Funded Projects

For individuals with moderate to severe opioid use disorder (OUD), medication-assisted treatments (MATs) such as oral methadone and extended-release naltrexone (XR-NTX) are the gold standard in initiating and maintaining long-term recovery. Still, many patients struggle with persistent sleep disturbance and stress reactivity in the early stages of recovery, which drive relapse behaviors. This proposal constitutes a novel mechanistic approach to understanding the role of the orexin system in sleep disturbance and circadian rhythms of stress in OUD patients who are maintained on MATs and are early in recovery. This study will determine whether the FDA-approved sleep medication suvorexant (SUVO) improves sleep continuity and decreases diurnal measures of stress, and whether improvement of sleep/stress processes translates to improved OUD treatment outcomes. Its findings will fill critical gaps in our understanding of the role of the orexin system in sleep disturbance and circadian rhythms of stress that impact OUD recovery.

Chronic opioid use has well known effects on sleep quality, including disordered breathing during sleep and other abnormalities related to circadian rhythms. However, little is known about the relationship between sleep-related symptoms and non-medical opioid use among individuals being treated for opioid use disorder. This longitudinal study aims to identify biological pathways that may account for these associations. The research will first determine associations of sleep and proxy measures of circadian rhythms with non-medical opioid use. Second, they will investigate emotional processes associated with sleep/circadian symptoms and opioid treatment outcomes.

Mortality and morbidity related to suicidal behavior and opioid use disorder (OUD) have increased significantly over the past decade. These two public health crises are intertwined at multiple levels. Medications for OUD, especially buprenorphine, have been shown to decrease opioid use and reduce the multiple negative consequences of OUD, including fatal and nonfatal overdose, criminal justice involvement, infectious complications, and misuse of other substances. In addition, small randomized trials of buprenorphine treatment in treatment-resistant depression (with or without co-occurring OUD) suggest that buprenorphine reduces depressive symptoms and suicidal ideation. This large study will evaluate the effects of starting buprenorphine treatment on self-harm and suicide attempt among people with opioid use disorder, including those with and without co-occurring mental health conditions or other known risk factors for suicidal behavior. Comprehensive health records data from four large health systems serving a combined member/patient population of approximately 11 million will be examined for the overall effect of buprenorphine treatment on subsequent self-harm or suicide attempt, including differences in effects between patient subgroups and specificity of effects to buprenorphine vs other medications.

Despite psychopathology robustly increasing the risk for later substance use disorders (SUD), remarkably few studies have examined the impact of treating psychopathology on reducing rates of opioid use disorder (OUD), nicotine, and SUD. The main aims of this study are to implement a pragmatic set of office-based instrumentation using patient related outcome measures linked to electronic health records (EPIC) for intake and follow-up assessments to evaluate psychopathology, OUD, nicotine use disorder, and other SUDs in young people aged 16-30 years old who are receiving psychopathology treatment as part of routine outpatient clinical care. The study will also examine similar age patients with non-opioid SUD in outpatient SUD treatment settings to examine the impact of treatment in mitigating the development of OUD. Data derived from this study will help inform clinical guidelines and public health policy and provide important secondary outcomes for further work on the prevention of OUD, nicotine use disorder, and other SUDs in relation to early-onset psychopathology.

This study will (1) test pharmacologic and behavioral strategies to improve OUD pharmacotherapy treatment retention and to improve outcomes among patients who have been successfully stabilized on OUD medications and want to stop medication and (2) identify predictors of successful outcome and develop a stage model of relapse risk.

Profound sleep disturbances during abstinence have long been suspected of perpetuating vulnerability to relapse of people who misuse or are addicted to opioids. An animal model has shown that long-term sleep deficiency results in a persistent state of physiological dysregulation that is expected to modify the biology of abstinence and increase relapse potential. This study seeks to discover how persistent sleep restriction during withdrawal from opioid use increases vulnerability to relapse in the animal model by testing whether persistent sleep restriction during abstinence from opioid use is sufficient to increase opioid drug seeking. The functional outcome measure will be the degree of mitigation of opioid seeking. These studies will provide a basis for novel translational approaches to target mechanisms that are demonstrated to cause increased vulnerability to relapse.

This study will (1) test pharmacologic and behavioral strategies to improve OUD pharmacotherapy treatment retention and to improve outcomes among patients who have been successfully stabilized on OUD medications and want to stop medication and (2) identify predictors of successful outcome and develop a stage model of relapse risk.

According to SAMHSA’s 2017 National Survey on Drug Use and Health (NSDUH), 11.4 million persons in the U.S. report past-year opioid misuse; out of them, only 2.1 million individuals met criteria for an OUD. Very little is known about efficacious interventions for those who do not meet criteria for moderate/severe OUD (i.e., subthreshold OUD). The prevalence of subthreshold OUD in primary care settings is 5 percent to 10 percent, with higher rates (21 percent to 29 percent) among those receiving prescribed opioids. Although they are at high risk of developing moderate/severe OUD and/or dying from an overdose, little or no empirical evidence exists for pragmatic prevention interventions that can be adopted at integrated general medical settings. To study the efficacy of prevention interventions to arrest the progression from risky opioid use, researchers will test the efficacy of a STOP intervention in primary care settings. STOP adopts an early intervention approach, based on a collaborative care model to prevent progression to moderate/severe OUD, and consists of a practice-embedded nurse care manager who provides patient education and supports the primary care provider (PCP) in engaging, monitoring and guiding patients who have risky opioid use; brief advice delivered to patients by their PCP; and phone counseling of patients by behavioral health providers to motivate and support behavior change. Researchers will determine whether STOP reduces risky opioid use and examine the impact of STOP on progression to moderate/severe OUD, overdose risk behavior and overdose events in adults with risky use of illicit or prescription opioids.

Abuse of opioids constitutes a national public health crisis. Data from the Lummi Nation show that for the 18 Tribal member deaths occurring in the first seven months of 2016, five were opioid related, with the average age of the deceased being 29 years. The proposed Native Transformations Opioid Project (NTOP) seeks to develop research capacity at Northwest Indian College and its surrounding tribal communities to develop effective and culturally congruent strategies to reduce the burden of death from opioid and other drug-related overdoses in tribal communities in the Pacific Northwest. The primary aim of the proposed project is to identify the strengths and behavioral strategies in successful recovery from OUD in three Coast Salish communities. The ultimate goal of the proposed research is to identify Coast Salish recovery factors from OUD to develop a data-driven, culturally congruent intervention to reduce OUD and OUD overdose deaths.

Evidence suggests that homeless youth have the highest rates of opioid use among youth subgroups in the country (Brands et al., 2005). Resolution of youth homelessness through housing and prevention services, often referred to as “Housing First”, has great potential to reduce the likelihood for the development of an opioid use disorder as well as other problem behaviors associated with living on the streets. However, only 20 percent to 30 percent of homeless youth samples report ever having stayed at a crisis shelter, 9 percent report having ever accessed mental health services, and 15 percent report ever having received treatment for substance use disorder (Ray, 2006), indicating a need to reach and engage youth in services that are feasible and acceptable. The results of this study will provide essential information for researchers and providers on the efficacy of housing plus opioid and related risk prevention services in a randomized controlled trial on opioid use, how moderators affect the response, and mechanisms underlying change.

Providing housing and prevention services (often referred to as “housing first”) has great potential to prevent opioid use disorder, continued homelessness, and other problem behaviors among youth experiencing homelessness. However, implementation of these services is challenging because criminal justice system involvement (which is common in this population) often prevents or delays access to housing. This project will explore interactions between criminal justice system involvement and the housing first intervention, toward reducing risks for opioid use and death among justice-involved youth experiencing homelessness

Homeless youth have high rates of alcohol and drug use, comorbid mental health conditions, and are at high risk for suicide. However, few preventive interventions have been proven for reducing substance use or addressing suicide among homeless youth. Resolution of youth homelessness through housing and prevention services, often referred to as ?Housing First? (HF), will be tested in the HOME (Housing, Opportunities, Motivation and Engagement) study, which aims to reduce opioid use and progression to opioid use disorder (OUD). This study will include suicide screening, treatment, education and prevention (STEP) to the model to examine whether HF provides secondary benefits for reducing suicidal ideation and behaviors among high risk homeless youth. STEP includes ongoing suicide screening procedures and Cognitive Therapy for Suicide Prevention (CTSP) for those at high risk for suicide. Youth (N=240) will be randomly assigned to receive HF + STEP + opioid and related risk prevention services (strengths-based outreach and advocacy; HIV Prevention; and motivational Interviewing) or to receive STEP + opioid and related risk prevention services, alone. Results from this study will inform the design and implementation of other national models of HF to address prevention of substance use and suicidal ideation and behaviors among homeless youth.

Current rates of prescription opioid misuse are rising to epidemic levels among adults. These rates may be even higher among adolescents and young adults (AYAs), who have elevated levels of substance exploration and misuse during this precise developmental period. AYAs who are exposed to opioids via legitimate prescriptions by age 18 are at increased risk for misuse after high school. However, there is a substantial gap in our knowledge of what factors might contribute to the development of misuse and related poor outcomes in these high-risk youth. Identifying factors that convey risk for increasing opioid use and problematic use would inform AYA models of opioid abuse and inform the development of preventive interventions to modify risk in medical settings, which are a unique point of entry into opioid use, and a key setting in which to examine AYA outcomes. We will use a developmental model of the impact of opioid exposure by legitimate prescription during late adolescence, with consideration for pain and psychological characteristics of the individual within the psychosocial (family, peer, educational and work context). Determining mechanisms and moderators of risk during this developmental transition will provide critical information for the design of interventions aimed at reducing opioid use disorders in at-risk AYA.