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 aim of the study is to examine masseter and temporal muscle sections with Ultrasonography in this individuals depending on the origin of Temporomandibular Disorders.
Non-invasive brain stimulation techniques, transcranial magnetic stimulation (TMS) and transcranial focused ultrasound (FUS), is be applied to healthy human subjects, acute pain patients, and chronic pain patients to investigate their uses for pain relief.
Today, there is an increased use of non-medical, invasive cosmetic treatments globally without sufficient awareness of possible health risks. A particular problem is young men injecting large amounts of paraffin oil into skeletal muscles especially on upper arms and chest to increase the visible size of the muscles. Several case reports have suggested that intramuscular injection of paraffin oil induces foreign body reaction and granuloma formation and subsequently hypercalcemia. Our hypothesis is that increased generation of activated vitamin D (1,25(OH)2D3) in the marcrophages may be responsible for the persistent hypercalcemia. Now trhe investigators want to include a large group of men who injected 100-10.000 ml paraffin oil to identify risk factors for developing hypercalcemia and try to understand the pathogenesis of the disease. Additionally, granuloma tissue from selected patients will be cultured ex vivo to investigate whether they produce 1,25(OH)2D3 or PTHrP and to test which drugs can most effectively be used to lower calcium levels in these men. Subsequently, we will try to stratify the men according to the severity of the changes in calcium homeostasis as we suggest that this stratification will be the basis for future intervention trials
Diarrhea-predominant irritable boewl syndrome(IBS-D) seriously affect the quality of life in patients. Clinically, it is effective to apply therapeutic method of clearing heat and promoting diuresis to the common syndrome of dampness-heat. Dysbiosis of intestinal microbiota is closely related to the immune imbalance and intestinal mucosal barrier injury. C1orf106/CYTH-1/ARF6 signal pathway, which derive from intestinal micro environment changes,is the mainly cause of intestinal mucosal barrier injury, and this is may be the common pathogenesis of dampness-heat syndrome in IBS-D . Based on the clinic, the project is to study the effect and mechanism of Chinese compound formula of clearing heat and promoting dieresis in modulating intestinal microbiota dysbiosis, repairing intestinal mucosal barrier and reconstructing intestinal microenvironment. With the combination of metagenomics and metabonomics, the study compare the differences of co-metabolites of intestinal microbiota and host within the healthy people, IBS-D patients with dampness-heat syndrome, to explore the relevance between intestinal flora and host co-metabolites. Furthermore, the experimental study is to clarify the drug targets via C1orf106/ CYTH-1/ARF6 signal pathway.Through the study of association between dampness-heat syndrome in IBS-D and intestinal microbiota, it is of important academic significance to reveal the Chinese theory intension of "homotherapy for heteropathy ".
When looking at an x-ray, radiologists are typically asked to localize a tumor (if present), and to classify it, judging its size, class, position and so on. Importantly, during this task, radiologists examine on a daily basis hundreds and hundreds of x-rays, seeing several images one after the other. A main underlying assumption of this task is that radiologists' percepts and decisions on a current X-ray are completely independent of prior events. Recent results showed that this is not true: perception and decisions are strongly biased by past visual experience. Although serial dependencies were proposed to be a purposeful mechanism to achieve perceptual stability of otherwise noisy visual input, serial dependencies play a crucial and deleterious role in the everyday task performed by radiologists. For example, an x-ray containing a tumor can be classified as benign depending on the content of the previously seen x-ray. Given the importance and the impact of serial dependencies in clinical tasks, in this proposal, the investigators plan to (1) establish, (2) identify and (3) mitigate the conditions under which serial effects determine the participants' percepts and decisions in tumor search tasks. In Aim 1, the investigators will establish the presence of serial effects in four different clinically relevant domains: tumor detection, tumor classification, tumor position and recognition speed. In Aim 2, the investigators plan to identify the specific boundary conditions under which visual serial dependence impacts tumor search in radiology. In Aim 3, once the investigators fully understand these boundary conditions in Aim 2, they will propose a series of task and stimulus manipulations to control and mitigate the deleterious effects of visual serial dependence on tumor search. As a result of these manipulations, visual search performance should improve in measurable ways (detection, classification, position, speed). Aim 3 is particularly crucial because it will allow the investigators to propose new guidelines which will greatly improve tumor recognition in x-ray images, making this task even more effective and reliable. Taken together, the proposed studies in Aim 1, 2, and 3 will allow the investigators to establish, identify, and mitigate the deleterious effect of serial dependencies in radiological search tasks, which could have a significant impact on the health and well-being of patients everywhere.
Dementia is a term used to describe a collection of symptoms including memory loss, problems with reasoning and communication, and a reduction in a person's ability to carry out daily activities. The most common types of dementia are: Alzheimer's disease, vascular dementia, mixed dementia and dementia with Lewy bodies. Clinicians and families are looking for ways to deal with this challenging group of diseases to improve quality of life, reduce depression and agitation for individuals in long term care (LTC). There are a variety of non-pharmacologic interventions for dementia often used in addressing physiological and behavioral challenges, new to this category of treatment is virtual reality (VR). Virtual reality has been studied in mild cognitive impairment. Colleagues completed a systematic review of non-pharmacological intervention to treat older people with dementia and found music to be the only intervention effective, VR was not included as no studies were found. The Registered Nurses Association of Ontario report non-pharmacological approaches are an important alternative to the use of antipsychotic medications. They recommend health-care providers should consider non-pharmacological interventions wherever possible as a first-line approach to the management of BPSD. Virtual reality as proposed in this research will include music, library items will be selected that are person specific, and will provide sensory stimulation. To date there is no published research on the use the VR in moderate to severe dementia in LTC, looking at depression.
Bladder and Prostate Sonomorphology in Patients With Symptomatic Benign Prostatic Hyperplasia?
The study involves the development and testing of an artificial intelligence (AI) tool that can identify abnormalities using patient head scans conducted for routine clinical care and research volunteer scans. A deep learning algorithm will be developed using a dataset of retrospective and prospective MRI head scans to train, validate, and test convolutional networks using software developed at the Department of Biomedical Engineering, King's College London. The reference standard will be consultant radiologist reports of the MRI head scans.
A single-arm, open-label study to evaluate the efficacy and safety of Acetylcysteine plus high-dose Dexamethasone in adults newly diagnosed with primary immune thrombocytopenia (ITP).
The purpose of this study is to validate the Brain Injury Self-Efficacy Scale as a measure of self-efficacy in brain injury by comparing it with other measures of self-efficacy, the GSE, and PROMIS self-efficacy.