Medication-assisted Therapies Research Articles

An emerging multi-omic understanding of the genetics of opioid addiction.

Opioid misuse, addiction, and associated overdose deaths remain global public health crises. Despite the tremendous need for pharmacological treatments, current options are limited in number, use, and effectiveness. Fundamental leaps forward in our understanding of the biology driving opioid addiction are needed to guide development of more effective medication-assisted therapies. This Review focuses on the omics-identified biological features associated with opioid addiction. Recent GWAS have begun to identify robust genetic associations, including variants in OPRM1, FURIN, and the gene cluster SCAI/PPP6C/RABEPK. An increasing number of omics studies of postmortem human brain tissue examining biological features (e.g., histone modification and gene expression) across different brain regions have identified broad gene dysregulation associated with overdose death among opioid misusers. Drawn together by meta-analysis and multi-omic systems biology, and informed by model organism studies, key biological pathways enriched for opioid addiction-associated genes are emerging, which include specific receptors (e.g., GABAB receptors, GPCR, and Trk) linked to signaling pathways (e.g., Trk, ERK/MAPK, orexin) that are associated with synaptic plasticity and neuronal signaling. Studies leveraging the agnostic discovery power of omics and placing it within the context of functional neurobiology will propel us toward much-needed, field-changing breakthroughs, including identification of actionable targets for drug development to treat this devastating brain disease.

Hallucinogenic potential: a review of psychoplastogens for the treatment of opioid use disorder.

The United States is entering its fourth decade of the opioid epidemic with no clear end in sight. At the center of the epidemic is an increase in opioid use disorder (OUD), a complex condition encompassing physical addiction, psychological comorbidities, and socioeconomic and legal travails associated with the misuse and abuse of opioids. Existing behavioral and medication-assisted therapies show limited efficacy as they are hampered by lack of access, strict regimens, and failure to fully address the non-pharmacological aspects of the disease. A growing body of research has indicated the potential of hallucinogens to efficaciously and expeditiously treat addictions, including OUD, by a novel combination of pharmacology, neuroplasticity, and psychological mechanisms. Nonetheless, research into these compounds has been hindered due to legal, social, and safety concerns. This review will examine the preclinical and clinical evidence that psychoplastogens, such as ibogaine, ketamine, and classic psychedelics, may offer a unique, holistic alternative for the treatment of OUD while acknowledging that further research is needed to establish long-term efficacy along with proper safety and ethical guidelines.

Opioid-specific medication-assisted therapy and its impact on criminal justice and overdose outcomes.

The overlap between justice system involvement and drug use is well-documented. Justice-involved people who misuse opioids are at high risk for relapse and criminal recidivism. Criminal justice policymakers consider opioid-specific medication-assisted therapies (MATs) one approach for improving outcomes for this population. More research is needed that explores the impacts of opioid-specific MATs for justice-involved people. This study sought to assess the effects of opioid-specific MAT for reducing the frequency and likelihood of criminal justice and overdose outcomes for current or formerly justice-involved individuals. Records were searched between May 7, 2021 and June 23, 2021. We searched a total of sixteen proprietary and open access databases that included access to gray literature and conference proceedings. The bibliographies of included studies and relevant reviews were also searched. Studies were eligible for inclusion in the review if they: (a) assessed the effects of opioid-specific MATs on individual-level criminal justice or overdose outcomes; included (b) a current or formerly justice-involved sample; and (c) a randomized or strong quasi-experimental design; and c) were published in English between January 1, 1960 and October 31, 2020. We used the standard methodological procedures as expected by The Campbell Collaboration. Twenty studies were included, representing 30,119 participants. The overall risk of bias for the experimental studies ranged from "some" to "high" and for quasi-experimental studies ranged from "moderate" to "serious." As such, findings must be interpreted against the backdrop of less-than-ideal methodological contexts. Of the 20 included studies, 16 included outcomes that were meta-analyzed using mean log odds ratios (which were reported as mean odds ratios). Mean effects were nonsignificant for reincarceration (odds ratio [OR] = 0.93 [0.68, 1.26], SE = .16), rearrest (OR = 1.47 [0.70, 3.07], SE = 0.38), and fatal overdose (OR = 0.82 [0.56, 1.21], SE = 0.20). For nonfatal overdose, the average effect was significant (OR = 0.41 [0.18, 0.91], SE = 0.41, p < 0.05), suggesting that those receiving MAT had nearly 60% reduced odds of a nonfatal overdose. The current review supports some utility for adopting MAT for the treatment of justice-involved people with opioid addiction, however, more studies that employ rigorous methodologies are needed. Researchers should work with agencies to improve adherence to medication regimens, study design, and collect more detailed information on participants, their criminal and substance use histories, onset, and severity. This would help clarify whether treatment and control groups are indeed comparable and provide better insight into the potential reasons for participant dropout, treatment failure, and the occurrence of recidivism or overdose. Outcomes should be assessed in multiple ways, if possible (e.g., self-report and official record), as reliance on official data alone may undercount participants' degree of criminal involvement.

ДОСТУП ДО ПСИХОСОЦІАЛЬНИХ ПОСЛУГ НА САЙТАХ ЗАМІСНОЇ ПІДТРИМУВАЛЬНОЇ ТЕРАПІЇ – ЧИННИК ПРОФІЛАКТИКИ ВІЛ

Ukraine is one of the leading countries in Europe in terms of HIV prevalence, with injecting drug use being one of the main drivers of HIV transmission. Medication-assisted therapies (MAT) are the most effective means of preventing HIV transmission among people who inject drugs (PWID). As of January 1, 2022, 17,043 PWID in Ukraine were receiving MAT, which constitutes about 6% of the estimated number of PWID in the country. According to the official data, 6,002 MAT patients (35.2%) live with HIV, 5,736 (95.6%) of whom receive relevant HIV treatment. MAT in Ukraine is provided on the basis of more than 240 healthcare facilities, but not all of them offer psychosocial services to their patients. The aim of this study was to examine the access of MAT patients to psychosocial services on their MAT sites as well as to assess the role of access to such services at each stage of the HIV cascade. The source of data for this study was the national registry of all MAT patients in Ukraine. Descriptive statistics and logistic regression were used for the statistical analysis. The results of the analysis showed that patients' access to psychosocial services at MAT sites significantly improves the performance of the HIV service cascade at every stage: all MAT patients living with HIV are aware of their HIV-positive status; as for the access to appropriate HIV treatment – 97% and 95% of patients who have and do not have access to psychosocial services at their MAT sites receive antiretroviral therapy, respectively; and 83% and 67%, respectively, have an undetectable level of HIV viral load. Thus, access to psychosocial services at MAT sites significantly improves the HIV cascade indicators at each stage.

Classic psychedelics in the treatment of substance use disorder: Potential synergies with twelve-step programs.

Several pilot studies have provided evidence supporting the potential of classic psychedelics like psilocybin in the treatment of substance use disorders (SUDs). If larger trials confirm efficacy, classic psychedelic-assisted psychotherapy may eventually be integrated into existing addiction treatments such as cognitive behavioral therapy, contingency management, and medication-assisted therapies. Many individuals seeking treatment for SUDs also join twelve-step facilitation (TSF) programs like Alcoholics Anonymous (AA), which are among the most widely available and accessed treatments for alcohol use disorder worldwide. For such individuals, engaging in classic psychedelic-assisted psychotherapy could be seen as controversial, as members of AA/TSF programs have historically rejected medication-assisted treatments in favor of a pharmacotherapy-free approach. We argue that classic psychedelics and the subjective experiences they elicit may represent a special, more compatible case than conventional medications. In support of this claim, we describe Bill Wilson's (the founder of AA) little known experiences with psychedelics and on this basis, we argue that aspects of classic psychedelic treatments could complement AA/TSF programs. We provide a review of clinical trials evaluating psychedelics in the context of SUDs and discuss their potential large-scale impact should they be ultimately integrated into AA/TSF.

Endogenous and exogenous opioid effects on oligodendrocyte biology and developmental brain myelination

The elevated presence of opioid receptors and their ligands throughout the developing brain points to the existence of maturational functions of the endogenous opioid system that still remain poorly understood. The alarmingly increasing rates of opioid use and abuse underscore the urgent need for clear identification of those functions and the cellular bases and molecular mechanisms underlying their physiological roles under normal and pathological conditions. This review is focused on current knowledge on the direct and indirect regulatory roles that opioids may have on oligodendrocyte development and their generation of myelin, a complex insulating membrane that not only facilitates rapid impulse conduction but also participates in mechanisms of brain plasticity and adaptation. Information is examined in relation to the importance of endogenous opioid function, as well as direct and indirect effects of opioid analogues, which like methadone and buprenorphine are used in medication-assisted therapies for opioid addiction during pregnancy and pharmacotherapy in neonatal abstinence syndrome. Potential opioid effects are also discussed regarding late myelination of the brain prefrontal cortex in adolescents and young adults. Such knowledge is fundamental for the design of safer pharmacological interventions for opioid abuse, minimizing deleterious effects in the developing nervous system.

PROTOCOL: Opioid-specific medication-assisted therapy and its impact on criminal justice and overdose outcomes.

The overlap between criminal justice system involvement and drug use is well-documented, and criminal justice agencies have been particularly overwhelmed by the recent opioid epidemic. Treating opioid (and other substance) addiction as a means to reduce risk for future criminality and improve public safety is inherently a responsibility for the criminal justice system. In turn, the criminal justice system has a responsibility to manage and treat addiction among the individuals under its purview. Policy recommendations place emphasis on the use of medication-assisted treatments (MAT) as a front-line defense among correctional populations, because its efficacy and effectiveness has been well-established in other contexts. Despite this, criminal justice agencies have been reluctant or slow to do so. The current review will provide criminal justice and substance use treatment decision-makers with information regarding the efficacy and effectiveness of opioid-specific MAT on offending and overdose outcomes. Specifically, the authors will address the following research questions: Do opioid-specific MATs reduce the frequency or likelihood of criminal justice outcomes, as defined by official or self-reported indices of criminal reconviction or rearrest, revocation of community supervision, mandated treatment failure, and specialized court docket failure? Do opioid-specific MATs reduce the frequency of opioid overdose among individuals with current or prior self-reported or official record of criminal justice system involvement? Studies were required to use strong quasi-experimental or randomized experimental designs. All studies used individual level unit of analysis and examined adults and adolescents who are male, female, or nonbinary and racially/ethnically diverse, with current opioid use and who have current or prior criminal justice involvement. Studies had to prospectively test the effects of heroin and methadone maintenance, buprenorphine, or naltrexone on criminal conviction, arrest, revocation of community supervision, technical probation or parole violation, mandated treatment failure, and specialized court docket failure. Overdose outcomes were also examined for samples in criminal justice settings such as jails, prisons, probation, and parole. This review builds upon a prior review conducted by Egli et al. (2009) and examined studies meeting the inclusion criteria above published between 1960 and October 31, 2020. The following platforms and databases (in parentheticals) were used: EBSCOhost (Criminal Justice Abstracts, SocINDEX with Full Text, Legal Collection, Wilson Omnifile, PsycINFO, Social Work Abstracts, and Women's Studies International [includes grey literature]); ProQuest (Criminal Justice Database, PAIS [includes grey literature], Dissertations and Theses Global [includes grey literature]); Gale (Expanded Academic ASAP, Opposing Viewpoints Resource Center); FirstSearch (GPO Monthly Catalog, PapersFirst [includes grey literature]); ISI Web of Knowledge (Web of Science Core Collection); Office of Justice Programs (National Criminal Justice Reference Service); Summon; and Nexis Uni. The following open access platforms and databases will also be consulted: Elsevier (Scopus [includes grey literature]); Science.gov; ClinicalTrials.gov; WHO International Clinical Trials Registry Platform (ICTRP) portal; and Google Scholar. Search terms were harvested according to their demonstrated success in drawing out relevant and complete results for studies regarding the effectiveness of opioid-specific medication-assisted therapies (MATs). From this process 5 core search strings were created, each one with the same general base terms, but unique outcome measure(s). For binary offending outcomes (e.g., arrest, conviction, incarceration, specialty court failure, mandated treatment failure, or community supervision failure) and overdose outcomes, odds ratios were computed, and for continuous or quasi-continuous outcomes (e.g., total number of arrests), a standardized mean difference type effect size was computed and then transformed into an odds ratio. We used the χ 2 test that goes with the forest plot and computed the I 2 statistic to assess heterogeneity. Risk of bias was assessed with (1) the revised Cochrane risk-of-bias tool for randomized trials; and (2) the risk of bias in non-randomized studies of interventions assessment tool.

Medication-assisted alcohol use therapies cost effective in cirrhosis

Medication-assisted alcohol use therapies cost effective in cirrhosis

Cost-effectiveness of alcohol use treatments in patients with alcohol-related cirrhosis

Alcohol use treatment such as medication-assisted therapies (MATs) and counseling are available and effective in promoting alcohol abstinence. We sought to explore the cost-effectiveness of different alcohol use treatments among patients with compensated alcohol-related cirrhosis (AC). We simulated a cohort of patients with compensated AC receiving care from a hepatology clinic over their lifetimes. We estimated costs (in 2017 US$) and benefits in terms of quality-adjusted life years (QALYs) gained from healthcare and societal perspectives. Transition probabilities, costs, and health utility weights were taken from the literature. Treatment effects of FDA-approved MATs (acamprosate and naltrexone) and non-FDA approved MATs (baclofen, gabapentin, and topiramate) and counseling were based on a study of employer-insured patients with AC. We calculated incremental cost-effectiveness ratios (ICERs) and performed one-way and probabilistic sensitivity analyses to understand the impact of parameter uncertainty. Compared to a do-nothing scenario, MATs and counseling were found to be cost-saving from a healthcare perspective, which means that they provide more benefits with less costs than no intervention. Compared to other interventions, acamprosate and naltrexone cost the least and provide the most QALYs. If the effectiveness of MATs and counseling decreased, these interventions would still be cost-effective based on the commonly used $100,000 per QALY gained threshold. Several sensitivity and scenario analyses showed that our main findings are robust. Among patients with compensated AC, MATs and counseling are extremely cost-effective, and in some cases cost-saving, interventions to prevent decompensation and improve health. Health policies (e.g. payer reimbursement) should emphasize and appropriately compensate for these interventions. Alcohol use treatments, including physician counseling and medication-assisted therapies (MATs), improve the outcomes of patients with compensated alcohol-related cirrhosis, though use and access have remained suboptimal. In this study, we found that counseling and MATs are extremely cost-effective, and in some cases cost-saving, interventions to help patients with alcohol-related cirrhosis abstain from alcohol and improve their health. Wider use of these interventions should be encouraged.

The role of the defense attorney in relation to biological interventions as rehabilitative strategies

We present a qualitative analysis, employing semi-structured interviews and grounded theory, on the perceptions of defense attorneys regarding their roles and duties in contexts involving quasi-coercive offers of biological interventions, such as medication-assisted treatment therapies for opiate dependence or chemical castration, as rehabilitative strategies in sentencing. Data are from interviews with a sample of Canadian defense attorneys. We focus our analysis on defense attorneys’ views of their roles and duties as an attorney in contexts involving the decision to consent to biological interventions in the hope of securing favorable sentences, as well as their perceptions and concerns regarding their clients’ interests in these contexts. Our analysis appears to indicate that the classical model of the role and duties of defense lawyers can accommodate the increased use of biological therapies for criminal rehabilitation, and we ultimately discuss broader implications of biological treatments as rehabilitative strategies for the criminal justice system.

How Motivations for Using Buprenorphine Products Differ From Using Opioid Analgesics: Evidence from an Observational Study of Internet Discussions Among Recreational Users.

BackgroundOpioid use disorder (OUD) poses medical and societal concerns. Although most individuals with OUD in the United States are not in drug abuse treatment, buprenorphine is considered a safe and effective OUD treatment, which reduces illicit opioid use, mortality, and other drug-related harms. However, as buprenorphine prescriptions increase, so does evidence of misused, abused, or diverted buprenorphine. Users’ motivations for extratreatment use of buprenorphine (ie, misuse or abuse of one’s own prescription or use of diverted medication) may be different from the motivations involved in analgesic opioid products. Previous research is based on small sample sizes and use surveys, and none directly compare the motivations for using buprenorphine products (ie, tablet or film) with other opioid products having known abuse potential.ObjectiveThe aim of the study was to describe and compare the motivation-to-use buprenorphine products, including buprenorphine/naloxone (BNX) sublingual film and oxycodone extended-release (ER), as discussed in online forums.MethodsWeb-based posts from 2012 to 2016 were collected from online forums using the Web Informed Services internet monitoring archive. A random sample of posts was coded for motivation to use. These posts were coded into the following motivation categories: (1) use to avoid withdrawal, (2) pain relief, (3) tapering from other drugs, (4) opioid addiction treatment, (5) recreational use (ie, to get high), and (6) other use. Oxycodone ER, an opioid analgesic with known abuse potential, was selected as a comparator.ResultsAmong all posts, 0.81% (30,576/3,788,922) discussed motivation to use one of the target products. The examination of query-selected posts revealed significantly greater discussion of buprenorphine products than oxycodone ER (P<.001). The posts mentioning buprenorphine products were more likely than oxycodone ER to discuss treatment for OUD, tapering down use, and/or withdrawal management (P<.001). Buprenorphine-related posts discussed recreational use (375/1020, 36.76%), although much less often than in oxycodone ER posts (425/508, 83.7%). Despite some differences, the overall pattern of motivation to use was similar for BNX sublingual film and other buprenorphine products.ConclusionsAn analysis of spontaneous, Web-based discussion among recreational substance users who post on online drug forums supports the contention that motivation-to-use patterns associated with buprenorphine products are different from those reported for oxycodone ER. Although the findings presented here are not expected to reflect the actual use of the target products, they may represent the interests and motivations of those posting on the online forums. Buprenorphine-related posts were more likely to discuss treatment for OUD, tapering, and withdrawal management than oxycodone ER. Although the findings are consistent with a purported link between the limited availability of medication-assisted therapies for substance use disorders and use of diverted buprenorphine products for self-treatment, recreational use was a motivation expressed in more than one-third of buprenorphine posts.

INNOVATIONS IN SUBSTANCE USE DISORDERS TREATMENT FOR OLDER ADULTS

In this session, we will discuss substance use disorders among older adults. We will start with Dr. Radue covering the epidemiology, recognition, screening, and diagnosis of these disorders. She will describe the most current evidence-based recommendations for screening tools to identify substance use problems among older adults. Dr. Scharrer will then cover opioid use disorders treatment in older adults, including unique challenges of utilizing medication-assisted therapies (MAT) in this population and across living and care transitions. Dr. Tumba will provide an overview of alcohol use disorders within the geriatric population, specifically focusing on evidenced-based recommendations pertaining to withdrawal management, behavioral management, and long-term medication and non-medication treatment. Dr. Tumba will also discuss alcohol-related dementias, and the unique challenges presented by behavioral and psychological symptoms of these dementias, as well as provide management recommendation. We will finish with Dr. Bessey leading a discussion on what we have covered, with ample time for active questions and engagement from the audience

The Role of the Defense Attorney in Relation to Biological Interventions As Rehabilitative Strategies

We present a qualitative analysis, employing semi-structured interviews and grounded theory, on the perceptions of defense attorneys regarding their roles and duties in contexts involving quasi-coercive offers of biological interventions, such as medication-assisted treatment therapies for opiate dependence or chemical castration, as rehabilitative strategies in sentencing. Data are from interviews with a sample of Canadian defense attorneys. We focus our analysis on defense attorneys’ views of their roles and duties as an attorney in contexts involving the decision to consent to biological interventions in the hope of securing favorable sentences, as well as their perceptions and concerns regarding their clients’ interests in these contexts. Our analysis appears to indicate that the classical model of the role and duties of defense lawyers can accommodate the increased use of biological therapies for criminal rehabilitation, and we ultimately discuss broader implications of biological treatments as rehabilitative strategies for the criminal justice system.

Advancing the implementation and sustainment of medication assisted treatment for opioid use disorders in prisons and jails

BackgroundOpioid use disorder (OUD) is among the most prevalent medical condition experienced by incarcerated persons, yet medication assisted therapy (MAT) is uncommon. Four jail and prison systems partnered with researchers to document their adoption of MAT for incarcerated individuals with opioid use disorders (OUD) using their established treatment protocols. Employing the EPIS (Exploration, Planning, Implementation, and Sustainment) framework, programs report on systematic efforts to expand screening, treatment and provide linkage to community-based care upon release.ResultsAll four systems were engaged with implementation of MAT at the outset of the study. Thus, findings focus more on uptake and penetration as part of implementation and sustainment of medication treatment. The prevalence of OUD during any given month ranged from 28 to 65% of the population in the participating facilities. All programs developed consistent approaches to screen individuals at intake and provided care coordination with community treatment providers at the time of release. The proportion of individuals with OUD who received MAT ranged considerably from 9 to 61%. Despite efforts at all four sites to increase utilization of MAT, only one site achieved sustained growth in the proportion of individuals treated over the course of the project. Government leadership, dedicated funding and collaboration with community treatment providers were deemed essential to adoption of MAT during implementation phases. Facilitators for MAT included increases in staffing and staff training; group education on medication assisted therapies; use of data to drive change processes; coordination with other elements of the criminal justice system to expand care; and ongoing contact with individuals post-release to encourage continued treatment. Barriers included lack of funding and space and institutional design; challenges in changing the cultural perception of all approved treatments; excluding or discontinuing treatment based on patient factors, movement or transfer of individuals; and inability to sustain care coordination at the time of release.ConclusionsAdoption of evidence-based medication assisted therapies for OUD in prisons and jails can be accomplished but requires persistent effort to identify and overcome challenges and dedicated funding to sustain programs.

Prisons: ignore them at our peril.

People with HIV and HCV are concentrated within criminal justice settings globally, primarily related to criminalization of drug use. This review examines updated prevention and treatment strategies for HIV and HCV within prison with a focus on people who inject drugs and the challenges associated with the provision of these services within prisons and other closed settings and transition to the community. The prevalence of HIV and HCV are several-fold higher in the criminal justice system than within the broader community particularly in regions with high prevalence of injecting drug use, such as Asia, Eastern Europe and North America and where drug use is criminalized. Strategies to optimize management for these infections include routine screening linked to treatment within these settings and medication-assisted treatments for opioid dependence and access to syringe services programs. We build upon the 2016 WHO Consolidated Guidelines through the lens of the key populations of prisoners. Linkage to treatment postrelease, has been universally dismal, but is improved when linked to medication-assisted therapies like methadone, buprenorphine and overdose management. In many prisons, particularly in low-income and middle-income settings, provision of even basic healthcare including mental healthcare and basic HIV prevention tools remain suboptimal. In order to address HIV and HCV prevention and treatment within criminal justice settings, substantial improvement in the delivery of basic healthcare is needed in many prisons worldwide together with effective screening, treatment and linkage of treatment and prevention services to medication-assisted therapies within prison and linkage to care after release.

Supporting Providers After Drug Overdose Death.

Supporting Providers After Drug Overdose Death.

Misuse of Novel Synthetic Opioids: A Deadly New Trend.

Novel synthetic opioids (NSOs) include various analogs of fentanyl and newly emerging non-fentanyl compounds. Together with illicitly manufactured fentanyl (IMF), these drugs have caused a recent spike in overdose deaths, whereas deaths from prescription opioids have stabilized. NSOs are used as stand-alone products, as adulterants in heroin, or as constituents of counterfeit prescription medications. During 2015 alone, there were 9580 deaths from synthetic opioids other than methadone. Most of these fatalities were associated with IMF rather than diverted pharmaceutical fentanyl. In opioid overdose cases, where the presence of fentanyl analogs was examined, analogs were implicated in 17% of fatalities. Recent data from law enforcement sources show increasing confiscation of acetylfentanyl, butyrylfentanyl, and furanylfentanyl, in addition to non-fentanyl compounds such as U-47700. Since 2013, deaths from NSOs in the United States were 52 for acetylfentanyl, 40 for butyrylfentanyl, 128 for furanylfentanyl, and 46 for U-47700. All of these substances induce a classic opioid toxidrome, which can be reversed with the competitive antagonist naloxone. However, due to the putative high potency of NSOs and their growing prevalence, it is recommended to forgo the 0.4 mg initial dose of naloxone and start with 2 mg. Because NSOs offer enormous profit potential, and there is strong demand for their use, these drugs are being trafficked by organized crime. NSOs present major challenges for medical professionals, law enforcement agencies, and policymakers. Resources must be distributed equitably to enhance harm reduction though public education, medication-assisted therapies, and improved access to naloxone.

New developments in managing opioid addiction: impact of a subdermal buprenorphine implant.

Opioid addiction to prescription and illicit drugs is a serious and growing problem. In the US alone, >2.4 million people suffer from opioid use disorder. Government and pharmaceutical agencies have begun to address this crisis with recently released and revised task forces and medication-assisted therapies (MAT). For decades, oral or intravenous (IV) MATs have helped patients in their recovery by administration of opioid agonists (methadone, buprenorphine, oxycodone), antagonists (naltrexone, naloxone), and combinations of the two (buprenorphine/naloxone). While shown to be successful, particularly when combined with psychological counseling, oral and IV forms of treatment come with constraints and challenges. Patients can become addicted to the agonists themselves, and there is increased risk for diversion, abuse, or missed dosages. Consequently, long-acting implants have begun to be developed as a potentially preferable method of agonist delivery. To date, the newest implant approved by the US Food and Drug Administration (May 2016) is Probuphine®, which delivers steady-state levels of buprenorphine over the course of 6 months. Numerous studies have demonstrated its efficacy and safety. Yet, implants come with their own risks such as surgical site irritation, possible movement, and protrusion of implant out of skin. This review introduces the opioid abuse epidemic, examines existing medications used for therapy, and highlights Probuphine as a new treatment option. Costs associated with MATs are also discussed.

Advances in the treatment of opioid use disorders.

The development of medications for treating persons with opioid use disorders has expanded the number of evidence-based treatment options, particularly for persons with the most severe disorders. It has also improved outcomes compared to psychosocial treatment alone and expanded treatment availability by increasing the number of physicians involved in treatment and the settings where patients can be treated. The medications include methadone, buprenorphine, buprenorphine/naloxone, and extended-release injectable naltrexone. Studies have shown that they are most effective when used over an extended, but as-yet-unspecified, period of time and with counseling and other services, particularly for the many with psychosocial problems. Though controversial in some cultures, well-designed studies in Switzerland, the Netherlands, Germany, and Canada have demonstrated the efficacy of supervised heroin injecting for persons who responded poorly to other treatments, and this treatment option has been approved by Switzerland and a few other E.U. countries. The degree to which medication-assisted therapies are available is dependent on many variables, including national and local regulations, preferences of individual providers and their geographical location, treatment costs, and insurance policies. Greater availability of medication-assisted therapies has become a major focus in the U.S. and Canada, where there has been a marked increase in deaths associated with heroin and prescription opioid use. This paper provides a brief summary of these developments.

A Naturalistic Evaluation of Extended-Release Naltrexone in Clinical Practice in Missouri

The purpose of this study was to compare the naturalistic outcomes of individuals with alcohol or opioid use problems who were treated with extended-release naltrexone (XR-NTX) to those treated with psychosocial treatment only and also to those treated with other medication-assisted therapies in Missouri during 2010 to 2011. We analyzed intake and discharge data collected as part of SAMHSA's Treatment Episode Data Set assessments. Patients who received XR-NTX during their treatment episode were compared, for those reporting alcohol (but not opioids) as their problem (N=21,137), to those who received oral naltrexone, acamprosate, and psychosocial treatment only, and for those who reported opioids as a problem (N=8996), to those receiving oral naltrexone, buprenorphine/naloxone, and psychosocial treatment only. Group differences were adjusted using propensity score weighting, with propensity scores derived from 18 intake variables. For the alcohol sample, patients who received XR-NTX vs. the oral naltrexone group had superior composite outcomes on a measure combining abstinence, self-help participation, employment, and arrests. For the opioid sample, XR-NTX was found to have significantly better outcomes than oral naltrexone on the composite outcome measure. For both the alcohol and opioid samples, the group that received XR-NTX stayed in treatment longer vs. psychosocial treatment only. In the opioid sample, those receiving buprenorphine/naloxone remained in treatment longer than those receiving XR-NTX.