Funded Projects

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.

 Investigating the broader efficacy of sEH inhibition and specifically our IND candidate, EC5026, has indicated that it is efficacious against chemotherapy induced peripheral neuropathy (CIPN). This painful neuropathy develops from chemotherapy treatment, is notoriously difficult to treat, and can lead to discontinuation of life-prolonging cancer treatments. Thus, new therapeutic approaches are urgently needed. The research team will investigate if EC5026 has potential drug-drug interaction with approved chemotherapeutics or alters immune cells function, and assess the effects of sEHI on the lipid metabolome and probe for changes in endoplasmic reticulum stress and axonal outgrowth in neurons. The team proposes to more fully characterize the analgesic potential of our compound and investigate on and off target actions in CIPN models and model systems relevant to cancer therapy.

Over-the-counter medicines such as non-steroidal anti-inflammatory drugs are ineffective for treating severe chronic pain and may have serious side effects from continued use, which limits treatment options. A kinase (an enzyme whose activity targets a specific molecule) called TAK1 is involved in the chronic pain process. This research will develop a molecule previously shown to be effective in a model of inflammatory pain that also inhibits TAK1. A main goal will be to determine if this inhibitor (takinib analog HS-276) can cross the blood-brain barrier and, if successful, pursue FDA  Investigative New Drug-enabling safety studies leading to a Phase I clinical trial and a potential new chronic pain treatment.

There is an urgent need for non-opioid post-operative pain management solutions.  This research is developing a naturally absorbable polymer film that can release controlled amounts of the non-opioid analgesic bupivacaine – aiming to manage pain for several days following surgery. Project objectives are to optimize the timing of drug release, develop manufacturing standards, determine effective dosage for preserving motor function, and determine safety and efficacy in mouse models of neuropathic pain. Continued development of this film delivery system may lead to a new, non-opioid therapeutic strategy that could be combined with local anesthesia for up to 4 days after surgery to reduce or potentially eliminate opioids use.

The orbitofrontal cortex (OFC) plays an important role in regulation of addiction, and OFC impairment from cocaine and opioids use leads to repetitive drug use. Brief optogenetic activation of the OFC reduces self-administration of drugs in neurobiology studies. However, the OFC is less accessible for noninvasive stimulation using direct transcutaneous current stimulation or transcranial magnetic stimulation. The small business EvON Medics LLC and Howard University have created a home-based olfactory pulsing prototype, called computerized chemosensory-based orbitofrontal cortex training (CBOT), using a high-fidelity chemosensory and computerized olfactory training approach to enable home-based neuromodulation of the OFC for treatment of opioid use disorder (OUD). A pilot feasibility study in OUD samples suggests that CBOT can minimize withdrawal symptoms, reduce drug cravings, enhance positive affect, and reduce rate of positive urine drug tests. The project seeks to establish CBOT stimulation parameters needed to maximally improve outcome inference and emotion regulation in OUD.

Novel therapies that could alleviate the severe symptoms of opioid withdrawal and/or reduce risk of relapse could help address the devastating opioid crisis. Memantine, an FDA-approved NMDA receptor antagonist, has shown encouraging results as an adjunct to existing opioid use therapies. Its therapeutic efficacy likely derives from its preferential binding to NMDA receptors located outside the synapse, since broad spectrum NMDA receptor antagonists are associated with multiple clinical side effects. This project will use a preclinical model to evaluate a nanostructured version of memantine (AuM) that physically prevents its binding to synaptic NMDA receptors but allows activation of extrasynaptic receptors with potency exceeding that of free memantine.

Adolescents in the juvenile justice system demonstrate very high rates of tobacco, alcohol, and other drug use (ATOD), with rates that are estimated to be three times higher than non-justice-involved youth. Substance-abusing youth are at higher risk than nonusers for mental health problems, including depression, conduct problems, personality disorders, suicidal thoughts, attempted suicide, and completed suicide, as well as detrimental effects on neural development related to substance use. This project aims to adapt and test the feasibility and efficacy of a smartphone application (app) intervention prototype that would help adolescent substance users reduce or quit their substance use. The program, entitled Rewire, is based on the primary substance use cessation components tested in previous work with juvenile justice-involved adolescents and on intervention components shown to be central to smoking cessation, and applies a mindfulness approach as the guiding framework for the intervention.

One of the current critical needs in addressing the opioid crisis is the development of new overdose-reversal interventions, including wearable technologies that can detect an (impending) overdose from physiological signals to signal for help, or trigger a coupled automated injection of naloxone. This project tests the approach of monitoring respiration by detecting the sounds of breathing in the trachea. This proposal aims to develop a machine learning algorithm that could process those sounds, detect the kinds of patterns of reduced breathing that occur during an opioid overdose, and design a miniature wireless sensor that could be used to detect those sounds. Such a sensor and algorithm could be a key component to a device to detect and intervene in overdoses.

Current drug-screening immunoassays use benchtop analyzers that require experienced personnel, time, and a laboratory setup. Physicians without access to in-house testing have to send out patient samples for screening, resulting in unacceptable delays in the treatment of patients who are potentially suffering from chronic pain. This project, a partnership with BreviTest Technologies, LLC, aims to develop a low-cost, point-of-care (POC) urine drug testing (UDT) device to detect opioids. The goal is for a portable platform to deliver quantitative performance similar to a standard laboratory test for opioids within a 10-minute run time. If successful, this will provide a technology capable of performing rapid quantifications of urine drug levels in a physician’s office, providing an invaluable tool to render more effective pain management dosing to patients, thus paving the way toward lower toxicity and a better quality of life.

Relapse is common in people with opioid use disorder, and recovery attempts often fail within 6 months. This research project will test a novel virtual reality intervention to improve recovery outcomes for people recovering from opioid use disorder. By increasing future orientation and delay-of-reward behavior with a precision medicine personalized experience, the intervention is designed to enhance advantageous decision-making and increase positive future outcomes. The results of this study will provide critical data for creating a commercially viable software product for facilitating relapse prevention and improving opioid use disorder recovery outcomes.

The use of a pain imaging technology would allow for objective efficacy data (both pre-clinically and in clinical trials), and reduce costs by enabling smaller sample sizes due to more homogeneous populations; i.e. with a particular “pain signal,” and more accurate measurement of analgesic effects. This research team recently invented a novel positron emission tomography (PET) imaging agent as a tool to address these issues in pain care and therapy development. Although the ability of PET to detect pathological changes for (early) disease detection is widely used in cancer and neurological diseases, it has not yet been used for pain indications. The goals of this project are: 1) to change the evaluation of (experimental) pain therapies, and 2) the standard of care in pain assessment through molecular imaging. The proposed study is designed to determine the feasibility of our imaging agent to objectively measure pain in rodents. This will set the stage for a Phase II study that further develops this agent into a tool for quantifying pain/analgesia.