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Delage C, Morel A, de Witt P, Jauffret-Roustide M, Bloch V, Noble F, Vorspan F, Marie N. Behavioral sensitization to psychostimulants and opioids: What is known in rodents and what still needs to be explored in humans? Prog Neuropsychopharmacol Biol Psychiatry 2023; 127:110824. [PMID: 37479108 DOI: 10.1016/j.pnpbp.2023.110824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 06/28/2023] [Accepted: 07/07/2023] [Indexed: 07/23/2023]
Abstract
Repeated exposure to substances of abuse results in an increase in some behavioral responses. This phenomenon, called behavioral sensitization (BS), is well described in preclinical models. However, its existence in humans is still a matter of debate. After a review of preclinical evidence of BS and its mechanisms in animal models, we reviewed the evidence supporting the existence of BS in humans, despite the limited research available in this regard. We focused our review on opioids and psychostimulants, since they share the ability to promote addictive behaviors. Further, they induce BS despite their distinct sedative and stimulant properties. Moreover, we proposed future research perspectives in this review to address the remaining unsolved questions, especially regarding BS in humans using a harm reduction approach.
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Affiliation(s)
- Clément Delage
- Université Paris Cité, Inserm, UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France; Service Pharmacie, AP-HP, Hôpital Lariboisière-Fernand Widal, F-75010 Paris, France
| | - Alix Morel
- Département de Psychiatrie et de Médecine Addictologique, AP-HP, Hôpital Lariboisière-Fernand Widal, F-75010 Paris, France
| | - Pauline de Witt
- Département de Psychiatrie et de Médecine Addictologique, AP-HP, Hôpital Lariboisière-Fernand Widal, F-75010 Paris, France
| | - Marie Jauffret-Roustide
- École des hautes études en sciences sociales, Inserm U 1276, CNRS UMR 8044, Centre d'étude des mouvements sociaux, Paris, France
| | - Vanessa Bloch
- Université Paris Cité, Inserm, UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France; Service Pharmacie, AP-HP, Hôpital Lariboisière-Fernand Widal, F-75010 Paris, France
| | - Florence Noble
- Université Paris Cité, Inserm UMR-S1124, CNRS EMR 3649, "Pharmacologie et thérapies des addictions", Paris, France
| | - Florence Vorspan
- Université Paris Cité, Inserm, UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France; Département de Psychiatrie et de Médecine Addictologique, AP-HP, Hôpital Lariboisière-Fernand Widal, F-75010 Paris, France
| | - Nicolas Marie
- Université Paris Cité, Inserm UMR-S1124, CNRS EMR 3649, "Pharmacologie et thérapies des addictions", Paris, France.
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Fritz M, Soravia SM, Dudeck M, Malli L, Fakhoury M. Neurobiology of Aggression-Review of Recent Findings and Relationship with Alcohol and Trauma. BIOLOGY 2023; 12:biology12030469. [PMID: 36979161 PMCID: PMC10044835 DOI: 10.3390/biology12030469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
Aggression can be conceptualized as any behavior, physical or verbal, that involves attacking another person or animal with the intent of causing harm, pain or injury. Because of its high prevalence worldwide, aggression has remained a central clinical and public safety issue. Aggression can be caused by several risk factors, including biological and psychological, such as genetics and mental health disorders, and socioeconomic such as education, employment, financial status, and neighborhood. Research over the past few decades has also proposed a link between alcohol consumption and aggressive behaviors. Alcohol consumption can escalate aggressive behavior in humans, often leading to domestic violence or serious crimes. Converging lines of evidence have also shown that trauma and posttraumatic stress disorder (PTSD) could have a tremendous impact on behavior associated with both alcohol use problems and violence. However, although the link between trauma, alcohol, and aggression is well documented, the underlying neurobiological mechanisms and their impact on behavior have not been properly discussed. This article provides an overview of recent advances in understanding the translational neurobiological basis of aggression and its intricate links to alcoholism and trauma, focusing on behavior. It does so by shedding light from several perspectives, including in vivo imaging, genes, receptors, and neurotransmitters and their influence on human and animal behavior.
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Affiliation(s)
- Michael Fritz
- School of Health and Social Sciences, AKAD University of Applied Sciences, 70191 Stuttgart, Germany
- Department of Forensic Psychiatry and Psychotherapy, Ulm University, BKH Günzburg, Lindenallee 2, 89312 Günzburg, Germany
| | - Sarah-Maria Soravia
- Department of Forensic Psychiatry and Psychotherapy, Ulm University, BKH Günzburg, Lindenallee 2, 89312 Günzburg, Germany
| | - Manuela Dudeck
- Department of Forensic Psychiatry and Psychotherapy, Ulm University, BKH Günzburg, Lindenallee 2, 89312 Günzburg, Germany
| | - Layal Malli
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon
| | - Marc Fakhoury
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut P.O. Box 13-5053, Lebanon
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3
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Wilson A, Periandri EM, Sievers M, Petruccelli E. Drosophila Stat92E Signaling Following Pre-exposure to Ethanol. Neurosci Insights 2023; 18:26331055221146755. [PMID: 36643884 PMCID: PMC9834942 DOI: 10.1177/26331055221146755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 12/06/2022] [Indexed: 01/11/2023] Open
Abstract
Repeated exposure to alcohol alters neuromolecular signaling that influences acute and long-lasting behaviors underlying Alcohol Use Disorder (AUD). Recent animal model research has implicated changes in the conserved JAK/STAT pathway, a signaling pathway classically associated with development and the innate immune system. How ethanol exposure impacts STAT signaling within neural cells is currently unclear. Here, we investigated the role of Drosophila Stat92E in ethanol-induced locomotion, signaling activity, and downstream transcriptional responses. Findings suggest that expressing Stat92E-RNAi causes enhanced ethanol-induced hyperactivity in flies previously exposed to ethanol. Furthermore, alternative splicing of Stat92E itself was detected after repeated ethanol exposure, although no changes were found in downstream transcriptional activity. This work adds to our growing understanding of altered neuromolecular signaling following ethanol exposure and suggests that STAT signaling may be a relevant target to consider for AUD treatment.
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Affiliation(s)
| | | | | | - Emily Petruccelli
- Emily Petruccelli, Southern Illinois University Edwardsville College of Arts and Sciences, 44 Circle Dr, Edwardsville, IL 62026, USA.
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4
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Cofresí RU, Kohen CB, Motschman CA, Wiers RW, Piasecki TM, Bartholow BD. Behavioral response bias and event-related brain potentials implicate elevated incentive salience attribution to alcohol cues in emerging adults with lower sensitivity to alcohol. Addiction 2022; 117:892-904. [PMID: 34697852 PMCID: PMC8904297 DOI: 10.1111/add.15728] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 10/04/2021] [Indexed: 12/15/2022]
Abstract
AIMS This study used a behavioral approach-avoidance task including images of alcoholic beverages to test whether low sensitivity to alcohol (LS) is a phenotypical marker of a dispositional propensity to attribute bottom-up incentive value to naturally conditioned alcohol cues. DESIGN, SETTING AND PARTICIPANTS Experimental study with a measured individual difference variable at a university psychology laboratory in Missouri, MO, USA. Participants were 178 emerging adults (aged 18-20 years) varying in self-reported sensitivity to alcohol's acute effects. MEASUREMENTS Participants completed the alcohol approach-avoidance task while behavior (response time; RT) and the electroencephalogram (EEG) were recorded. Stimulus-locked event-related potentials (ERPs) provided indices of integrated (top-down and bottom-up) stimulus incentive value (P3 amplitude) and conflict between top-down task demands and bottom-up response propensities (N450 amplitude). FINDINGS Linear mixed models showed faster RT for 'alcohol-approach' relative to 'alcohol-avoid' trials for lower-sensitivity (LS) [meanD ± standard errorD (MD ± SED ) = 29.51 ± 9.74 ms, t(328) = 3.03, P = 0.003] but not higher-sensitivity (HS) individuals (MD ± SED = 2.27 ± 9.33 ms, t(328) = 0.243, P = 0.808). There was enhanced N450 amplitude (response conflict) for alcohol-avoid relative to alcohol-approach trials for LS participants (MD ± SED = 0.811 ± 0.198 μV, Z = 4.108, P < 0.001) and enhanced N450 amplitude for alcohol-approach relative to alcohol-avoid for HS participants (MD ± SED = 0.419 ± 0.188 μV, Z = 2.235, P = 0.025). There was also enhanced P3 amplitude for alcohol-approach relative to alcohol-avoid for LS (MD ± SED = 0.825 ± 0.204 μV, Z = 4.045, P < 0.001) but not HS (MD ± SED = 0.013 ± 0.194 μV, Z = 0.068, P = 0.946). CONCLUSIONS Findings from a human laboratory study appear to support the notion that low sensitivity to alcohol indexes a propensity to attribute bottom-up incentive value to naturally conditioned alcohol cues.
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Affiliation(s)
- Roberto U. Cofresí
- Department of Psychological Sciences, University of Missouri,Corresponding author: Roberto Cofresí, University of Missouri, Department of Psychological Sciences, Columbia, MO, 65211. Phone: 469-323-0181
| | - Casey B. Kohen
- Department of Psychological Sciences, University of Missouri
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5
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Li HC, Zhang JM, Xu R, Wang YH, Xu W, Chen R, Wan XM, Zhang HL, Wang L, Wang XJ, Jiang LH, Liu B, Zhao Y, Chen YY, Dai YP, Li M, Zhang HQ, Yang Z, Bai L, Zhang J, Wang HB, Tian JW, Zhao YL, Cen XB. mTOR regulates cocaine-induced behavioural sensitization through the SynDIG1-GluA2 interaction in the nucleus accumbens. Acta Pharmacol Sin 2022; 43:295-306. [PMID: 34522005 PMCID: PMC8792044 DOI: 10.1038/s41401-021-00760-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 08/08/2021] [Indexed: 02/05/2023] Open
Abstract
Behavioral sensitization is a progressive increase in locomotor or stereotypic behaviours in response to drugs. It is believed to contribute to the reinforcing properties of drugs and to play an important role in relapse after cessation of drug abuse. However, the mechanism underlying this behaviour remains poorly understood. In this study, we showed that mTOR signaling was activated during the expression of behavioral sensitization to cocaine and that intraperitoneal or intra-nucleus accumbens (NAc) treatment with rapamycin, a specific mTOR inhibitor, attenuated cocaine-induced behavioural sensitization. Cocaine significantly modified brain lipid profiles in the NAc of cocaine-sensitized mice and markedly elevated the levels of phosphatidylinositol-4-monophosphates (PIPs), including PIP, PIP2, and PIP3. The behavioural effect of cocaine was attenuated by intra-NAc administration of LY294002, an AKT-specific inhibitor, suggesting that PIPs may contribute to mTOR activation in response to cocaine. An RNA-sequencing analysis of the downstream effectors of mTOR signalling revealed that cocaine significantly decreased the expression of SynDIG1, a known substrate of mTOR signalling, and decreased the surface expression of GluA2. In contrast, AAV-mediated SynDIG1 overexpression in NAc attenuated intracellular GluA2 internalization by promoting the SynDIG1-GluA2 interaction, thus maintaining GluA2 surface expression and repressing cocaine-induced behaviours. In conclusion, NAc SynDIG1 may play a negative regulatory role in cocaine-induced behavioural sensitization by regulating synaptic surface expression of GluA2.
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Affiliation(s)
- Hong-chun Li
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jia-mei Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Rui Xu
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yong-hai Wang
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Wei Xu
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Rong Chen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xue-mei Wan
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hao-luo Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Liang Wang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xiao-jie Wang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Lin-hong Jiang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Bin Liu
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Ying Zhao
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yuan-yuan Chen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yan-ping Dai
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Min Li
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hua-qin Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Zhen Yang
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Lin Bai
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jie Zhang
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hong-bo Wang
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Jing-wei Tian
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Ying-lan Zhao
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xiao-bo Cen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
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Siska F, Amchova P, Kuruczova D, Tizabi Y, Ruda-Kucerova J. Effects of low-dose alcohol exposure in adolescence on subsequent alcohol drinking in adulthood in a rat model of depression. World J Biol Psychiatry 2021; 22:757-769. [PMID: 33821763 DOI: 10.1080/15622975.2021.1907717] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Adolescence drinking and subsequent development of alcohol use disorder (AUD) is a worldwide health concern. In particular, mood dysregulation or early alcohol exposure can be the cause of heavy drinking in some individuals or a consequence of heavy drinking in others. METHODS This study investigated the effects of voluntary alcohol intake during adolescence, i.e. continuous 10% alcohol access between postnatal days (PND) 29 to 43 and olfactory bulbectomy (OBX) model of depression (performed on PND 59) on alcohol drinking in Wistar rats during adulthood (PND 80-120, intermittent 20% alcohol access). In addition, the effect of NBQX, an AMPA/kainate receptor antagonist (5 mg/kg, IP) on spontaneous alcohol consumption was examined. RESULTS Rats exposed to 10% alcohol during adolescence exhibited a lower 20% alcohol intake in the intermittent paradigm during adulthood, while the OBX-induced phenotype did not exert a significant effect on the drinking behaviour. NBQX exerted a transient reduction on alcohol intake in the OBX rats. CONCLUSIONS Our results indicate that exposure to alcohol during adolescence can affect alcohol drinking in adulthood and that further exploration of AMPA and/or kainate receptor antagonists in co-morbid alcoholism-depression is warranted.
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Affiliation(s)
- Filip Siska
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petra Amchova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Daniela Kuruczova
- Department of Mathematics and Statistics, Faculty of Science, Masaryk University, Brno, Czech Republic.,Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Yousef Tizabi
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, USA
| | - Jana Ruda-Kucerova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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7
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Wukitsch TJ, Moser TJ, Brase EC, Kiefer SW, Cain ME. Adolescent ethanol exposure and differential rearing environment affect taste reactivity to ethanol in rats. Alcohol 2020; 89:113-122. [PMID: 32937167 DOI: 10.1016/j.alcohol.2020.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 09/02/2020] [Accepted: 09/08/2020] [Indexed: 12/20/2022]
Abstract
The identification and characterization of variables that influence "liking" and enhance vulnerability to repeated alcohol use are vital to understanding and treating alcohol use disorders. In the current study, we explore the influence of rearing environment and experimenter-administered adolescent ethanol on the hedonic value of ethanol, sucrose, and quinine. Male and female rats were reared for 30 days starting at postnatal day (PND) 21 in either an enriched, isolated, or standard condition and received 1.5 g/kg (intraperitoneally [i.p.]) 20% (w/v) ethanol or saline every other day for 12 days starting at PND 28. Thereafter, all rats had indwelling intraoral fistulae implanted and their taste reactivities to water, ethanol (5, 10, 20, 30, 40% v/v), sucrose (0.1, 0.25, 0.5 M), and quinine (0.1, 0.5 mM) were recorded and analyzed. Results indicated that enrichment elevated hedonic responding to sucrose compared to isolation, and induced a stronger negative relationship between hedonic responding and ethanol concentration compared to standard conditions. Enrichment also elevated aversive responding to ethanol and quinine compared to both isolated and standard condition rats. Adolescent ethanol injections marginally reduced aversive responding to quinine. These results replicate previous findings that environmental enrichment enhances both "liking" and aversion. In addition, the current findings suggest that, while adolescent ethanol injections may blunt aversive responses to quinine, they have no effect on aversive or hedonic responding to ethanol or sucrose. Together with existing literature, our results may suggest that experience with the taste of ethanol is necessary for alterations to ethanol "liking" and aversion.
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8
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González‐Marín MDC, Coune F, Naassila M. Vulnerability to ethanol sensitization predicts higher intake and motivation to self-administer ethanol: Proof of the incentive salience sensitization theory? Addict Biol 2020; 25:e12833. [PMID: 31762127 DOI: 10.1111/adb.12833] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/16/2019] [Accepted: 09/09/2019] [Indexed: 12/28/2022]
Abstract
Ethanol-induced behavioral sensitization (EIBS) is thought to play a key role in addiction. However, whether EIBS is linked to an increase in the motivation to self-administerethanol in an operant paradigm has never been demonstrated, and thus, the motivational sensitization theory (increase in drug wanting) has not been yet confirmed. We investigated using the operant ethanol self-administrationparadigm if the motivation to self-administerethanol (breakpoint) is increased in female mice prone to develop EIBS. Outbred female Swiss mice were treated once a day with 2.5-g ethanol per kilogram during 10 days and challenged with the same dose of ethanol 7 days later. EIBS-pronegroup was characterized by a significant increase in locomotion between the challenge day and day 1. When the difference was not significant, mice were considered as the "EIBS-resistant"group. Mice were then trained to nose poke for a 20% ethanol solution reinforcer under a FR1 and then a FR-2schedule of reinforcement. Motivation was assessed more directly with a progressive ratio schedule. Our results show that there is a positive correlation between EIBS and both the level of intake and motivation. Interestingly, acquisition of ethanol self-administrationwas faster in sensitized mice that also display a quick and long-lastingincrease in ethanol intake together with a lack of effect of alcohol challenge on c-Fosexpression restricted to the dorsolateral striatum. These results further support that EIBS vulnerability is crucial in the development of addictive behaviors and suggest a potential link with habit learning processes.
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Affiliation(s)
| | - Fabien Coune
- INSERM UMR 1247—Research Group on Alcohol and Pharmacodependences (GRAP) Université de Picardie Jules Verne Amiens France
| | - Mickaël Naassila
- INSERM UMR 1247—Research Group on Alcohol and Pharmacodependences (GRAP) Université de Picardie Jules Verne Amiens France
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9
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Cofresí RU, Bartholow BD, Piasecki TM. Evidence for incentive salience sensitization as a pathway to alcohol use disorder. Neurosci Biobehav Rev 2019; 107:897-926. [PMID: 31672617 PMCID: PMC6878895 DOI: 10.1016/j.neubiorev.2019.10.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 12/12/2022]
Abstract
The incentive salience sensitization (ISS) theory of addiction holds that addictive behavior stems from the ability of drugs to progressively sensitize the brain circuitry that mediates attribution of incentive salience (IS) to reward-predictive cues and its behavioral manifestations. In this article, we establish the plausibility of ISS as an etiological pathway to alcohol use disorder (AUD). We provide a comprehensive and critical review of evidence for: (1) the ability of alcohol to sensitize the brain circuitry of IS attribution and expression; and (2) attribution of IS to alcohol-predictive cues and its sensitization in humans and non-human animals. We point out gaps in the literature and how these might be addressed. We also highlight how individuals with different alcohol subjective response phenotypes may differ in susceptibility to ISS as a pathway to AUD. Finally, we discuss important implications of this neuropsychological mechanism in AUD for psychological and pharmacological interventions attempting to attenuate alcohol craving and cue reactivity.
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Affiliation(s)
- Roberto U Cofresí
- University of Missouri, Department of Psychological Sciences, Columbia, MO 65211, United States.
| | - Bruce D Bartholow
- University of Missouri, Department of Psychological Sciences, Columbia, MO 65211, United States
| | - Thomas M Piasecki
- University of Missouri, Department of Psychological Sciences, Columbia, MO 65211, United States
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10
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Abstract
The orthosteric γ-aminobutyric acidB (GABAB) receptor agonist baclofen is currently considered a therapeutic option for alcohol use disorder (AUD); however, the safety profile of baclofen is a concern, thus arousing interest in the positive allosteric modulators (PAMs) of the GABAB receptor (GABAB PAMs), a new class of ligands expected to possess a better safety profile. The present paper summarizes the several lines of experimental evidence indicating the ability of GABAB PAMs to inhibit multiple alcohol-motivated behaviors in rodents. All GABAB PAMs tested to date have invariably been reported to reduce, or even suppress, excessive alcohol drinking, relapse- and binge-like drinking, operant oral alcohol self-administration, reinstatement of alcohol seeking, and alcohol-induced locomotor stimulation and conditioned place preference in rats and mice. The use of validated animal models of several aspects of AUD confers translational value to these findings. The reducing effects of GABAB PAMs on alcohol-motivated behaviors (1) occurred at doses largely lower than those inducing sedation, suggesting that GABAB PAMs may possess, if compared with baclofen, a higher therapeutic index and a more favorable safety profile, and (2) were often not associated with reductions on other non-drug consummatory behaviors. Additional findings with therapeutic potential were (1) the lack of tolerance, after repeated treatment, to the reducing effect of GABAB PAMs on alcohol drinking and self-administration; (2) the efficacy of GABAB PAMs after intragastric administration; and (3) the ability of GABAB PAMs to selectively potentiate the suppressing effect of baclofen on alcohol self-administration. The recent transition of the first GABAB PAMs to the initial steps of clinical testing makes investigation of the efficacy of GABAB PAMs in AUD patients a feasible option.
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