There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
The major aim of treatment for rheumatoid arthritis is remission. Nevertheless, structural radiographic progression is observed in 15 to 20% of patient getting remission. Numerous definitions of the remission proposed by literature remain imperfect. Recently ultrasonography and MRI seem to be helpful in diagnosis and follow-up of rheumatoid arthritis. Studies in patients with clinical remission are reporting 75 to 90% of persistent MRI and ultrasonography synovitis, 45% of cases with synovial activity. To our knowledge, in such case few studies showed correlation between persistent imaging synovitis and structural radiographic progression. On the other hand, no studies with extremity dedicated RMI in patients with remission are reported. In this preliminary study, the investigators propose to evaluate in patients with rheumatoid arthritis remission and persistent dedicated MRI synovitis the structural radiographic progression at one year.
Lutein is one of oxygenated carotenoids. Over the past few years, there has been increased interest in evaluating the effect of lutein for optimizing immune functions. A large number of epidemiological studies support the notion that a high intake of lutein is associated with a reduced risk of coronary heart disease and certain types of cancer. The biological mechanisms for the protective effects of this carotenoid, including powerful modulation of functions and antioxidant properties, are only partially known. Although several nutrients and phytochemicals have been shown to modulate immune functions in humans, few studies have investigated the role of lutein consumption. No information is available as to whether lutein supplementation could be protective against oxidative stress. Therefore, the objective of the present study was to examine the effect of consuming different doses of lutein on oxidative stress in healthy subjects.
Spinocerebellar ataxias (SCA) are genetic neurological diseases that cause imbalance, poor coordination, and speech difficulties. There are different kinds of SCA and this study will focus on types 1, 2,3, and 6 (SCA 1, SCA 2, SCA 3 , also known as Machado-Joseph disease and SCA 6). The diseases are rare, slowly progressive, cause increasingly severe neurological difficulties and are variable across and within genotypes. The purpose of this research study is to bring together a group of experts in the field of SCA for the purpose of learning more about the disease. The research questions are: 1. How does your disease progress over time? 2. What are the best ways to measure the progression? 3. Do some genes, other than the gene that is abnormal in your disease, have any effect on the way the disease behaves? This is a nationwide study and we expect that 800 patients will participate all over the USA. The participants will be in the study for an indeterminate period of time. Study visits will be done every 6 or 12 months depending on the participating site.
Randomized trial comparing lumbar plexus catheter versus femoral nerve catheter (single-shot femoral block as control group) for postoperative pain control after anterior cruciate ligament repair in children (age 11-21). Primary outcome is pain scores for the first 72 hours. Secondary outcomes include opioid consumption, incidence of opioid side effects and quality of recovery (previously validated scale). Our hypothesis is that lumbar plexus catheter will provide superior pain control and overall quality of recovery compared to femoral nerve catheters.
The primary objective of this study is to verify, through a randomized, blinded, parallel clinical trial, the efficacy of bovine heparin from Bergamo Laboratory ACTIPARIN ® product when compared to porcine heparin APP Pharmaceutical in patients undergoing surgery cardiovascular disease and who require cardiopulmonary bypass, through the control of hemostasis during and after surgery, based on measurements of markers of coagulation ACT, aPTT, anti-Xa heparin levels and the excessive blood loss (hemorrhage) after the end of surgery.
The primary objective of this study is to verify, through a randomized, blinded, parallel clinical trial, the efficacy of bovine heparin from Eurofarma Laboratory product when compared to porcine heparin APP Pharmaceutical in patients undergoing surgery cardiovascular disease and who require cardiopulmonary bypass, through the control of hemostasis during and after surgery, based on measurements of markers of coagulation ACT, aPTT, anti-Xa heparin levels and the excessive blood loss (hemorrhage) after the end of surgery.
The investigators will conduct a descriptive, prospective, three-armed study concerning the pathophysiology of chronic rhinosinusitis. In one part of the study the investigators want to investigate the presence of biofilm in patients with chronic rhinosinusitis both with and without nasal polyps compared with a control group of subjects without chronic rhinosinusitis. The investigators will also compare quality of life in the three groups and correlate disease severity in biofilm patients versus patients where biofilm was not present. The hypothesis here is that biofilm patients suffers a more severe disease. In the other arm of the study the investigators will compare the presence of different biochemical compounds in the three study groups. The investigators specifically want to investigate matrix metalloproteases and apoptosis-inhibitors with immunohistochemistry. The investigators may also add other compounds to our test-battery if interesting candidates surface in the literature during the inclusion period. The purpose of this part of the study is to investigate candidates for the development of nasal polyposis. The investigators plan to include 100 patients suffering from chronic rhinosinusitis with nasal polyps, and 100 patients with chronic rhinosinusitis without nasal polyps and 30 control subjects.
To date except for the larger striato-pallidal complex, there are no reliable imaging markers of small deep nuclei. Major improvement of the spatial resolution resulting from the use of ultra-high field MRI systems offers new perspectives of imaging of these deep structures. We will use the new contrast mechanisms available in data acquired with ultra-high field MR systems (7T) as well as the most recent high angular diffusion imaging techniques in order to characterize the cytoarchitectonics of the deep brain structures and brainstem lesions in parkinsonian syndromes (with special interest in substantia nigra (SN) pathology and nigro-striatal fiber pathways; subthalamic nucleus (STN), red nucleus (RN), oculomotor structures (involved in PSP); pedonculo-pontine nucleus (involved in gait and posture control disorders) and the locus sub-coeruleus area (implicated in sleep disorders) The optimized MR sequences at 7T will be adapted and validated at 3T (on a more clinically oriented MRI approach). The clinical goal of the project (via the characterization of deep brain structures) is the detection of new neuroimaging markers of neuronal lesions in PD. These biomarkers will be used to create a diagnostic tool at early stage of the disease that could be correlated to clinical signs such as gait disorders and help to identify predictive factors. In addition, this could contribute to establish an adequate therapeutic strategy (as for example with deep brain stimulation).
Laparoscopic cholecystectomy has been established as the treatment of choice for symptomatic gallstone disease. The main advantages of laparoscopic surgery are the cosmetic result, reduced postoperative pain, shorter hospital stay and rapid return to normal activity. Although reduced, however, pain is still substantial and constitutes the main clinical problem after laparoscopic cholecystectomy, especially for planned day case procedures. Recently, a new technique of laparoscopic cholecystectomy has been developed, in which all instruments are inserted through the same umbilical incision. The single incision laparoscopic surgery (SILS) technique for cholecystectomy has been proved to be feasible and safe by several studies. The purpose of the study is to compare postoperative pain and operating time, nausea, vomiting, tissue damage, pulmonary function, cosmetic result, quality of life between SILS and standard laparoscopic cholecystectomy.
The aim of the study is to observe the effects of antihemostatic therapy including nonsteroidal antiinflammatory, anticoagulant and antiaggregant therapy and other patient and procedure related factors on the risk of endoscopic biliary sphincterotomy induced bleeding.