Funded Projects

Given the severity of the current opioid crisis, there is a pressing need to maximize the effectiveness of our interventions and increase retention in medication for opioid use disorder (MOUD) treatment. Measurement-based care (MBC), in which patient progress is regularly and systematically assessed to aid in treatment decisions, is a promising approach. Assessment tools are needed that can be administered quickly and that yield information that can be used to suggest improvements in treatment. In this study, the Investigator will conduct a series of analyses with data from the Brief Addiction Monitor (BAM), which has been selected for a national MBC initiative within the Veterans Administration. The goal of the work will be to derive and validate two new scales from the BAM. One scale is intended for use in opioid use disorder (OUD) specialty care programs. The second version is intended for use in primary care–based MOUD.

The objective of the Early Phase Pain Investigation Clinical Network (EPPIC-Net) and EPPIC- Net initiatives is to rapidly and efficiently translate advances in the neurobiology of pain into treatments for people with chronic and acute pain, conditions associated with a significant burden to both patients and society. The Clinical Coordinating Center (CCC) for EPPIC-Net will promote and facilitate, from initial conception through final analysis, clinical trials in adult and pediatric populations with acute or chronic pain by providing efficient methodological, organizational, and logistical support. The EPPIC-Net-CCC will adopt and establish processes aimed at dramatically increasing the efficiency of multicenter clinical trials, improving the overall quality of clinical trials, promoting patient recruitment and retention as well as increasing the number of clinical investigators and research staff well trained and passionate about leading and conducting multicenter clinical trials.

Neuropathic pain is characterized by neuronal hyperexcitability and spontaneous activity, properties associated with activity of hyperpolarization-activated, cyclic nucleotide-regulated (HCN1-4) channels, the source of the pacemaker current, Ih. Inhibition of HCN1-mediated Ih elicits marked antihyperalgesia in multiple animal models of neuropathic pain, including models for direct nerve injury and chemotherapy-induced peripheral neuropathy, and does so with little or no disruption to either normal pain processing or baseline behaviors and activities. The overall objective is to develop a peripherally restricted HCN1 inverse-agonist as a therapeutic for neuropathic pain. Researchers have generated a novel small molecule that combines an antihyperalgesic HCN1 inhibitor with a motif that controls distribution and membrane presentation and is a potential non-opioid antihyperalgesic treatment for peripheral neuropathic pain.

This study will determine the feasibility of a multifaceted approach to recruitment of normal and high-risk pregnant women and their children. Three inter-related tasks will support this comprehensive feasibility study. First, an interdisciplinary summit will occur early in the study focused on how best to mitigate risks and maximize benefits to children and families recruited in a future cohort. Second, the feasibility of a multi-faceted recruitment strategy will be assessed. Third, select pregnancy and birth assessments will be collected from recruited participants in this feasibility study while leveraging data across early childhood from existing resources, to inform Phase II study planning. This Phase I of the FL-DECADE study will provide valuable planning and feasibility data to be used for the national efforts to build a large, prospective cohort.

There is a compelling need to develop a front line, non-opioid-based acute pain management strategy for outpatient oral surgical procedures. LaunchPad Medical has developed Tetranite® (TN), a novel bone regenerative mineral-organic self-setting adhesive biomaterial. TN has been extensively studied in vivo in a canine jaw model and shown to be effective and well-tolerated. In this project, researchers will demonstrate that drug-loaded TN can be a novel route to providing localized and time release pain medication following wisdom tooth extraction by determining the release profile of various pain medications from TN at different concentrations. The ability to release pain therapeutics in a controlled fashion and directly at the site of injury offers improved pain control following oral surgical procedures without exposing the patient to opioids. This novel approach to pain management can be extended to more invasive orthopedic procedures such as joint replacement, spinal fusions or reconstructive trauma surgery. In Phase II the team will conduct an in vivo study to assess efficacy of medicated TN to address post-operative pain following wisdom tooth odontectomy, optimize incorporation and release of medications in TN formulations, develop cGMP manufacturing process for the compounded product, and ultimately conduct clinical trials for bone void filler using medicated TN.

This project proposes to develop novel Gpr151 antagonists to facilitate long-term abstinence in opioid-dependent individuals. Gpr151 is an orphan G-protein coupled receptor that is expressed almost exclusively in the medial habenula and co-localizes with ?-opioid receptors to regulate the inhibitory effects of opioids on habenular neurons. Mice with a null mutation in Gpr151 (Gpr151-/- mice) are resistant to the stimulant and rewarding effects of opioids and self-administer lower quantities of oxycodone. Based on this preliminary work, the study will seek to identify Gpr151 antagonists through a variety of methods and optimize them for potency, selectivity, drug metabolism, pharmacokinetics, and brain penetration properties. The study will evaluate effects of those with the most favorable drug-like physiochemical properties on electrophysiological responses of medial habenula to opioid drugs and assess the in vivo efficacy of these novel antagonists in wild-type and Gpr151-/- mice.

Maternal use and addiction to opioids or other drugs has resulted in an unprecedented rise in drug withdrawal complications in newborns known as neonatal abstinence syndrome (NAS). While there is no accepted standard for treating NAS, non-pharmacological bundles are recommended as an initial course of treatment. Unfortunately, non-pharmacological care (swaddling, rocking, frequent feedings, and skin contact) require significant use of human resources. This project studies the technical feasibility of a stochastic vibrotactile stimulation (SVS) technology incorporated into the hospital bassinet pad, which provides gentle vibrating sensory stimulation to soothe infants with NAS. Building on preliminary evidence that this type of stimulation calms NAS infants without altering their sleep, this study aims to develop a commercially viable bassinet pad that could be used in a hospital setting.

A more than 5-fold increase in the incidence of neonatal abstinence syndrome has been reported since 2000. Preliminary studies show that prenatal opioid exposure is associated with increased risk of impaired neurodevelopment. Five institutions (Duke University, Arkansas Children’s Research Institute, Cincinnati Children’s Hospital, University of Illinois at Urbana–Champaign, and University of North Carolina at Chapel Hill) have formed a consortium to develop strategies for the Phase II HEALthy Brain and Child Development Study. Research teams will develop instruments and strategies (recruitment/retention protocols, assessment batteries, and novel tools); conduct pilot studies (fetal and postnatal imaging, advanced imaging harmonization and quality control, assessment administration, biosampling) to evaluate instruments; and analyze available data, including imaging, behavioral, cognitive, and maternal data from studies on early brain development, to guide the Phase II study design. Upon completion, the consortium aims to conduct the Phase II study.

Despite the significance of spine disorders, there are few reliable methods to determine appropriate patient care and evaluate intervention effectiveness. The research and tool development take the critical next step in the clinical translation of faster, quantitative magnetic resonance imaging (MR) of patients with lower back pain. The multidisciplinary Technology Research Site (Tech Site) of BACPAC will develop Phase IV (i.e., technology optimization) technologies and/or methods (TTMs) to leverage two key technical advancements: development of machine learning-based, faster MR acquisition methods and machine learning for image segmentation and extraction of objective disease related features from images. The team will develop, validate, and deploy end-to-end deep learning-based technologies (TTMs) for accelerated image reconstruction, tissue segmentation, and detection of spinal degeneration to facilitate automated, robust assessment of structure-function relationships between spine characteristics, neurocognitive pain response, and patient-reported outcomes.

In order to address the opioid crisis, this group has developed a candidate heroin/opioid vaccine that induces antibodies that bind heroin/opioid upon injection and subsequently prevent the drug from crossing the blood-brain barrier and interacting with the brain's µ-opioid receptor. They completed pre-clinical testing of the vaccine candidate in mice and rats and demonstrated that the animals were protected from subcutaneous and intravenous heroin challenge. Ongoing durability studies have demonstrated that antibody titer and protective efficacy were maintained 6 months after the last vaccination. This project proposes to advance the development of the vaccine candidate by conducting a Phase I/IIa human clinical trial, by performing vaccine synthesis, nonclinical studies, and then a clinical trial. The supplemental award will allow for testing the efficacy of fentanyl haptens and of the combination heroin–fentanyl vaccine.

Voltage-gated sodium channels are responsible for the transmission of pain signals. Nine genes have been identified, each having unique properties and tissue distribution patterns. Genetic studies have correlated a hereditary loss-of-function mutation in one human Na+ channel isoform – ?Na?V?1.7 – with a rare genetic disorder known as Congenital Insensitivity to Pain (CIP). Individuals with CIP are not able to feel pain without any significant secondary alteration. Thus, selective inhibition of ?Na?V?1.7 in normal humans could recapitulate the phenotype of CIP. This research team developed a non-permanent gene therapy to target pain that is non-addictive (because it targets a non-opioid pathway), highly specific (only targeting the gene of interest), and long-term lasting (around 3 weeks in preliminary assays in mice). During this Phase I , the team will 1) test additional pain targets ?in vitro?, and 2) evaluate the new targets ?in vivo ?in mice models of inflammatory and neuropathic pain. 

Naltrexone (NTX) has been proven as an important, safe, and effective therapy in helping patients overcome opioid addition and in preventing overdose. Unfortunately, the therapeutic potential of NTX has been blunted by poor adherence. To combat this issue, a system must be developed to deliver NTX for longer durations than are currently available with a more patient-friendly format. The goal of this research is to optimize and scale up our laboratory PLGA-based microparticle formulations of NTX delivery (either 2 months or 7–10 days) and bridge it to a Phase 1 clinical trial. This innovation will result in a more patient-friendly format consisting of less painful injections and improved release kinetics. PLGA-based drug delivery systems have been used successfully in a number of small-molecule products and are the most widely utilized and studied biocompatible polymer systems in controlled release. Thus, the regulatory and development hurdles with the FDA will be lower than with other novel excipients or technologies. The significance of this research and product development is that the final outcome of this project will ultimately provide a new, readily viable, essential tool to help patients overcome opioid dependence.