Gerace
- Section of Clinical Pharmacology and Oncology, Department of Health Sciences, University of Florence, Florence, Italy.,Section of Pharmacology and Toxicology, Department of Neuroscience, Psychology, Drug Research and Child Health (NeuroFarBa), University of Florence, Florence, Italy
| | - Elisa Landucci
- Section of Clinical Pharmacology and Oncology, Department of Health Sciences, University of Florence, Florence, Italy
| | - Daniele Bani
- Research Unit of Histology and Embryology, Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Flavio Moroni
- Section of Pharmacology and Toxicology, Department of Neuroscience, Psychology, Drug Research and Child Health (NeuroFarBa), University of Florence, Florence, Italy
| | - Guido Mannaioni
- Section of Pharmacology and Toxicology, Department of Neuroscience, Psychology, Drug Research and Child Health (NeuroFarBa), University of Florence, Florence, Italy
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35
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Caputo F, Agabio R, Vignoli T, Patussi V, Fanucchi T, Cimarosti P, Meneguzzi C, Greco G, Rossin R, Parisi M, Mioni D, Arico' S, Palmieri VO, Zavan V, Allosio P, Balbinot P, Amendola MF, Macciò L, Renzetti D, Scafato E, Testino G. Diagnosis and treatment of acute alcohol intoxication and alcohol withdrawal syndrome: position paper of the Italian Society on Alcohol. Intern Emerg Med 2019; 14:143-160. [PMID: 30187438 DOI: 10.1007/s11739-018-1933-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/22/2018] [Indexed: 02/07/2023]
Abstract
The chronic use of alcohol can lead to the onset of an alcohol use disorder (AUD). About 50% of subjects with an AUD may develop alcohol withdrawal syndrome (AWS) when they reduce or discontinue their alcohol consumption and, in 3-5% of them, convulsions and delirium tremens (DTs), representing life-threatening complications, may occur. Unfortunately, few physicians are adequately trained in identifying and treating AWS. The Italian Society on Alcohol has, therefore, implemented a task force of specialists to draw up recommendations for the treatment of AWS with the following main results: (1) while mild AWS may not require treatment, moderate and severe AWS need to be pharmacologically treated; (2) out-patient treatment is appropriate in patients with mild or moderate AWS, while patients with severe AWS need to be treated as in-patients; (3) benzodiazepines, BDZs are the "gold standard" for the treatment of AWS and DTs; (4) alpha-2-agonists, beta-blockers, and neuroleptics may be used in association when BDZs do not completely resolve specific persisting symptoms of AWS; (5) in the case of a refractory form of DTs, the use of anaesthetic drugs (propofol and phenobarbital) in an intensive care unit is appropriate; (6) alternatively to BDZs, sodium oxybate, clomethiazole, and tiapride approved in some European Countries for the treatment of AWS may be employed for the treatment of moderate AWS; (7) anti-convulsants are not sufficient to suppress AWS, and they may be used only in association with BDZs for the treatment of refractory forms of convulsions in the course of AWS.
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Affiliation(s)
- Fabio Caputo
- Unit of Internal Medicine, Department of Internal Medicine, SS Annunziata Hospital, Via Vicini 2, 44042, Cento, Ferrara, Italy.
- "G. Fontana" Centre for the Study and Multidisciplinary Treatment of Alcohol Addiction, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
| | - Roberta Agabio
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Teo Vignoli
- Unit of Addiction Treatment, Lugo, Ravenna, Italy
| | | | | | | | | | | | | | | | - Davide Mioni
- Nursing Home Parco dei Tigli, Teolo, Padova, Italy
| | - Sarino Arico'
- Gastroenterology Unit, Mauriziano Hospital, Turin, Italy
| | - Vincenzo Ostilio Palmieri
- "Murri" Clinic of Internal Medicine, Department of Biomedical Science and Human Oncology, University of Bari, Bari, Italy
| | | | | | | | | | | | - Doda Renzetti
- Department of Internal Medicine, Mater Dei Hospital, Bari, Italy
| | - Emanuele Scafato
- National Observatory on Alcohol, National Institute of Health, Rome, Italy
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36
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Mühle C, Weinland C, Gulbins E, Lenz B, Kornhuber J. Peripheral Acid Sphingomyelinase Activity Is Associated with Biomarkers and Phenotypes of Alcohol Use and Dependence in Patients and Healthy Controls. Int J Mol Sci 2018; 19:ijms19124028. [PMID: 30551571 PMCID: PMC6320816 DOI: 10.3390/ijms19124028] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 11/30/2018] [Accepted: 12/04/2018] [Indexed: 01/04/2023] Open
Abstract
By catalyzing the hydrolysis of sphingomyelin into ceramide, acid sphingomyelinase (ASM) changes the local composition of the plasma membrane with effects on receptor-mediated signaling. Altered enzyme activities have been noted in common human diseases, including alcohol dependence. However, the underlying mechanisms remain largely unresolved. Blood samples were collected from early-abstinent alcohol-dependent in-patients (n[♂] = 113, n[♀] = 87) and matched healthy controls (n[♂] = 133, n[♀] = 107), and analyzed for routine blood parameters and serum ASM activity. We confirmed increased secretory ASM activities in alcohol-dependent patients compared to healthy control subjects, which decreased slightly during detoxification. ASM activity correlated positively with blood alcohol concentration, withdrawal severity, biomarkers of alcohol dependence (liver enzyme activities of gamma-glutamyl transferase, alanine aminotransferase, aspartate aminotransferase; homocysteine, carbohydrate-deficient transferrin; mean corpuscular volume, and creatine kinase). ASM activity correlated negatively with leukocyte and thrombocyte counts. ASM and gamma-glutamyl transferase were also associated in healthy subjects. Most effects were similar for males and females with different strengths. We describe previously unreported associations between ASM activity and markers of liver damage and myelosuppression. Further research should investigate whether this relationship is causal, or whether these parameters are part of a common pathway in order to gain insights into underlying mechanisms and develop clinical applications.
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Affiliation(s)
- Christiane Mühle
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany.
| | - Christian Weinland
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany.
| | - Erich Gulbins
- Department of Molecular Biology, University of Duisburg-Essen, D-45259 Essen, Germany.
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267-0558, USA.
| | - Bernd Lenz
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany.
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany.
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Nipper MA, Jensen JP, Helms ML, Ford MM, Crabbe JC, Rossi DJ, Finn DA. Genotype Differences in Sensitivity to the Anticonvulsant Effect of the Synthetic Neurosteroid Ganaxolone during Chronic Ethanol Withdrawal. Neuroscience 2018; 397:127-137. [PMID: 30513375 DOI: 10.1016/j.neuroscience.2018.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 11/26/2018] [Accepted: 11/28/2018] [Indexed: 01/05/2023]
Abstract
Sensitivity to anticonvulsant effects of the γ-aminobutyric acidA receptor-active neurosteroid allopregnanolone (ALLO) during ethanol withdrawal varies across genotypes, with high sensitivity in genotypes with mild withdrawal and low sensitivity in genotypes with high withdrawal. The present studies determined whether the resistance to ALLO during withdrawal in mouse genotypes with high handling-induced convulsions (HICs) during withdrawal could be overcome with use of ganaxolone (GAN), the metabolically stable derivative of ALLO. In separate studies, male and female Withdrawal Seizure-Prone (WSP-1) and DBA/2J (D2) mice were exposed to air (controls) or 72-h ethanol vapor and then were scored for HICs during withdrawal (hourly for the first 12 h, then at hours 24 and 25). After the HIC scoring at hours 5 and 9, mice were injected with 10 mg/kg GAN or vehicle. Area under the HIC curve (AUC) for hours 5-12 was analyzed. In control WSP-1 mice, GAN significantly reduced AUC by 52% (males) and 63% (females), with effects that were absent or substantially reduced during withdrawal. In contrast, GAN significantly reduced AUC in both control and ethanol-withdrawing male and female D2 mice. AUC was decreased by 81% (males) and 70% (females) in controls and by 35% (males) and 21% (females) during withdrawal. The significant anticonvulsant effect of GAN during withdrawal in D2 but not WSP-1 mice suggests that different mechanisms may contribute to ALLO insensitivity during withdrawal in these two genotypes. Importantly, the results in D2 mice suggest that GAN may be a useful treatment for ethanol withdrawal-induced seizures.
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Affiliation(s)
- Michelle A Nipper
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States.
| | - Jeremiah P Jensen
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States
| | - Melinda L Helms
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States
| | - Matthew M Ford
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States; Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, United States
| | - John C Crabbe
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States; Portland Alcohol Research Center, VA Portland Health Care System, Portland, OR 97239, United States
| | - David J Rossi
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States; Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA 99164, United States
| | - Deborah A Finn
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, United States; Portland Alcohol Research Center, VA Portland Health Care System, Portland, OR 97239, United States
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38
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Kim YG, Hwang J, Choi H, Lee S. Development of a Column-Switching HPLC-MS/MS Method and Clinical Application for Determination of Ethyl Glucuronide in Hair in Conjunction with AUDIT for Detecting High-Risk Alcohol Consumption. Pharmaceutics 2018; 10:E84. [PMID: 29973564 PMCID: PMC6161131 DOI: 10.3390/pharmaceutics10030084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/22/2018] [Accepted: 06/28/2018] [Indexed: 01/01/2023] Open
Abstract
It is critical to assess the severity of alcohol consumption in certain diseases such as alcohol liver disease and alcohol addiction. Ethyl glucuronide (EtG) is a highly stable metabolite of ethanol in hair; thus, it was proposed as a long-term monitoring marker for alcohol consumption. Therefore, an HPLC-MS/MS method for EtG in hair was developed and applied to a clinical setting to assess the relevance of the EtG concentration and/or the Alcohol Use Disorders Identification Test (AUDIT) score to high-risk alcohol consumption. EtG was extracted from 10 mg of hair using water and analyzed using on-line sample purification coupled to HPLC-MS/MS. The diagnostic performances of the EtG concentration and/or the AUDIT score for detecting high-risk alcohol consumption were statistically evaluated between alcohol addicts (n = 44) and average alcohol users (n = 19). The on-line sample purification resulted in labor-saving with smaller sample amount. Both the EtG concentrations (4.0⁻587.4 pg/mg vs. 12.9⁻74.9 pg/mg) and the AUDIT scores (4⁻40 vs. 5⁻28) obtained from the alcohol addicts were significantly higher than those from the average alcohol users. The performance evaluation demonstrated that the integration score of the EtG concentration and the AUDIT score increased diagnostic performance for high-risk alcohol consumption.
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Affiliation(s)
- Yeon Gyeong Kim
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 42601, Korea.
| | - Jihye Hwang
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 42601, Korea.
| | - Hwakyung Choi
- Bugok National Hospital, 145 Bugok-ro, Bugok-myeon, Changnyeong-gun, Gyeongsangnam-do 50365, Korea.
| | - Sooyeun Lee
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 42601, Korea.
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39
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Acquas E, Salamone JD, Correa M. Editorial: Ethanol, Its Active Metabolites, and Their Mechanisms of Action: Neurophysiological and Behavioral Effects. Front Behav Neurosci 2018; 12:95. [PMID: 29867394 PMCID: PMC5967174 DOI: 10.3389/fnbeh.2018.00095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 04/23/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - John D Salamone
- Department of Psychology, University of Connecticut, Storrs, CT, United States
| | - Mercè Correa
- Department of Psychobiology, Universitat Jaume I, Castelló, Spain
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40
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Acquas E, Salamone JD, Correa M. Editorial: Ethanol, Its Active Metabolites, and Their Mechanisms of Action: Neurophysiological and Behavioral Effects. Front Behav Neurosci 2018. [PMID: 29867394 DOI: 10.3389/fnbeh.2018.00095 10.3389/978-2-88945-516-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - John D Salamone
- Department of Psychology, University of Connecticut, Storrs, CT, United States
| | - Mercè Correa
- Department of Psychobiology, Universitat Jaume I, Castelló, Spain
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41
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Orellana ER, Jamis C, Horvath N, Hajnal A. Effect of vertical sleeve gastrectomy on alcohol consumption and preferences in dietary obese rats and mice: A plausible role for altered ghrelin signaling. Brain Res Bull 2018; 138:26-36. [PMID: 28802901 PMCID: PMC6537102 DOI: 10.1016/j.brainresbull.2017.08.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/05/2017] [Accepted: 08/07/2017] [Indexed: 12/13/2022]
Abstract
Vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass (RYGB) are the most common surgical options for the treatment of obesity and metabolic disorder. Whereas RYGB may result in greater and more durable weight loss, recent clinical and pre-clinical studies in rats have raised concerns that RYGB surgery may increase risk for alcohol use disorder (AUD). In contrast, recent clinical reports suggest a lesser risk for AUD following VSG, although no preclinical studies have been done to confirm that. Therefore, the present study sought to determine the effects of VSG on ethanol intake and preferences in rodent models using protocols similar to those previously used in animal studies for RYGB. Male Sprague Dawley rats and male C57B6 mice were made obese on a high fat diet (60%kcal from fat) and received VSG or no surgery (controls). All animals then were given access to increasing concentrations of ethanol (2%, 4%, 6%, and 8%), presented for few days each. Compared to controls, VSG rats consumed significantly less of 2, 6 and 8% ethanol and showed significantly reduced preferences to 6 and 8% ethanol over water. VSG mice also displayed reduced intake and preference for 6 and 8% ethanol solutions. After a two-week period of forced abstinence, 8% ethanol was reintroduced and the VSG rats and mice continued to exhibit reduced consumption and less preference for ethanol. Regarding the underlying mechanism, we hypothesized that the removal of the ghrelin producing part of the stomach in the VSG surgery is a possible contributor to the observed reduced ethanol preference. To test for functional changes at the ghrelin receptors, the VSG and control rats were given IP injections of acyl-ghrelin (2.5nmol and 5nmol) prior to ethanol access. Neither concentration of ghrelin resulted in a significant increase in 8% ethanol consumption of VSG or control subjects. Next, the rats were given IP injections of the ghrelin receptor antagonist, JMV (2.5mg/kg body weight). This dose induced a significant reduction in 8% ethanol consumption in the VSG group, but no effect on ethanol intake in the controls. While ghrelin injection was uninformative, increased sensitivity to subthreshold doses of the ghrelin receptor antagonist may indicate reduced ghrelin signaling following VSG. Overall, these findings suggest that bariatric patients with increased susceptibility to AUD may benefit from receiving VSG instead of RYGB surgery, and that changes in ghrelin signaling, at least in part, may play a role in the differential AUD risks between the two most commonly performed bariatric surgical procedures.
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Affiliation(s)
- Elise R Orellana
- Department of Neural and Behavioral Sciences, The Pennsylvania State University, College of Medicine, Hershey, PA, 17033, USA
| | - Catherine Jamis
- Department of Neural and Behavioral Sciences, The Pennsylvania State University, College of Medicine, Hershey, PA, 17033, USA
| | - Nelli Horvath
- Department of Neural and Behavioral Sciences, The Pennsylvania State University, College of Medicine, Hershey, PA, 17033, USA
| | - Andras Hajnal
- Department of Neural and Behavioral Sciences, The Pennsylvania State University, College of Medicine, Hershey, PA, 17033, USA.
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Bray JG, Reyes KC, Roberts AJ, Gruol DL. Altered hippocampal synaptic function in transgenic mice with increased astrocyte expression of CCL2 after withdrawal from chronic alcohol. Neuropharmacology 2018; 135:113-125. [PMID: 29499275 DOI: 10.1016/j.neuropharm.2018.02.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/22/2018] [Accepted: 02/26/2018] [Indexed: 11/29/2022]
Abstract
CNS actions of the chemokine CCL2 are thought to play a role in a variety of conditions that can have detrimental consequences to CNS function, including alcohol use disorders. We used transgenic mice that express elevated levels of CCL2 in the CNS (CCL2-tg) and their non-transgenic (non-tg) littermate control mice to investigate long-term consequences of CCL2/alcohol/withdrawal interactions on hippocampal synaptic function, including excitatory synaptic transmission, somatic excitability, and synaptic plasticity. Two alcohol exposure paradigms were tested, a two-bottle choice alcohol (ethanol) drinking protocol (2BC drinking) and a chronic intermittent alcohol (ethanol) (CIE/2BC) protocol. Electrophysiological measurements of hippocampal function were made ex vivo, starting ∼0.6 months after termination of alcohol exposure. Both alcohol exposure/withdrawal paradigms resulted in CCL2-dependent interactions that altered the effects of alcohol on synaptic function. The synaptic alterations differed for the two alcohol exposure paradigms. The 2BC drinking/withdrawal treatment had no apparent long-term consequences on synaptic responses and long-term potentiation (LTP) in hippocampal slices from non-tg mice, whereas synaptic transmission was reduced but LTP was enhanced in hippocampal slices from CCL2-tg mice. In contrast, the CIE/2BC/withdrawal treatment enhanced synaptic transmission but reduced LTP in the non-tg hippocampus, whereas there were no apparent long-term consequences to synaptic transmission and LTP in hippocampus from CCL2-tg mice, although somatic excitability was enhanced. These results support the idea that alcohol-induced CCL2 production can modulate the effects of alcohol exposure/withdrawal on synaptic function and indicate that CCL2/alcohol interactions can vary depending on the alcohol exposure/withdrawal protocol used.
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Affiliation(s)
- Jennifer G Bray
- Molecular and Cellular Neuroscience Department, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Kenneth C Reyes
- Molecular and Cellular Neuroscience Department, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Amanda J Roberts
- Molecular and Cellular Neuroscience Department, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Donna L Gruol
- Molecular and Cellular Neuroscience Department, The Scripps Research Institute, La Jolla, CA 92037, USA.
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Free will in addictive behaviors: A matter of definition. Addict Behav Rep 2018; 5:94-103. [PMID: 29450231 PMCID: PMC5800588 DOI: 10.1016/j.abrep.2017.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/11/2017] [Indexed: 01/23/2023] Open
Abstract
Certain people are at risk for using alcohol or other drugs excessively and for developing problems with their use. Their susceptibility might arise from a variety of factors, including their genetic make-up, brain chemistry, family background, personality and other psychological variables, and environmental and sociocultural variables. Moreover, after substance use has become established, there are additional cognitive-motivational variables (e.g., substance-related attentional bias) that contribute to enacting behaviors consistent with the person's motivation to acquire and use the substance. People who are at such risk are likely to choose to use addictive substances even though doing so entails negative consequences. In the sense of complete freedom from being determined by causal factors, we believe that there is no such thing as free will, but defined as ability to make choices from among multiple options, even though the choices are ultimately governed by natural processes, addicted individuals are free to choose. Although they might appear unable to exercise this kind of free will in decisions about their substance use, addictive behaviors are ultimately always goal-directed and voluntary. Such goal pursuits manifest considerable flexibility. Even some severely addicted individuals can cease their use when the value of continuing the use abruptly declines or when the subjective cost of continuing the use is too great with respect to the incentives in other areas of their lives. Formal treatment strategies (e.g., contingency management, Systematic Motivational Counseling, cognitive training) can also be used to facilitate this reversal.
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Colombo G, Gessa GL. Suppressing Effect of Baclofen on Multiple Alcohol-Related Behaviors in Laboratory Animals. Front Psychiatry 2018; 9:475. [PMID: 30323777 PMCID: PMC6172300 DOI: 10.3389/fpsyt.2018.00475] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/10/2018] [Indexed: 12/18/2022] Open
Abstract
This paper summarizes the several lines of experimental evidence demonstrating the ability of the prototypic GABAB receptor agonist, baclofen, to suppress multiple alcohol-related behaviors in laboratory rodents and non-human primates exposed to validated experimental models of alcohol use disorder (AUD). Specifically, treatment with baclofen has repeatedly been reported to suppress alcohol-induced locomotor stimulation, alcohol drinking (including binge- and relapse-like drinking), operant oral alcohol self-administration, alcohol seeking, and reinstatement of alcohol seeking in rats and mice. Treatment with baclofen also reduced operant oral alcohol self-administration in baboons. Several of these effects appear to be mediated by GABAB receptors located in the ventral tegmental area. The often observed co-occurrence of "desired" pharmacological effects and "unwanted" sedative effects represents the major drawback of the preclinical, anti-alcohol profile of baclofen. Collectively, these data underline the role of the GABAB receptor in the mediation of several alcohol-related behaviors. These data possess remarkable translational value, as most of the above effects of baclofen have ultimately been reproduced in AUD patients.
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Affiliation(s)
- Giancarlo Colombo
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, Italy
| | - Gian Luigi Gessa
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, Italy
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45
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Acquas E, Salamone JD, Correa M. Editorial: Ethanol, Its Active Metabolites, and Their Mechanisms of Action: Neurophysiological and Behavioral Effects. Front Behav Neurosci 2018. [PMID: 29867394 PMCID: PMC5967174 DOI: 10.3389/fnbeh.2018.00095+10.3389/978-2-88945-516-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Affiliation(s)
- Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
- *Correspondence: Elio Acquas
| | - John D. Salamone
- Department of Psychology, University of Connecticut, Storrs, CT, United States
- John D. Salamone
| | - Mercè Correa
- Department of Psychobiology, Universitat Jaume I, Castelló, Spain
- Mercè Correa
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46
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Pharmacological analysis of Poecilotheria spider venoms in mice provides clues for human treatment. Toxicon 2017; 138:59-67. [DOI: 10.1016/j.toxicon.2017.08.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 11/20/2022]
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47
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Maccioni P, Lorrai I, Contini A, Leite-Morris K, Colombo G. Microinjection of baclofen and CGP7930 into the ventral tegmental area suppresses alcohol self-administration in alcohol-preferring rats. Neuropharmacology 2017; 136:146-158. [PMID: 29050951 DOI: 10.1016/j.neuropharm.2017.10.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/08/2017] [Accepted: 10/11/2017] [Indexed: 01/05/2023]
Abstract
Systemic administration of the orthosteric agonist, baclofen, and several positive allosteric modulators (PAMs) of the GABAB receptor has repeatedly been reported to decrease operant oral alcohol self-administration in rats. The aim of the present study was to evaluate the contribution of the mesolimbic dopamine system to the reducing effect of baclofen and GABAB PAMs on the reinforcing properties of alcohol. To this end, baclofen or the GABAB PAM CGP7930 were microinjected into the ventral tegmental area (VTA) of selectively bred, Sardinian alcohol-preferring (sP) rats trained to self-administer alcohol. Baclofen (0, 0.03, 0.1, and 0.3 μg) or CGP7930 (0, 5, 10, and 20 μg) were microinjected via indwelling unilateral guide cannula aiming at the left hemisphere of the VTA. Treatment with baclofen resulted in a dose-related suppression of the number of lever-responses for alcohol and the amount of self-administered alcohol. No dose of baclofen altered rat motor-performance, evaluated by the inverted screen test immediately before the self-administration session. Treatment with CGP7930 halved the number of lever-responses for alcohol and amount of self-administered alcohol, with no effect on rat motor-performance. Site-specificity was investigated testing the effect of microinjection of baclofen and CGP7930 into the left hemisphere of deep mesencephalic nucleus: compared to vehicle, neither 0.3 μg baclofen nor 20 μg CGP7930 altered lever-responding for alcohol and amount of self-administered alcohol. Collectively, the results of the present study suggest the involvement of GABAB receptors located in the VTA in the mediation of alcohol reinforcing properties in sP rats. This article is part of the "Special Issue Dedicated to Norman G. Bowery".
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Affiliation(s)
- Paola Maccioni
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA I-09042, Italy
| | - Irene Lorrai
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA I-09042, Italy
| | - Andrea Contini
- Department of Biomedical Sciences, University of Sassari, Sassari, SS I-07100, Italy
| | - Kimberly Leite-Morris
- Departments of Psychiatry, Pharmacology and Experimental Therapeutics, Boston University School of Medicine, VA Boston Healthcare System, Research Service, Boston, MA 02130, USA
| | - Giancarlo Colombo
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA I-09042, Italy.
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Pignon B, Labreuche J, Auffret M, Gautier S, Deheul S, Simioni N, Cottencin O, Bordet R, Duhamel A, Rolland B. The dose-effect relationship of baclofen in alcohol dependence: A 1-year cohort study. Hum Psychopharmacol 2017; 32. [PMID: 28517239 DOI: 10.1002/hup.2593] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/15/2016] [Accepted: 03/16/2017] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Our aim is to study the relationship between dose of baclofen and effectiveness in alcohol dependence. METHODS Two hundred two patients with alcohol dependence, who received baclofen treatment for drinking reduction, were followed up for 1 year. For each patient-month of treatment, the maximum daily dose of baclofen (DDB) and average weekly alcohol consumption (AWAC) were calculated. We defined a favorable drinking outcome as an AWAC under 200 g/w for at least 2 consecutive months. We divided the DDB of each patient-month into 3 categories (low dose: <90 mg/d, medium dose: 90-150 mg/d, and high dose: >150 mg/d) and investigated the relationship between reaching a favorable outcome and the concurrent DDB category in a time-varying Cox regression analysis. Hazard ratios (HRs) were adjusted based on age, sex, and initial AWAC. RESULTS One hundred forty subjects were followed during at least 1 month. Of these patients, 58 (41%) had a favorable drinking outcome. In comparison to low dose, medium dose was associated with a decreased rate of favorable drinking outcome (HR = 0.42; 95% CI [0.20, 0.88]), whereas no difference was found with high dose (HR = 1.31; 95% CI [0.65, 2.64]). CONCLUSION The relationship between dose of baclofen and favorable drinking outcome was U-shaped, that is, was increased at low and high doses compared to medium doses.
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Affiliation(s)
- Baptiste Pignon
- Psychiatry and Addiction Medicine Department, CHU Lille, Lille, France
| | - Julien Labreuche
- Department of Biostatistics, Univ. Lille, CHU Lille, EA 2694 - Santé publique : épidémiologie et qualité des soins, Lille, France
| | - Marine Auffret
- INSERM U1171, pharmacovigilance - addictovigilance, Univ. Lille, Lille, France
| | - Sophie Gautier
- INSERM U1171, pharmacovigilance - addictovigilance, Univ. Lille, Lille, France
| | - Sylvie Deheul
- INSERM U1171, pharmacovigilance - addictovigilance, Univ. Lille, Lille, France
| | - Nicolas Simioni
- Psychiatry and Addiction Medicine Department, CHU Lille, Lille, France
| | - Olivier Cottencin
- Psychiatry and Addiction Medicine Department, CHU Lille, Lille, France.,CNRS, UMR 9193, SCALab - PsyCHIC Team, Univ. Lille, Lille, France
| | - Régis Bordet
- INSERM U1171, pharmacovigilance - addictovigilance, Univ. Lille, Lille, France
| | - Alain Duhamel
- Department of Biostatistics, Univ. Lille, CHU Lille, EA 2694 - Santé publique : épidémiologie et qualité des soins, Lille, France.,CERIM, Univ. Lille, Lille, France
| | - Benjamin Rolland
- Psychiatry and Addiction Medicine Department, CHU Lille, Lille, France.,INSERM U1171, pharmacovigilance - addictovigilance, Univ. Lille, Lille, France
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Lesscher HMB, Bailey A, Vanderschuren LJMJ. Genetic Variability in Adenosine Deaminase-Like Contributes to Variation in Alcohol Preference in Mice. Alcohol Clin Exp Res 2017; 41:1271-1279. [PMID: 28449374 DOI: 10.1111/acer.13409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/20/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND A substantial part of the risk for alcohol use disorder is determined by genetic factors. We previously used chromosome substitution (CSS) mice, to identify a quantitative trait loci (QTL) for alcohol preference on mouse chromosome 2. The aim of this study was to identify candidate genes within this QTL that confer the risk for alcohol preference. METHODS In order to delineate the neurobiological underpinnings of alcohol consumption, we expanded on the QTL approach to identify candidate genes for high alcohol preference in mice. We narrowed down a QTL for alcohol preference on mouse chromosome 2, that we previously identified using CSS mice, to 4 candidate genes in silico. Expression levels of these candidate genes in prefrontal cortex, amygdala, and nucleus accumbens-brain regions implicated in reward and addiction-were subsequently compared for the CSS-2 and the C57BL/6J host strain. RESULTS We observed increased expression of adenosine deaminase-like (Adal) in all 3 regions in CSS-2 mice. Moreover, we found that the adenosine deaminase inhibitor EHNA reduced the difference in alcohol preference between CSS-2 and C57BL/6J mice. CONCLUSIONS This study identifies Adal as a genetically protective factor against alcohol consumption in mice, in which elevated Adal levels contribute to low alcohol preference.
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Affiliation(s)
- Heidi M B Lesscher
- Division of Behavioural Neuroscience , Department of Animals in Science and Society, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Alexis Bailey
- Institute of Medical and Biomedical Education , St George's University of London, London, UK
| | - Louk J M J Vanderschuren
- Division of Behavioural Neuroscience , Department of Animals in Science and Society, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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Richardson BD, Rossi DJ. Recreational concentrations of alcohol enhance synaptic inhibition of cerebellar unipolar brush cells via pre- and postsynaptic mechanisms. J Neurophysiol 2017; 118:267-279. [PMID: 28381493 DOI: 10.1152/jn.00963.2016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/17/2017] [Accepted: 04/03/2017] [Indexed: 01/18/2023] Open
Abstract
Variation in cerebellar sensitivity to alcohol/ethanol (EtOH) is a heritable trait associated with alcohol use disorder in humans and high EtOH consumption in rodents, but the underlying mechanisms are poorly understood. A recently identified cellular substrate of cerebellar sensitivity to EtOH, the GABAergic system of cerebellar granule cells (GCs), shows divergent responses to EtOH paralleling EtOH consumption and motor impairment phenotype. Although GCs are the dominant afferent integrator in the cerebellum, such integration is shared by unipolar brush cells (UBCs) in vestibulocerebellar lobes. UBCs receive both GABAergic and glycinergic inhibition, both of which may mediate diverse neurological effects of EtOH. Therefore, the impact of recreational concentrations of EtOH (~10-50 mM) on GABAA receptor (GABAAR)- and glycine receptor (GlyR)-mediated spontaneous inhibitory postsynaptic currents (sIPSCs) of UBCs in cerebellar slices was characterized. Sprague-Dawley rat (SDR) UBCs exhibited sIPSCs mediated by GABAARs, GlyRs, or both, and EtOH dose-dependently (10, 26, 52 mM) increased their frequency and amplitude. EtOH increased the frequency of glycinergic and GABAergic sIPSCs and selectively enhanced the amplitude of glycinergic sIPSCs. This GlyR-specific enhancement of sIPSC amplitude resulted from EtOH actions at presynaptic Golgi cells and via protein kinase C-dependent direct actions on postsynaptic GlyRs. The magnitude of EtOH-induced increases in UBC sIPSC activity varied across SDRs and two lines of mice, in parallel with their respective alcohol consumption/motor impairment phenotypes. These data indicate that Golgi cell-to-UBC inhibitory synapses are targets of EtOH, which acts at pre- and postsynaptic sites, via Golgi cell excitation and direct GlyR enhancement.NEW & NOTEWORTHY Genetic variability in cerebellar alcohol/ethanol sensitivity (ethanol-induced ataxia) predicts ethanol consumption phenotype in rodents and humans, but the cellular and molecular mechanisms underlying genetic differences are largely unknown. Here it is demonstrated that recreational concentrations of alcohol (10-30 mM) enhance glycinergic and GABAergic inhibition of unipolar brush cells through increases in glycine/GABA release and postsynaptic enhancement of glycine receptor-mediated responses. Ethanol effects varied across rodent genotypes parallel to ethanol consumption and motor sensitivity phenotype.
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Affiliation(s)
- Ben D Richardson
- Department of Integrative Physiology and Neuroscience, College of Veterinary Medicine, Washington State University, Pullman, Washington; and.,Alcohol and Drug Abuse Research Program, Washington State University, Pullman, Washington
| | - David J Rossi
- Department of Integrative Physiology and Neuroscience, College of Veterinary Medicine, Washington State University, Pullman, Washington; and .,Alcohol and Drug Abuse Research Program, Washington State University, Pullman, Washington
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