Funded Projects

Polysubstance use, especially use of both opioids and stimulants, is compounding the already devastating effects of the opioid crisis in underserved rural areas. This project builds on a previously established treatment model for opioid use disorder that uses telehealth and mobile treatment units, which seeks to engage people in activities they enjoy, to help them avoid negative behaviors such as drug use. This research will evaluate the effectiveness of a behavioral treatment approach delivered by peer recovery support specialists in rural areas and using mobile treatment units. The project will measure the intervention’s effect on treatment retention and polysubstance use – as well as evaluate the intervention’s feasibility, acceptability, adoption, and economic value.

Little is known about what motivates people to use multiple drugs. Understanding these factors is important for tailoring treatment services. Behavioral economic theory, which determines how much value individuals assign to drugs and potential negative consequences, provides a framework to understand the choices people make. This project will identify patterns, motivating factors, and long-term trajectories of opioid-involved polysubstance use behaviors and treatment. This research will use a range of methods to analyze substance use episodes as well as examine motives and preferences associated with polysubstance use behaviors and how they change over time. The findings will be combined into a toolkit to inform timing, type, and tailoring of interventions and policies to guide implementation of effective clinical strategies and policies for managing polysubstance use in healthcare systems.

Although methadone is an effective treatment for opioid use disorder, many individuals drop out of treatment, putting them at risk of relapse and overdose. One of the factors associated with poor retention in methadone treatment is concurrent cocaine use. There is currently no effective medical treatment for cocaine use disorder. However, contingency management, in which individuals receive tangible rewards for desired behaviors such as abstinence, has been shown to be effective for cocaine use. This project will test the value of a digital therapy app, DynamiCare Health Contingency Management, in methadone treatment programs to promote treatment for polysubstance use.

Effective overdose prevention requires timely, location-specific data to efficiently direct resources and interventions as well as to inform healthcare policy. However, rarely is such information available, resulting in responses that are frequently too late. This project will partner with local government agencies from Los Angeles County, California, to rapidly acquire and analyze information in near real-time from multiple sources to identify overdose hotspots and determine overdose metrics. This information will be used to develop a publicly available Rapid Overdose Surveillance Los Angeles online dashboard with built-in analytics. The dashboard will help determine the scope and specifics of overdose and opioid use in Los Angeles County to help target response and guide mobile addiction treatment and harm reduction services.

People who use drugs often have other medical problems that cause them to visit an emergency department frequently. This project will develop and test an intervention aimed at reducing health risk among Black people who use drugs that visit an urban emergency department for care. The intervention will be delivered by people with lived experience of drug use and tailored to meet the unique needs of Black people who use drugs.

There has been a substantial increase in overdose deaths among Black and Hispanic/Latino people who use drugs. This project will test and evaluate delivery of harm reduction services from a mobile van. A community-based care coordinator will assess the specific needs of each participant (such as housing, food assistance, and mental health treatment) toward the goal of linking each person to appropriate services.

This project will evaluate a previously developed harm reduction intervention that addresses the needs of women who use drugs in an urban environment. The approach uses a mobile van to offer naloxone, fentanyl test strips, and other harm reduction supplies – along with necessities such as food and clothing, brief trauma-informed counseling, and referrals to drug treatment, medical care, and social services. This research aims to test the impact of an intervention that may increase access to harm reduction services for women, as well as assess how to put it into place.

The lack of timely data about drug use and overdose deaths has hindered the ability of communities and state agencies to allocate resources to regions where they are most needed. This project will develop a secure data pool that combines individual and community-level real-time data from multiple sources, including urine drug testing. These data will then be used to model the contribution of opioid, cocaine, and stimulant use to overdoses, overdose deaths, and cases of substance use disorder. This research will also use urine drug testing results and demographic/contextual data to identify populations and subpopulations at highest risk of drug use and overdose. This information will be displayed through a data platform tailored to the needs of end users (e.g., communities or agencies) and with user-friendly tools that help users make informed decisions on where resources are most urgently needed.

Compared to people with stable housing, individuals experiencing homelessness are more likely to use both fentanyl and stimulants and experience drug-related harms. This project will examine fentanyl-stimulant polysubstance use patterns and how they evolve over time in response to changes to housing status. It will also assess use of overdose prevention and substance use disorder treatment interventions in homeless individuals who use both fentanyl and stimulants, including how polysubstance use patterns shape their risk of overdose over time. This research will also interact with community stakeholders toward translating the findings into future research, policy, and program recommendations.

While some people who use drugs do not carry or use naloxone, others respond to multiple overdoses over short periods of time. This project aims to identify characteristics and experiences of these individuals, known as “overdose responders,” toward better understanding barriers to naloxone use. The research will also test interventions to support the well-being of responders and to increase the number of community members ready and willing to give naloxone to reverse overdose. 

Timely and accurate surveillance of fatal and non-fatal overdoses is necessary in light of the worsening overdose crisis, but data is rarely available in real-time. Tracking non-fatal overdoses is especially important because patients who overdose once are likely to experience additional and potentially fatal overdoses. This project aims to increase the quality and timeliness of non-fatal overdose data estimates by analyzing clinicians’ notes rather than clinical codes from emergency department and emergency medical services records. The datasets and models produced from this research will be used to build an interactive dashboard with up-to-date, county-level overdose-surveillance estimates for use by Kentucky first responders to aid in rapid allocation of resources.

Decreasing opioid dosing faster than advised by clinical recommendations often leaves chronic pain unaddressed and may increase the risk of overdose and suicide compared to continuing long-term opioid treatment. Continued, long-term use of opioids after surgery by individuals who use opioids increases the risk of postoperative complications, opioid use disorder, and death. Surgery is a critical point-of-care moment for health care providers to interact with patients who use opioids about continued opioid use when harms outweigh benefits. This project will test of the Motivational Interviewing and guided Opioid Tapering support (MI-Opioid Taper) strategy, with or without a medication that reduces anxiety and relieves pain, at four geographically diverse hospitals across the nation.

Mismanagement of orofacial chronic pain, such as temporomandibular joint and muscle disorders (TMJD) and oral cancer, substantially contributes to opioid overuse; overdose-related deaths; and cardiovascular, renal, and neurological complications at epidemic proportions. The current paradigm implies that orofacial conditions could trigger maladaptation of the immune system and plasticity supporting persistent inflammation, which influences the development and maintenance of orofacial chronic pain. LIGHT (TNFSF14) and Lymphotoxin-beta (LT?), members of the tumor necrosis factor superfamily, provide a balance between protective immunity and immunopathology during chronic inflammatory diseases. This project will test the hypothesis that targeting LIGHT and LT? signaling could prevent the development and inhibit the maintenance of chronic pain produced by TMJD and oral cancer, via peripheral mechanisms involving plasticity of immune, stromal, and tumor cells, as well as sensory neurons. The proposed research is significant as it advances our understanding of mechanisms regulating the development and maintenance of orofacial pain and offers new therapeutic targets and an immunotherapeutic approach for preventing and blocking chronic pain during TMJD and oral cancer.