All clinical trials

The purpose of this research study is to investigate the link between age-related macular degeneration (AMD or ARMD) and coronary artery disease (CAD). Age-related macular degeneration is a medical condition which may result in blurred or no vision in the center of vision. Coronary artery disease is a blockage of one or more arteries that supply blood to the heart. The study will specifically look at the macular changes that occur in the retina, which is the sensory membrane that lines the inner surface at the back of the eyeball, and the relationship between coronary heart disease and the risk factors.

Precise measurement of diaphragm function is difficult. Several methods exist. No are sufficiently validated. With this study, the investigators wish to investigate the validity of different ultrasound and radiological methods and compare them with inspiratory pressure measurements.

Bronchiolitis obliterans (BO) is the well-known manifestation of the chronic pulmonary graft-versus-host disease(GVHD) after allogeneic hematopoietic stem cell transplantation (HSCT). The pathophysiology of BO is, however, poorly known. The available data strongly support the role of respiratory viruses, in particular paramyxoviruses (parainfluenzae virus (PIV), respiratory syncytial virus, metapneumovirus). It is likely that the alloimmune response triggered by the respiratory virus is inadequate and leads to the peribronchiolar fibrotic process. The objective is to analyze the kinetics of profiles of the blood and respiratory host responses resulting from a high or low parainfluenza respiratory infection, in order to evaluate if the occurrence of a BO is associated with a specific signature We will evaluate the predictive signature of a BO after a parainfluenza virus infection by characterizing the differences between the patients evolving and those not evolving to a BO at 2 months after the infection.

To evaluate the influence of lead (pb) and cadmium (cd) seminal plasma level on embryo development and pregnancy rate during intracytoplasmic sperm injection (ICSI).

The study aims to study alterations of MTDH gene expression in the serum of bladder cancer patients compared to control group to evaluate its role as a marker for diagnosis. ,to compare the diagnostic accuracy of MTDH with the previously used marker Bladder Cancer-Specific Antigen-1 (BLCA-1 in the serum of bladder cancer patients . and to study correlation between expression of the metadherin gene and serum level of BLCA-1, and clinical and histopathological staging in patients with bladder cancer

Men aged over 18 having a first or second diagnostic prostate biopsy at the Royal Marsden NHS Foundation Trust or Epsom General Hospital may be invited to take part in one to one interview within 6 months of having the procedure done to talk about their experience

Prospective study, conducted at Tanta University Ophthalmology Department Measurement of macular and choroidal thickness before and after strabismus surgery

Our study was planned to investigate the reliability validity of the Movement Imagery Questionnaire- RS in acute stroke patients. For our study, the Turkish version of the Movement Imagery Questionnaire-RS will be established first. Then, the reliability and validity of the questionnaire in acute stroke patients will be examined. The study included 70 stroke patients hospitalized in the Stroke Unit of the Neurology Department of Hacettepe University Hospitals and individuals between 50-75 years of age who do not have any disease in Ankara.

Overall Goal: To study the outcomes of patients undergoing aortic valve surgeries, different approaches such as standard aortic valve replacement, aortic valve repair, novel techniques as Ozaki's procedure and their subsequent results and complications. Objective 1: Identify predictors of complications following different types of aortic valve surgery accordingly. Objective 2: Determine the value of each type in terms of advantages and disadvantages. Objective3: Assess outcomes such as postoperative life expectancy, hospital stay, prognosis and quality of life.

Insulin resistance and beta cell dysfunction are the major core defects responsible for the development of type 2 diabetes (T2DM). Although insulin resistance is the early metabolic defect detected in subjects destined to develop T2DM, it is the beta cell failure which is responsible for the development of hyperglycemia. Longitudinal and cross-sectional studies have demonstrated that, initially, the compensatory hyperinsulinemia is sufficient to offset the insulin resistance and maintain normal glucose tolerance. However, when the beta cell fails to adequately compensate for the insulin resistance, glucose homeostasis deteriorates. Initially, this is manifest as impaired glucose tolerance (IGT) and later as overt diabetes. It follows that the level of beta cell failure at which hyperglycemia becomes evident depends upon the prevailing level of insulin resistance. A more severe insulin resistance results in development of overt hyperglycemia at lower level of beta cell failure. The investigators previously have shown that the severity of insulin resistance varies amongst different ethnic groups (Arabs versus Indians). Thus, the level of beta cell failure at which overt hyperglycemia becomes evident amongst each ethnic group also varies. Thus, individuals/ethnic groups with more severe insulin resistance, overt hyperglycemia becomes evident at lower level of beta cell dysfunction. Conversely, severe beta cell dysfunction is required for evert hyperglycemia to develop in individuals/ethnicities with less severe insulin resistance. In the present study, the investigators aim to quantitate beta cell function with the gold standard technique (i.e. hyperglycemic clamp) in Arab and Indian non-diabetic individuals and relate the level of beta cell function to the prevailing level of insulin resistance measured as the glucose infusion rate divided by the mean plasma insulin concentration during the clamp.