Addiction Biology最新文献

{"title":"Examining the moderating role of cannabis use on the relationship between alcohol consumption and inflammation in individuals with alcohol use disorder","authors":"Erica N. Grodin,&nbsp;Kaitlin R. McManus,&nbsp;Lara A. Ray","doi":"10.1111/adb.13431","DOIUrl":"10.1111/adb.13431","url":null,"abstract":"<p>Inflammation appears to be a critical mechanism in the development of alcohol use disorder (AUD) and a consequence of chronic alcohol use. The potential anti-inflammatory properties of cannabis may modulate the proinflammatory effects of alcohol. This study sought to extend previous work investigating the relationship between alcohol consumption, cannabis use and circulating interleukin (IL)-6 levels in a sample with AUD. One hundred and thirty-three individuals with an AUD provided blood samples to assess IL-6 and answered questions regarding alcohol and cannabis use. An ordinary least squares multiple regression analysis was conducted to assess the effect of alcohol and cannabis use on IL-6. A moderation analysis examined cannabis use as a potential moderator of the relationship between alcohol use and circulating IL-6 levels. Alcohol use was predictive of higher log IL-6 levels (standardized <i>β</i> = 0.16, <i>p</i> = 0.03), while cannabis use was not predictive of log IL-6 levels (<i>p</i> = 0.36). Days of cannabis use moderated the relationship between alcohol use and IL-6 levels, such that the relationship between alcohol use and IL-6 levels was only significant in individuals with AUD without recent cannabis use. This study extends previous work to a clinical sample with an AUD and underscores the importance of considering cannabis use in studies on alcohol use and inflammation. This study also indicates the need for in-depth analyses on cannabinoids and inflammation and the interaction between cannabinoids and alcohol use on inflammation.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kv7 channel opener retigabine reduces self-administration of cocaine but not sucrose in rats","authors":"Esteban S. Urena,&nbsp;Cody C. Diezel,&nbsp;Mauricio Serna,&nbsp;Grace Hala'ufia,&nbsp;Lisa Majuta,&nbsp;Kara R. Barber,&nbsp;Todd W. Vanderah,&nbsp;Arthur C. Riegel","doi":"10.1111/adb.13428","DOIUrl":"10.1111/adb.13428","url":null,"abstract":"<p>The increasing rates of drug misuse highlight the urgency of identifying improved therapeutics for treatment. Most drug-seeking behaviours that can be modelled in rodents utilize the repeated intravenous self-administration (SA) of drugs. Recent studies examining the mesolimbic pathway suggest that K_v7/KCNQ channels may contribute to the transition from recreational to chronic drug use. However, to date, all such studies used noncontingent, experimenter-delivered drug model systems, and the extent to which this effect generalizes to rats trained to self-administer drugs is not known. Here, we tested the ability of retigabine (ezogabine), a K_v7 channel opener, to regulate instrumental behaviour in male Sprague Dawley rats. We first validated the ability of retigabine to target experimenter-delivered cocaine in a conditioned place preference (CPP) assay and found that retigabine reduced the acquisition of place preference. Next, we trained rats for cocaine-SA under a fixed-ratio or progressive-ratio reinforcement schedule and found that retigabine pretreatment attenuated the SA of low to moderate doses of cocaine. This was not observed in parallel experiments, with rats self-administering sucrose, a natural reward. Compared with sucrose-SA, cocaine-SA was associated with reductions in the expression of the K_v7.5 subunit in the nucleus accumbens, without alterations in K_v7.2 and K_v7.3. Therefore, these studies reveal a reward-specific reduction in SA behaviour and support the notion that K_v7 is a potential therapeutic target for human psychiatric diseases with dysfunctional reward circuitry.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292668/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141861358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective alleviation of depressive and anxious symptoms and sleep disorders in benzodiazepine-dependent patients through repetitive transcranial magnetic stimulation","authors":"Jinbo Chen,&nbsp;Zixuan Chen,&nbsp;Yanli Zhang,&nbsp;Xiaohe Fan,&nbsp;Changchun Zhang,&nbsp;Jun Zhu,&nbsp;Chuanfu Song,&nbsp;Shuangli Zhang,&nbsp;Danwei Zhang,&nbsp;Lijuan Tang,&nbsp;Benhan Li,&nbsp;Weibian Yang,&nbsp;Qiang Hu","doi":"10.1111/adb.13425","DOIUrl":"10.1111/adb.13425","url":null,"abstract":"<p>Benzodiazepine (BZD) dependence poses a significant challenge in mental health, prompting the exploration of treatments like repetitive transcranial magnetic stimulation (rTMS). This research aims to assess the impact of rTMS on alleviating symptoms of BZD dependence. A randomized control trial was employed to study 40 BZD-dependent inpatients. Their symptoms were quantified using the Hamilton Anxiety Rating Scale (HAMA), Montgomery–Åsberg Depression Rating Scale (MADRS) and Pittsburgh Sleep Quality Index (PSQI). Participants were divided into a conventional treatment group (daily diazepam with gradual tapering) with supportive psychotherapy and another group receiving the same treatment supplemented with rTMS (five weekly sessions for 2 weeks). Significant improvements were observed in both groups over baseline in MADRS, HAMA and PSQI scores at the 2nd, 4th, 8th and 12th week assessments (<i>p &lt;</i> 0.05). The group receiving rTMS in addition to conventional treatment exhibited superior improvements in all measures at the 8th and 12th weeks. The addition of rTMS to conventional treatment methods for BZD dependence significantly betters the recovery in terms of depression, anxiety and sleep quality, highlighting the role of rTMS as an effective adjunct therapy.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11270051/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141761984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interrelated involvement of the endocannabinoid/endovanilloid (TRPV1) systems and epigenetic processes in anxiety- and working memory impairment-related behavioural effects of nicotine as a stressor","authors":"Tamaki Hayase","doi":"10.1111/adb.13421","DOIUrl":"10.1111/adb.13421","url":null,"abstract":"<p>The addictive use of nicotine contained in tobacco is associated with stressor-like emotional and cognitive effects such as anxiety and working memory impairment, and the involvement of epigenetic mechanisms such as histone acetylation has recently been reported. Although the precise nature of behavioural plasticity remains unclear, both anxiogenic- and working memory impairment-like effects were observed in the present experimental model of mice treated with repeated subcutaneous nicotine and/or immobilization stress, and these effects were commonly attenuated by the histone deacetylase (HDAC) inhibitors that induce histone acetylation. Such HDAC inhibitor-induced resilience was mimicked by ligands for the endocannabinoid (ECB) system, a neurotransmitter system that is closely associated with nicotine-induced addiction-related behaviours: the anxiogenic-like effects were mitigated by the cannabinoid type 1 (CB1) agonist arachidonylcyclopropylamide (ACPA), whereas the working memory impairment-like effects were mitigated by the CB1 antagonist SR 141716A. Moreover, the effects of the HDAC inhibitors were also mimicked by ligands for the endovanilloid (transient receptor potential vanilloid 1 [TRPV1]) system, a system that shares common characteristics with the ECB system: the anxiogenic-like effects were mitigated by the TRPV1 antagonist capsazepine, whereas the working memory impairment-like effects were mitigated by the TRPV1 agonist olvanil. Notably, the HDAC inhibitor-induced anxiolytic-like effects were attenuated by SR 141716A, which were further counteracted by capsazepine, whereas the working memory improvement-like effects were attenuated by capsazepine, which were further counteracted by SR 141716A. These results suggest the contribution of interrelated control of the ECB/TRPV1 systems and epigenetic processes such as histone acetylation to novel therapeutic approaches.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13421","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141499396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The ReCoDe addiction research consortium: Losing and regaining control over drug intake—Findings and future perspectives","authors":"Rainer Spanagel,&nbsp;Patrick Bach,&nbsp;Tobias Banaschewski,&nbsp;Anne Beck,&nbsp;Felix Bermpohl,&nbsp;Rick E. Bernardi,&nbsp;Christian Beste,&nbsp;Lorenz Deserno,&nbsp;Daniel Durstewitz,&nbsp;Ulrich Ebner-Priemer,&nbsp;Tanja Endrass,&nbsp;Karen D. Ersche,&nbsp;Gordon Feld,&nbsp;Martin Fungisai Gerchen,&nbsp;Björn Gerlach,&nbsp;Thomas Goschke,&nbsp;Anita Christiane Hansson,&nbsp;Christine Heim,&nbsp;Stefan Kiebel,&nbsp;Falk Kiefer,&nbsp;Peter Kirsch,&nbsp;Clemens Kirschbaum,&nbsp;Georgia Koppe,&nbsp;Bernd Lenz,&nbsp;Shuyan Liu,&nbsp;Michael Marxen,&nbsp;Marcus W. Meinhardt,&nbsp;Andreas Meyer-Lindenberg,&nbsp;Christiane Montag,&nbsp;Christian P. Müller,&nbsp;Wolfgang E. Nagel,&nbsp;Ana M. M. Oliveria,&nbsp;David Owald,&nbsp;Maximilian Pilhatsch,&nbsp;Josef Priller,&nbsp;Michael A. Rapp,&nbsp;Markus Reichert,&nbsp;Stephan Ripke,&nbsp;Kerstin Ritter,&nbsp;Nina Romanczuk-Seiferth,&nbsp;Florian Schlagenhauf,&nbsp;Emanuel Schwarz,&nbsp;Sarah Schwöbel,&nbsp;Michael N. Smolka,&nbsp;Surjo R. Soekadar,&nbsp;Wolfgang H. Sommer,&nbsp;Ann-Kathrin Stock,&nbsp;Andreas Ströhle,&nbsp;Heike Tost,&nbsp;Sabine Vollstädt-Klein,&nbsp;Henrik Walter,&nbsp;Tina Waschke,&nbsp;Stephanie H. Witt,&nbsp;Andreas Heinz,&nbsp;Other members of the ReCoDe Consortium","doi":"10.1111/adb.13419","DOIUrl":"10.1111/adb.13419","url":null,"abstract":"<p>Substance use disorders (SUDs) are seen as a continuum ranging from goal-directed and hedonic drug use to loss of control over drug intake with aversive consequences for mental and physical health and social functioning. The main goals of our interdisciplinary German collaborative research centre on <i>Losing and Regaining Control over Drug Intake</i> (ReCoDe) are (i) to study triggers (drug cues, stressors, drug priming) and modifying factors (age, gender, physical activity, cognitive functions, childhood adversity, social factors, such as loneliness and social contact/interaction) that longitudinally modulate the trajectories of losing and regaining control over drug consumption under real-life conditions. (ii) To study underlying behavioural, cognitive and neurobiological mechanisms of disease trajectories and drug-related behaviours and (iii) to provide non-invasive mechanism-based interventions. These goals are achieved by: (A) using innovative mHealth (mobile health) tools to longitudinally monitor the effects of triggers and modifying factors on drug consumption patterns in real life in a cohort of 900 patients with alcohol use disorder. This approach will be complemented by animal models of addiction with 24/7 automated behavioural monitoring across an entire disease trajectory; i.e. from a naïve state to a drug-taking state to an addiction or resilience-like state. (B) The identification and, if applicable, computational modelling of key molecular, neurobiological and psychological mechanisms (e.g., reduced cognitive flexibility) mediating the effects of such triggers and modifying factors on disease trajectories. (C) Developing and testing non-invasive interventions (e.g., Just-In-Time-Adaptive-Interventions (JITAIs), various non-invasive brain stimulations (NIBS), individualized physical activity) that specifically target the underlying mechanisms for regaining control over drug intake. Here, we will report on the most important results of the first funding period and outline our future research strategy.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13419","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Altered executive control network and default model network topology are linked to acute electronic cigarette use: A resting-state fNIRS study","authors":"Xin Huang,&nbsp;Yawei Qi,&nbsp;Ran Zhang,&nbsp;Yu Pu,&nbsp;Xi Chen,&nbsp;Shanping Chen,&nbsp;Haichao Zhao,&nbsp;Qinghua He","doi":"10.1111/adb.13423","DOIUrl":"10.1111/adb.13423","url":null,"abstract":"<p>In recent years, electronic cigarettes (e-cigs) have gained popularity as stylish, safe, and effective smoking cessation aids, leading to widespread consumer acceptance. Although previous research has explored the acute effects of combustible cigarettes or nicotine replacement therapy on brain functional activities, studies on e-cigs have been limited. Using fNIRS, we conducted graph theory analysis on the resting-state functional connectivity of 61 male abstinent smokers both before and after vaping e-cigs. And we performed Pearson correlation analysis to investigate the relationship between alterations in network metrics and changes in craving. E-cig use resulted in increased degree centrality, nodal efficiency, and local efficiency within the executive control network (ECN), while causing a decrease in these properties within the default model network (DMN). These alterations were found to be correlated with reductions in craving, indicating a relationship between differing network topologies in the ECN and DMN and decreased craving. These findings suggest that the impact of e-cig usage on network topologies observed in male smokers resembles the effects observed with traditional cigarettes and other forms of nicotine delivery, providing valuable insights into their addictive potential and effectiveness as aids for smoking cessation.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13423","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epigenetic and sex differences in opioid use disorder in chronic pain: A real-world study linked with OPRM1 DNA methylation","authors":"Laura Agulló,&nbsp;Mónica Escorial,&nbsp;Samantha Orutño,&nbsp;Javier Muriel,&nbsp;Juan Sandoval,&nbsp;César Margarit,&nbsp;Ana M. Peiró","doi":"10.1111/adb.13422","DOIUrl":"10.1111/adb.13422","url":null,"abstract":"<p>Opioid use disorder (OUD) is a multifaceted condition influenced by sex, genetic and environmental factors that could be linked with epigenetic changes. Understanding how these factors interact is crucial to understand and address the development and progression of this disorder. Our aim was to elucidate different potential epigenetic and genetic mechanisms between women and men that correlate with OUD under real-world pain unit conditions. Associations between analgesic response and the DNA methylation level of the <i>opioid mu receptor</i> (<i>OPRM1</i>) gene (CpG sites 1–5 selected in the promoter region) were evaluated in 345 long opioid-treated chronic non cancer pain: cases with OUD (<i>n</i> = 67) and controls (without OUD, <i>n</i> = 278). Cases showed younger ages, low employment status and quality of life, but higher morphine equivalent daily dose and psychotropic use, compared to the controls. The patients with OUD showed a significant decrease in <i>OPRM1</i> DNA methylation, which correlated with clinical outcomes like pain relief, depression and different adverse events. Significant differences were found at the five CpG sites studied for men, and exclusively in women for CpG site 3, in relation to OUD diagnosis. These findings support the importance of epigenetics and sex as biological variables to be considered toward efficient OUD understanding and therapy development.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global, interhemispheric and intrahemispheric functional connection patterns in male adults with alcohol use disorder","authors":"Yarui Wei,&nbsp;Weijian Wang,&nbsp;Yimeng Kang,&nbsp;Xiaoyu Niu,&nbsp;Zanxia Zhang,&nbsp;Shujian Li,&nbsp;Shaoqiang Han,&nbsp;Jingliang Cheng,&nbsp;Yong Zhang","doi":"10.1111/adb.13398","DOIUrl":"10.1111/adb.13398","url":null,"abstract":"<p>A growing body of evidence indicates the existence of abnormal local and long-range functional connection patterns in patients with alcohol use disorder (AUD). However, it has yet to be established whether AUD is associated with abnormal interhemispheric and intrahemispheric functional connection patterns. In the present study, we analysed resting-state functional magnetic resonance imaging data from 55 individuals with AUD and 32 healthy nonalcohol users. For each subject, whole-brain functional connectivity density (FCD) was decomposed into ipsilateral and contralateral parts. Correlation analysis was performed between abnormal FCD and a range of clinical measurements in the AUD group. Compared with healthy controls, the AUD group exhibited a reduced global FCD in the anterior and middle cingulate gyri, prefrontal cortex and thalamus, along with an enhanced global FCD in the temporal, parietal and occipital cortices. Abnormal interhemispheric and intrahemispheric FCD patterns were also detected in the AUD group. Furthermore, abnormal global, contralateral and ipsilateral FCD data were correlated with the mean amount of pure alcohol and the severity of alcohol addiction in the AUD group. Collectively, our findings indicate that global, interhemispheric and intrahemispheric FCD may represent a robust method to detect abnormal functional connection patterns in AUD; this may help us to identify the neural substrates and therapeutic targets of AUD.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13398","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlation of striatal dopamine D2/3 receptor availability with GABA level in the anterior cingulate cortex in healthy controls but not in alcohol-dependent subjects and individuals at high risk: A multimodal magnetic resonance spectroscopy and positron emission tomography study","authors":"Gianna Spitta,&nbsp;Tobias Gleich,&nbsp;Annika Rosenthal,&nbsp;Florian Schubert,&nbsp;Semiha Aydin,&nbsp;Andreas Heinz,&nbsp;Ralph Buchert,&nbsp;Jürgen Gallinat","doi":"10.1111/adb.13424","DOIUrl":"10.1111/adb.13424","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>The association of impaired dopaminergic neurotransmission with the development and maintenance of alcohol use disorder is well known. More specifically, reduced dopamine D2/3 receptors in the striatum of subjects with alcohol dependence (AD) compared to healthy controls have been found in previous studies. Furthermore, alterations of gamma-aminobutyric acid (GABA) and glutamate (Glu) levels in the anterior cingulate cortex (ACC) of AD subjects have been documented in several studies. However, the interaction between cortical Glu levels and striatal dopamine D2/3 receptors has not been investigated in AD thus far.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study investigated dopamine D2/3 receptor availability via 18F-fallypride positron emission tomography (PET) and GABA as well as Glu levels via magnetic resonance spectroscopy (MRS) in 19 detoxified AD subjects, 18 healthy controls (low risk, LR) controls and 19 individuals at high risk (HR) for developing AD, carefully matched for sex, age and smoking status.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We found a significant negative correlation between GABA levels in the ACC and dopamine D2/3 receptor availability in the associative striatum of LR but not in AD or HR individuals. Contrary to our expectations, we did not observe a correlation between Glu concentrations in the ACC and striatal D2/3 receptor availability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The results may reflect potential regulatory cortical mechanisms on mesolimbic dopamine receptors and their disruption in AD and individuals at high risk, mirroring complex neurotransmitter interactions associated with the pathogenesis of addiction. This is the first study combining 18F-fallypride PET and MRS in AD subjects and individuals at high risk.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13424","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Social setting interacts with hyper dopamine to boost the stimulant effect of ethanol","authors":"Dilean J. Murillo Gonzalez,&nbsp;Bryan A. Hernandez Granados,&nbsp;Paul Rafael Sabandal,&nbsp;Kyung-An Han","doi":"10.1111/adb.13420","DOIUrl":"10.1111/adb.13420","url":null,"abstract":"<p>Alcohol consumption occurring in a social or solitary setting often yields different behavioural responses in human subjects. For example, social drinking is associated with positive effects while solitary drinking is linked to negative effects. However, the neurobiological mechanism by which the social environment during alcohol intake impacts on behavioural responses remains poorly understood. We investigated whether distinct social environments affect behavioural responses to ethanol and the role of the dopamine system in this phenomenon in the fruit fly <i>Drosophila melanogaster</i>. The wild-type <i>Canton-S</i> (<i>CS</i>) flies showed higher locomotor response when exposed to ethanol in a group setting than a solitary setting, and there was no difference in females and males. Dopamine signalling is crucial for the locomotor stimulating effect of ethanol. When subjected to ethanol exposure alone, the dopamine transport mutant flies <i>fumin</i> (<i>fmn</i>) with hyper dopamine displayed the locomotor response similar to <i>CS</i>. When subjected to ethanol in a group setting, however, the <i>fmn</i>'s response to the locomotor stimulating effect was substantially augmented compared with <i>CS</i>, indicating synergistic interaction of dopamine signalling and social setting. To identify the dopamine signalling pathway important for the social effect, we examined the flies defective in individual dopamine receptors and found that the D1 receptor dDA1/Dop1R1 is the major receptor mediating the social effect. Taken together, this study underscores the influence of social context on the neural and behavioural responses to ethanol.</p>","PeriodicalId":7289,"journal":{"name":"Addiction Biology","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adb.13420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}