Funded Projects

An extensive literature provides compelling evidence that selective antagonists or negative allosteric modulators (NAMs) of the metabotropic glutamate (mGlu) receptor, mGlu5, have exciting potential as a novel approach for treatment of multiple pain conditions that could provide sustained antinociceptive activity without the serious adverse effects and abuse liability associated with opioids. Researchers have developed a novel series of highly selective mGlu5 NAMs that are structurally unrelated to previous compounds, have properties for further development, and avoid the formation of toxic metabolites that were associated with previous mGlu5 NAMs. Based on existing preclinical models, as well as clinical trial data showing efficacy of an mGlu5 NAM in migraine patients, researchers anticipate that their compounds will have broad-spectrum analgesic activity in patients with a variety of chronic pain conditions.

Negative allosteric modulators (NAMs) of the metabotropic glutamate (mGlu) receptor, mGlu5, have shown promise for treatment of multiple pain conditions without the serious adverse effects and safety concerns associated with opioids. This project will develop and test a novel series of highly selective mGlu5 NAMs that are structurally unrelated to earlier failed compounds and do not form toxic byproducts as with previous mGlu5 NAMs. A lead candidate is now being characterized in several studies to assess readiness for testing in Phase I clinical studies.

This project will develop PIDA, which will allow researchers to measure the activity of pain-sensitive human neurons in response to pain stimuli and potential pain treatments. The tool will use automated digital microscopes in the absence or presence of a potential pain medication. Since this tool contains human neurons, it may be more effective at predicting the efficacy of potential pain drugs in human patients than the animal models that are currently used.

Chronic pain is a persistent source of disability and reduced quality of life for aging adults. Chronic pain-related outcomes are disproportionately worse for aging African Americans, who report greater pain severity and worse pain-related disability compared to White peers. A significant pain risk factor for African Americans is chronic stress (including family-related stress), which is worsened by structural inequities that affect this population. Although many African Americans identify family support as critical for pain self-management, this influence has not been studied thoroughly. This project will study how pain conditions develop and persist for aging African Americans by analyzing existing data from African American participants in two large aging studies: Midlife in the U.S. (721 participants) and the Health and Retirement Study (2,698 participants). The research aims to determine how family emotional climate affects pain risk, taking into account structural factors like discrimination, socioeconomic disparity, and the influence of various neighborhood settings.

While traditional epidural spinal cord stimulation (SCS) for intractable pain has been very efficacious for the patients responsive to it, the success rate has held at approximately 55%. Dorsal root ganglion (DRG) stimulation has shown promise in early trials to provide greater pain relief. Although the decrease in back pain at 3 months was significantly greater in the DRG arm vs. SCS, the adverse event rate related to the device or implant procedure was significantly higher in the DRG arm. Researchers will develop the “Injectrode” system to make the procedure simpler and safer by using an alternative to implantation: using an injectable pre-polymer liquid composite that cures quickly after injection adjacent to the DRG. They will compare an Injectrode-based system with traditional electrode stimulation at the DRG as an alternative to opioid administration. Researchers will perform benchtop characterization and refinement as a precursor to a clinical study, use modeling and animal testing to refine the efficiency of energy transfer from a transcutaneous electrical nerve stimulation unit to an Injectrode/Injectrode collector concept, and optimize the procedure for the complex anatomy of the human DRG.

The first ten years of life are accompanied by rapid changes to the developing brain and cognitive abilities. Complex interacting factors including genetics, early-life exposure to substances, family and social interactions, and home and community environments can affect brain and cognitive development. Three linked projects aim to develop effective research protocols to lay a foundation for a future HEALthy Brain and Cognitive Development (HBCD) birth cohort study. Project 1 will develop protocols for recruitment and retention of a diverse sample of pregnant and postpartum women with oversampling of mothers with prenatal opioid use. Project 2 will identify ethical, legal, and regulatory challenges for investigations in this vulnerable population and define effective solutions to enable recruitment and study of these participants. Project 3 will develop and evaluate protocols for acquiring high-quality, quantitative neuroimaging measures with magnetic resonance imaging and functional near infrared spectroscopy and assess effective strategies for measuring cognitive performance in young children, including those exposed to opioids.

Research is needed to better understand how to make life-saving harm reduction services more accessible to populations that are hard to reach. This project will identify the physical and psychological factors that make harm reduction services most effective. The findings will then be used to inform the development, implementation, and testing of an innovative strategy consisting of several internet- and smartphone-based tools designed to improve access to harm reduction services for people who are hard to reach. 

People who survive sexual violence are at increased risk for posttraumatic stress disorder (PTSD) and opioid misuse. Emergency departments are often the first, and in some cases only, contact with the medical care system for survivors of sexual violence. This makes them a suitable setting to initiate interventions to address the risk of PTSD and opioid misuse in these individuals. This project will develop and test a brief, low-cost video and text message intervention that can be initiated in the emergency department to prevent onset or escalation of PTSD and opioid misuse among people who survive sexual violence.

Opioid use during pregnancy is associated with significant harmful health outcomes for infants including preterm birth, neonatal opioid withdrawal syndrome (NOWS), and impaired brain-related problems. Not all infants exposed to opioids develop NOWS, and there is a need for better diagnostic tests. This project will study specialized cell structures called vesicles that are released from the placenta, fetal brain, and central nervous system to communicate information about health of the fetus and placenta. This research on vesicles will be combined with data about NOWS diagnosis up to 1 month after birth. The research aims to generate molecular indicators (biomarkers) that predict which newborns develop NOWS, toward guiding safe and effective treatment for these newborns.

This project will use a data-to-action framework to guide implementation of opioid use disorder treatment and harm reduction interventions based on rapid data analysis. It will leverage existing data systems such as Emergency Medical Services (EMS) reports, mobile integrated health case management data, and medical examiner data for near real-time data analyses, visualization, and action planning. This research will collect a range of data (opioid treatment, use of acute care services, morbidity, mortality, incarceration, housing support, and cost benefits) from a sub-acute stabilization center for people at high risk for opioid overdose, including those who have recently overdosed and are referred and transported by EMS teams.

People who use opioids in rural areas suffer worse health and less insurance coverage. The opioid problem in rural areas is of particular concern, as rural areas have higher overdose rates despite equivalent rates of OUD. This is because rural areas have a scant number of clinics and clinicians who provide medication treatment for OUD. Thus, people living in rural areas must travel long distances to access clinics that may or may not have expertise in providing treatment to patients with OUD. Telemedicine (TM) could efficiently increase capacity for delivery of buprenorphine in rural areas and may increase the number of patients receiving medication treatment and improve treatment retention and outcomes. While the development of medication treatments for opioid use disorder (MOUD) capacity in primary care settings with optimal/comprehensive services is desirable, the current opioid crisis with escalating overdose death rates in rural areas suggests a need to implement an efficient, cost-effective system of MOUD services that can be scaled up quickly. The use of a centralized and Medicare-covered TM vendor utilizing a developed methodology and established organizational infrastructure offers the great potential for a rapid rollout to increase access to MOUD and improve treatment retention in rural areas. This cluster randomized clinical trial with two phases will test expanded treatment access to improve retention on MOUD in highly affected rural areas. Phase I will include implementing telemedicine in a limited number of rural sites with varying levels of office-based opioid treatment (OBOT) to inform implementation strategies for the main trial, and Phase II will include evaluate comparative effectiveness between OBOT alone and OBOT + TM at 30 sites.