There are about 25435 clinical studies being (or have been) conducted in United Kingdom. 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.
We want to find out what happens to reproductive hormone levels; Luteinising Hormone (LH), Follicle Stimulating Hormone (FSH), testosterone and oestradiol when kisspeptin is administered to people for a period of 8 days each month, using either placebo (saline) or kisspeptin in doses of 0.1, 0.3 or 1.0 nmol/kg/hour.
The present study aims to compare the relative therapeutic efficacy of prism adaptation therapy combined with real versus sham tDCS. The investigators will test the hypothesis that the magnitude and duration of neglect improvement will be increased when prism therapy is combined with real tDCS compared to sham tDCS. A second objective is to test whether individual differences in baseline clinical or brain imaging measures can predict: 1) neglect severity or 2) inter-individual differences in patients' therapeutic response. A third goal is to use brain imaging to characterize the patterns of neural change induced by the intervention to identify brain structures that mediate therapeutic response.
Our research is part of the global effort to develop a vaccine against HIV. We aim to develop a non-invasive, needle-free 'transcutaneous' vaccine. It will be a water-based solution which is placed on the surface of the skin of the upper arm, after the hairs have been stripped away. The active component of the vaccine - DNA which contains genes derived from the virus - will enter through the hair follicles from which the hair has been stripped. The DNA will get into cells, which will use the HIV genes to make copies of virus proteins. These proteins will stimulate the body's immune system and, we hope, make it able to protect against HIV infection. The research is to assess the safety of this approach, and how good it is at stimulating the immune system. We will combine the 'transcutaneous' vaccine with an 'intramuscular' version which is injected into the muscle of the thigh, and compare this combination with: intramuscular plus 'intradermal' (injection into the skin); and intramuscular with added 'electroporation' - use of a pulse of electricity to increase uptake of DNA vaccines. We will invite healthy men and women to take part in this research. Volunteers will first be assessed to ensure they are eligible to participate. A total of 30 will be enrolled and each will receive three vaccinations over the course of 12 weeks. We will assess the effects of the vaccinations by recording any symptoms experienced by the volunteers, and by analysing samples of their blood. The research will take place at the St Mary's Hospital campus of Imperial College London, UK. The DNA component of the vaccine is an experimental substance, so we will monitor very closely the wellbeing of the men and women who participate in the research.
Previous studies have shown that subjects who play video games are prone to consume larger quantities of food than subjects who are simply resting. This is believed to be due to the development of a stress response in the video games group, resulting in increased fuel metabolism. However, it was shown that the energy intake of the two groups showed no correlation with the subjects' appetite/hunger, which was identical in both groups. The investigators propose to explore this issue further by comparing the effects of different types of video games on metabolism, using a randomized controlled trial. In this study, they will compare the stress levels, heart rate, blood pressure, appetite/mood, energy consumption, grip strength, memory and saliva cortisol, leptin and ghrelin levels of subjects playing (a) competitive and (b) problem-solving video games. Measurements will be taken preceding, during and after the 1 hour intervention. Following the intervention, participants will be offered savoury and sweet foods/drinks, which will allow us to assess their appetite preferences and caloric intake. The investigators first aim is to determine whether there is a significant difference in stress levels, eating habits and energy metabolism in the two groups. Our second aim is to determine whether there is a difference in glucose distribution to the muscles and brain between the two groups.
Purpose: To examine the safety of omitting the routine postoperative eye clinic review following phacoemulsification cataract surgery. Background: Approximately 300000 cataract extractions are performed annually in the NHS in England, requiring a similar number of post-operative visits, the majority of which result in no change in management. A conservative estimate of 70% of visits being unnecessary suggests a potential saving to the NHS of approximately £10M annually. What's involved: The study involves some questionnaires during the duration of the study. These include questionnaires relating to the quality of life of the patient (conducted before the operation, and at the 3 month research clinic) and a patient satisfaction questionnaire. There is also a research clinic 3 months following the operation. What are the risks/benefits: There are no real personal benefits to patients on the trial. The trial aims to provide very important information regarding the safety of discharging patients immediately after surgery. However the trial could potentially save many thousands of unnecessary hospital visits each year.
The purpose of this registry is to compile characteristics of world-wide outcomes for the use of Boston Scientific's commercially available Vercise DBS System in the treatment of Parkinson's disease. The utilization of Image Guided Programming (IGP), and other commercially available programming features, used as planning tools for the programming of patients with Boston Scientific's Vercise DBS System are also evaluated. Additionally, the utilization of the DBS Illumina 3D feature that may be used for the programming of patients with Boston Scientific's Vercise DBS Systems is also evaluated.
Some patients with head and neck cancer or benign tumours of the head and neck receive radiotherapy to their neck as part of their treatment. The large arteries in the neck, the carotid arteries, are often included in the area being treated with radiotherapy. There is some evidence to show that radiotherapy to these blood vessels can result in thickening and furring of the artery walls some years after treatment. This thickening may then result in stiffening and narrowing of the artery. Current research is now aimed towards detecting radiotherapy-related changes to the carotid arteries at an earlier stage and towards using new radiotherapy techniques to avoid treating these blood vessels if possible. The question of whether or not the use of preventive medicines like aspirin and cholesterol-lowering tablets helps to reverse this process is currently unanswered. The aim of this study is to compare the thickness (intima-medial thickness) of the carotid artery wall over time (a period of 5 years) following radiotherapy to the thickness in carotid arteries that have not received radiotherapy. There are many other causes for thickening of arteries (such as high blood pressure, high cholesterol levels and diabetes) and these may affect the ability to measure the effect of radiotherapy change to the artery wall. In order to address this, it is ideal to look at this process in patients who are having only one side of the neck treated and use the other side as a comparison. The study will also be investigating for earlier signs of radiotherapy-related changes, such as stiffening of the artery wall, inflammation in the artery wall (a very early sign of radiotherapy-related change) and some markers in the blood that may indicate that this process is taking place. The null hypotheses of this study are: - In irradiated carotid arteries, mean intimal-medial thickness at one year following radiotherapy will be the same as in unirradiated arteries. - The incidence of carotid artery stenosis will be the same in irradiated and unirradiated carotid arteries - Arterial wall strain at one year following radiotherapy will be the same in irradiated and unirradiated carotid arteries. - Microbubble ultrasound will not be able to detect Inflammation in the carotid arteries during radiotherapy as an early marker of atherosclerosis; microbubble ultrasound will not demonstrate at what dose of radiotherapy inflammation begins. - Serum biomarker levels will not increase over time from baseline after radiotherapy and won't correlate to IMT and arterial strain.
This is a multi-centre, multi-national, prospective, observational study of Friedreich's Ataxia (FRDA) with a control group to: - obtain natural history data on individuals affected by FRDA - relate clinical assessments and results from proteomic analyses - expedite identification and recruitment of participants for clinical trials - develop and validate sensitive and reliable outcome measures for detecting onset and change over the natural course of FRDA which may also be potential outcome measures for use in future clinical trials and clinical care - plan for future research studies
Phase II and III studies have demonstrated IMRT to be safe and standard practice for head and neck cancers treated with radiotherapy. This study will be an extension to an earlier, in-house, trial to allow continued recording of toxicities and outcomes in patients receiving IMRT for head and neck cancers. This study will allow us to examine radiobiological modelling for normal tissue complication probability and in particular, determining the dose threshold for parotid glands. Our primary objective is to assess the potential effectiveness of intensity-modulated radiotherapy (IMRT) in reducing xerostomia in head and neck cancer patients and determining threshold dose for whole parotid gland and superficial lobes of parotid glands
This study will compare toric intra-ocular lens (IOL) with limbal relaxing incisions (LRI) in correcting astigmatism in patient undergoing standard cataract surgery. Astigmatism is unequal curvature of the eye; the eye is oval rather than spherical. Uncorrected astigmatism of greater than approximately 0.75 diopters (D) can cause visual blurring, ghosting of images or halos. Over 20% of patients undergoing cataract surgery have astigmatism which is likely to have been corrected by spectacles. Cataract surgery involves the replacement of the natural opacifying crystalline lens with a clear artificial plastic intra-ocular lens (IOL). The lens power can be selected to correct the patient's glasses prescription. The most widely used IOLs only correct glasses at one distance i.e. either near or distance. Residual astigmatism after cataract surgery will need glasses for correction which is undesirable for many patients. Limbal relaxing incisions (LRI) are circumferential partial thickness cuts to the clear window of the eye (cornea) during surgery. These LRIs can correct corneal astigmatism and have no additional risk of complications. Alternatively, toric IOLs are available which correct astigmatism inside the eye. They have been available for routine use in the last few years; technology has markedly improved and the lenses have become cheaper. Studies have suggested toric IOLs provide better vision after cataract surgery than the regular IOLs. Toric IOL are widely used in the private practice and increasingly in the National Health Service (NHS). LRIs are cost effective for treating astigmatism however their predictability is believed to be lower than toric IOLs. As there are no randomised controlled trials comparing the outcomes between LRIs and toric IOLs. This research will address this gap in knowledge and accordingly from this research future practice will be able to provide treatment to patients with information about the best outcomes.