Funded Projects

Recently, concerns have been voiced that medications to treat opioid use disorder (OUD) may contribute to dental problems, including cavities and tooth loss. These concerns may contribute to barriers preventing use of these medications. A better understanding of the effects of these medications on oral complications is critical. This project will use national databases to link dental, medical, and pharmacy claims data for Medicaid- or commercially-insured new users of various medications for OUD to determine and compare oral health outcomes. The project will also examine the perspectives and experiences of people with OUD on oral health.

The number of women misusing opioids during pregnancy has more than quadrupled in recent years, with fentanyl use rising to an all-time high. The exposure puts the fetus at serious risk for opioid withdrawal, as well as developmental and behavioral effects during infancy and childhood. This project will study the effects of fentanyl use during pregnancy on maternal physiology and stress, function of the placenta, pregnancy outcomes, as well as infant withdrawal symptoms, development, and stress. This research aims to identify new strategies for diagnosing, treating, and preventing opioid harm to the fetus and mother.

Chemokines (hormones of the immune system that mediate innate immune inflammation) enhance pain, reduce opioid analgesia, and promote drug-seeking behavior and addiction, giving them a central role at the crossroads of chronic pain and the opioid crisis. Blocking chemokines (rather than opioid receptors) provides an exciting treatment opportunity for both pain and opioid use disorder. This research continues previous work studying the efficacy of RAP-103, a small, orally stable chemokine receptor blocker. The previous research has shown that RAP-103 is safety and effective in preclinical models that mimic human drug-taking. This research will now optimize the dose required to achieve decreased motivation to maintain opioid use, establish manufacturing scale-up feasibility, provide RAP-103 for safety testing in animals, and conduct stability testing of RAP-103 toward the goal of submitting an Investigational New Drug application to the FDA.

Pain in the muscles and surrounding connective tissue (myofascial pain) is a significant and poorly understood health concern affecting hundreds of millions of Americans. There is a great need for tools to assess changes to myofascial tissues in individuals with chronic pain as well as to measure the effect of commonly used therapies. This project will use three imaging tools to look at differences between shoulder tissue in people with myofascial pain compared to those without pain. Using a machine learning approach, this research aims to develop a biomarker signature for myofascial pain, which will be evaluated in a randomized controlled clinical trial based on its ability to predict patient responses to myofascial pain treatments.

MNK-eIF4E signaling is activated in nociceptors upon exposure to pain or peripheral nerve injury, promoting cytokines and growth factors and increasing nociceptor excitability, which leads to neuropathic pain. Genetic or pharmacological inhibition of MNK signaling blocks and reverses nociceptor hyperexcitability as well as behavioral signs of neuropathic pain. A clinical phase drug for cancer shows strong specificity as an MNK inhibitor but requires optimization because MNK inhibition in the central nervous system (CNS) may lead to depression, an unacceptable side effect for a neuropathic pain drug. The research team plans a targeted medicinal chemistry and screening campaign directed at generating a MNK-inhibitor-based neuropathic pain treatment with the goal of restricting its CNS penetration while retaining potency, specificity, and in vivo bioavailability and efficacy.

Many states across the country have experienced an increase in children involved in the foster care system because of young parental opioid and methamphetamine use disorders (OUD; MUD). The Families Actively Improving Relationships (FAIR) program is a recently developed, rigorously evaluated, intensive outpatient treatment program for parents involved in the child welfare system for parental OUD and/or MUD. The FAIR effectiveness trial showed the potential for FAIR to be adapted as a prevention program, and to be implemented in counties with low service availability and access. This project will adapt and implement FAIR for prevention in collaboration with Oregon State Department of Human Services (DHS). Across two counties, parents referred by DHS for OUD or MUD with risk for escalation will be recruited and randomized to receive the adapted FAIR as prevention, or standard case management and referral. Outcomes will inform further FAIR refinement and potential broader scale-up.

Social determinants of health are individual and environmental factors that affect health, the ability to function, and quality of life. This project will study the impact of the family-focused Families Actively Improving Relationships (FAIR) prevention intervention currently offered in rural Oregon counties to parents experiencing substance use and mental health challenges. Through the FAIR program, participants receive substance use treatment services; mental health treatment services; parent management training; and support to access employment, housing, education or to mitigate exposure to violence and discrimination. This research will examine how the FAIR intervention affects substance use and societal determinants of health, toward informing payors and decision makers about the cost and value of FAIR prevention services in rural communities.

Neuropathic pain conditions are difficult to treat, and novel non-narcotic analgesics are desperately needed. The G protein-coupled receptor 160 (GPR160) has emerged as a novel target for analgesic development, as GPR160 in the spinal cord may play a role in the transition from acute to chronic pain. Cocaine- and Amphetamine-Regulated transcript peptide (CARTp) was identified as a ligand for GPR160. Blocking endogenous CARTp signaling in the spinal cord attenuates neuropathic pain, whereas intrathecal injection of CARTp evokes painful hypersensitivity in rodents through GPR160-dependent extracellular signal-regulated kinase (ERK) and cyclic AMP response element-binding pathways (CREB). This project will isolate and biochemically characterize GPR160 and establish methods for biochemical characterization of GPR160 interaction with CARTp activator. Researchers will miniaturize and optimize biochemical assay and scale up protein production for future high throughput biochemical screening to identify potent inhibitors of GPR160 activation. These studies are critical for defining the molecular mechanism of CARTp/GPR160 interactions and initiating large-scale screens for new inhibitors to develop novel therapeutics.

Although there are effective prevention and treatment programs and services to address opioid misuse, opioid use disorder (OUD), and overdose, gaps remain between those needing and those receiving prevention and treatment, in part because of a need to better understand how to make these programs and services most effective at a local level. The National Institutes of Health (NIH) and the Substance Abuse and Mental Health Services Administration (SAMHSA) launched the HEALing Communities Study to generate evidence about how tools for preventing and treating opioid misuse and OUD are most effective at the local level. This multisite implementation research study will test the impact of an integrated set of evidence-based practices across health care, behavioral health, justice, and other community-based settings. The goal of the study is to reduce opioid-related overdose deaths by 40 percent over three years. Boston Medical Center is partnering with academic institutions in three other states to study the impact of these efforts in 67 highly affected communities. The study will also look at the effectiveness of coordinated systems of care designed to increase the number of individuals receiving medication to treat OUD, increase the distribution of naloxone, and reduce high-risk opioid prescribing.

Osteoarthritis (OA) is the most common form of arthritis and a leading cause of pain and disability. Current challenges of managing OA are that there is no OA disease-modifying drug available, there are few effective treatment strategies, and there is an over-reliance on the use of opioids to manage OA-related joint pain. This project aims to validate vascular endothelial growth factor receptors 1 and 2 (VEGFR 1 receptor = Flt1) and (VEGFR 2 receptor = Flk1) as novel therapeutic targets for OA. This is based on a hypothesis that blocking these two specific receptors of VEGF will inhibit cartilage tissue degeneration and alleviate pain symptoms. This study will test the role of VEGFR-1 and -2 in multiple OA animal models using multiple available VEGF inhibitor molecules. The findings from these studies will develop a rationale for future clinical trials to target VEGFR-1 and -2 for OA patients and develop a novel non-addictive treatment for both joint pain and OA pathology.

Endometriosis is a gynecologic disorder characterized by severe pelvic pain, affecting 10% of reproductive aged women and adolescents worldwide. These individuals are at an increased risk for chronic opioid use, dependence, and overdose. Adolescents and young adults in particular are understudied in endometriosis research. This project will conduct a longitudinal study of adolescent endometriosis. The research will identify novel biomarkers and biological pathways involved in the transition of acute to chronic pain. The research aims to improve non-surgical endometriosis diagnosis, risk, and treatment. 

Cataract surgery is commonly performed in older adults; however, some patients subsequently experience chronic eye pain that is difficult to treat. One promising approach that is effective in some, but not all, patients uses the patient's own serum (a component of blood) as eye drops. This project seeks to identify markers that can help predict which patients will respond to serum treatment and monitor their progress. Using advanced technology and data analysis to evaluate patient histories, questionnaires, and different genetic and other molecular characteristics in the eyes and serum it aims to identify potential markers that can then be tested in a clinical study.

This project creates the HEAL Data2Action Modeling and Economic Resource Center that will conduct research as well as support the HEAL Data2Action Innovation Projects with expertise and consultation about simulation modeling and economic evaluation methods. The consultation service will advise on how to select and use various research methods, including economic evaluation, simulation modeling, advanced statistical analysis, behavioral economics, treatment program organization research, and cost analysis. The center will use a dynamic simulation model of opioid use disorder to enhance data-driven decision making. The center will also provide online training resources, tools, and other resources to assess a variety of economic aspects related to the HEAL Data2Action Innovation Projects.