Funded Projects

The current studies are designed to examine a novel approach to treating OUD, namely use of a vaccine (OXY-KLH) targeted against oxycodone, one of the most commonly misused prescription opioids, and a vaccine (M-KLH) targeted against heroin/morphine. The researchers will evaluate the safety, immunogenicity, and preliminary efficacy of OXY-KLH and M-KLH. Overall, the proposed studies will provide a great deal of information about the safety and potential efficacy of the vaccines in reducing the addiction liability of opioids, which will be administered in a controlled laboratory setting. If the outcomes of the proposed studies with OXY-KLH and M-KLH are favorable, development of the bivalent vaccine (OXY-KLH plus M-KLH) that will target oxycodone and heroin will proceed. The long-term goal of this research is to develop a multivalent vaccine directed against oxycodone, heroin, and other relevant opioids.

Prevalence rates of opioids misuse in Los Angeles County (LA) are particularly high among individuals of childbearing age and in already-vulnerable populations including African American females. These data highlight a pressing need for a systematic study of the effects of prenatal drug exposures (PDE) in the unique sociodemographic LA County area. In this project, researchers aim to establish the feasibility for the large-scale Phase II HEALthy BCD study in the Los Angeles area with three specific aims: (1) build a broad interdisciplinary team of investigators capable of a multi-faceted study of brain and behavioral development in both typically developing and at-risk infants/children; (2) establish a set of highly executable recruitment and retention strategies for both drug-free and drug-exposed infants/children; and (3)establish comprehensive study protocols that will help address the three key research objectives of the Phase II study.

Chronic visceral pain disorders, such as interstitial cystitis/bladder pain syndrome, are among the most difficult types of pain to treat. This project will conduct a detailed analysis of an enzyme thought to be involved with the disorder (purine nucleoside phosphorylase, or PNPase) as a target for new nonopioid pain medications to treat interstitial cystitis/bladder pain syndrome. The research will lay the groundwork for developing targeted treatments for visceral pain disorders.

Opioid use during pregnancy is associated with harmful health outcomes for infants including preterm birth, neonatal opioid withdrawal syndrome, and brain-related problems. This project will carry out an in-depth investigation of the effects of opioid use during pregnancy including changes to health of the placenta, inflammation in the fetus, as well as behavioral and movement-related outcomes during the first year of life. This research will contribute to fundamental knowledge about how the placenta and brain work together as well as identify new strategies for diagnosing, treating, and preventing opioid harm to the fetus and mother.   

Acupuncture has been found to be effective in treating chronic lower back pain (cLBP) in adults. Yet trials have rarely included older adults, who have more comorbidities and may respond differently from typical trial participants. To fill this gap, the study team will conduct a three-arm trial of 828 adults ?65 years of age with cLBP to evaluate acupuncture versus usual care. They will compare a standard 12-week course of acupuncture with an enhanced course of acupuncture (12-week standard course, plus 12-week maintenance course) to usual medical care for cLBP. If successful, this pragmatic RCT will offer clear guidance about the value of acupuncture for improving functional status and reducing pain intensity and pain interference for older adults with cLBP.

Infants exposed to opioids in the womb may suffer from neonatal opioid withdrawal syndrome (NOWS). They experience symptoms such as excessive crying, irritability, rapid breathing, elevated heart rates, tremors, and sometimes seizures. There is no accepted standard treatment for NOWS; infants are treated with pharmacological (opioid administration and gradual weaning) and nonpharmacological measures. Nonpharmacological care such as swaddling, rocking, frequent feedings, and skin contact, are time consuming, placing a substantial burden on hospitals with limited resources. Prapela, Inc. previously developed a hospital bassinette pad that, using stochastic vibrotactile stimulation (SVS) technology, very gently rocks infants with NOWS to reduce irritability and other symptoms without disturbing sleep patterns. This project will conduct an additional clinical study to determine the SVS bassinette pad’s efficacy in reducing breathing and heart rate, its safety, and its acceptability with clinical staff and parents caring for infants with NOWS.

Some chemotherapy treatments damage nerves outside the brain and spinal cord. This condition, chemotherapy-induced peripheral neuropathy, involves tingling, burning, weakness, or numbness in hands and/or feet and affects nearly 70% of cancer patients receiving chemotherapy. Common pain medications, including opioids, can relieve pain for short intervals but are not suitable for long-term therapy. This project will develop and test a new type of treatment (reduced size cyclic analogs) for this condition. The research will evaluate the ability of this therapy to reduce inflammation and pain, as well as to repair nerve damage.

This study will conduct preclinical and clinical assessments of the NMDA modulator NYX-783 for treatment of opioid drug-seeking and relapse to opioid use disorder (OUD). NYX-783, a novel small molecule being developed by Aptinyx, has shown evidence of safety/tolerability in Phase 1 studies and is currently in Phase 2 trials for post-traumatic stress disorder. This project will test the safety, tolerability, and pharmacokinetics (PK) of NYX-718 in morphine-maintained patients in residential settings and then conduct a combined inpatient (safety/tolerability/PK) / outpatient (preliminary efficacy) study testing NYX-783’s effects on opioid use and relapse, stress/cue reactivity, craving, and quality of life in OUD subjects maintained on standard extended release naltrexone over a 10-week period. Successful completion of these studies will set the stage for larger scale Phase 2/3 studies of efficacy in OUD that will ultimately be required for FDA approval of NYX-783 for the treatment of drug-seeking and relapse in OUD.

Substance use disorder (SUD) is a serious public health and socioeconomic burden. In this project, researchers will develop novel drug compounds that dually target orexin receptors and kappa opioid receptors, which have both been implicated in SUD. The compounds will then be tested for effectiveness in preclinical models of SUD, including models of cocaine, methamphetamine, and fentanyl use. This research has the potential to provide highly impactful and innovative treatment options for SUD via simultaneous modulation of multiple signaling pathways.

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.

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.