The Pharmacology of Buprenorphine Microinduction for Opioid Use Disorder.

Although expanding the availability of buprenorphine-a first-line pharmacotherapy for opioid-use disorder (OUD)-has increased the capacity of healthcare systems to offer treatment, starting this medication is fraught with significant barriers. Standard induction regimens require persons with OUD to taper and discontinue full opioid agonists and experience opioid withdrawal prior to the first dose of buprenorphine. Further, emerging evidence indicates that precipitated withdrawal during induction may impact long-term treatment outcomes. Microinduction is a novel approach that, by harnessing buprenorphine's unique pharmacological profile, may allow circumventing the needed for prolonged opioid tapers, and reduce the risk of precipitated withdrawal-holding promise to enhance treatment access. In this review, we examine the pharmacological basis for microinduction and appraise the evidence of this approach to improve clinical outcomes among persons with OUD. First, we highlight the potential dose-dependent effects of buprenorphine on two key neuroadaptations at the mu-opioid receptor (MOR)-resensitization and upregulation. We then focus on how microinduction may reverse these chronic MOR neuroadaptations, allowing the maintenance of an adequate opioid tone, and thereby potentially circumventing opioid withdrawal. Second, we describe the clinical evidence available, derived from observational reports and open-label studies, examining the potential efficacy of microinduction. Despite significant heterogeneity-exemplified by variable buprenorphine formulations, daily doses, and schedules of administration-these data provide preliminary support for the feasibility of microinduction. Finally, we provide new mechanistic, methodological, and clinical insights to guide future translational research, as well as randomized, placebo-controlled clinical trials in this compelling agenda of pharmacotherapy development.

Mobile van delivery of extended-release buprenorphine and extended-release naltrexone for youth with OUD: An adaptation to the COVID-19 emergency.

The Youth Opioid Recovery Support (YORS) intervention is a novel treatment for young adults with opioid use disorder (OUD) that uses developmentally informed strategies to reduce barriers to treatment engagement. YORS strategies, such as home delivery of extended-release buprenorphine and extended-release naltrexone for OUD, are designed to increase engagement in treatment, but with the COVID-19 pandemic these strategies increase risk of virus exposure and spread to patients and staff entering homes. We present mobile van service delivery as a potential solution to continuing to provide low-barrier care for young adults with OUD while reducing risk associated with COVID-19. Initial feedback from patients and staff is positive and lays the groundwork to test feasibility and acceptability of this intervention rigorously in future work. Mobile van delivery of extended-release medications for OUD may be a promising treatment modification for mitigating risk of COVID-19, as well as a useful option for ongoing enhancement of care.

Leveraging COVID-19 to sustain regulatory flexibility in the treatment of opioid use disorder.

The U.S. government declared the opioid epidemic as a national public health emergency in 2017, but regulatory frameworks that govern the treatment of opioid use disorder (OUD) through pharmaceutical interventions have remained inflexible. The emergence of the COVID-19 pandemic has effectively removed regulatory restrictions that experts in the field of medications for opioid use disorder (MOUD) have been proposing for decades and has expanded access to care. The regulatory flexibilities implemented to avoid unnecessary COVID-related death must be made permanent to ensure that improved access to evidence-based treatment remains available to vulnerable individuals with OUD who otherwise face formidable barriers to MOUD. We must seize this moment of COVOD-19 regulatory flexibilities to demonstrate the feasibility, acceptability, and safety of delivering treatment for OUD through a low-threshold approach.

Sharp decline in hospital and emergency department initiated buprenorphine for opioid use disorder during COVID-19 state of emergency in California.

The California Bridge Program supports expansion of medications for opioid use disorder (MOUD) in emergency departments (EDs) and hospital inpatient units across the state. Here, we describe the change in activity before and after the coronavirus disease 2019 (COVID-19) California statewide shutdown. Of the 70 participating hospitals regionally distributed across California, 52 report MOUD-related activity monthly. We analyzed data on outcomes of OUD care and treatment: identification of OUD, acceptance of referral, receipt of buprenorphine prescription, administration of buprenorphine, and follow-up linkage to outpatient OUD treatment, from May 2019 to April 2020. In estimating the expected number of patients who met each outcome in April 2020, we found decreases in the expected to observed number of patients across all outcomes (all p-values<0.002): 37% (from 1053 to 667) decrease in the number of patients identified with OUD, 34% (from 632 to 420) decrease in the number of patients who accepted a referral, 48% (from 521 to 272) decrease in the number of patients who were prescribed buprenorphine, 53% (from 501 to 234) decrease in the number of patients who were administered buprenorphine, and 33% (from 416 to 277) decrease in the number of patients who attended at least one follow-up visit for addiction treatment. The COVID-19 California statewide shutdown was associated with an abrupt and large decrease in the progress toward expanded access to OUD treatment.

The provision of counseling to patients receiving medications for opioid use disorder: Telehealth innovations and challenges in the age of COVID-19.

Historically, federal and state policies have narrowly defined treatment models that have resulted in limited access to and engagement in counseling for individuals receiving medications for opioid use disorder (MOUD; e.g., methadone and buprenorphine). In response to the coronavirus pandemic, outpatient MOUD treatment providers rapidly transitioned from traditional, in-person care delivery models to revised COVID-19 protocols that prioritized telehealth counseling to protect the health of patients and staff and ensure continuity in MOUD care. These telehealth innovations appear to mitigate many of the longstanding barriers to counseling in the traditional system and have the potential to forever alter MOUD care delivery. Drawing on data from a Rhode Island-based clinic, we argue that MOUD counseling is achievable via telehealth and outline the need for, and anticipated benefits of, hybrid telehealth/in-person MOUD treatment models moving forward.

Adaptations to jail-based buprenorphine treatment during the COVID-19 pandemic.

Correctional facilities are among the highest-risk settings for the spread of COVID-19. Prior to the COVID-19 pandemic, the Hennepin County Jail in Minneapolis, Minnesota, offered short-term methadone maintenance, buprenorphine initiation and maintenance, and naltrexone initiation and maintenance to all jail residents with moderate to severe opioid use disorder (OUD). In response to the pandemic, the jail reduced its population by 43%. The reduced jail census and relaxed federal telemedicine regulations in response to the COVID-19 public health emergency declaration allowed the jail to institute modifications that permitted individuals to start buprenorphine without an initial in-person visit with a clinician. The jail also instituted a buprenorphine taper to bridge individuals to maintenance or provide withdrawal management, depending on patient preference. With a decreased jail census, the use of remote visits, and modifications to the buprenorphine treatment program, clinicians are able to meet the OUD treatment demand. Some jails may need additional funding streams to offset pandemic-related health treatment costs.

Revising our attitudes towards agonist medications and their diversion in a time of pandemic.

The COVID-19 pandemic led government regulators to relax prescribing rules for buprenorphine and methadone, the agonist medications that effectively treat opioid use disorder, allowing for take home supplies of up to 28 days. These changes prioritized the availability of these medications over concerns about their misuse and diversion, and they provided a means for overdose prophylaxis during the highly uncertain conditions of the pandemic. In considering how to capitalize on this shift, research should determine the extent to which increased diversion has occurred as a result, and what the consequences may have been. The shifts also set the stage to consider if methadone can be safely prescribed in primary care settings, and if the monthly injectable formulation of buprenorphine is a suitable alternative to increased supplies of sublingual strips if concerns about diversion persist. The disruptions of the pandemic have caused a surge in overdose deaths, so carefully considering the prophylactic potential of agonist medications, in addition to their role as a treatment, may help us address this mortality crisis.

Treatment of opioid use disorder during COVID-19: Experiences of clinicians transitioning to telemedicine.

OBJECTIVE: The COVID-19 pandemic has transformed care delivery for patients with opioid use disorder (OUD); however, little is known about the experiences of front-line clinicians in the transition to telemedicine. This study described how, in the context of the early stages of the pandemic, clinicians used telemedicine for OUD in conjunction with in-person care, barriers encountered, and implications for quality of care. METHODS: In April 2020, we conducted semistructured interviews with clinicians waivered to prescribe buprenorphine. We used maximum variation sampling. We used standard qualitative analysis techniques, consisting of both inductive and deductive approaches, to identify and characterize themes. RESULTS: Eighteen clinicians representing 10 states participated. Nearly all interview participants were doing some telemedicine, and more than half were only doing telemedicine visits. Most participants reported changing their typical clinical care patterns to help patients remain at home and minimize exposure to COVID-19. Changes included waiving urine toxicology screening, sending patients home with a larger supply of OUD medications, and requiring fewer visits. Although several participants were serving new patients via telemedicine during the early weeks of the pandemic, others were not. Some clinicians identified positive impacts of telemedicine on the quality of their patient interactions, including increased access for patients. Others noted negative impacts including less structure and accountability, less information to inform clinical decision-making, challenges in establishing a connection, technological challenges, and shorter visits. CONCLUSIONS: In the context of the pandemic, buprenorphine prescribers quickly transitioned to providing telemedicine visits in high volume; nonetheless, there are still many unknowns, including the quality and safety of widespread use of telemedicine for OUD treatment.