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Pretreatment measures of brain structure and reward-processing brain function in cannabis dependence: an exploratory study of relationships with abstinence during behavioral treatment.

ABSTRACT: Cannabis is widely abused, and efficacies of therapeutics for cannabis dependence remain suboptimal. Magnetic resonance imaging (MRI) may aid in the identification of biological markers for successful treatment outcomes (i.e., abstinence).Twenty men with cannabis dependence and twenty non-substance-using healthy comparison (HC) men underwent MRI scanning. Cannabis-dependent individuals then participated in a 12-week randomized clinical trial of behavioral treatments (contingency management (CM), cognitive behavioral therapy (CBT) or both). Pretreatment functional and structural data were compared between the cannabis-dependent and HC participants. In addition, individuals with cannabis dependence were subdivided based on the successful achievement of 21 days of consecutive abstinence during treatment to assess whether abstinent versus non-abstinent cannabis-dependent participants displayed different pretreatment functional and structural characteristics when compared to HC participants.In comparison to HC participants, cannabis-dependent participants demonstrated greater ventral striatal activation during the receipt of losing outcomes and smaller putamenal volumes. Cannabis-dependent participants who did not subsequently achieve 21 days of consecutive abstinence had increased activity within the striatum during the receipt of losing outcomes, relative to HC participants. Cannabis-dependent participants who did not achieve 21 days of abstinence had decreased bilateral putamen volumes prior to treatment, relative to HC participants.Individual differences in pretreatment striatal function and structure may relate to individual differences in treatment responses for cannabis dependence. While mechanisms underlying these associations require further exploration, the striatum might mediate treatment responses via its role in associative reward-learning (e.g., through skills training in CBT or reinforcement of abstinence in CM).

SUBMITTER: Yip SW

PROVIDER: S-EPMC4057888 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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Pretreatment measures of brain structure and reward-processing brain function in cannabis dependence: an exploratory study of relationships with abstinence during behavioral treatment.

Yip Sarah W SW DeVito Elise E EE Kober Hedy H Worhunsky Patrick D PD Carroll Kathleen M KM Potenza Marc N MN

Drug and alcohol dependence 20140413

<h4>Background</h4>Cannabis is widely abused, and efficacies of therapeutics for cannabis dependence remain suboptimal. Magnetic resonance imaging (MRI) may aid in the identification of biological markers for successful treatment outcomes (i.e., abstinence).<h4>Methods</h4>Twenty men with cannabis dependence and twenty non-substance-using healthy comparison (HC) men underwent MRI scanning. Cannabis-dependent individuals then participated in a 12-week randomized clinical trial of behavioral treat ...[more]

PMID: 24793365

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Project description:IntroductionPsychological, physiological and social factors play an important role in the initiation, persistence, dependence and relapse of smoking behaviors, and coping style and smoking abstinence self-efficacy can all affect nicotine dependence.MethodsA cross-sectional sample of 568 quitters from 19 communities in Beijing in 2019 was surveyed. Demographic information and psychological characteristics of smokers were collected by an interview questionnaire, and psychological traits scales including the Smoking Abstinence Self-Efficacy (SASE) and the Trait Coping Style Questionnaire (TCSQ). We compared differences in psychological traits across demographic information and explored the relationship between nicotine dependence and coping styles and self-efficacy in refusing to smoke.ResultsSignificant differences were identified in self-efficacy in refusing to smoke and across dimensions among quitters by gender, job type, education level, and monthly income level (all p<0.05). Males had lower self-efficacy in the habitual/addictive context than females; retirees had better overall self-efficacy and self-efficacy in the negative/emotional context than business service workers and professionals; and high-educated, high-income quitters had lower self-efficacy in the negative/emotional context. There are significant differences in positive coping styles among quitters of different ages, levels of education, and types of work (all p<0.05). The results further showed that the underage population, highly educated population, and practitioners other than those in retirement, are less likely to use positive coping styles. Interventional effects analysis showed that a higher sense of self-efficacy in addictive contexts can counteract some of the negative coping styles that induce smoking.ConclusionsSelf-efficacy played an indirect mediating role between negative coping style and nicotine dependence; individuals who used more negative coping styles were more likely to engage in smoking and therefore were more nicotine dependent. Hence, it is necessary to reduce the use of negative coping strategies and improve the self-efficacy of smoking abstinence in the face of addiction.

Dataset Information

Pretreatment measures of brain structure and reward-processing brain function in cannabis dependence: an exploratory study of relationships with abstinence during behavioral treatment.

Publications

Pretreatment measures of brain structure and reward-processing brain function in cannabis dependence: an exploratory study of relationships with abstinence during behavioral treatment.

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