All Clinical Trials

This research aims to provide pediatric patients with polysomnography (a sleep study) before and after orthodontic treatment to determine if the extraction of upper premolars for treating excessive overjet results in an increase of the AHI (Apnea Hypopnea Index) compared to similar patients treated without upper premolar extractions. Read Less

This is a single center, randomized, parallel assignment, and double-blind placebo-controlled pilot study to characterize the intestinal microbiome in patients with severe Alcoholic Hepatitis (SAH) and evaluate the safety and the trends in improvement of diversity of intestinal microbiome following administration of lyophilized capsules containing microbiota suspension from well screened health donors. The study aims to enroll 50 patients with SAH who will be randomly assigned in 1:1 where 25 patients will be assigned to receive orally administered lyophilized PRIM-DJ2727 and Standard of Care (SOC) and the other 25 patients will be assigned to receive placebo and SOC for 4 weeks. Read Less

This research study is evaluating the safety and efficacy of administering venetoclax and inotuzumab ozogamicin in combination in patients with acute lymphoblastic leukemia (ALL) The names of the study drugs involved in this study are: * Venetoclax * Inotuzumab ozogamicin * Dexamethasone Read Less

Laryngeal dystonia (LD) causes excessive vocal fold abduction (opening) or adduction (closing) leading to decreased voice quality, job prospects, self-worth and quality of life. Individuals with LD often experience episodic breathy voice, decreased ability to sustain vocal fold vibration, frequent pitch breaks and in some cases, vocal tremor. While neuroimaging investigations have uncovered both cortical organization and regional connectivity differences in structures in parietal, primary somatosensory and premotor cortices of those with LD, there remains a lack of understanding regarding how the brains of those with LD function to produce phonation and how these might differ from those without LD. Intervention options for people with LD are limited to general voice therapy techniques and Botulinum Toxin (Botox) injections to the posterior cricoarytenoid (PCA) and/or TA (thyroarytenoid) often bilaterally, to alleviate muscle spasms in the vocal folds. However, the effects of injections are short-lived, uncomfortable, and variable. To address this gap, the aim of this study is to investigate the effectiveness of repetitive transcranial magnetic stimulation (rTMS), a non-invasive neuromodulation technique, in assessing cortical excitability and inhibition of laryngeal musculature. Previous work conducted by the investigator has demonstrated decreased intracortical inhibition in those with adductor laryngeal dystonia (AdLD) compared to healthy controls. The investigators anticipate similar findings in individuals with with other forms of LD, where decreased cortical inhibition will likely be noted in the laryngeal motor cortex. Further, following low frequency (inhibitory) rTMS to the laryngeal motor brain area, it is anticipated that there will be a decrease in overactivation of the TA muscle. To test this hypothesis, a proof-of-concept, randomized study to down-regulate cortical motor signal to laryngeal muscles will be compared to those receiving an equal dose of sham rTMS. Previous research conducted by the investigator found that a single session of the proposed therapy produced positive phonatory changes in individuals with AdLD and justifies exploration in LD. Read Less

The development of type II diabetes (T2D) is strongly associated with obesity and both are well-established risk factors for cardiovascular disease. Knowing that vascular dysfunction is an early event in the development of cardiovascular disease in obese diabetic (OB-T2D) patients, The investigators set their long-term goal to define molecular mechanisms of vascular dysfunction and corrective strategies that target these mechanisms such as physical activity and weight loss. The investigators recently discovered that human adipose tissues release extracellular vesicles (adiposomes) that are efficiently captured by endothelial cells. Adiposomes are known to carry bioactive cargos such as proteins and micro RNAs; however, their lipid content has not been studied nor has their ability to transfer their lipid cargo to endothelial cells. In the current application, the investigators propose to investigate the role of adiposomes in communicating the unhealthy milieu, mainly dysregulated lipids, to endothelial cells in OB-T2D subjects. On top of these lipid species that the investigators propose to be carried by adiposomes are glycosphingolipids (GSLs). These lipids originate from the glycosylation of ceramides, a chemical process that is upregulated in the presence of inflammation and high glucose levels. Preliminary findings showed that in endothelial cells, GSL-rich adiposomes disturb plasma membrane structure and subsequently induce endothelial dysfunction. Moreover, the investigators found that preconditioning endothelial cells with high shear stress (which is an exercise mimetic) protected endothelial cells from the detrimental effects induced by adiposomes. Therefore, the central hypothesis is that adipose tissues in OB-T2D patients release GSL-loaded adiposomes that induce vascular endothelial dysfunction. The researchers propose that exercise and weight loss interventions (bariatric surgery) will restore adipose tissue homeostasis, reduce GSL-loaded adiposomes, and subsequently alleviate vascular risk in OB-T2D patients. The investigators will test the hypotheses by pursuing the following aims: aim 1: Investigate the role of GSL-rich adiposomes in the pathogenesis of endothelial dysfunction in OB-T2D adults; aim 2: Test the effectiveness of exercise training in reducing adiposome-mediated effects on vascular function; and aim 3: Examine changes in adiposome/caveolae axis following metabolic surgery and their association with vascular function. Read Less

This study will adapt and scale existing AHRQ-supported interoperable CDS for patient-centered chronic pain care. The objective of this project is to study the adaptation and implementation of an existing interoperable CDS tool for pain treatment shared decision making, with tailored implementation support, in primary care clinical settings. The central hypothesis is that tailored implementation support will increase CDS adoption and shared decision making. Read Less

When untreated, eating disorders present with tremendous burdens to affected active duty Service members and Veterans and their families, and are very costly to the DoD and VA healthcare system. A comparative effectiveness study with state-of-the-art virtual treatment for BN and BED specifically adapted for testing with the Veteran population and other underrepresented eating disorder populations will lead to major improvements in clinical outcomes. The treatment will be integrated with VA's newest telehealth technology to profoundly enhance access to care anywhere, at any time. This trial of therapist-led and self-help CBT treatments, combined with our expert panel methods to inform VA Clinical Practice Guidelines for Eating Disorders and plans for dissemination, will accelerate the pace for the transition of results both for large-scale deployment in the VA system and for real-world impact among diverse and underrepresented eating disorder populations. Read Less

The purpose of this research study is to understand what effect near complete estrogen deprivation (NCED) therapy has on the heart in breast cancer patients. Investigators want to understand if NCED changes how the heart works. Read Less

The proposed study will test a novel treatment for alcohol use disorders (AUD) to determine if it helps Veterans reduce their hazardous drinking and recover from alcohol-related functional impairments across social, occupational, and domestic domains. To do so, the investigators will evaluate clinical, cognitive, and neural effects of a computer-delivered Approach Avoidance Training (AAT) treatment - which changes implicit tendencies to approach alcohol-related cues - in conjunction with standard VA care. The project will support RR\&D's mission to improve Veterans' participation in their lives and community by determining if this innovative alternative technique can improve recovery outcomes for Veterans with AUD and exploring how the intervention works. Read Less

Multi-center, single arm, prospective trial to estimate safety, feasibility, technical outcomes, and clinical outcomes of percutaneous cryoablation with neo-adjuvant trans-arterial embolization of the tumor in patients with T1b renal cell carcinoma. Continuous safety monitoring will be performed with stopping rules for patient accrual or study continuation. Read Less

The purpose of this study is to investigate the efficacy, safety, and tolerability of two dorsolateral prefrontal cortex (DLPFC) repetitive transcranial magnetic stimulation (rTMS) protocols to alleviate symptoms of depression in United States (U.S.) military service members and veterans with a history of concussion/mild traumatic brain injury (TBI). Read Less

The proposed research is relevant to public health because a greater understanding of plasticity after central vision loss can inform new therapies for treating low vision and has potential to benefit millions of individuals suffering from low vision. The treatment of low vision is particularly relevant to the mission of the NEI to support research on visual disorders, mechanisms of visual function and preservation of sight. Declines in vision are particularly common in older adults and thus increasing our understanding of how to cre- ate effective means of improving vision is also highly relevant to the mission of the NIA to support research on aging and the health and well-being of older people. Read Less