Inhalant Abuse of Ethyl Chloride Spray: A Case Report.

Ethyl chloride spray, which is usually used to relieve pain after injuries, is increasingly being used as a sniffing alternative. The number of people using this is rising due to its easy availability, cost-effectiveness and legality. The high lipid solubility of ethyl chloride leads to a rapid absorption of it in the lungs. However, data on the biotransformation of ethyl chloride in humans are sparse. We present the case of a 53-year-old male who had been inhaling ethyl chloride up to 3 times a week since 25 years, and describe his symptoms and the circumstances of abuse. This should help raise awareness of this issue so that abuse can be recognized early and rapid action taken.

Binding potential changes of SERT in patients with depression are associated with remission: A prospective [¹²³I]ß-CIT-SPECT study.

The status of remission in patients with major depressive disorder treated with selective serotonin reuptake inhibitors (SSRIs) is mostly evaluated with clinical rating scales. Morphological correlates of the remission status remain a rare event. Addressing this challenge, we investigated functional correlates of remission by assessment of serotonin and dopamine transporter availability (SERT and DAT) using single-photon emission computed tomography (SPECT). Our purpose was to identify changes in the SERT/DAT binding potential in accordance with the clinical improvement. Nineteen drug-naïve patients with a Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnosis of major depression were included. [¹²³I]2ß-carbomethoxy-3ß-(4-iodophenyl)tropane(ß-CIT) SPECT was obtained from each participant before (baseline) and after 6 weeks (follow-up) of standardized treatment with escitalopram. The [¹²³I]ß-CIT-SPECT recordings were acquired 4 hr (SERT-weighted) and 20-24 hr p.i (DAT-weighted), and binding potentials (˜BPND: baseline, follow-up, and rate of change) were calculated for thalamus, midbrain, pons (SERT), and striatum (DAT). From all study participants, neuropsychiatric symptoms were assessed using Hamilton depression (HAM-D) and Beck Depression Inventory scores. At follow-up, patients were divided into responders and nonresponders (as well as remitters and nonremitters). Compared to nonremitted, remitted patients showed over the course of 6 weeks a significantly higher loss of SERT binding potential in the thalamus (p = .036) and in the midbrain (p = .019). Additionally, the correlation of HAM-D with SERT binding potential in the thalamus showed a trend toward significance (p = .057) with higher HAM-D scores (at baseline) leading to lower SERT binding potential. No significant associations were identified for the analysis of baseline prediction of therapy response with SERT and DAT. Our results suggest that patients who remit from their depressive symptoms under escitalopram are characterized by stronger decreases of SERT, indicating that escitalopram blocking of SERT leads to clinical improvement. Therefore, this study shows that measuring SERT availability with SPECT could be an efficient and applicable technique to illustrate a possible underlying pathophysiology of symptom remission in response to treatment. In addition, the present results could help to stimulate new treatment approaches based on SERT and DAT binding. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Treatment outcome, cognitive function, and psychopathology in methamphetamine users compared to other substance users.

BACKGROUND: The rising number of people using methamphetamine leads to an increasing need for treatment options for this patient group. Evidence-based research on the efficacy of treatment programs for methamphetamine users is limited. Due to specific characteristics of methamphetamine users, the question arises whether established treatment methods for individuals using other substances can be effective for the treatment of methamphetamine dependence as well. We hypothesize that there are significant differences between the two groups that may affect the effectiveness of treatment and worsen the prognosis of treatment outcomes for methamphetamine users compared to consumers of other substances. AIM: To investigate potential differences in cognitive functioning and psychopathology between methamphetamine users and other substance users and possible correlations with treatment outcomes. METHODS: A total of 110 subjects were recruited for an observational, longitudinal study from a German inpatient addiction treatment center: 55 patients with methamphetamine dependence and 55 patients with dependence of other substances ("OS group"). Both groups were examined at beginning (baseline) and end of treatment (after 6 mo) with regard to treatment retention, craving, cognitive functioning, psychosocial resources, personality traits, depression, and other psychiatric symptoms. Instruments used were Raven's IQ test, Mannheimer craving scale, cognitrone cognitive test battery, NEO personality factors inventory, Hamilton depression scale, Becks depression inventory, and a symptom checklist. The statistical methods used were χ 2-test, t-test and multiple mixed ANOVAs. RESULTS: A total drop-out rate of 40% (methamphetamine-group: 36.4%; OS-group: 43.6%) was observed without significant differences between groups. At baseline, methamphetamine-group subjects significantly differed from OS-group individuals in terms of a lower intelligence quotient, fewer years of education, slower working speed, and decreased working accuracy, as well as less cannabinoid and cocaine use. Methamphetamine-group subjects further showed a significantly lower score of conscientiousness, depressive, and psychiatric symptoms than subjects from the OS-group. In both groups, a reduction of craving and depressive symptoms and an improvement of working speed and working accuracy was noted after treatment. CONCLUSION: There are differences between methamphetamine users and users of other drugs, but not with regard to the effectiveness of treatment in this inpatient setting. There are differences in cognitive function and psychopathology between methamphetamine and other drugs users. The existing treatment options seem to be an effective approach in treating methamphetamine dependence.

App-based maintenance treatment for alcohol use disorder after acute inpatient treatment: Study protocol for a multicentre randomized controlled trial.

BACKGROUND: Alcohol use disorder, a prevalent and disabling mental health problem, is often characterized by a chronic disease course. While effective inpatient and aftercare treatment options exist, the transferal of treatment success into everyday life is challenging and many patients remain without further assistance. App-based interventions with human guidance have great potential to support individuals after inpatient treatment, yet evidence on their efficacy remains scarce. OBJECTIVES: To develop an app-based intervention with human guidance and evaluate its usability, efficacy, and cost-effectiveness. METHODS: Individuals with alcohol use disorder (DSM-5), aged 18 or higher, without history of schizophrenia, undergoing inpatient alcohol use disorder treatment (N = 356) were recruited in eight medical centres in Bavaria, Germany, between December 2019 and August 2021. Participants were randomized in a 1:1 ratio to either receive access to treatment as usual plus an app-based intervention with human guidance (intervention group) or access to treatment as usual plus app-based intervention after the active study phase (waitlist control/TAU group). Telephone-based assessments are conducted by diagnostic interviewers three and six weeks as well as three and six months after randomization. The primary outcome is the relapse risk during the six months after randomization assessed via the Timeline Follow-Back Interview. Secondary outcomes include intervention usage, uptake of aftercare treatments, AUD-related psychopathology, general psychopathology, and quality of life. DISCUSSION: This study will provide further insights into the use of app-based interventions with human guidance as maintenance treatment in individuals with AUD. If shown to be efficacious, the intervention may improve AUD treatment by assisting individuals in maintaining inpatient treatment success after returning into their home setting. Due to the ubiquitous use of smartphones, the intervention has the potential to become part of routine AUD care in Germany and countries with similar healthcare systems.