Funded Projects

Data from 2015 show that American Indian/Alaska Natives (AI/AN) have the highest rates of diagnosis for opioid use disorders (OUD) and deaths from drug overdose; yet, there are no prevention programs addressing opioid misuse among urban AI/AN young adults that integrate culturally-appropriate strategies with evidence-based treatment. This project proposes to address that gap and help prevent OUD in Older Adolescents and Young Adults (ages 16-30) by developing and implementing a culturally-centered intervention to address opioid misuse among urban AI/AN emerging adults in California. The study will examine outcomes at 3-, 6-, and 12- months, and explore potential mechanisms of change for decreases in opioid and alcohol and other drug use outcomes through mediation analyses, including changes in social networks and cultural connectedness. Results from this study could significantly advance scientific knowledge and clinical practice for AI/AN emerging adults.

There is a great deal of research aimed at better understanding transitions in alcohol and other drug (AOD) use patterns from early to late adolescence and from late adolescence to emerging adulthood. However, no studies to date have (a) assessments of AOD use from ages 10 to 24 across all developmental periods (middle school, high school, and emerging adulthood); (b) a large sample with substantial racial and ethnic diversity, particularly among Hispanic and Asian youth; (c) in-depth coverage of 10 areas of functioning across three key domains; (d) subjective and objective neighborhood data; or (e) the capacity to examine developmental trajectories for more than one substance. The current proposal is a continuation of previous projects that assessed AOD use across nine waves of data from age 10 to age 19. The proposed study capitalizes on the longitudinal data on protective and risk factors we have collected since age 10 in an ethnically diverse cohort by continuing to annually assess these youth in order to capture important transitions to emerging adulthood (through age 24). By advancing the epidemiology of alcohol use during adolescence and emerging adulthood, our findings can affect prevention and intervention programming for young people and address critical issues of public health policy.

There is a continued need to discover and validate new targets for potential therapeutic strategies for effective and safe treatment of pain. This project focuses on the protein metadherin, also known as astrocyte elevated gene-1 protein (AEG-1), as a possible new target for pain treatment. Preliminary studies have shown that mice genetically engineered to lack metadherin had significantly lower inflammation and chronic pain-related behaviors. This project aims to further validate AEG-1 as a pain target and test whether reducing levels in white blood cells called macrophages might work as a therapeutic strategy to reduce chronic inflammatory and/or neuropathic pain using an innovative nanoparticle approach to target specific cells.

Neonatal Opioid Withdrawal Syndrome (NOWS) is a condition that occurs when newborns are exposed to opioids during pregnancy. Symptoms often include tremors, excessive crying, sleep deprivation, and swallowing difficulties. Cases are rising, with a newborn affected by NOWS approximately every 15 minutes. Currently, healthcare providers in the United States lack standard, evidence-based treatments for NOWS. 

This project is part of a multi-center, randomized controlled clinical trial that directly compares NOWS treatments—morphine, methadone, and buprenorphine—and takes into account other types of non-drug therapies, such as behavioral interventions. The goal is to generate results that can inform clinical practice guidelines and give newborns with NOWS the best start possible. 

This site will serve as the Data Coordinating Center for the clinical trial to provide high-quality and impartial biostatistical expertise for all the study sites.

Initial studies using positron emission tomography (PET) with [11C] carfentanil, a selective radiotracer for ?-opioid receptor (?OR), have demonstrated that there is a decrease in thalamic µOR availability (non-displaceable binding potential BPND) in the brains of TMD patients during masseteric pain compared to healthy controls. ?-opioid neurotransmission is arguably one of the mechanisms most centrally involved in pain regulation and experience. The main goals of our study are: first, to exploit the ?-opioidergic dysfunction in vivo in TMD patients compared to healthy controls; second, to determine whether 10 daily sessions of non-invasive and precise M1 HD-tDCS have a modulatory effect on clinical and experimental pain measures in TMD patients; and third, to investigate whether repetitive active M1 HD-tDCS induces/reverts ?OR BPND changes in the thalamus and other pain-related regions and whether those changes are correlated with TMD pain measures.

Repetitive drug use forms powerful memories associating drug-evoked experiences with its proximal environmental cues. Memories are major obstacles for successfully treating addiction, since even after a prolonged period of abstinence, reexposure to such cues often triggers craving that promotes relapse. A polysynaptic pathway from the paraventricular nucleus of the thalamus (PVT) to the lateral hypothalamus (LH) has been shown to play a role in the maintenance of the opioid-associated memories. Hypocretin (Hcrt) neurons in the LH strongly innervate the PVT, required for maintaining wakefulness and involved in drug seeking. These factors may link sleep disorders in opioid addicts with their long-lasting drug-associated memories. This study will (1) determine whether Hcrt neurons in the LH are the major target; (2) examine whether manipulating the LH (Hcrt)-PVT pathway can effectively prevent relapse; and (3) test whether sleep intervention could be an effective strategy to prevent relapse.

Some medications for opioid use disorder (MOUD) can be provided in primary care (PC). Systems of team-based PC show promise for improving access and retention in OUD treatment. One such model, collaborative care (CC), includes a care manager, supervised by experts, who help provide evidence-based high-quality OUD care. While CC improves outcomes of depression, other mental health and substance use (MH/SU) disorders and pain, it is unknown how to optimally integrate CC for OUD with other MH/SU disorders. This pragmatic trial tests whether our model of CC for OUD and comorbid conditions increases engagement in MOUD treatment and improves depression symptoms in PC patients with OUD and depression. Innovative pragmatic elements include inclusion of all eligible patients in participating PC clinics, random recruitment and consent, and measurement of main outcomes using only secondary data. These pragmatic elements avoid studying only motivated patients and avoid activating patients randomized to usual care.

There is a need for additional effective treatments for migraine, which affects more than 36 million people in the United States. This project will develop an oral medication to disrupt the biological processes that drive migraine pain, which include nerve inflammation in response to pain signals. 

Less than half of youth in the juvenile justice system who meet the criteria for substance use disorders (SUD) have ever received treatment, and less than one third of those received treatment while under community or correctional supervision. SUDs during adolescence can lead to significantly longer periods of substance use, more severe offending, and penetration in the justice system. The Translational Research on Interventions for Adolescents in the Legal System (TRIALS) cooperative is intended to develop and test implementation strategies and associated measures to improve the continuum of substance abuse and HIV prevention and treatment services delivered to youth under juvenile justice supervision.

Less than half of youth in the juvenile justice system who meet the criteria for substance use disorders (SUD) have ever received treatment, and less than one third of those received treatment while under community or correctional supervision. SUDs during adolescence can lead to significantly longer periods of substance use, more severe offending, and penetration in the justice system. The Translational Research on Interventions for Adolescents in the Legal System (TRIALS) cooperative is intended to develop and test implementation strategies and associated measures to improve the continuum of substance abuse and HIV prevention and treatment services delivered to youth under juvenile justice supervision.

Despite increased efforts to understand the neurodevelopmental sequelae of in utero opioid and other substance exposure on long-term behavioral, cognitive, and societal outcomes, important questions remain, specifically, 1) How is brain growth disrupted by fetal substance and related pre- and post-natal exposures? and 2) How are these disrupted growth patterns causally related to later cognitive and behavioral outcomes? This project seeks to formulate an approach to addressing these key questions and decipher the individual and cumulative effect of these intertwined pre- and post-natal exposures on child neurodevelopment. First, researchers will address the legal, ethical, and mother-child care and support concerns implicit in this study. Next, they will integrate across our areas of neuroimaging expertise to develop, implement, and harmonize a multi-modal MRI and EEG protocol to assess maturing brain structure, function, and connectivity. Finally, researchers will develop and test advanced statistical approaches to model and analyze this multidimensional and longitudinal data.

Buprenorphine-naloxone is known to work for the treatment of Opioid Use Disorder (OUD). However, despite its success in treating OUD, retention for these kinds of medication-assisted treatments (MATs) for OUD is notoriously low, having a dropout rate of approximately 50 percent within the first 6 months. One factor known to negatively impact a person?s adherence to treatment is stigma. This includes, not only stigma associated with having OUD, but also that of multiple stigmatized identities, including stigma associated with race. The goal of this supplement award is to decrease OUD- and race-related stigma in low income African American communities using a Behavioral Economics Stigma Reduction intervention that functions at the intrapersonal, interpersonal, and community levels. The investigators will work at the individual level to address stigma in untreated individuals who present with OUD at local community or faith organizations through stigma reduction counseling and tangible rewards for treatment uptake. To assess the interpersonal stigma, referred family members or support persons of these individuals will also be enrolled to receive stigma reduction and supportive skills counseling. Finally, a stigma reduction campaign will be developed and administered to the community via social media and billboards. Community members? substance use stigma will be compared before and after the campaign.