Methadone Maintenance Treatment Program Research Articles

Perceived Social Support: An Overlooked Approach in Methadone Maintenance Treatment Program

Perceived Social Support: An Overlooked Approach in Methadone Maintenance Treatment Program

Towards adherence monitoring using breath or oral fluid as a matrix in a methadone maintenance treatment program for patients with a chronic heroin use disorder: issues and interpretation of the results.

Urine has been the preferred matrix for monitoring heroin and methadone adherence due to its large detection window. Drawbacks such as privacy concerns and adulteration require however other matrices. The study aims to determine if oral fluid and exhaled breath are suitable alternatives for heroin and methadone monitoring and to assess the detection time in exhaled breath. Forty-three participants, all on methadone and heroin-assisted treatment, were studied. Participants were monitored after the first and right before the second dosage of heroin. At both time points oral fluid and exhaled breath samples were collected with urine at the second time point. All samples were screened for opiates, methadone and other drugs using immunoassay and LC-MSMS. At the second time point, 98 percent of oral fluid samples and all exhaled breath samples tested positive for 6-monoacetylmorphine (6-MAM). Regarding morphine detection, the findings were reversed (100 percent in oral fluid, 98 percent in exhaled breath). Methadone-related results were 100 percent positive across all matrices, as expected. Notable is the detection of the heroin marker acetylcodeine in oral fluid and exhaled breath samples, which resulted in relatively low negative predictive value (average 54.6 percent). Oral fluid and exhaled breath are suitable alternatives for heroin and methadone maintenance monitoring. Clinicians should consider ease of collection, adulteration risk, costs, turn-around time, and the substance of interest while choosing a matrix. In addition, even in cases when medicinal heroin is used, medical professionals should be aware of the presence of acetylcodeine in these alternate matrices.

Correlates of Perceived Discrimination Related to Substance Use Disorders Among Patients in Methadone Maintenance Treatment

ABSTRACT This study sought to examine demographic, treatment-related, and diagnosis-related correlates of substance use disorder (SUD)-related perceived discrimination among patients receiving methadone maintenance treatment (MMT). Participants were 164 patients at nonprofit, low-barrier-to-treatment-access MMT programs. Participants completed measures of demographics, diagnosis-related characteristics (Brief Symptom Inventory (BSI-18) and Depressive Experiences Questionnaire (DEQ)), and treatment-related characteristics. Perceived discrimination was measured on a seven-point Likert-type scale ranging from 1 (“Not at all”) to 7 (“Extremely”) in response to the item: “I often feel discriminated against because of my substance abuse.” Given the variable’s distribution, a median split was used to categorize participants into “high” and “low” discrimination groups. Correlates of high and low discrimination were analyzed with bivariate and logistic regression models. Ninety-four participants (57%) reported high SUD-related perceived discrimination. Bivariate analyses identified six statistically significant correlates of SUD-related perceived discrimination (P < .05): age, race, age of onset of opioid use disorder, BSI-18 Depression, DEQ Dependency, and DEQ Self-Criticism. In the final logistic regression model, those with high (versus low) SUD-related perceived discrimination were more likely to report depressive symptoms and be self-critical. Patients in MMT with high compared to low SUD-related perceived discrimination may be more likely to report being depressed and self-critical.

Influence of CYP2B6 Genotype on Methadone Dosage in Patients from the Methadone Maintenance Treatment (MMT) Program in Pereira, Colombia.

Methadone treatment reduces the use of heroin and withdrawal symptoms; however, methadone is an expensive medication with a narrow safety margin. We compared the retention rates, persistence of heroin use, and quality of life of a group of patients undergoing conventional Methadone Maintenance Treatment (MMT) with a group for whom the CYP2B6 516G>T polymorphism was used in addition to the MMT to calculate the required methadone dose. Over 12 weeks, the retention rate, heroin usage, and quality of life of patients under conventional treatment (n = 34) were compared with those of patients for whom we used genetic markers to calculate methadone dosage (n = 38). At the end of the study, 26.4% of patients abandoned the program, and neither demographic nor clinical variables were associated with treatment adherence. Of the remaining patients, 16% of the control group and 8% of patients in the pharmacogenetic group reported heroin use, while both groups showed a 64% reduction in the use of cocaine/crack (no significant differences between the groups were found). Starting in the second week, the methadone dosage was lower among the patients for whom methadone was prescribed based on genotype. Although there were six individuals in the control group and three in the pharmacogenetic group with QTc intervals > 450 ms (a threshold that is considered dangerous), we did not find a relationship between the QTc interval and methadone dosage. There were no differences in the perception of quality of life between the two groups. The results of this pilot study suggest that concerning methadone therapy, the CYP2B6 genotype contributes to reduced effective doses and treatment costs.

Recurrent event analysis for time to dropout of newly-enrolled MMT participants in Guangdong, China: a retrospective study using the Prentice-Williams-Peterson model

Background Recurrent dropout often occurs among participants receiving methadone maintenance treatment (MMT), which negatively affects treatment effectiveness. However, few researchers focused on this phenomenon including those in China. This study examined systematically factors associated with dropout based on recurrent events analysis among Chinese MMT participants. Methods This retrospective study involved participants who firstly enrolled in MMT program between 2006 and 2017 of nine clinics in the Guangdong Province. The factors influencing recurrent dropout were identified using Prentice-Williams-Peterson model with total time (PWP-TT), then a comparison with Cox proportional hazards model was conducted. Results Among a total of 1,319 participants, 1,922 treatment episodes were identified. There were 366 (27.7%) participants remained in MMT at one year follow-up. There was a progressive shortening of the treatment episode duration among participants with multiple treatment episodes. Protective factors included higher average age (≥50 years) before attending MMT, the higher last methadone dosage before each dropout (≥50ml) and higher average dosage (≥60ml) in each episode, while being divorced, arrested in the past 3 months, having contact with drug-using friends more than once per day, and being positive for the first morphine urine test were risk factors. Additionally, higher average dosage (≥60ml) had constant protective effects on subsequential treatment episodes. Conclusions The risk of dropout increased as participants experienced multiple treatment episodes in MMT. The influencing factors for recurrent dropout were variable across all treatment episodes. Greater efforts are needed to provide sufficient methadone dosage for the participants to decrease dropout rate.

Patient experiences of methadone treatment changes during the first wave of COVID-19: a national community-driven survey

BackgroundDuring COVID-19, the Substance Abuse and Mental Health Services Administration (SAMHSA) allowed Methadone Maintenance Treatment (MMT) programs to relax in-person MMT requirements to reduce COVID-19 exposure. This study examines patient-reported changes to in-person methadone clinic attendance requirements during COVID-19.MethodsFrom June 7, 2020, to July 15, 2020, a convenience sample of methadone patients (N = 392) were recruited in collaboration with National Survivors Union (NSU) in 43 states and Washington D.C. through social media (Facebook, Reddit, Twitter, and Web site pop-ups). The community-driven research (CDR) online survey collected information on how patient take-home methadone dosing and in-person drug testing, counseling, and clinic visit frequency changed prior to COVID-19 (before March 2020) to during COVID-19 (June and July 2020).ResultsDuring the study time period, the percentage of respondents receiving at least 14 days of take-home doses increased from 22 to 53%, while the percentage receiving one or no take-home doses decreased from 22.4% before COVID-19 to 10.2% during COVID-19. In-person counseling attendance decreased from 82.9% to 19.4%. While only 3.3% of respondents accessed counseling through telehealth before COVID-19, this percentage increased to 61.7% during COVID-19. Many respondents (41.3%) reported visiting their clinics in person once a week or more during COVID-19.ConclusionsDuring the first wave of COVID-19, methadone patients report decreased in-person clinic attendance and increased take-home doses and use of telehealth for counseling services. However, respondents reported considerable variations, and many were still required to make frequent in-person clinic visits, which put patients at risk of COVID-19 exposure. Relaxations of MMT in-person requirements during COVID-19 should be consistently implemented and made permanent, and patient experiences of these changes should be explored further.

Exploring the mediating role of baseline urinalysis results on demographic characteristics and stimulant use disorder treatment outcomes

IntroductionBaseline stimulant urinalysis (UA) is one of the most reliable predictors of stimulant use disorder treatment outcomes. Yet we know little about the role of baseline stimulant UA mediating the effects of different baseline characteristics on treatment outcomes. ObjectivesThis study aimed to explore the potential mediating role of baseline stimulant UA results on the relationship between baseline characteristics and total number of stimulant negative UAs submitted during treatment. MethodsThe study team conducted analyses on data from a multisite randomized clinical trial of contingency management (CM) targeting stimulant use among individuals enrolled in methadone maintenance treatment programs (n = 394). Baseline characteristics included trial arm, education, race, sex, age, and Addiction Severity Index (ASI) composite measures. Baseline stimulant UA was the mediator and total number of stimulant negative UAs provided during treatment was the primary outcome variable. ResultsThe baseline characteristics of sex (OR = 1.85), ASI drug (OR = 0.01) and psychiatric (OR = 6.20) composites were directly associated with the baseline stimulant UA result (p < 0.05 for all). Baseline stimulant UA result (B = −8.24), trial arm (B = −2.55), ASI drug composite (B = –8.38) and education (B = −1.95) were directly associated with the total number of negative UAs submitted (p < 0.05 for all). The evaluation of indirect effects of baseline characteristics on the primary outcome through baseline stimulant UA revealed significant mediated effects for the ASI drug composite (B = −5.50) and age (B = −0.05; p < 0.05 for both). ConclusionsBaseline stimulant UA is a strong predictor of stimulant use treatment outcomes and mediates the association of some baseline characteristics and a stimulant use treatment outcome.

Investigating the effect of zinc supplementation on probability of relapse and mental health in patients with opioid use disorder undergoing methadone maintenance treatment

BackgroundConsidering different factors, such as high withdrawal rates in methadone maintenance treatment (MMT) programs alongside mental health (MH) problems appearing in patients with opioid use disorder and the lack of prior research on the effect of zinc supplementation in this respect, the present study aimed to investigate the effect of zinc supplementation on the probability of relapse (PoR) and MH problems in patients with opioid use disorder undergoing MMT.MethodsFor this purpose, a randomized controlled trial with a clinical basis was fulfilled on a total of 68 patients with opioid use disorder receiving MMT, allocated to two groups, viz. intervention, and control (each one consisting of 34 individuals). Then, the participants in the intervention group were given zinc supplements combined with methadone for three months, and the controls only took methadone, according to the treatment plan. The data were collected using the Relapse Prediction Scale (RPS) and the Depression, Anxiety, and Stress Scale 21 (DASS-21) before, one month after, and at the end of the intervention program.FindingsCompared to the control group, the likelihood of drug use (p = 0.01), drug craving (p = 0.002), and the RPS total score (p = 0.002) in the intervention group was significantly lower. Moreover, the results revealed a significant decreasing trend in depression (p = 0.01), anxiety (p < 0.001), stress (p = 0.001), and the DASS-21 total score (p = 0.001) in the intervention. Compared to the control group, the DASS-21 total score (p < 0.001) in the intervention group was significantly lower.ConclusionAccordingly, it was concluded that zinc supplementation could reduce the PoR and improve MH problems in patients with opioid use disorder experiencing MMT. However, further research is recommended to fill the gaps.Trial registrationThe research protocol has also been listed on the Iranian Registry of Clinical Trials (IRCT) with code no. IRCT2020050904736N1.

Gender differences in sexual risk behaviors among population with substance use disorders, Iran

ABSTRACT Objective We examined gender differences in Sexual Risk Behaviors (SRBs) in Iranian individuals with Substance Use Disorders (SUDs). Methods A cross-sectional study conducted from late 2018 to the end of 2019 in Tehran province, Iran. Six outpatient drug-free (ODF) and methadone maintenance treatment program (MMTP) centers were selected. A total of 600 eligible participants (300 men; 300 women) were included in the study. Participants were investigated by trained interviewers using a questionnaire to collect information on SRBs. Data were analyzed using SPSS software version 24. Results Nearly 75% of participants (64% men and 84.3% women) reported at least one lifetime experience of SRBs. Men were 62% less likely than women to have SRBs. Also, 34.7% women and 3% men had reported sexual violence. Twenty-eight percent of women and 22% of men had a history of group sex. Sixty-nine women (23%) and 20 men (6.7%) reported having had sex with intravenous drug use (IDU) partner. During the past year, the majority of participants never consistently used condoms (83%) in their sexual encounters. Conclusions Iranian women with SUDs are more likely to be involved in SRBs than their men counterparts. The differences highlighted in this study should inform treatment centers to include “safer sex” interventions in their treatment programs.

Latent profile analysis of data from the brief inventory of neurocognitive impairment (BINI) to develop neuro-cognitive profiles among opioid-dependent patients in drug treatment

Background Neurocognitive dysfunction is common among individuals with opioid use disorders (OUD) and can impede a range of treatment outcomes. We developed the 57-item Brief Inventory of Neuro-cognitive Impairment (BINI) to help detect and monitor neurocognitive dysfunction in the context of drug treatment settings. To date, no study has examined the possible presence of BINI subgroups among OUD patients, which could enhance our ability to tailor intervention strategies to meet individual treatment needs. The purpose of this study was to conduct a latent profile analysis to identify BINI subgroups that differ in terms of their reported and objective neurocognitive dysfunction. We hypothesized that subgroups would emerge, suggesting the potential benefit of implementing tailored strategies for optimal treatment outcomes. Methods Latent profile analyses included data from opioid-dependent patients (N = 177) enrolled in a methadone maintenance treatment program between July 2018 and October 2019. Results We found three profiles of self-reported neurocognitive symptoms, including those with 1) minimal concerns 2) moderate concerns, and 3) many concerns across multiple domains. Conclusions If these results are confirmed, the BINI may be used to rapidly identify persons who require specific accommodation strategies to improve their drug treatment outcomes.

The Effects of Probiotic Supplementation on Opioid-Related Disorder in Patients under Methadone Maintenance Treatment Programs.

Introduction Patients under methadone maintenance treatment programs (MMTPs) are susceptible to numerous complications (e.g., mental and metabolic disorders). This study evaluated the effects of probiotics on clinical symptoms, biomarkers of oxidative stress, inflammation, insulin resistance, and serum lipid content in patients receiving MMTPs. Materials and Methods A randomized, double-blind, placebo-controlled trial was conducted among 70 patients receiving MMTPs to receive either 1.8 × 109 CFU/day probiotics (n = 35) or placebo (n = 35) for 12 weeks. Clinical symptoms and metabolic profiles were measured before and after the intervention in patients receiving MMTPs. Results Compared with the placebo group, probiotic supplementation resulted in a significant improvement in the severity of depression (P < 0.05). In addition, probiotic administration significantly decreased fasting plasma glucose (FPG), total cholesterol, and low-density lipoprotein cholesterol (LDL cholesterol) (P < 0.05). Furthermore, probiotics resulted in a significant reduction in high-sensitivity C-reactive protein (hs-CRP) and a significant elevation in total antioxidant capacity (TAC) and total glutathione (GSH) levels (P < 0.05). Conclusion Treatment with probiotics for 12 weeks to patients receiving MMTPs had beneficial effects on symptoms of depression, as well as several metabolic profiles. Clinical Trial Registration: this study was registered in the Iranian website (https://www.irct.ir) for clinical trials registration (https://fa.irct.ir/trial/46363/IRCT20170420033551N9). The registration date is March 22, 2020.

A cohort study examining the relationship among housing status, patient characteristics, and retention among individuals enrolled in low-barrier-to-treatment-access methadone maintenance treatment

BackgroundFew studies have directly compared patient characteristics and retention among those enrolled in methadone maintenance treatment (MMT) based on housing status. Low-barrier-to-treatment-access programs may be particularly effective at attracting patients experiencing homelessness into MMT; however, the literature on retention in such settings is limited. MethodsWe performed a retrospective chart review of 488 consecutive patients enrolled from April to October 2017 at low-barrier-to-treatment-access MMT programs in southern New England. Patients completed measures of demographics, social isolation, trauma, chronic pain, smoking behavior, and psychiatric distress. The study investigated associations between housing status and correlates with chi-square and Mann-Whitney U tests while controlling the False Discovery Rate. A two-sample log-rank test examined the relationship between retention and housing status. The study further scrutinized this association by regressing retention on all covariates using a Cox proportional hazards model. ResultsForty-six patients (9.4%) reported experiencing homelessness and 442 (90.6%) reported being housed. Thirty-seven percent of patients self-identified as female and 20% as non-white. Compared to patients who were housed, those experiencing homelessness had lower rates of recent employment; higher rates of social isolation, trauma, current chronic pain, and recent cannabis use; and higher overall psychiatric distress (all p < 0.01). At one year, overall retention was 51.8%, and retention was 32.6% in the unhoused group and 53.8% in the housed group. A significant negative association occurred between retention and housing status (p = 0.006). After regressing on all covariates, homelessness was associated with a 69% increase in one-year treatment discontinuation (HR = 1.69 for homelessness, CI = 1.14–2.50). ConclusionsPatients entering MMT experiencing homelessness have multiple clinical vulnerabilities and are at increased risk for 12-month MMT discontinuation. Low-barrier-to-treatment-access MMT programs are an important venue for identifying and addressing vulnerabilities associated with homelessness.

Public health risks associated with methadone in Iran: A systematic review and meta-analysis.

There has been a marked growth in methadone maintenance treatment (MMT) in Iran in the past two decades with positive health outcomes. We conducted a systematic review of studies on the prevalence of non-prescribed methadone use, methadone use disorder, and methadone-related poisoning and mortality in Iran. We searched International and Iranian databases up to May 2020 and contacted relevant experts. The pooled proportions were estimated through random-effects model. Methadone-related adverse outcomes were evaluated over time. Sixty-five studies were included. The pooled estimates of non-prescribed methadone use in the last 12-month were 2.7% (95%CI: 0.9-5.4) and 0.1% (95%CI: 0.03-0.2) in the male and female general population, respectively. Among people who use drugs, 8.4% reported daily non-prescribed use in 2018. Four heterogeneous studies in drug treatment centers reported the existence of treatment-seeking for methadone use disorder. Methadone was responsible for 10.4% (95%CI: 4.5-18.3) of cases of acute poisoning in adults and 16.0% (95%CI: 9.3-24.1) in children. Methadone was reported as a cause of death in 53.5% of substance-related deaths referred to the Legal Medicine Organization while being the only cause in 35.8% of all cases. Non-prescribed use of methadone in the general population is much less than opiates and some other available prescription opioids, like tramadol. However, notwithstanding the large and successful MMT program in Iran, increasing trends in methadone-related poisoning and deaths pose serious public health concerns. There is an urgent need to explore these fatal and non-fatal poisoning cases and implement policies to curb the harms associated with methadone use.

Client satisfaction to methadone maintenance treatment program in Myanmar

BackgroundTo tackle the long-standing opioid misuse problem, Myanmar introduced the methadone maintenance treatment (MMT) program in 2006, starting with 260 clients. Since then, the program has been expanded across different geographical sites in the country. This study was done in 2017 to explore the treatment satisfaction of the clients towards the MMT program.MethodA total of 210 clients with a minimum of six-month treatment history enrolled in five MMT program sites across Myanmar were recruited through stratified random sampling. Administering the Verona Service Satisfaction Scale for Methadone-Treatment (VSSS-MT), this study assessed the satisfactory responses under three categories viz., 1) clinic staff professional skills; 2) basic drug intervention; 3) specific intervention (individual rehabilitation and psychotherapy).ResultsThe majority (89%, n = 186) of the respondents were satisfied with the current MMT program. Specifically, 89.5% (n = 187) were satisfied with the clinic staff professional skills category, 91.9% (n = 192) with the basic program intervention and 74.6% (n = 156) with specific interventions. Among the respondents, treatment satisfaction with the MMT program was higher (p < 0.05) in those (i) with a higher quality of life score in physical, psychological, social and environmental categories, ii) who were satisfied with their current marital and leisure status, and those iii) who consumed alcohol. Results from stepwise binary logistic regression showed alcohol consumption and physical health status had a significant association with MMT treatment satisfaction.ConclusionTreatment satisfaction of the clients, in general is high. However, the lower percentage of satisfied clients (74.6%) for the specific interventions category compared with 89.5 and 91.9% respectively for staff and basic drug management categories highlights the need for improvement in this category for overall enhancement of the MMT program.

COVID 19 and the Opioid Epidemic: An Analysis of Clinical Outcomes During COVID 19.

Background and Objectives:Here we aimed to characterize clinical outcomes in those receiving treatment at a Veterans Health Administration (VHA) methadone maintenance treatment program (MMT) during the COVID 19 pandemic in which SAMSHA regulations for MMTs were changed to provide a greater number of methadone allotments and decreased clinic-visit frequency.Methods:We report results of a single-site, pre-post cohort study of urine drug screen data 3 months before and after an increase in allotments of take-home medication from the methadone clinic. One hundred twenty-nine patients met inclusion criteria for this study. The study was reviewed by the NYHHS IRB committee and granted final approval by the Research and Development Committee.Results:The sample was predominately male, average age 66years and average years in most recent treatment is 4.1 years. No statistical significance was found between period 1 and period 2 in the positive test detection for nonprescribed opiates, methadone and illicit substances (P > .05), number of new medical illnesses or overdoses. We controlled for participant age, substance use disorder diagnosis, psychiatric disorder diagnosis, and number of years in treatment.Discussion/Conclusions:The results of the study illustrate the relative safety of the changes made at this particular MMT during the pandemic. Additionally, there was continued adherence to methadone treatment with minimal change in illicit substance use during period 1 and period 2.Scientific Significance:To these authors’ knowledge this paper is one of the first to examine clinical outcomes in those with opioid addiction prescribed methadone from MMTs during the COVID 19 pandemic.

A cross-sectional study on the association between oral health and vitamin D levels in methadone maintenance treatment program of Iranian population

Aims: The aim of this study was to investigate the relationship between oral health and Vitamin D levels in patients undergoing methadone maintenance treatment in addiction treatment centers in Kashan. Materials and Methods: This cross-sectional study was performed on 202 patients aged 18–60 years who were referred to methadone maintenance treatment clinics in Kashan. The measurement tool included a demographic information checklist and a modified oral health form of the World Health Organization. 2cc of blood was taken from patients to measure Vitamin D levels. Findings: Out of 181 patients in the study, 73.8% of patients had a methadone dose of <20 cc per day. One hundred twenty-six patients had a history of drug use. In 86.4% of patients, Vitamin D deficiencies were observed. In these patients, moderate gingival problems and moderate-to-severe dental plaque were 60.2% and 71.9%, respectively. Furthermore, the range of decayed, missing, and filled teeth (DMFT) index in these patients was 23.57 ± 7.90. No significant relationship was indicated between DMFT index and Vitamin D level. Conclusions: It is difficult to determine the main causes of oral problems among addicts. Apart from the direct effects of addiction, these patients exhibit a wide range of unhealthy behaviors such as poor oral hygiene, high sugar intake, and poor nutrition. On the other hand, most patients experience reduces in Vitamin D status.

Self-Schema, Attachment Style, and Treatment Outcome of Patients in an Opiate Maintenance Treatment Unit.

The aim of this study was to explore self-schemas and attachment style among patients in a methadone or buprenorphine maintenance treatment program of opiate dependence, in relation to treatment outcome (relapse in substance use). The study included 84 patients (21 women and 63 men) in a psychiatric clinic in Malmö, Sweden, providing maintenance treatment of opiate dependence. Three self-report instruments were employed, Young Schema Questionnaire Short version (YSQ-S) and Young Parenting Inventory (YPI) for studying self-schemas and Experiences in Close Relationships–Relationship Structures questionnaire (ECR-RS) for studying attachment style. Demographical data and relapse in substance abuse were registered. The study demonstrated, unsurprisingly, that an insecure attachment style was more common in the group of patients compared to available general population reference data. Significant correlations were found between attachment style and core beliefs about the self (self-schemas). Memories of parenting experiences from childhood (YPI) showed correlations with ongoing self-schemas (YSQ-S). Treatment outcome, defined as relapses in substance abuse, was associated to a minor degree with self-schemas but showed no correlation with attachment style. Patients who did not work or study had more maladaptive self-schemas and insecure attachment style, and a higher incidence of relapse in abuse than patients who were working or studying.

Substance Use and The Necessity for Harm Reduction Programs in Prisons: A Qualitative Study in Central Prison of Sanandaj, Iran

Background: For decades, harm reduction programs for addiction have been started in Iranian prisons. The programs comprise methadone maintenance treatment, antiretroviral treatment, and other harm reduction programs implemented as a triangular clinic. Despite the lack of funding to provide mental health services, particularly for substance use and harm reduction in prisons of low- and middle-income countries, Iran provides well-developed services. Objectives: The study investigated the implementation and achievements of harm reduction programs in Sanandaj prison located in the center of Kurdistan Province, west of Iran. Materials and Methods: This was a qualitative cross-sectional study. We used various information sources such as a checklist and group discussions. The participants were chosen by the purposive sample method and included prison authorities and harm reduction service providers and recipients. The data were analyzed by content analysis. The MAXQDA 12 software was used to manage the data. Results: The harm reduction programs included opioid substitution therapy, providing information and education, voluntary counseling and testing for blood-borne diseases, providing condoms, hepatitis C virus screening, and antiretroviral treatment. Following the implementation of the program, a significant decrease in violence, self-injury, illegal drug use and shared syringes, HIV-positive new comers, and no necessity for the needle and syringe program when starting methadone treatment was reported. Conclusions: Commitment to a strict ban on the entering of drugs to the prison is a reason for the use of high-risk methods of drug use and behaviors such as injection, self-injury, or violence. Sharing syringes and needles is a major cause of the transmission of HIV and hepatitis viruses among drug users. Harm reduction programs, especially methadone maintenance treatment and antiretroviral treatment, have reduced a large proportion of drug-related harms in prisons. Scaling up the programs and their extension to post-release treatment will greatly reduce the country's health costs.

Sociodemographic Factors Associated With HIV/HCV High-Risk Behaviors Among People Who Use Drugs on Methadone Maintenance Treatment: A 10-Year Observational Study.

Background: Sociodemographic factors have an impact worldwide on the behavior of people who use drugs (PWUD). This study attempts to clarify the sociodemographic factors related to HIV/HCV high-risk behaviors (injection drug use, syringe sharing, and multiple sex partners) among PWUD on methadone maintenance treatment (MMT) in the long term.Methods: The 13,300 PWUD recruited into the MMT program were followed during 2006–2015. Generalized estimating equations were used to examine the relationship between sociodemographic characteristics and HIV/HCV high-risk behaviors.Results: We found that male (vs. female), living alone (vs. living with family or relatives), temporary income, financial support from family/friends, and financial support from social welfare (vs. regular salary) were positively associated with injection drug use. Age of initial drug use was negatively associated with injection drug use and syringe sharing. For both genders, being unmarried (vs. married or in cohabitation), living with friends, living alone (vs. living with family or relatives), temporary income, financial supports from family/friends (vs. regular salary), being employed (vs. unemployed/between jobs) was positively associated. In contrast, age at baseline was negatively associated with having multiple sexual partners for both genders. Ethnic of non-Han (vs. Han) was positively associated with having multiple sexual partners simply for males. Being divorced or widowed (vs. married or cohabitated) was positively associated with having multiple sexual partners merely for females.Conclusion: HIV/HCV high-risk behaviors correlated with certain sociodemographic factors of PWUD receiving MMT. There is a need for improving the well-being, employment, and housing status of PWUD on MMT to reduce their HIV/HCV risk behaviors.

Methylation quantitative trait locus rs5326 is associated with susceptibility and effective dosage of methadone maintenance treatment for heroin use disorder.

Opioid use disorder is a complicated brain disease with high heritability. The underlying mechanisms of the genetic underpinnings in the susceptibility and treatment response of opioid use disorder remain elusive. To reveal the potential associations of genotypes and gene methylations of dopaminergic system genes, as well as roles of them in opioid use disorder. In the present study, we detected the DNA methylation in the promoter regions of five representative dopaminergic system genes (DRD1, DRD2, SLC6A3, TH, and COMT) between 120 patients with heroin use disorder in methadone maintenance treatment (MMT) program and 111 healthy controls. The associations of 25 SNPs in the above genes and methylation of 237 CpG sites, known as methylation quantitative trait loci (mQTLs), were determined. Then, the correlations of the above mQTLs and traits of heroin use disorder were analyzed in a sample set of 801 patients with heroin use disorder and 930 healthy controls. Our results demonstrated that several mQTLs in the DRD1 and DRD2 genes were identified both in the heroin use disorder and healthy control groups. Interestingly, rs4867798-CpG_174872884 and rs5326-CpG_174872884 in the DRD1 gene were the unique SNP-CpG pairs in the patients with heroin use disorder. Furthermore, mQTL rs5326 was associated with the susceptibility and effective dosage of MMT for heroin use disorder, and demonstrated allele-specific correlation with the expression of the DRD1 gene in the human caudate. Our findings suggest that some mQTLs may be associated with traits of opioid use disorder by implicating the DNA methylation and gene expression.