There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The purpose of this study is to determine if avascular necrosis of the acetabulum is present in metal-on-metal revisions and to what depth this dead avascular bone occurs. A convenient sample of a consecutive series of 15 patients treated for metal on metal acetabular revision surgery will be included.
The purpose of this trial is to test if VC-01™ combination product can be implanted subcutaneously in subjects with Type 1 Diabetes and maintained safely for two years. It will also test if VC-01 is an effective treatment for subjects with Type 1 Diabetes.
The proposed study will evaluate the response and remission rates for major depressive disorder (MDD) in end-stage renal disease (ESRD) patients undergoing maintenance hemodialysis (HD) treated with bupropion or fluoxetine for 12 weeks. In addition, the study will document the relative tolerability and safety, and longitudinally contrast the effects of bupropion and fluoxetine on measures of cognitive function, fatigue, inflammation, and tryptophan (TRP) and TRP catabolites in blood. It is hypothesized that both drugs will significantly reduce MDD symptoms from baseline, and be tolerable and safe, but bupropion will be associated with greater reduction in pro-inflammatory cytokines, cognitive impairment, and fatigue compared with fluoxetine. The Specific Aims of this study are: Aim 1: Determine the efficacy of bupropion and fluoxetine in treatment of MDD in ESRD/HD patients. Aim 2: Determine whether longitudinal change in MDD symptoms, cognitive dysfunction, and fatigue differ between bupropion and fluoxetine. Aim 3: Determine whether longitudinal change in MDD symptoms, cognitive dysfunction, and fatigue correlate with change in inflammation, measures of TRP availability to brain, or neurotoxic TRP metabolites. Hypotheses: 1. Bupropion and fluoxetine will both show efficacy in treating MDD; 2. Bupropion will lead to greater improvement in cognitive dysfunction and fatigue than fluoxetine; and 3. Change in cognition and fatigue over time will correlate with change in c-reactive protein (CRP) and quinolinic acid and change in overall depression score will correlate with measures of TRP availability.
This study uses positron emission tomography (PET) imaging to measure kappa opioid receptors (KOR) in the brains of individuals with and without post-traumatic stress disorder (PTSD). The investigators propose to recruit 45 drug-naïve individuals, N=15 patients with PTSD, N=15 trauma-exposed, but asymptomatic healthy control subjects (TC) and N=15 non-trauma exposed healthy control subjects (HC) to participate in one magnetic resonance imaging (MRI) and one PET study. The investigators will also carefully document trauma history, and collect behavioral and neuroendocrine measures to provide a more integrative view on the neurobiology of PTSD and its phenotype. The investigators predict PTSD will show greater carbon - 11 (11C)[11C]LY2795050 volume of distribution (VT) (i.e. KOR binding) values than control populations in an a priori defined PTSD circuit.
The objective of the proposed translational study is to test a model, based upon basic science studies, exploring multisystem impairments in PTSD including endocannabinoid (eCB) and glucocorticoids in the modulation of fear memories by examining the cannabinoid type 1 (CB1) receptor in a PTSD fear circuit as well as glucocorticoid function. The investigators propose that impaired eCB signaling in PTSD resulting in the maladaptive neurobehavioral response to the stressor is associated with an upregulation of the CB1 receptors and insufficient glucocorticoid signaling.
The purpose of this study is to use positron emission tomography (PET) imaging to measure the activity of the kappa opioid receptor (KOR) in the brains of depressed and non-depressed individuals.
The purpose of this study is to see whether adding everolimus to hormone treatment before breast surgery will increase the chances of shrinking the breast cancer in those patients with hormone-responsive breast cancer and a lower Oncotype DX® Recurrence Score ( 25 or less), compared to prior experience with hormone therapy alone. Everolimus is a drug currently approved for use by the United States Food and Drug administration (FDA) for the treatment of patients with advanced or metastatic kidney or breast cancer. Everolimus is considered investigational for non-metastatic breast cancer patients.
This clinical trial studies how well FDG-PET/CT measures early response in patients with stage III-IV melanoma who are receiving chemotherapy. Positron emission tomography (PET)/computed tomography (CT) uses a metabolic imaging radiotracer, [18F]fluorodeoxyglucose (FDG), which selectively accumulates in tumors. FDG-PET/CT of advanced melanoma before, during, and after treatment may improve methods for predicting which patients may benefit from therapy.
Previous animal studies done by Dr. Brent Cameron in 2013 at the Univ. of Toledo have shown that glucose present in the fluid in the front of the eye, called the aqueous humor, correlates well with blood glucose. As blood glucose changes, the optical properties of the aqueous humor change, causing a change in the appearance of the iris of the eye.. The data collected in this study will be shared with IRISense to assist in validating the algorithm being used to develop the database needed. The data collected so far is in a narrow band of the normal glycemic range (healthy volunteers). We will collect standard digital photographic images of the eyes of subjects with diabetes along with corresponding blood glucose concentrations using the finger stick glucose monitoring method. In order to do this we will use standard digital photography techniques that is embedded in our benchtop prototype device
Context: Single shot peripheral nerve blocks have limited duration of action depending on the local anesthetic agent used in the block. But it rarely lasts longer than 12 hrs. Patients need oral analgesics at home once the block wears off to control the pain. Objectives: Primary Objective To determine if peripheral nerve blocks have any advantage in terms of decreasing oral analgesic requirements in the post operative period even after the effects of the block have worn off Secondary Objective To determine if inclusion of single shot regional technique improves patient/family satisfaction with post operative pain management . Study Design: Prospective randomized single blinded study. Inclusion Criteria - Children aged between 6 yr and 17yr scheduled for ambulatory peripheral orthopedic surgery with moderate to severe postoperative pain. - Surgery of moderate duration (<2hr) - Surgery associated with minimal blood loss or fluid shifts (<10% total blood volume) - American Society of Anesthesiologists (ASA) classification 1 or 2 - Parents able to understand follow up instructions and are able to reach at home by phone Exclusion Criteria - Known allergy to local anesthetics - Preexisting neuropathy with sensory or motor deficits - Skin infection at site of needle placement - Parents refusal for peripheral nerve blocks