Co-stimulation of muscarinic M1 and M4 acetylcholine receptors prevents later cocaine reinforcement in male and female mice, but not place-conditioning

Acute stimulation of M1 or M4 muscarinic cholinergic receptors reduces cocaine abuse-related effects in mice and rats. The combined activation of these receptor subtypes produces synergistic effects on some behavioural endpoints in mice. M1 and M1 + M4 receptor stimulation in a cocaine vs. food choice assay in rats and microdialysis in rats showed delayed and lasting "anticocaine effects". Here, we tested whether these putative lasting neuroplastic changes are sufficient to occlude the reinforcing effects of cocaine at the behavioural level in mice. Mice were pre-treated with the M1 receptor partial agonist VU0364572, M4 receptor positive allosteric modulator VU0152100, or VU0364572 + VU0152100 two weeks prior to acquisition of cocaine intravenous self-administration (IVSA). Male C57BL/6JRj mice received vehicle, VU0364572, VU0152100, or VU0364572 + VU0152100. Female mice were tested with two VU0364572 + VU0152100 dose combinations or vehicle. To attribute potential effects to either reduced rewarding effects or increased aversion to cocaine, we tested VU0364572 alone and VU0364572 + VU0152100 in acquisition of cocaine-conditioned place preference (CPP) in male mice using an unbiased design. The acquisition of cocaine IVSA was drastically reduced and/or slowed in male and female mice receiving VU0364572 + VU0152100, but not either drug alone. Food-maintained operant behaviour was unaffected, indicating that the treatment effects were cocaine-specific. No treatment altered the acquisition of cocaine-CPP, neither in the post-test, nor in a challenge 14 days later. The cocaine IVSA findings confirm unusual long-lasting "anticocaine" effects of muscarinic M1 + M4 receptor stimulation. Thus, in mice, simultaneous stimulation of both receptor subtypes seems to produce potential neuroplastic changes that yield lasting effects.

Neurocognitive function and medical care utilization in Veterans treated for substance use disorder

BACKGROUND

Veterans with substance use disorder (SUD) are at high risk for cognitive problems due to neurotoxic effects of chronic drug and alcohol use coupled in many cases with histories of traumatic brain injury (TBI). These problems may in turn result in proneness to SUD relapse and reduced adherence to medical self-care regimens and therefore reliance on health care systems. However, the direct relationship between cognitive function and utilization of Veterans Health Administration (VHA) SUD and other VHA health care services has not been evaluated. We sought initial evidence as to whether neurocognitive performance relates to repeated health care engagement in Veterans as indexed by estimated VHA care costs.

METHODS

Neurocognitive performance in 76 Veterans being treated for SUD was assessed using CNS-Vital Signs, a commercial computerized cognitive testing battery, and related to histories of outpatient and inpatient/residential care costs as estimated by the VHA Health Economics Resource Center.

RESULTS

After controlling for age, an aggregate metric of overall neurocognitive performance (Neurocognition Index) correlated negatively with total VHA health care costs, particularly with SUD-related outpatient care costs but also with non-mental health-related care costs. Barratt Impulsiveness Scale scores also correlated positively with total VHA care costs.

CONCLUSIONS

In Veterans receiving SUD care, higher impulsivity and lower cognitive performance were associated with greater health care utilization within the VHA system. This suggests that veterans with SUD who show lower neurocognitive performance are at greater risk for continued health problems that require healthcare engagement. Cognitive rehabilitation programs developed for brain injury and other neurological conditions could be tried in Veterans with SUD to improve their health outcomes.

A bio-inspired reinforcement learning model that accounts for fast adaptation after punishment

Humans and animals can quickly learn a new strategy when a previously-rewarding strategy is punished. It is difficult to model this with reinforcement learning methods, because they tend to perseverate on previously-learned strategies - a hallmark of impaired response to punishment. Past work has addressed this by augmenting conventional reinforcement learning equations with ad hoc parameters or parallel learning systems. This produces reinforcement learning models that account for reversal learning, but are more abstract, complex, and somewhat detached from neural substrates. Here we use a different approach: we generalize a recently-discovered neuron-level learning rule, on the assumption that it captures a basic principle of learning that may occur at the whole-brain-level. Surprisingly, this gives a new reinforcement learning rule that accounts for adaptation and lose-shift behavior, and uses only the same parameters as conventional reinforcement learning equations. In the new rule, the normal reward prediction errors that drive reinforcement learning are scaled by the likelihood the agent assigns to the action that triggered a reward or punishment. The new rule demonstrates quick adaptation in card sorting and variable Iowa gambling tasks, and also exhibits a human-like paradox-of-choice effect. It will be useful for experimental researchers modeling learning and behavior.

The impact of tobacco tax increases on cost-minimising behaviours and subsequent smoking cessation in Australia: an analysis of the International Tobacco Control Policy Evaluation Project

OBJECTIVE

We examined the relationship in Australia from 2007 to 2020 between tobacco tax increases and use of cost-minimising behaviours (CMBs) when purchasing tobacco and: (1) tobacco expenditure and (2) smoking cessation attempts and quit success.

METHODS

We used data collected from adults who smoked factory-made and/or roll-your-own (RYO) cigarettes in nine waves (2007-2020) of the International Tobacco Control Policy Evaluation Project Australia Survey (Nsample=4975, Nobservations=10 474). CMBs included buying RYO tobacco, cartons, large-sized packs, economy packs, or tax avoidance/evasion, smoking reduction and e-cigarette use. Logistic regression, fit using generalised estimating equations, estimated the CMB-outcome association for quit attempts and quit success at the next wave follow-up (Nsubsample=2984, Nobservations=6843).

RESULTS

Over half of respondents used a CMB for tobacco purchase (P-CMB) at baseline (57.1% in 2007-2008), increasing to 76.8% (2018) post-tax increases. Participating in any P-CMB was associated with having higher weekly tobacco expenditure. Engaging in any P-CMB was negatively associated with attempting to quit (aOR=0.82, 95% CI 0.69-0.98). Purchasing RYO tobacco or cartons was associated with making no quit attempts (aOR=0.66, 95% CI 0.52-0.83; aOR=0.72, 95% CI 0.59-0.89, respectively). Among respondents smoking cigarettes who made quit attempts, there were no significant associations between all P-CMBs and quit success. Neither smoking reduction nor vaping were significantly associated with quit attempts.

CONCLUSION

P-CMBs are associated with reduced smoking cessation. Reducing opportunities for industry to promote purchasing-related CMB options, such as by standardising pack sizes and reducing the price differential between RYO and manufactured cigarettes could increase the effectiveness of tax increases.

A mixed method study exploring similarities and differences in general and social services-specific barriers to treatment-seeking among individuals with a problematic use of alcohol, cannabis, or gambling

INTRODUCTION

The treatment gap for addictive disorders is one of the largest in health care. Several studies have investigated barriers to treatment for different addictive disorders, but very few studies conducted have explored whether the barriers differ depending on substance or behavior or if they are common among all addictive disorders. In Sweden, addiction care is provided both by the healthcare and social services, where the latter is common, but also less popular. To our knowledge, there are no studies exploring whether the barriers are different depending on where the treatment is given.

AIM

The aim was to thoroughly explore both which general and social services-specific barriers to treatment that are common, which barriers that differs, and how the barriers are described among individuals with a problematic use of alcohol, cannabis and/or gambling.

METHOD

A mixed method convergent parallel design was conducted. For the quantitative measures, surveys including the validated Barriers to Treatment Inventory as well as questions regarding barriers in the Swedish multi-provider landscape, were collected from individuals with a problematic use of alcohol (n = 207), cannabis (n = 51), and gambling (n = 37). In parallel, 17 semi-structured interviews from the same population were conducted and analyzed with thematic analysis. Thereafter, the quantitative and qualitative data was compared, contrasted, and at last, interpreted.

RESULTS

The quantitative data showed that the largest general barriers in all groups were privacy concern and poor availability, and the largest barriers for seeking help from the social services was stigma, unawareness of what is offered, and fear of consequences for all groups. The qualitative data resulted in five general barriers: stigma, ambivalence, accessibility, fear of consequences, and lack of knowledge about addiction and its' treatments, and three barriers specifically towards social services: social services reputation, fear of meeting acquaintances, and lack of knowledge. The themes were developed from data from all groups, but different aspects of the themes were mentioned by different groups.

CONCLUSION

There are details and aspects that differentiates both the general and social service-specific barriers to treatment between individuals with a problematic use of alcohol, cannabis, and gambling, but in large they perceive similar barriers.

Evidence-based treatment for opioid use disorder is widely unavailable and often discouraged by providers of residential substance use services in North Carolina

INTRODUCTION

Opioid agonist treatment (OAT) is the only treatment for opioid use disorder (OUD) proven to reduce overdose mortality, yet access to this evidence-based treatment remains poor. The purpose of this cross-sectional audit study was to assess OAT availability at residential substance use services in North Carolina.

METHODS

We conducted a state-wide inventory of residential substance use service providers in North Carolina and subsequently called all providers identified, posing as uninsured persons who use heroin, seeking treatment services. Program characteristics, as reported in phone calls, were systematically recorded. We used Fisher's exact tests to assess what program characteristics were associated with OAT availability and with staff making discouraging comments about OAT. We used unsupervised agglomerative clustering to identify facilities with similar characteristics.

RESULTS

Of the 94 treatment providers identified, we successfully contacted and collected data from 66. Of those, only 7 (10.6 %) provide OAT on site; an additional 9 (13.6 %) allow OAT through an outside or community-based prescriber. Only 8 (12.1 %) providers were licensed to provide residential substance use treatment. Staff from 33 (50.0 %) providers made negative, discouraging, or stigmatizing remarks about OAT-for example, that OAT substitutes one addiction for another or does not constitute "true recovery." OAT availability was positively associated with a provider holding a state license for any substance use-related service (41.9 % vs 8.6 %, p = 0.002) and offering 12-step programming (36.1 % vs. 10/0 %, p = 0.020). OAT availability was negatively associated with faith-based programming (6.1 % vs 42.4 %, p = 0.001), dress codes (5.3 % vs 50.0 %, p < 0.001), and mandates that residents work in a provider-owned and -operated commercial enterprise (5.0 % vs 32.6 %, p = 0.026). Cluster analysis revealed that the most common (n = 21) type of service provider in North Carolina is an unlicensed, faith-based organization that prohibits OAT, imposes a dress code, and mandates that residents work, often in provider-owned and -operated commercial enterprises.

CONCLUSION

Evidence-based treatments for OUD are largely unavailable at providers of residential substance use services in North Carolina. The prohibition of OAT occurs most often among providers who are unlicensed and impose labor and/or 12-step mandates on residents. Changes to state licensure requirements and exemptions may help improve OAT availability.

Prevalence of video gaming disorder in Saudi Arabia: a school-based national study

BACKGROUND

Video gaming is a popular leisure activity among adolescents. Those who play excessively are in danger of educational and social drawbacks and may become addicted to video gaming. Several published studies determined the prevalence of GD among children in specific Saudi regions. However, the current study assessed the national prevalence of video gaming disorder (GD) and its risk factors among school students in Saudi Arabia.

METHODS

A school-based survey was conducted among adolescents in all regions of Saudi Arabia during the academic year 2021-2022. A multistage stratified cluster sampling technique was used to select the school students. An Arabic-validated version of the 9-item dichotomous (yes/no) GD Scale based on the DSM-5 criteria was used to determine GD prevalence among the students. The score ranged from zero to nine (0-9). Participants who scored five or more were deemed as having GD. Students who scored less than five were classified as normal gamers (score 0-1) or risky gamers (score 2-4).

RESULTS

 We recruited 5332 school students. Their mean age was 15.5 ± 1.7 years, and almost half of them were males (50.7%). According to the GD score, the prevalence of normal gamers was 39.08% (N = 1714), risky gamers 40.47% (N = 1775), and those with GD was, 20.45% (N = 897). Logistic regression was performed to determine the association between video gaming disorder and all the gathered variables, which include age, educational grade, sex, types of video gaming, and categories of video games played. The results showed that nationality, age, educational grade, sex, using only mobile devices to play, and playing puzzle and sports games were not associated with video gaming disorder. On the other hand, it was revealed that using tablets, game consoles, PCs; having multiple devices; and playing online, fighting, car racing, war, and adventure games were significantly linked to GD.

CONCLUSION

The prevalence of GD was 20.45% among Saudi school students who play video games. Utilizing more than one type of gaming device and playing games in the fighting, war, and multiplayer categories via an online connection were significantly linked to having GD. To limit video gaming addiction, we encourage screening, diagnosing, and treating disordered video gamers early. In addition, governmental authorities and video game companies should discuss and revise numerous policy measures to minimize the accessibility of video games, limit the harms and risks related to them, and assist video gamers in becoming effective members of society.

Threats of nursing productivity in the digital era: investigating the interplay between smartphones addiction and procrastination behavior among nurses

BACKGROUND

Controlling smartphone addiction and procrastination among nurses is crucial for enhancing the productivity of both nursing and the healthcare system. Critical care nurses are highly vulnerable to smartphone addiction and procrastination behaviors than other groups. They may purposefully delay their tasks, a practice known as active procrastination, or inadvertently delay them, a practice known as passive procrastination.

AIM

This study was designed to assess the prevalence of smartphone addiction and procrastination behavior among nurses, examine the effect of smartphone addiction on the active and passive procrastination behaviors, and explore the correlation between active and passive procrastination behaviors among nurses.

METHOD

This is a descriptive correlational exploratory study that was conducted at 23 critical care units of one large educational hospital in Egypt. Data were collected from 360 nurses who were conveniently selected using three tools: the Smartphone Addiction Inventory, the New Active Procrastination Scale, and the Unintentional Procrastination Scale. Correlation and regression analyses were conducted to test the hypothetical relationship among the study variables.

RESULTS

This study revealed that 55.0%, 80.0%, and 45.3% of nurses had a moderate perceived level of smartphone addiction, active procrastination behavior, and passive procrastination behavior, respectively. There is a significant positive correlation between smartphone addiction and both nurses' active and passive procrastination behaviors. Smartphone addiction accounts for 25% of the variance in nurses' active procrastination behavior and 18% of the variance in their passive procrastination. Furthermore, there is a moderately significant negative correlation between nurses' active procrastination behavior and their passive procrastination behavior.

CONCLUSION

Nurses are exhibiting moderate levels of smartphone addiction and procrastination, which is a significant threat to the healthcare industry and nursing productivity. This requires technological, educational, and organizational interventions that foster active procrastination and combat passive procrastination behaviors among nurses.

IMPLICATIONS

Continuous training programs are required to enhance time management skills among nurses and increase the awareness of nurse managers with the symptoms of smartphone addiction among nurses. Nurse leaders should early detect and address the addictive use of smartphones among nurses, identify potential procrastinators, and provide counseling to eradicate these behaviors in the workplace.

Investigation of nursing students' addiction to digital game play and associated factors

AIMS

It was conducted to investigate digital gaming addiction among nursing students and the associated factors of such addiction.

METHODS

The descriptive and relationship-seeking study's universe included 1665 nursing students in three universities' nursing faculties and departments. The sample size was determined to be 774 based on a power analysis with a type I error rate of 0.05, a power of the test of 0.80 (α = 0.05, 1-β = 0.80), and an effect size of d = 0.10. Student Information Form, The Digital Game Addiction Scale (DGAS-7), and the Digital Game Playing Motivation Scale (DGPMS) were used to collect student information. Data analysis was performed using the Mann-Whitney U test, Kruskal-Wallis H test, Spearman correlation, and Binary Logistic Regression Model.

RESULTS

It was found that 83.7% of the students were female, and the mean age and BMI were 20.03 ± 1.72 years and 21.98 ± 2.90 kg/m2, respectively. A statistically significant positive correlation was found between the students' Digital Game Addiction Scale and Digital Game Playing Motivation Scale Achievement and Energizing (r = 0.717), Curiosity and Social Acceptance (r = 0.612), and Uncertainty in Game Desire (r = -0.110) sub-dimensions mean scores (p < 0.001).

CONCLUSIONS

The relationship between nursing students' digital game addiction, game playing motivation, and several individual characteristics affecting digital games was found. The study's results call for further research to focus on developing and testing interventions that could effectively reduce gaming addiction while enhancing positive aspects of digital engagement among nursing students.

Receipt of the 5As intervention for smoking cessation among people with and without mental health disorders

Brief interventions for smoking cessation, such as the 5As (ask, assess, advise, assist, arrange) are effective, but limited data are available regarding their delivery to smokers with mental health disorders (MHDs), and whether a disparity in care exists. This study explored the difference in the self-reported receipt of 5As between smokers with and without MHDs in a community setting. Baseline data from 1452 (1206 without and 246 with self-reported MHDs) Australian smokers who participated in a smoking cessation trial were analysed. Participants reported interactions with healthcare providers and receipt of the 5As over the past 12 months. Multivariate logistic regression analysis was employed to investigate the association between receipt of the 5As and MHD status. Smokers with MHDs were significantly more likely to be asked, assessed, advised, and assisted compared to those without MHDs, but arranging follow-up was very low in both groups (7.7% with MHDs and 4.1% without MHDs). This is particularly concerning for vulnerable population like smokers with MHDs, who may struggle more in their quit attempt. The findings highlight the need to enhance the implementation of the 'arrange follow-up' component to improve cessation outcomes and reduce health disparities.

Neuroplasticity-related genes correlate with individual differences in distinct phases of oxycodone self-administration in male rats

Opioid use disorder (OUD) is a chronic condition associated with long-lasting molecular and behavioral changes. Animals with prolonged access to opioids develop behaviors similar to human OUD. Identifying associated molecular changes can provide insight to underpinnings that lead to or maintain OUD. In pilot studies, we identified several miRNA targets that are altered by the administration of oxycodone. We selected mir182 for follow up as it was recently shown to be dysregulated in plasma of men administered oxycodone. In addition, mir182 is increased in reward-related brain regions of male rats following exposure to various addictive substances. The present study utilizes a long-access oxycodone self-administration paradigm to examine changes in mir182 and its mRNA targets associated with neuroplasticity, which may be involved in the maintenance of OUD-like phenotype in rats. Male rats were trained to self-administer oxycodone (0.1 mg/kg/infusion, i. v.) for 6 h daily sessions for 12 days. Each animal had a yoked saline control that received matched saline infusions. Animals were then tested on a progressive ratio schedule to measure motivation to obtain a single infusion of oxycodone. Drug seeking was measured following 28 days of forced abstinence using a 90-min cued/test. RTqPCR was utilized to measure mir182 and mRNA targets related to neuroplasticity (wnt3, plppr4, pou3f3, tle4, cacna2d, and bdnf) from the nucleus accumbens. Data revealed that animals responded on a continuum for oxycodone. When divided into two groups termed high- and low responders, animals diverged during self-administration acquisition and maintained differences in behavior and gene expression throughout the study. mir182 was upregulated in the nucleus accumbens of both high and low responders and negatively correlated with tle4, which showed a strong negative correlation with reinstatement behavior. mRNA target levels were correlated with behaviors associated with increased severity of OUD behavior in male rats.

Hypothalamic Pituitary Adrenal and Autonomic Nervous System Biomarkers of Stress and Tobacco Relapse: Review of the Research

Tobacco smoking is a risk factor for countless diseases, and smoking relapse remains a major public health concern. Subjective reports of stress by smokers are a common theme for relapse, however, the role of objective stress-related biomarkers in predicting tobacco relapse risk has been less studied. The aim of this manuscript was to review existing literature on the connection between biomarkers of stress and smoking relapse. Overall, trends indicate that blunted hypothalamic-pituitary-adrenal (HPA) responses to acute stress, larger reductions in HPA biomarkers during the initial days of abstinence during cessation (compared to pre-cessation levels), and exaggerated autonomic responses to stress predict increased risk of relapse. In addition, successful cessation is followed by changes in stress biomarkers (e.g., reductions in cortisol and heart rate, HR). This review also identifies potential modifiers, such as methodological differences, biological sex, and chronic stress, to account for heterogeneity of findings within and across studies. In addition, we identify gaps in the literature and suggest future research directions focusing on the roles of genetics and gene expression as well as the influence of neurobiological mechanisms on stress and relapse risk. Future clinical implications of this research include identifying reliable indicators of relapse risk and the potential of pharmacotherapeutic treatments to target stress response systems to correct dysregulation and potentially reduce stress-related risk of relapse.

Effectiveness of a Systems-Wide Initiative to Address Motivation and Expectations for Treatment on Initial Session Attendance to Outpatient Gambling Treatment

This brief report expands the results of a prior efficacy study that examined the effect of a letter addressing prospective clients' motivation and expectations for outpatient gambling disorder treatment on initial session attendance. The results of that efficacy study indicated more clients attended the initial session when receiving the letter (77%) compared to receiving a reminder telephone call (51%). The present study examines the effectiveness of messages addressing prospective clients' motivation and expectations for outpatient gambling treatment across an entire treatment system. Messages were sent via letters, telephone, and in-person communication with all clinic staff. Participants were 54 clients with gambling disorder who were seeking outpatient psychological treatment. Results indicated that the percentage of clients attending the initial session was 85%, and no differences in attendance were found between in-person and telehealth sessions. These findings suggest that messages that address motivation and expectations persist under real-world conditions, and treatment systems can make meaningful changes that increase attendance to initial treatment sessions.

Formation of chronic morphine withdrawal memories requires C1QL3-mediated regulation of PSD95 in the mouse basolateral amygdala

Chronic morphine withdrawal memory formation is a complex process influenced by various molecular mechanisms. In this study, we aimed to investigate the contributions of the basolateral amygdala (BLA) and complement component 1, q subcomponent-like 3 (C1QL3), a secreted and presynaptically targeted protein, to the formation of chronic morphine (repeat dosing of morphine) withdrawal memory using conditioned place aversion (CPA) and chemogenetic methods. We conducted experiments involving the inhibition of the BLA during naloxone-induced withdrawal to assess its impact on CPA scores, providing insights into the significance of the BLA in the chronic morphine memory formation process. We also examined changes in C1ql3/C1QL3 expression within the BLA following conditioning. Immunofluorescence analysis revealed the colocalization of C1QL3 and the G protein-coupled receptor, brain-specific angiogenesis inhibitor 3 (BAI3) in the BLA, supporting their involvement in synaptic development. Moreover, we downregulated C1QL3 expression in the BLA to investigate its role in chronic morphine withdrawal memory formation. Our findings revealed that BLA inhibition during naloxone-induced withdrawal led to a significant reduction in CPA scores, confirming the critical role of the BLA in this memory process. Additionally, the upregulation of C1ql3 expression within the BLA postconditioning suggested its participation in withdrawal memory formation. The colocalization of C1QL3 and BAI3 in the BLA further supported their involvement in synaptic development. Furthermore, downregulation of C1QL3 in the BLA effectively hindered chronic morphine withdrawal memory formation, emphasizing its pivotal role in this process. Notably, we identified postsynaptic density protein 95 (PSD95) as a potential downstream effector of C1QL3 during chronic morphine withdrawal memory formation. Blocking PSD95 led to a significant reduction in the CPA score, and it appeared that C1QL3 modulated the ubiquitination-mediated degradation of PSD95, resulting in decreased PSD95 protein levels. This study underscores the importance of the BLA, C1QL3 and PSD95 in chronic morphine withdrawal memory formation. It provides valuable insights into the underlying molecular mechanisms, emphasizing their significance in this intricate process.

Hospital admissions in adolescents with mental disorders in Spain over the last two decades: a mental health crisis?

Mental disorders account for a large and increasing health burden worldwide. Characterizing the spectrum of mental disorders and trends over time in adolescents should influence education policies and support preventative strategies at schools. Retrospective study of all hospitalizations in Spain in adolescents 11-18-years old, including mental disorders as diagnosis using the Spanish National Registry of Hospital Discharges. Information was retrieved from 2000 to 2021. During the 22-year study period there were 2,015,589 hospitalizations in adolescents in Spain, of which 118,609 (5.9%) had mental disorders. The rate of psychiatric diagnoses significantly increased from 3.9% in 2000 to 9.5% in 2021. Females accounted for 55.1% of admissions. Mean age at admission declined from 17 to 15 years-old from 2000 to 2021. Mean hospital stay was 10.6 days. Mean in-hospital mortality was 0.24%. By rate order, diagnoses were: substance use disorders (SUD) (40%) > eating disorders (15%) > anxiety/posttraumatic stress disorder (PTSD) (13%) > attention deficit hyperactivity disorder (ADHD) (9%) > major depression (8%) > schizophrenia/psychosis (6%) > autism spectrum disorder (ASD) (6%) > sleep disorder (3%) > suicidal behavior (2%) > sexual disorders (1%). A significant gender dichotomy was noticed, with female predominance for internalizing disorders (i.e., anxiety, depression, suicidal behavior and eating disorders) whereas externalizing disorders (i.e., SUD, ADHD, ASD, schizophrenia and other psychoses) predominated in males. Suicidal behavior and male sex were independent predictors of in-hospital death in multivariate analysis. After the first year of the COVID-19 pandemic, hospitalizations due to mental disorders in adolescents increased by 51% in 2021. There is a growing crisis of mental health among adolescents in Spain. Although the COVID-19 pandemic has unveiled the high rate and severity of psychiatric disorders among youth, a steadily increase has occurred since the beginning of the millennium. Primary preventative strategies should be adapted to distinct and more prevalent mental disorders in adolescents.

Popularity of Zyn and other nicotine pouch brands among U.S. adolescents, young adults, and adults in 2021

OBJECTIVE

This study identifies brands of nicotine pouches used in 2021, just before the surge in popularity of Zyn use.

METHODS

We conducted a national, cross-sectional online survey of a general U.S. population (November to December 2021; N = 6131; age 13-40) via Qualtrics panels. Descriptive analyses and chi-squared tests (alpha = 0.05) were performed to assess ever and past-30-day use of nicotine pouch brands across adolescents (13-20), young adults (21-24), and adults (25-40), and to assess frequency of popular brands used among peers.

RESULTS

The top brands ever used were Zyn (overall: 30.9%; adolescents: 31.9%; young adults: 33.2%; adults: 28.3%) and Lyft (overall: 28.8%; adolescents: 28.4%; young adults: 32.9%; adults: 26.3%), with no differences in ever-use by age group (p's > 0.095). The top brands used in the past-30-days were Zyn (overall: 26.4%; adolescents: 24.5%; young adults: 24.3%; adults: 30.0%) and Rush (overall: 24.2%; adolescents: 21.0%; young adults: 22.7%; adults: 28.6%). Adults (vs. adolescents, young adults) were more likely to report past-30-day use of Lyft (p = 0.004). Participants indicated Zyn (18.5%) and Lyft (18.2%) to be the most popular brands among peers.

CONCLUSIONS

Even in 2021, Zyn was the most popular brand of nicotine pouches. Findings will help regulate and reduce impact of marketing of Zyn.

Factorial structure of the Internet Gaming Disorder questionnaire in the Italian setting: a single-factored ailment or a multifaceted condition?

INTRODUCTION

Internet Gaming Disorder (IGD) according to DSM-5 is a behavioral addiction needing additional study. IGD in youth is correlated with anxiety, depression, attention problems, interpersonal problems, social phobia, behavior problems and low academic achievement. The aim of the present research is to contribute to the understanding of the disorder, by providing preliminary data on the factorial structure of the IGD Questionnaire in the Italian version.

PARTICIPANTS

612 Italian students (323 females), mean of age = 13.94 (SD = 2.44). Instruments: a survey comprising IGD Questionnaire, Internet Addiction Test (IAT), Children's Coping Strategies Checklist (CCSC-R1), Assessment of Interpersonal Relations (AIR), and Child Behavior Checklist (CBCL).

RESULTS

15.2% of participants showed a sub-clinical IGD and 2.1% met the full diagnostic criteria. Participants with IGD showed lower scores in interpersonal relationships, worse coping strategies and higher scores in externalization. The factorial structure of the IGD Questionnaire highlights 4 factors ("addiction", "gaming as coping", "impaired control" and "negative outcomes") that explain 52.14% of the variance. A single-factor solution was also tested and results seem to be coherent with the four-factor solution, explaining less variance.

CONCLUSIONS

IGD is a complex clinical condition that can be thought both as a single-factored and as a multi-faceted condition.

Contemporary burden and trends of opioid-overdose mortality in New York State

BACKGROUND

Limited research exists on contemporary opioid overdose mortality burden and trends in New York State, with most studies focusing on New York City. This study aimed to assess opioid overdose burden and death trends in New York State by age, sex, race/ethnicity, geographic area, opioid type, and overdose intent from 1999 to 2020.

METHODS

Mortality data were obtained from the Centers for Disease Control and Prevention's WONDER database. Opioid overdose decedents were identified using relevant International Classification of Diseases, 10th Revision codes. Joinpoint regression analyzed trends, estimating annual and average annual percentage changes in age-adjusted mortality rates (AAMR). 95% confidence intervals were derived using the Parametric Method.

RESULTS

From 1999 to 2020, New York State recorded 34,109 opioid overdose deaths (AAMR = 7.9 per 100,000 persons; 95% CI: 7.8-7.9). The overall trend increased by 12.6% per year (95% CI: 10.8, 14.4) from 2004 to 2020. Subgroups exhibited varying trends, with an 11.1% yearly increase among Non-Hispanic White persons from 2007 to 2020 (95% CI: 9.0, 13.2), a 24.6% annual rise among Non-Hispanic Black persons from 2012 to 2020 (95% CI: 17.7, 31.8), and an 18.3% increase yearly among Hispanic individuals from 2011 to 2020 (95% CI: 14.0, 22.9). Recent trends have worsened in both males and females, across all age groups, in both New York City (NYC) and areas outside NYC, and for heroin, natural and semisynthetic opioids, and synthetic opioids.

CONCLUSIONS

Opioid overdose mortality in New York State has worsened significantly in the last two decades. Further research is essential to identify driving factors for targeted public health interventions.

Navigating challenges and opportunities: perspectives on digital service development in substance use disorder treatment

BACKGROUND

Some people with substance use disorders (SUD) can experience multiple co-occurring social problems. Digital solutions have been developed to support effective and cost-effective social welfare and healthcare in addictions treatment. Given the varying severity of problems from alcohol and other drug use, digital service tools can save money and provide tailored care.

OBJECTIVE

In this study we aimed to understand the perspectives of those who develop digital service tools on people with SUD and treatment encounters. As a case, we interviewed those who have been involved in the development of a digital client segmentation tool The Navigator.

METHODS

Ten (N = 10) semi-structured interviews were conducted with professionals involved in digital client segmentation tool development and were analysed with inductive content analysis. Participants were asked about the development of the Navigator from the perspectives of their own role as developers, the clients, the effectiveness of the services, and decision-making processes.

FINDINGS

Some people with SUD may face several obstacles when using digital services. Digital divide, feared or experienced stigma and biased attitudes, complex life situations, and difficulties in committing to treatment were identified as challenges. Nevertheless, digital solutions can offer the clients alternative ways of using the services that can better meet their individual needs. The anonymity and facelessness of digital solutions can reduce the fear of immediate judgement. Implementing digital solutions in substance use work poses challenges due to chronic staff shortages. Digitalisation often results in the creation of multiple simultaneously managed channels, potentially reducing time-consumption but increasing the perceived workload. There is a call for multi-professionalism, acknowledging inequalities between various disciplines within the field.

Transcranial magnetic stimulation for methamphetamine use disorder: A scoping review within the neurocircuitry model of addiction

The use of methamphetamine in the United States is increasing, contributing now to the "fourth wave" in the national opioid epidemic crisis. People who suffer from methamphetamine use disorder (MUD) have a higher risk of death. No pharmacological interventions are approved by the FDA and psychosocial interventions are only moderately effective. Transcranial Magnetic Stimulation (TMS) is a relatively novel FDA-cleared intervention for the treatment of Major Depressive Disorder (MDD) and other neuropsychiatric conditions. Several lines of research suggest that TMS could be useful for the treatment of addictive disorders, including MUD. We will review those published clinical trials that show potential effects on craving reduction of TMS when applied over the dorsolateral prefrontal cortex (DLPFC) also highlighting some limitations that affect their generalizability and applicability. We propose the use of the Koob and Volkow's neurocircuitry model of addiction as a frame to explain the brain effects of TMS in patients with MUD. We will finally discuss new venues that could lead to a more individualized and effective treatment of this complex disorder including the use of neuroimaging, the exploration of different areas of the brain such as the frontopolar cortex or the salience network and the use of biomarkers.

Substance use disorders and cooperative research on addictions: Spanish approach as a model

Substance use disorders (SUD), also named addiction when it is severe, is a chronic brain disorder with serious impact on individual who suffer, the public health and with high burden of disease. They are multitude of mechanisms/factors involved in addiction: from individual characteristics of the person (from genetic to impacts of stress, sex, and age) to social and environmental situation (availability and accessibility of substances, cultural and legal aspects, socio-economical situation) and type of substance of use (pharmacological characteristics) Then, research on Addiction must include different, complementary, and translational perspectives. In this review, we explore the neurobiological, psychosocial, and epidemiological knowledge of substance addiction, and the main role played by pharmacology in the research in this field. In Spain, since 2002, collaborative networks have emerged for comprehensive research on addictions, with the creation of the Addictive Disorders Network (RTA), currently redefined as the Research Network for Primary Care in Addictions (RIAPAd) with the support of the Carlos III Health Institute (Instituto de Salud Carlos III). Basic (including neuropharmacology and behavioral pharmacology), clinical and epidemiological research groups stand out, combining efforts to address prevention, early detection and treatment through interdisciplinary cooperation and the subsequent dissemination of results.

Navigating Care Refusal and Noncompliance in Patients with Opioid Use Disorder

BACKGROUND

For many emergency physicians (EPs), deciding whether or not to allow a patient suffering the ill effects of opioid use to refuse care is the most frequent and fraught situation in which they encounter issues of decision-making capacity, informed refusal, and autonomy. Despite the frequency of this issue and the well-known impacts of opioid use disorder on decision-making, the medical ethics community has offered little targeted analysis or guidance regarding these situations.

DISCUSSION

As a result, EPs demonstrate significant variability in how they evaluate and respond to them, with highly divergent understandings and application of concepts such as decision-making capacity, informed consent, autonomy, legal repercussions, and strategies to resolve the clinical dilemma. In this paper, we seek to provide more clarity to this issue for the EPs.

CONCLUSIONS

Successfully navigating this issue requires that EPs understand the specific effects that opioid use disorder has on decision-making, and how that in turn bears on the ethical concepts of autonomy, capacity, and informed refusal. Understanding these concepts can lead to helpful strategies to resolve these commonly-encountered dilemmas.

Social Information Processing and Executive Functions in Male Children and Adolescents with Internet Gaming Disorder

In recent years, in addition to its clinical importance, interest in the social-cognitive aspect of internet gaming disorder (IGD) has increased. This study aimed to investigate autistic traits, executive functions, and self-regulation abilities of patients with IGD. Eighty-seven male patients with IGD and eighty-three male healthy controls (HC) were included in the study. All patients were diagnosed with IGD as per the diagnostic criteria of Diagnostic and Statistical Manual of Mental Disorders-5. Healthy controls without any comorbid psychiatric diagnosis were recruited from the community. The Brief Rating Inventory of Executive Function (BRIEF) and the Social Responsiveness Scale (SRS) were implemented to evaluate autistic traits, executive functions, and self-regulation skills. The Beck Depression Inventory (BDI), Screen for Child Anxiety and Related Disorders and Internet Gaming Disorder Scale-Short-Form were used to evaluate psychopathology. The effect size of the impairments in executive functions and self-regulation skills was large (Cohen's d = 1.0-2.0). IGD groups had higher levels of autistic traits compared to healthy controls (d = 1.0-1.4). The differences in BDI and BRIEF scores remained significant in logistic regression analysis. Age at illness-onset, total severity of anxiety, and autistic traits were found as significant correlates of deficits in executive functions among patients with IGD. The results of this study supported the higher autistic traits and poorer executive function skills of patients with IGD. Deficits in executive functions were associated with autistic traits and younger age-onset of the illness.

The addiction consultation service for hospitalized patients with substance use disorder: An integrative review of the evidence

INTRODUCTION

The Addiction Consultation Service has emerged as a model of care for hospitalized patients with substance use disorder. The aim of this integrative review is to characterize the Addiction Consultation Service in general hospital settings, assess its impact on clinical outcomes, identify knowledge gaps, and offer guidance for implementation.

METHODS

We conducted an integrative review of studies from January 2002 to August 2023, applying specific inclusion criteria to collect study design, service characteristics, staffing models, utilization, and health outcomes. Additionally, a comprehensive quality appraisal was conducted for all studies considered for inclusion.

RESULTS

Findings from 41 studies meeting inclusion criteria were synthesized and tabulated. Study designs included six reports from three randomized controlled trials, five descriptive studies, and 30 observational studies. The most common study setting was the urban academic medical center. Studies evaluated the structure, process, and outcomes of the Addiction Consultation Service. A majority of studies, particularly those utilizing more rigorous designs, reported positive outcomes involving medication initiation, linkage to post-discharge care, and utilization outcomes.

CONCLUSIONS

The Addiction Consultation Service care model improves quality of care for hospitalized patients with substance use disorder. Additional research is needed to assess its effectiveness across diverse medical settings, determine the effectiveness of varying staffing models, demonstrate impactful outcomes, and establish funding mechanisms to support sustainability.

Phubbing and its impact on the individual's psychological well-being

Increasingly, smartphones have become a part of people's everyday lives, and are now considered by many to be an indispensable social accessory. Since attachment to a smartphone could have negative psychological consequences, a burgeoning new area of research has emerged which examines the effects of smartphones on individuals' well-being. Hence, this study focuses on phubbing - one's engagement with the smartphone during a face-to-face conversation with another person or group of people - and its association with psychological well-being. For this investigation, a quantitative descriptive approach has been adopted involving a sample of 370 women and men from Spain between 25 and 60 years old. The survey was distributed during late 2019 and the first quarter of 2020. The Phubbing Behaviors Survey was conducted, comprising five dimensions (cultural, technological, social, communicational, and psychological), and a total of 33 items requiring responses on a 5-point Likert scale. This survey was used in conjunction with the General Health Questionnaire (GHQ-28), consisting of four categories (somatic symptoms, social dysfunction, anxiety and insomnia, and severe depression), and 7 items per category. The findings reveal a positive correlation between phubbing and severe depression and, young women under 25 years old show higher levels of somatic symptoms than men in the same age group. This study demonstrates the need to raise awareness via health education and to promote healthy use of the Internet to prevent psychological distress resulting from phubbing.