All Clinical Trials

Low social motivation is a significant symptom of schizophrenia and is a major cause of disability and suffering for many patients struggling with the illness. Social motivation refers to the drive to participate in or abstain from social activities. Many patients with schizophrenia evidence both decreased drive to seek positive social input (approach motivation) and heightened drive to avoid negative social input (avoidance motivation) compared to individuals without the illness. Despite the enormous burden of these deficits on patients, there are no medications that effectively treat impaired social motivation. Buprenorphine is an unusual drug that is used to treat opioid use disorder at higher doses and more recently, to treat depression and suicidality at lower doses. It is a unique opioid medication that has a compound action that gives it the potential to improve social motivation both by boosting approach motivation and by reducing avoidance motivation. The effects of low doses of buprenorphine have previously. been studied in healthy volunteers, showing that the drug enhances social motivation. These results in nonclinical volunteers suggest that buprenorphine may be a promising treatment for deficits in social motivation seen in some patients with schizophrenia. However, no previous studies have investigated the effects of buprenorphine on social motivation in this population. Here the effects of a low dose of buprenorphine (0.15mg) on social motivation in patients with schizophrenia (N=40) will be assessed. In this double-blind, cross-over, placebo-controlled study, participants will attend a 2-hour preparatory session and two 6-hour laboratory sessions, at which they will receive either placebo or buprenorphine. During expected peak drug effect they will complete validated tasks assessing social motivation. It is expected that buprenorphine will increase approach motivation and decrease avoidance motivation as measured by an attention bias task. The results of this study will lay the foundation for the clinical use of buprenorphine as the first medication to treat social deficits in schizophrenia. Read Less

The purpose of this study is to compare porcine collagen membrane and bovine collagen wound dressing in human tooth extraction sites. The outcomes measured will be soft tissue thickness changes as well as bone density changes. Read Less

To test the timing of evening tablet use on children's circadian phase and sleep (i.e., sleep onset and sleep duration) compared to no screen media use. To explore the effect of evening tablet use on children's inhibitory control and executive function. Read Less

The goal of this clinical research study is to evaluate the safety and tolerability of injecting certain cells that you produce in your bone marrow called mesenchymal stem cells (MSCs) into your salivary glands. Participants will have head and neck cancer that was treated with radiation therapy, and in this study will: * Undergo a collection of bone marrow using a needle; * Donate saliva; * Undergo a salivary gland ultrasound; and, * Complete questionnaires that ask about dry mouth Participants can expect to be in this study for up to 30 months. There is no expanded access program available per this protocol. Read Less

The purpose of this study is to evaluate the safety and reactogenicity of mRNA-1195 in healthy participants. Read Less

This study will combine brain imaging and neuromodulation tools to investigate the underlying neurobiological mechanisms of exercises. The findings will enhance our understanding of the mechanisms underlying mind-body exercise and facilitate the development of new pain management approaches. Read Less

This is an open-label, two-part, phase 1-2 study designed to determine the safety, tolerability, PK, pharmacodynamics (PD), and proof-of-concept efficacy of ST316 administered IV in subjects with selected advanced solid tumors likely to harbor abnormalities of the WNT/β-catenin signaling pathway. The study consists of two phases: a phase 1 dose escalation/regimen exploration phase and a phase 2 expansion phase. Read Less

The goal of this study is to conduct a pilot randomized waitlist-controlled trial to assess the feasibility, acceptability, and preliminary effects of substituting the NIDA standardized research e-cigarette (SREC) for combusted cigarettes in MOUD-TUD who are not ready to quit smoking. A waitlist controlled RCT using a mixed-methods sequential explanatory design will investigate the impact of SREC provision on: 1) tobacco use behavior (e.g., cigarettes per day \[primary outcome\], SREC use), 2) biomarkers (e.g., carbon monoxide, anabasine), 3) cigarette dependence and withdrawal, and 4) short-term health effects and tolerability (e.g., respiratory symptoms, substance use). In the proposed RCT, N=40 adults stable on MOUD with buprenorphine who report daily smoking recruited from MGH primary care practices will be randomly assigned to receive the SREC for 8 weeks, either immediately (iSREC), or after an 8-week delay (waitlist control \[WLC\]). They will be followed an additional 4 weeks after SREC provision ends (to 12 weeks in iSREC and 20 weeks in WLC). Read Less

African Americans face racial disparities in colorectal cancer (CRC), with lower screening rates and higher incidence and mortality rates. To address this gap and improve CRC screening rates, investigators aims to recruit a total of 1,200 African American participants aged 45-75 during their visits to the DMV, 4606 N 56th St Ste100, Omaha, for CRC screening. All participants will receive a free Fecal Immunochemical Test (FIT) kit with a prepaid return envelope, a culturally tailored educational brochure, reminder text messages and calls, and post-FIT navigation support for participants with positive results or without family doctor/insurance. Kits are returned to a designated Nebraska Medicine lab for testing, and test results will be mailed to participants within 14-21 days. Participants will be assigned to one of two groups: the on-site distribution group or the on-site distribution group with social media advertising group. The social media advertising group will additionally be exposed to targeted ads on platforms like Facebook, Instagram, and YouTube to increase awareness and potentially improve participation rates. The study will compare FIT kit return rates, positive screening rates, and completion rates of follow-up colonoscopies after positive FIT results between the two groups. Read Less

The purpose of this study is to understand the processes by which HIV care is decentralized, an evidence-informed strategy to improve retention in HIV care, in Peru. Decentralization of HIV services has not been evaluated using experimental designs and urban decentralization studies of HIV are uncommon, so this study will lend important insights for future decentralization efforts in Peru and other countries. Read Less

Women with known or suspected recurrent or metastatic uterine cancer may be eligible for this study. Patients may participate in this study if they are at least 18 years of age, most participants will be receiving care at the clinical practices of the University of Pennsylvania. \[18F\]fluoroestradiol (FES) PET/CT imaging will be used to evaluate estrogen receptor (ER) activity in areas of disease known by standard of care imaging (e.g. CT, MRI, Bone Scan, FDG PET/CT, ultrasound) or clinical exam. For patients starting a new line of therapy, imaging will occur prior to starting new therapy. For patients who completed an initial scan and are starting new therapy, some patients may also undergo a second FES PET/CT scan at the time of suspected progression of disease to compare for changes in FES uptake measures (prior to initiation of next line therapy). The selection of therapy will be made by a treating physician and will not be affected by participation in this imaging study. Results of the FES PET/CT scan may be shared with the treating physician or subject by request but will not be used to make clinical decisions about treatment. Read Less

This study is investigating changes to the proteins in skeletal muscle that contribute to reduced muscle size and muscle function that occurs with aging. Read Less