Emotion regulation in substance use disorders: a systematic review and meta-analysis

COT-TT vaccine attenuates cocaine-seeking and cocaine-conditioned place preference in rats

Vaccination active, promising alternative immunological strategy to treat of CUD. Various models of cocaine vaccines have been evaluated in animals and humans with relative success. In this sense, it is necessary to improve or optimize the cocaine vaccines already evaluated. Our laboratory previously reported the efficacy of the tetanus toxoid-conjugated morphine vaccine (M6-TT). The M6-TT vaccine can generate high titers of antibodies and reduce heroin-induced behavioral effects in rodents. So, it would be plausible to assume that if we modify the M6-TT vaccine by changing the hapten and maintaining the rest of the structural elements of the vaccine, we will maintain the properties of the M6-TT vaccine (high antibody titers). The objective of this study was to determine whether the antibodies generated by a tetanus toxoid-conjugated cocaine vaccine (COC-TT) can recognize and capture cocaine and decrease the cocaine-induced reinforcing effects. Male Wistar rats were immunized with the COC-TT. A solid-phase antibody-capture ELISA was used to monitor antibody titer responses after each booster dose in vaccinated animals. The study used cocaine self-administration and place-preference testing to evaluate the cocaine-reinforcing effects. The COC-TT vaccine could generate high levels of anti-cocaine antibodies. The antibodies reduced the cocaine self-administration and cocaine place preference. In addition, they decreased the cocaine-induced Fos protein expression. These findings suggest that the COC-TT vaccine generates a robust immunogenic response capable of reducing the reinforcing effects of cocaine, which supports its possible future use in clinical trials in patients with CUD.

Development and initial testing of mindful journey: a digital mindfulness-based intervention for promoting recovery from Substance use disorder

BACKGROUND/OBJECTIVES

There is a great unmet need for accessible adjunctive interventions to promote long-term recovery from substance use disorder (SUD). This study aimed to iteratively develop and test the initial feasibility and acceptability of Mindful Journey, a novel digital mindfulness-based intervention for promoting recovery among individuals with SUD.

PATIENTS/MATERIALS

Ten adults receiving outpatient treatment for SUD.

METHODS

Phase 1 (n = 5) involved developing and testing a single introductory digital lesson. Phase 2 included a separate sample (n = 5) and involved testing all 15 digital lessons (each 30- to 45-minutes) over a 6-week period, while also receiving weekly brief phone coaching for motivational/technical support.

RESULTS

Across both phases, quantitative ratings (rated on a 5-point scale) were all at or above a 4 (corresponding with 'agree') for key acceptability dimensions, such as usability, understandability, appeal of visual content, how engaging the content was, and helpfulness for recovery. Additionally, in both phases, qualitative feedback indicated that participants particularly appreciated the BOAT (Breath, Observe, Accept, Take a Moment) tool for breaking down mindfulness into steps. Qualitative feedback was used to iteratively refine the intervention. For example, based on feedback, we added a second core mindfulness tool, the SOAK (Stop, Observe, Appreciate, Keep Curious), and we added more example clients and group therapy videos. In Phase 2, 4 out of 5 participants completed all 15 lessons, providing initial evidence of feasibility. Participants reported that the phone coaching motivated them to use the app. The final version of Mindful Journey was a smartphone app with additional features, including brief on-the-go audio exercises and a library of mindfulness practices. Although, participants used these additional features infrequently.

CONCLUSIONS

Based on promising initial findings, future acceptability and feasibility testing in a larger sample is warranted. Future versions might include push notifications to facilitate engagement in the additional app features.

Emotion dysregulation in participants with substance use disorders: A metacognitive perspective

BACKGROUND

Using the metacognitive model of emotion dysregulation as a basis, this study explored whether, among participants with substance use disorders (SUDs), metacognitive beliefs and repetitive negative thinking were associated with emotion dysregulation.

METHODS

127 participants with SUDs and 127 controls without SUDs were recruited. Emotion dysregulation, metacognitive beliefs, rumination, worry, anxiety, and depression were assessed. t-tests, Mann-Whitney tests, logistic regression, correlation, and hierarchal regression analyses were run.

RESULTS

Participants with SUDs reported significantly higher levels of emotion dysregulation, positive beliefs about worry, beliefs about the need to control thoughts, rumination, and worry, compared to controls without SUDs. Among participants with SUDs negative beliefs about thoughts concerning uncontrollability and danger, cognitive confidence, beliefs about the need to control thoughts, rumination, and worry were significantly associated with an increase of emotion dysregulation.

LIMITATIONS

The cross-sectional design.

CONCLUSION

Emotion dysregulation, metacognitive beliefs, and repetitive negative thinking may contribute to increase the risk of substance use. Among participants with SUDs emotion dysregulation is associated with the tendency to endorse dysfunctional metacognitive beliefs and report repetitive negative thinking. Metacognitive beliefs and repetitive negative thinking could be a suitable therapeutic target to reduce emotion dysregulation among participants with SUDs.

Emotional Distress and Body Dissatisfaction: The Mediating Role of Social Media and Emotional Regulation

BACKGROUND

Body dissatisfaction is defined as a negative attitude towards one's body, characterized by emotional disorders. Currently, problematic use of social media seems to be associated with an increase in body dissatisfaction and emotional distress. Therefore, the present study examined the relationship between emotional distress (i.e., depression, anxiety, and stress) and body dissatisfaction, as well as the mediating role of emotional regulation and problematic social media use in this relationship. In addition, the study aims to identify sex differences in the four research variables.

METHODS

Measures of the four variables mentioned above were administered to 2520 participants over 18 (M = 48.35; SD = 16.56, 51% females).

RESULTS

The results reveal that women reported higher levels of emotional regulation, emotional distress, body dissatisfaction, and problematic use of social media. Emotional distress correlated with problematic use of social media, emotion regulation strategies (i.e., rumination and catastrophizing), and body dissatisfaction. The relationship between emotional distress and body dissatisfaction was mediated by the problematic use of social media and emotional regulation.

CONCLUSIONS

These findings underscore the relevance of educating social media users on strategies for emotional regulation. The results highlight the clinical importance of including the emotion regulation approach to a comprehensive understanding of body dissatisfaction.

Validation of the Difficulties in Emotion Regulation Scale-Short Form in a sample of Italian adolescents

OBJECTIVE

The primary objective of the present study is to validate the Difficulty in Emotion Regulation Scale-Short Form (DERS-SF) in a sample of Italian adolescents. Additionally, we aim to evaluate its factorial structure by examining the contribution of each subscale (i.e., Nonacceptance, Clarity, Awareness, Goals, Impulse, Strategy) on the general factor using bi-factor models by replicating a past study.

METHOD

The sample comprises N = 704 adolescents aged 11-17 years (M = 13.38, SD = 1.37; 53.12% females). To establish external validity, correlation and path analyses were conducted between the DERS-SF sub-scales, the total score, and measures of internalizing and externalizing symptoms, as well as Problematic Smartphone Use (PSU). Measurement invariance was tested comparing males versus females and pre-adolescents and adolescents.

RESULTS

Overall, results supported the multidimensional nature of the DERS-SF, confirming its original six-factor structure. However, bi-factor models analysis revealed that the Awareness subscale should be excluded when calculating the total score. Furthermore, findings indicated that the Strategy subscale variance is largely accounted for by the general factor rather than the specific subscale. In terms of external validity, significant positive associations between the DERS-SF sub-scales, the total score, and PSU, internalizing and externalizing symptoms were observed. Measurement invariance was supported.

CONCLUSIONS

Altogether, findings support the validity of the DERS-SF among Italian Adolescents and provide insights relevant to the understanding of the multifaceted facets of emotion regulation, emphasizing its relevance as a transdiagnostic process.

Development and validation of the Emotion Regulation Questionnaire - Positive/Negative (ERQ-PN): Does the target of emotion regulation matter?

The Emotion Regulation Questionnaire (ERQ) assesses emotion regulation strategies, particularly expressive suppression and cognitive reappraisal. However, the ERQ does not discern between regulating positive vs. negative emotions. Recent research suggests that suppression and reappraisal can impact mental health differently when targeting positive vs negative emotions. We developed and validated the Emotion Regulation Questionnaire - Positive/Negative (ERQ-PN), designed to measure positive and negative forms of suppression and reappraisal strategies. We recruited 963 participants (female = 478) through Prolific.com and administered the ERQ-PN. Participants had an average age of 45 years and were predominantly White (74%) and heterosexual (84%). Structural validity was assessed through confirmatory factor analyses. Model fit was estimated using the comparative fit index and the root-mean-square error of approximation. We also used the Bayesian information criterion to compare the fit of different models. Overall, participants used reappraisal more often to decrease negative emotions (vs. increasing positive) and leaned toward using suppression more for negative (vs. positive) emotions. These analyses revealed that the four-factor model (Model 2) delineating four latent variables (positive reappraisal, negative reappraisal, positive suppression, and negative suppression) had a good fit (RMSEA = 0.07, CFI = 0. 97, TLI = 0.96, χ 2(98) = 531.28, p < 0.001). An incremental validity assessment revealed that positive and negative reappraisal correlated similarly with related mental health constructs. By contrast, suppression of negative vs. positive emotions was differentially associated to the validators tested. The ERQ-PN represents a valid measure of emotion regulation that accounts for both positive and negative emotions.

Co-occurring compulsive sexual behaviour in an inpatient substance use population: Clinical correlates and influence on treatment outcomes

Background and Aims

Many individuals with substance use disorders (SUDs) present with co-occurring mental health disorders and other addictions, including behavioral addictions (BAs). Though several studies have investigated the relationship between SUDs and BAs, less research has focused specifically on compulsive sexual behaviour (CSB). Given that poly-addiction can hinder treatment outcomes, it is necessary to better understand the impact of co-occurring CSB and SUD. Therefore, the current study aimed to 1) determine the rate of CSB in a sample seeking treatment for SUDs, 2) identify demographic and clinical correlates of co-occurring CSB, and 3) to determine if co-occurring CSB impacts treatment outcomes for SUD.

Methods

Participants were 793 adults (71.1% men) ranging in age from 18-77 (M = 38.73) at an inpatient treatment facility for SUDs who were assessed for CSB upon admission into treatment. Participants completed a battery of questionnaires upon admission and at discharge to assess psychological and addiction symptoms.

Results

Rates of CSB were 24%. Younger age and being single were associated with greater CSB. Mental distress and addiction symptoms were higher in participants with CSB. Predictors of CSB severity included greater symptoms of traumatic stress and interpersonal dysfunction. Rates of treatment completion were similar between participants with and without CSB.

Discussion and Conclusions

These results highlight several clinical and demographic correlates of CSB amongst individuals in treatment for SUD. However, CSB was not associated with poorer treatment outcomes. Further identifying characteristics associated with CSB can help clinicians identify individuals who may be at higher risk.

Development of a self-report screening instrument for emotional dysregulation: the Reactivity, Intensity, Polarity and Stability questionnaire, screening version (RIPoSt-SV)

BACKGROUND

Emotional dysregulation (ED) refers to the inability to manage emotional experiences or expressions hindering goal-oriented behavior. Moderate impairment on at least two domains among temper control, affective lability, and emotional over-reactivity has been proposed to identify ED in adults with attention-deficit/hyperactivity disorder (ADHD). No screening measure designed for use in diverse psychiatric samples exists. We aimed to develop a self-report screening tool for ED based on the 40-item version of the Reactivity, Intensity, Polarity, and Stability questionnaire (RIPoSt-40).

METHODS

150 adult outpatients with non-psychotic conditions were enrolled between February and July 2023 at the Second Psychiatry Unit of Pisa University Hospital. Clinically significant ED (CSED) was defined based on the previously suggested approach for ADHD. Differences between patients with and without CSED were tested. To develop our screening instrument, a decision tree algorithm was trained by hyperparameter tuning through 5-fold cross-validation in 120 subjects and tested on the remaining 30.

RESULTS

75 subjects met criteria for CSED (50 %). CSED was associated with lower age and higher prevalence of psychiatric conditions, including minor mood disorders, ADHD, cannabis use disorders, and eating disorders. We identified a decision tree consisting of six items from RIPoSt-40 that effectively detected CSED, with accuracy, sensitivity, specificity, positive and negative predictive values of 80 % or higher in both the training and testing sets.

LIMITATIONS

Tertiary-level; no consensus on criteria; sample size.

CONCLUSION

The screening version of the Reactivity, Intensity, Polarity, and Stability questionnaire (RIPoSt-SV) demonstrates promise as a valuable tool for ED screening in clinical settings.

'It was like coming back from the clouds': a qualitative analysis of the lived experience of overdose consequent to drug use among a cohort of people who use drugs in Scotland

BACKGROUND

Globally, non-fatal overdose (NFOD) rates consequent to drug use, typically opioids, continue increasing at a startling rate. Existing quantitative research has revealed myriad factors and characteristics linked to experiencing NFOD, but it is critically important to explore the lived context underlying these associations. In this qualitative study, we sought to understand the experiences of NFOD among people who use drugs in a Scottish region in order to: enhance public policy responses; inform potential intervention development to mitigate risk; and contribute to the literature documenting the lived experience of NFOD.

METHODS

From June to July 2021, two peer researchers conducted face-to-face semi-structured interviews with people who use drugs who had experienced recent NFOD attending harm reduction services in Tayside, Scotland. These were transcribed verbatim and evaluated using thematic analysis with an inductive approach which had an experiential and essentialist orientation.

RESULTS

Twenty people were interviewed across two sites. Of those, 15 (75%) were male and mean age was 38.2 (7.7) years. All had experienced at least one NFOD in the prior six months, and all reported polydrug use. Five themes were identified, within which 12 subthemes were situated. The themes were: social context; personal risk-taking triggers; planned and impulsive consumption; risk perception; and overdose reversal. The results spoke to the environmental, behavioural, cognitive, economic, and marketplace, factors which influence the context of NFOD in the region.

CONCLUSIONS

A complex interplay of behavioural, psychological, and situational factors were found to impact the likelihood of experiencing NFOD. Structural inequities which policy professionals and civic leaders should seek to remedy were identified, while service providers may seek to reconfigure healthcare provision for people who use drugs to account for the interpersonal, psychological, and social factors identified, which appear to precipitate NFOD.

TRIAL REGISTRATION

Not applicable.

Clinical specificities of patients with substance use disorder and comorbid borderline personality disorder compared to patients with substance use disorder only: a retrospective study

INTRODUCTION

Substance use disorder (SUD) is a common condition often associated with borderline personality disorder (BPD), and patients with both disorders (SUD + BPD) have more complex presentations and poorer outcomes in treatment. Thus, there is a need to identify more clearly the clinical differences between patients with SUD + BPD and those with SUD only to help clinicians in their diagnostic process.

METHODS

Data from medical files of 92 patients with SUD (SUD only: n = 42; SUD + BPD: n = 50) treated in an outpatient psychiatry and addiction treatment center were extracted to compare the differences in terms of sociodemographic characteristics, substance used, psychopathological dimensions, comorbidity prevalence, and functional impairment.

RESULTS

Compared to the SUD only group, patients in the SUD + BPD group were younger, more disabled, and less satisfied with their social life. Regarding substance used, the comorbid group had more frequently cannabis use disorder and poly nonalcoholic SUD. Regarding psychopathological dimensions, the comorbid group had higher levels of impulsivity, emotion regulation difficulties and alexithymia. Finally, regarding comorbidities, the comorbid group had a higher risk of comorbid anxiety, obsessive-compulsive, and post-traumatic stress disorders.

CONCLUSION

While being only exploratory, these results add evidence on the impact of the BPD comorbidity in patients with SUD and underline important dimensions that should be considered by clinicians working with this population.

Brief emotion regulation strategies to reduce alcohol craving: Mediating role of state difficulties in emotion regulation

OBJECTIVE

This study experimentally compared the effects of emotion regulation (ER) strategies on alcohol craving and examined the mediating effect of state difficulties in emotion regulation (S-DER) on the relationship between negative/positive emotion and alcohol craving.

METHOD

417 participants (76.74% women, Mage = 20.76 years) endorsing past-month heavy/binge drinking were randomly assigned to one of four ER conditions (positive reappraisal, distancing, distraction, and acceptance). Participants completed state assessments, including negative/positive emotion, S-DER, and alcohol craving, prior to (T0) and after (T1) engaging in a negative emotion induction task. Subsequently, participants completed an ER strategy task based on their assigned ER strategy condition and completed a third state assessment (T2).

RESULTS

Time had a significant quadratic effect on alcohol craving, such that craving increased from T0 to T1 and decreased from T1 to T2. There was no significant effect of ER strategy condition on craving. Change in S-DER mediated the relationship between the change in negative/positive emotion and the change in craving, with emotional modulation and emotional acceptance facets of S-DER dominating the mediating effect during negative emotion induction and ER strategy induction, respectively.

CONCLUSIONS

Results suggest interventions targeting S-DER's emotional modulation and acceptance facets could reduce acute craving when experiencing undesired emotions.

Romantic Attachment and Intimate Partner Violence Perpetrated by Men: The Role of Affect Dysregulation and Gender Hostility

Intimate partner violence (IPV) is a major public health problem, associated with considerable consequences for the victims. Among the risk factors associated with the perpetration of male IPV, attachment insecurities (avoidance, anxiety) and affect dysregulation (AD) have received strong empirical support. A few studies showed that hostility toward women (HTW) is a correlate of IPV perpetration, but none have explored hostility toward men (HTM). This study's aim was to test direct and indirect associations between romantic attachment insecurities and IPV perpetration (psychological, physical, and sexual coercion) through AD in men seeking help, and to examine the moderator role of HTW and HTM in theses links. A sample of 1,845 men aged between 18 and 88 years and from a diverse population (e.g., cultural background, education, and sexual orientation) were recruited through 18 community organizations providing IPV services in a Canadian province. As part of the systematic assessment protocol of each organization, participants answered a series of online questionnaires. Results from a path analysis model showed indirect associations between attachment insecurities (avoidance and anxiety) and IPV perpetration (psychological, physical, and sexual coercion) through AD. Beyond these links, attachment avoidance was also directly associated with psychological violence, attachment anxiety with sexual coercion, and HTM with sexual coercion. The results revealed two moderation effects: higher HTW amplified the link between AD and physical IPV, whereas higher HTM amplified the link between AD and sexual coercion. Results highlight the relevance of assessing attachment, AD, and gender hostility in IPV programs. They also highlight the relevance of targeting HTM as a risk marker for IPV perpetration in men.

Indirect effects of emotion regulation in the relationship between pain and cannabis use in adults 18-64 years

INTRODUCTION

Individuals with chronic pain often receive prescription opioid medication, and they may use cannabis to treat pain as well, although the risks of cannabis-opioid co-use are significant. This study aimed to investigate whether two transdiagnostic factors, emotion regulation and distress tolerance, had significant indirect effects in the relationship between pain and cannabis use in adults with chronic pain and an opioid prescription.

METHODS

Participants (n = 450; mean age = 38.6 ± 11.09) were recruited using Qualtrics panel service and were 75 % female and 79 % White, non-Hispanic. Participants completed a 30-minute self-report survey capturing three-month cannabis use, the Difficulties in Emotional Regulation Scale (DERS), and the Distress Tolerance Scale (DTS). The Graded Pain Scale (GCPS) assessed pain severity/intensity and disability. Analyses used the SPSS PROCESS macro, with both single (i.e., one transdiagnostic factor) and parallel indirect effects (i.e., both the DERS and DTS) examined.

RESULTS

There were statistically significant indirect effects for both the DERS and DTS in the relationship between pain intensity or disability and three-month cannabis use in single factor models. In the parallel indirect effect model, only the DERS was statistically significant (intensity indirect effect coefficient = 0.0195 % confidence interval [95 %CI] = 0.0065, 0.390; disability indirect effect coefficient = 0.0147, 95 %CI = 0.0055, 0.0274).

CONCLUSIONS

When examining parallel indirect effects, only emotional regulation and not distress tolerance mediated the relationship between chronic pain and cannabis use among those with an opioid prescription. Clinically, interventions aimed at improving emotional regulation in individuals with chronic pain can help limit cannabis and opioid co-use.

A randomized feasibility study of a positive psychology journaling intervention to support recovery from substance-use disorders

BACKGROUND

Individuals in early recovery face significant biopsychosocial stressors causing a preponderance of negative affect. Novel interventions are needed to improve mood and well-being to support recovery. Positive Recovery Journaling (PRJ) combines elements of positive psychology, behavioral activation, and journaling to emphasize what is going right and to encourage small, positive steps that align with an individual's values to make life in recovery more rewarding and therefore more reinforcing. Our objective was to determine PRJ's feasibility, acceptability, and impact on a set of strengths-based, multidimensional aspects of recovery, including satisfaction with life, happiness with recovery, and commitment to sobriety.

METHODS

The study randomized adults in substance-use disorder treatment (N = 81) to PRJ or control. Those in PRJ were asked to practice PRJ daily and complete online surveys for four weeks; those in the control group completed online surveys for four weeks. We used multi-level modelling to determine intercept and slope for feasibility and acceptability outcomes as well as to compare differences in recovery indicators between treatment and control at baseline and Weeks 2, 4, and 8. We conducted intention-to-treat and per-protocol analyses for each recovery indicator.

RESULTS

Participants were 53 % female, and 26 % Black, Indigenous, People of Color (BIPOC) and mean age of 39 years. PRJ participants attended 71 % of groups and completed 56 % of the daily PRJ entries. Treatment and control groups rated their study tasks (PRJ for the treatment group, surveys for the control group) as equally easy; however, the PRJ group rated PRJ as significantly more satisfying, helpful, and pleasant. Treatment and control were not significantly different on any recovery indicator. In post hoc analyses, we found that for those with <90 days sobriety at baseline (51 %), PRJ had a statistically significant beneficial effect for satisfaction with life, happiness with recovery, and numerous secondary recovery indicators.

DISCUSSION

Results suggest a positive impact of PRJ on numerous recovery indices for those in earliest recovery. Integrating PRJ into support services among those with <90 days sobriety could reinforce what is going well in recovery to encourage its continued maintenance and thereby improve treatment outcomes.

Effects of exercise interventions on negative emotions, cognitive performance and drug craving in methamphetamine addiction

Introduction

Methamphetamine is currently one of the most commonly used addictive substances with strong addiction and a high relapse rate. This systematic review aims to examine the effectiveness of physical activity in improving negative emotions, cognitive impairment, and drug craving in people with methamphetamine use disorder (MUD).

Methods

A total of 17 studies out of 133 found from Embase and PubMed were identified, reporting results from 1836 participants from MUD populations. Original research using clearly described physical activity as interventions and reporting quantifiable outcomes of negative mood, cognitive function and drug craving level in people with MUD were eligible for inclusion. We included prospective studies, randomized controlled trials, or intervention studies, focusing on the neurological effects of physical activity on MUD.

Results

Taken together, the available clinical evidence showed that physical activity-based interventions may be effective in managing MUD-related withdrawal symptoms.

Discussion

Physical exercise may improve drug rehabilitation efficiency by improving negative emotions, cognitive behaviors, and drug cravings.

Systematic review registration

https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42024530359.

Neural responses to reward, threat, and emotion regulation and transition to hazardous alcohol use

AIMS

Reward processing and regulation of emotions are thought to impact the development of addictive behaviors. In this study, we aimed to determine whether neural responses during reward anticipation, threat appraisal, emotion reactivity, and cognitive reappraisal predicted the transition from low-level to hazardous alcohol use over a 12-month period.

METHODS

Seventy-eight individuals aged 18-22 with low-level alcohol use [i.e. Alcohol Use Disorder Identification Test (AUDIT) score <7] at baseline were enrolled. They completed reward-based and emotion regulation tasks during magnetic resonance imaging to examine reward anticipation, emotional reactivity, cognitive reappraisal, and threat anticipation (in the nucleus accumbens, amygdala, superior frontal gyrus, and insula, respectively). Participants completed self-report measures at 3-, 6-, 9-, and 12-month follow-up time points to determine if they transitioned to hazardous use (as defined by AUDIT scores ≥8).

RESULTS

Of the 57 participants who completed follow-up, 14 (24.6%) transitioned to hazardous alcohol use. Higher baseline AUDIT scores were associated with greater odds of transitioning to hazardous use (odds ratio = 1.73, 95% confidence interval 1.13-2.66, P = .005). Brain activation to reward, threat, and emotion regulation was not associated with alcohol use. Of the neural variables, the amygdala response to negative imagery was numerically larger in young adults who transitioned to hazardous use (g = 0.31), but this effect was not significant.

CONCLUSIONS

Baseline drinking levels were significantly associated with the transition to hazardous alcohol use. Studies with larger samples and longer follow-up should test whether the amygdala response to negative emotional imagery can be used to indicate a future transition to hazardous alcohol use.

The influence of adverse childhood experiences and depression on addiction severity among methamphetamine users: exploring the role of perseveration

Aims

This investigation aimed to clarify the intricate relationship among depression, cognitive function, adverse childhood experiences (ACEs), and their combined influence on methamphetamine use disorder (MUD).

Methods

Utilizing a battery of psychological tests, this study ascertained the impact of ACEs on the condition of 76 people with MUD who meet the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria, aged 42.17 on average. The Iowa Gambling Task (IGT), Conners' Continuous Performance-II (CPT-II), the self-report Severity of Dependence Scale (SDS), and the Beck Depression Inventory-II (BDI-II) were used for these evaluations. Individuals involved in the study were categorized into two discrete cohorts, mild (ME) and severe (SE), based on the extent of their ACEs exposure. This study employed the PROCESS regression, the independent t-test andχ2 tests for the analysis.

Results

The findings revealed notable discrepancies in the psychological consequences between the two groups with different degrees of ACEs; however, no substantial differences were observed in the demographic parameters. The SE group exhibited elevated BDI-II scores, more evident indications of MUD, and a higher degree of CPT-II cognitive perseveration. The PROCESS model revealed that cognitive perseveration moderated the impact of depression on ACEs and subjective MUD severity, explaining 20.2% of the variance. The ACEs and depression predicted 28.6% of the variance in MUD symptoms. However, no statistically significant differences were detected between the two groups regarding the parameters in the IGT-2 assessment.

Conclusions

These results indicate that the interaction between cognitive and depressive factors mediates the effect of ACEs on subjective MUD severity but not on MUD symptoms. The ACEs significant impact on mental health severity perception is explained by cognitive and depressive factors. This implies that MUD treatment and rehabilitation should address cognitive dysfunction and developmental trauma.

Longitudinal examination of borderline personality disorder symptoms and drug use: The influence of negative and positive emotion dysregulation

Borderline personality disorder (BPD) is associated with greater substance use. Emotion dysregulation has been implicated in both BPD and substance use, yet there is limited research examining the role of emotion dysregulation in the BPD-substance use relation. We examined the independent and interactive associations of BPD symptoms and emotion dysregulation in reported drug use over 1 year. Participants (N = 143) were over-recruited for BPD, assessed via interview, and completed measures of negative and positive emotion dysregulation. Drug use frequency was assessed with monthly surveys over a 1-year period. Results demonstrated interrelations among BPD symptoms and both negative and positive emotion dysregulation. However, when modeling BPD and emotion dysregulation together, only higher BPD symptoms were associated with more frequent drug use. Findings support the relation of BPD symptoms and emotion dysregulation but suggest that emotion dysregulation may not account for drug use frequency above and beyond BPD in community-recruited populations.

Neural signatures of emotion regulation

Emotional experience is central to a fulfilling life. Although exposure to negative experiences is inevitable, an individual's emotion regulation response may buffer against psychopathology. Identification of neural activation patterns associated with emotion regulation via an fMRI task is a promising and non-invasive means of furthering our understanding of the how the brain engages with negative experiences. Prior work has applied multivariate pattern analysis to identify signatures of response to negative emotion-inducing images; we adapt these techniques to establish novel neural signatures associated with conscious efforts to modulate emotional response. We model voxel-level activation via LASSO principal components regression and linear discriminant analysis to predict if a subject was engaged in emotion regulation and to identify brain regions which define this emotion regulation signature. We train our models using 82 participants and evaluate them on a holdout sample of 40 participants, demonstrating an accuracy up to 82.5% across three classes. Our results suggest that emotion regulation produces a unique signature that is differentiable from passive viewing of negative and neutral imagery.

Feasibility, Acceptability, and Potential Efficacy of a Self-Guided Internet-Delivered Dialectical Behavior Therapy Intervention for Substance Use Disorders: Randomized Controlled Trial

BACKGROUND

People with alcohol and substance use disorders (SUDs) often have underlying difficulties in regulating emotions. Although dialectical behavioral therapy is effective for SUDs, it is often difficult to access. Self-guided, internet-delivered dialectical behavioral therapy (iDBT) allows for expanded availability, but few studies have rigorously evaluated it in individuals with SUDs.

OBJECTIVE

This study examines the feasibility, acceptability, and potential efficacy of an iDBT intervention in treatment-seeking adults with SUDs. We hypothesized that iDBT would be feasible, credible, acceptable, and engaging to people with SUDs. We also hypothesized that the immediate versus delayed iDBT group would show comparatively greater improvements and that both groups would show significant improvements over time.

METHODS

A 12-week, single-blinded, parallel-arm, randomized controlled trial was implemented, with assessments at baseline and at 4 (acute), 8, and 12 weeks (follow-up). A total of 72 community adults aged 18 to 64 years were randomized. The immediate group (n=38) received access to iDBT at baseline, and the delayed group (n=34) received access after 4 weeks. The intervention (Pocket Skills 2.0) was a self-guided iDBT via a website, with immediate access to all content, additional text and email reminders, and additional support meetings as requested. Our primary outcome was substance dependence, with secondary outcomes pertaining to feasibility, clinical outcomes, functional disability, and emotion dysregulation, among other measures. All outcomes were assessed using self-report questionnaires.

RESULTS

iDBT was perceived as a credible and acceptable treatment. In terms of feasibility, 94% (68/72) of the participants started iDBT, 13% (9/68) were early dropouts, 35% (24/68) used it for the recommended 8 days in the first month, and 50% (34/68) were still active 4 weeks later. On average, the participants used iDBT for 2 hours and 24 minutes across 10 separate days. In the acute period, no greater benefit was found for the immediate group on substance dependence, although we did find lower depression (b=-2.46; P=.02) and anxiety (b=-2.22; P=.02). At follow-up, there were greater benefits in terms of reduced alcohol (b=-2.00; P=.02) and nonalcoholic substance (b=-3.74; P=.01) consumption in the immediate access group. Both groups demonstrated improvements in substance dependence in the acute (b=-1.73; P<.001) and follow-up period (b=-2.09; P<.001). At follow-up, both groups reported reduced depression, anxiety, suicidal behaviors, emotional dysregulation, and functional disability.

CONCLUSIONS

iDBT is a feasible and acceptable intervention for patients with SUDs, although methods for improving engagement are warranted. Although results did not support efficacy for the primary outcome at 4 weeks, findings support reductions in substance dependence and other mental health concerns at 12 weeks. Notwithstanding the limitations of this study, the results suggest the potential value of iDBT in the treatment of SUDs and other mental health conditions.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05094440; https://clinicaltrials.gov/show/NCT05094440.

Measurement invariance of the Marijuana Motives Measure among men and women using Stop Cannabis App

BACKGROUND

Motives to use cannabis play a central role in the development and maintenance of problematic cannabis use and previous studies stressed sex-related differences on motives to use cannabis. However, motives cannot be validly compared in men and women without first establishing the measurement invariance across sex. Therefore, the aim of the study is to (1) examine for the first time the measurement and structural invariance of the Marijuana Motives Measure (MMM) across sex, and (2) to investigate the motives for cannabis use that best explain problematic use.

METHODS

2951 (41.7% women) users of the "Stop cannabis" smartphone app of which 99.8% reported having used cannabis in the last three months completed an online MMM and ASSIST to assess the severity of their problematic cannabis use.

RESULTS

Multigroup confirmatory factor analyses supported measurement invariance across sex, whereas structural invariance was not confirmed. Indeed, group comparisons indicated that women reported greater coping motives then men whereas men showed greater social motives than women. A multiple linear regression analysis showed that only coping and conformity motives were significantly associated with greater problematic cannabis use, whereas neither sex nor the sex by motives interactions were significantly related to problematic cannabis use.

CONCLUSIONS

The MMM appears to function comparably across men and women. Therefore, sex-related comparisons on the questionnaire can be considered valid. Coping and conformity motives may play a central role part in the development of marijuana use problems which may hold implications for intervention development and public policy.

Snus use in football: the threat of a new addiction?

The use of Snus, an oral nicotine pouch, is becoming increasingly common in English professional football. As a nicotine product, Snus raises important questions about health and performance for practitioners. The purpose of this short communication is to explain the current regulatory status of Snus, performance relatedeffects, and associated health outcomes. Further, based on player statements and evidence from the general public, we argue that Snus is used as a coping mechanism to deal with the stressors of professional football. Accordingly, the communication concludes with guidance for club-level multidisciplinary interventions to support player welfare, aimed at reducing Snus use as well as future research recommendations.

Associations between adverse childhood experiences and substance use: A meta-analysis

BACKGROUND

Adverse childhood experiences (ACEs) can be associated with negative health outcomes such as substance use. However, extant literature assessing this association is mixed.

OBJECTIVE

The present meta-analysis was conducted to obtain a pooled effect size for the association between ACEs and substance use (i.e., smoking, problematic alcohol use, heavy alcohol use, illicit drug use, and cannabis use).

PARTICIPANTS AND SETTING

The present meta-analyses included 102 studies (N = 901,864), where 42.32 % of participants were male, and the mean age was 30.91 years.

METHODS

Searches were conducted in MEDLINE, Embase, and PsycINFO in August 2021 and moderators were examined. Inclusion criteria included studies that measured ACEs prior to age 18 and substance use, and were published in English. All analyses were completed in Comprehensive Meta-Analysis Software, Version 3.0 (Borenstein et al., 2009).

RESULTS

Pooled effect sizes between ACEs and smoking [OR = 1.803 (95 % CI 1.588, 2.048)], problematic alcohol use [OR = 1.812 (95 % CI 1.606, 2.044)], heavy alcohol use [OR = 1.537 (95 % CI 1.344, 1.758)], cannabis use [OR = 1.453 (95 % CI 1.184, 1.786)] and illicit drug use [OR = 1.695 (95 % CI 1.530, 1.878)] were significant. Significant moderators contribute to the understanding of the association between ACEs and substance use, and are discussed extensively.

CONCLUSIONS

ACEs confer risk for substance use and trauma-informed approaches to substance use treatment should be considered. Study limitations and implications are discussed.

A prospective study on body image disturbances during pregnancy and postpartum: the role of cognitive reappraisal

Background

During pregnancy, body size rapidly modifies over a relatively short period. Literature emphasizes the need to identify the factors that influence body image during peripartum as the extent of women's adaptation to these changes has significant repercussions on both mother's and newborn's health. Emotion regulation strategies (i.e., expressive suppression and cognitive reappraisal) were linked to body image in the general and clinical population, but no studies were conducted in the peripartum. The present study aims to investigate the longitudinal impact of prepartum body image disturbances on postpartum body image disturbances and to evaluate the mediational role of emotional regulation strategies.

Methods

A total of 133 pregnant women completed a three-phase longitudinal study. Women answered online questionnaires during the second (T1) and the third (T2) trimesters of pregnancy, and at about 6 months postpartum (T3).

Results

Findings indicated that body image disturbances at T1 were a significant predictor of body image disturbances in the postpartum (1 year after the first assessment). Moreover, cognitive reappraisal measured at T2 partially mediated this relationship: body image disturbances in the second trimester of pregnancy were linked to less use of cognitive reappraisal in the third trimester of pregnancy, and this, in turn, was associated with worse body image disturbances at 6 months after birth.

Conclusion

Findings of this longitudinal study highlight the importance of assessing body image disturbances during pregnancy to early identify women at risk, and suggest cognitive reappraisal as a possible target intervention.

Impulsivity and Alcohol Use during Pregnancy and Postpartum: Insights from Novel Methodological Approaches within the Context of the COVID-19 Pandemic

Impaired emotion regulation and impulsivity have been linked to substance use. This study evaluated the association between emotion regulation difficulties-specifically impulsivity-and substance use within the context of the COVID-19 pandemic among pregnant (n = 49) and postpartum (n = 20) women. Participants from a prospective cohort ENRICH-2 completed a baseline phone survey of COVID-19-related experiences and impulsivity followed by a 14-day (3x/day) mobile ecological momentary assessment (mEMA) of impulsivity and substance use. Between-subject (BS) and within-subject (WS) associations for baseline impulsivity and momentary impulsivity with respect to substance use were examined using mixed effects models. At the BS level, momentary impulsivity scores that were higher than the overall group average were positively associated with subsequent momentary reports of marijuana use (β = 1.25; p = 0.04) when controlling for pregnancy status and COVID-19-related stress. At the WS level, momentary impulsivity scores that were higher than an individual's average score were positively associated with subsequent reports of momentary alcohol use (β = 0.08; p = 0.04). This research supports the idea that impulsivity varies based on individual situations, such as stress associated with the COVID-19 pandemic, and may be an important correlate of substance use in pregnant and postpartum women. Future research might consider investigation of additional factors, which may serve to moderate or mediate the relationship between impulsivity and substance use.

Future perspectives of emerging novel drug targets and immunotherapies to control drug addiction

Substance Use Disorder (SUD) is one of the major mental illnesses that is terrifically intensifying worldwide. It is becoming overwhelming due to limited options for treatment. The complexity of addiction disorders is the main impediment to understanding the pathophysiology of the illness. Hence, unveiling the complexity of the brain through basic research, identification of novel signaling pathways, the discovery of new drug targets, and advancement in cutting-edge technologies will help control this disorder. Additionally, there is a great hope of controlling the SUDs through immunotherapeutic measures like therapeutic antibodies and vaccines. Vaccines have played a cardinal role in eliminating many diseases like polio, measles, and smallpox. Further, vaccines have controlled many diseases like cholera, dengue, diphtheria, Haemophilus influenza type b (Hib), human papillomavirus, influenza, Japanese encephalitis, etc. Recently, COVID-19 was controlled in many countries by vaccination. Currently, continuous effort is done to develop vaccines against nicotine, cocaine, morphine, methamphetamine, and heroin. Antibody therapy against SUDs is another important area where serious attention is required. Antibodies have contributed substantially against many serious diseases like diphtheria, rabies, Crohn's disease, asthma, rheumatoid arthritis, and bladder cancer. Antibody therapy is gaining immense momentum due to its success rate in cancer treatment. Furthermore, enormous advancement has been made in antibody therapy due to the generation of high-efficiency humanized antibodies with a long half-life. The advantage of antibody therapy is its instant outcome. This article's main highlight is discussing the drug targets of SUDs and their associated mechanisms. Importantly, we have also discussed the scope of prophylactic measures to eliminate drug dependence.

Challenges and future trends in wearable closed-loop neuromodulation to efficiently treat methamphetamine addiction

Achieving abstinence from drugs is a long journey and can be particularly challenging in the case of methamphetamine, which has a higher relapse rate than other drugs. Therefore, real-time monitoring of patients' physiological conditions before and when cravings arise to reduce the chance of relapse might help to improve clinical outcomes. Conventional treatments, such as behavior therapy and peer support, often cannot provide timely intervention, reducing the efficiency of these therapies. To more effectively treat methamphetamine addiction in real-time, we propose an intelligent closed-loop transcranial magnetic stimulation (TMS) neuromodulation system based on multimodal electroencephalogram-functional near-infrared spectroscopy (EEG-fNIRS) measurements. This review summarizes the essential modules required for a wearable system to treat addiction efficiently. First, the advantages of neuroimaging over conventional techniques such as analysis of sweat, saliva, or urine for addiction detection are discussed. The knowledge to implement wearable, compact, and user-friendly closed-loop systems with EEG and fNIRS are reviewed. The features of EEG and fNIRS signals in patients with methamphetamine use disorder are summarized. EEG biomarkers are categorized into frequency and time domain and topography-related parameters, whereas for fNIRS, hemoglobin concentration variation and functional connectivity of cortices are described. Following this, the applications of two commonly used neuromodulation technologies, transcranial direct current stimulation and TMS, in patients with methamphetamine use disorder are introduced. The challenges of implementing intelligent closed-loop TMS modulation based on multimodal EEG-fNIRS are summarized, followed by a discussion of potential research directions and the promising future of this approach, including potential applications to other substance use disorders.

Emotion dysregulation mediates the relationship between adverse childhood experiences and problematic gaming

Gaming disorder (i.e., gaming addiction) is a relatively common mental health disorder with a worldwide prevalence rate of 3.05%. In the present research, we examined whether emotion dysregulation mediates the relation between adverse childhood experiences and problematic gaming in two samples of current video game players. The first sample consisted of 1,262 students recruited from five universities across Canada. The second sample comprised 417 community adults residing in Canada. Both samples of participants completed an online survey which included measures of adverse childhood experiences, problematic gaming, and emotion dysregulation. A total of 45.64% (n = 576) in the university sample and 49.76% (n = 205) in the community sample met the threshold for problematic gaming. In the student sample, adverse childhood experiences were positively associated with problematic gaming. In contrast, there was no significant association between adverse childhood experiences and problematic gaming in the community sample. In both samples, adverse childhood experiences were positively associated with emotion dysregulation, and emotion dysregulation was positively associated with problematic gaming. Importantly for the present research, emotion dysregulation mediated the relationship between adverse childhood experiences and problematic gaming in both the university and community sample. Although adverse childhood experiences are distal and static risk factors for problematic gaming, emotion dysregulation is a more proximal and modifiable risk factor. The results suggest that increasing adaptive emotion regulation skills may decrease the risk of problematic gaming among individuals who have experienced an adverse childhood experience.

Long-term recovery from opioid use disorder: recovery subgroups, transition states and their association with substance use, treatment and quality of life

BACKGROUND AND AIMS

Limited information exists regarding individual subgroups of recovery from opioid use disorder (OUD) following treatment and how these subgroups may relate to recovery trajectories. We used multi-dimensional criteria to identify OUD recovery subgroups and longitudinal transitions across subgroups.

DESIGN, SETTING AND PARTICIPANTS

In a national longitudinal observational study in the United States, individuals who previously participated in a clinical trial for subcutaneous buprenorphine injections for treatment of OUD were enrolled and followed for an average of 4.2 years after participation in the clinical trial.

MEASUREMENTS

We identified recovery subgroups based on psychosocial outcomes including depression, opioid withdrawal and pain. We compared opioid use, treatment utilization and quality of life among these subgroups.

FINDINGS

Three dimensions of the recovery process were identified: depression, opioid withdrawal and pain. Using these three dimensions, participants were classified into four recovery subgroups: high-functioning (minimal depression, mild withdrawal and no/mild pain), pain/physical health (minimal depression, mild withdrawal and moderate pain), depression (moderate depression, mild withdrawal and mild/moderate pain) and low-functioning (moderate/severe withdrawal, moderate depression and moderate/severe pain). Significant differences among subgroups were observed for DSM-5 criteria (P < 0.001) and remission status (P < 0.001), as well as with opioid use (P < 0.001), treatment utilization (P < 0.001) and quality of life domains (physical health, psychological, environment and social relationships; Ps < 0.001, Cohen's fs ≥ 0.62). Recovery subgroup assignments were dynamic, with individuals transitioning across subgroups during the observational period. Moreover, the initial recovery subgroup assignment was minimally predictive of long-term outcomes.

CONCLUSIONS

There appear to be four distinct subgroups among individuals in recovery from OUD. Recovery subgroup assignments are dynamic and predictive of contemporaneous, but not long-term, substance use, substance use treatment utilization or quality of life outcomes.