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.
Immature myeloid cells (IMCs) that are generated in the bone marrow, and differentiate into mature granulocytes, macrophages and dendritic cells (DCs) in the steady state. Recently, it was demonstrated that the IMC population expands in malignancy, both in animal models and in humans. These cells were described as immunosuppressants but have also been shown to promote tumor angiogenesis. Accordingly, IMCs were also found to take part in the burn injury wound healing process and other pathologies that involve angiogenesis. It was shown in the investigators' laboratory, that a very similar population of IMCs populates the mouse and human placenta, and that these cells actively promote angiogenesis. Dendritic cells (DCs) that can differentiate from IMCs, are antigen presenting cells (APCs) that initiate and coordinate the innate and adaptive immune responses. DCs can take up a diverse array of antigens and present them to T cells as peptides bound to MHC products. These antigen-specific responses are critical for resistance to infection and tumors. Conversely, DCs have roles in autoimmunity, transplant rejection and immunological tolerance. In the reproductive system, DCs were shown to account for 5%-10% of all hematopoietic cells in the uterine decidua at the embryonic implantation site. They were shown to promote angiogenesis during early pregnancy, especially during implantation. Very little is known about their function in the placenta and in the latter part of pregnancy when significant angiogenesis takes part. The investigators' preliminary mouse experiments and human data, demonstrate a shift in IMC/DC populations with the development of the placenta. The investigators hypothesize that this population shift may contribute to the labor and delivery process. The investigators' aim is to understand the role of these myeloid cell populations during pregnancy, to characterize their phenotype and try to shed light on the cellular and molecular mechanisms of pregnancy complications, such as preeclampsia, pre-term labor, intrauterine growth restriction, etc.
The ultrasound unit in Meir Medical Center developed new software to automated ovarian follicle count on the basis of 3D US. The investigators intent to evaluate this software at two steps: - To compared the abilities of the software to physician follicle count. - To evaluate with the software the antral follicle count, as expression to ovarian reserve at 3 different time of the month. The investigators believe that the software measurement of the small follicle can be better than the common antral follicle count that is use today, and by this accurate evaluation of the small follicle the investigators can evaluate the ovarian reserve at any time of the mount, and not only at the early follicular phase that use today.
Polycystic ovary syndrome (PCOS) affects 5-10% of women and is the most common endocrine syndrome.PCOS is associated with infertility, risk for obesity and type 2 diabetes. The elevated insulin characteristic of PCOS is likely to play a major role in its symptoms. restricted calorie High protein diet and mediterranean diet may improve insulin sensitivity and therefore lower androgen production in women with pcos women.the purpose of this study is to determine which diet is more effective in improving metabolic and reproductive outcomes.
The EGFR is one of the most frequently overexpressed proteins in various cancers including lung cancer, and is related to tumor progression and resistance to most treatments. New treatment strategies targeting EGFR have been developed: "although much work remains to be done, erlotinib has already established itself as part of the therapeutic armamentarium against cancer"(A review of erlotinib and its clinical use. Tang PA, Tsao MS, Moore MJ. Expert Opin Pharmacotherapy. 2006 Feb;7(2):177-93.) Noninvasive PET/CT imaging of EGFR expression activity and mutation status in NSCLC could aid in the selection of patients for individualized therapy with EGFR kinase inhibitors. Whole-body noninvasive PET/CT imaging could estimate treatment-responsive vs. -resistant tumor burden before the initiation of therapy with EGFR inhibitors. The purposes of the study are: 1. To adjust an optimal treatment for patients with tumors that have high expression of EGFR by identification of this type of cancer using C11-Erlotinib PET/CT during pretreatment work-up; as well as to follow up after treatment response. 2. To recognize patients with advanced pancreatic cancer responding to treatment with erlotinib and to distinguish them from non-responders.
The purpose of the proposed study is to examine the phenomenon of suicidality in old age and its unique characteristics. This will be performed through observing the multigenerational aging family from the life-course perspective, which enables the researchers to address life transitions, including crises leading to suicidal tendencies.
The purpose of this study is to evaluate the latency period (timing between the injection of the local anesthetic and the onset of complete sensory nerve block) of two approaches for ultrasound-guided popliteal sciatic nerve block: One of the approaches is the injection of the anesthetic just at the site of the bifurcation of the sciatic nerve and the other one is injecting the local anesthetic at least 2 cm beyond the bifurcation of the aforementioned nerve. Our main hypothesis is that the first approach will decrease the latency period, and probably, will increase the success rate of the nerve block as well as patient satisfaction.
Experimental studies suggest that anti-inflammatory and immunomodulatory drugs could reduce the inflammatory profile in acute ischemic disease and reduce the area of ischemia. Methotrexate is a drug that has shown promise in ischemic disease in animal studies.
Adjuvant chemotherapy (AC) for gastric cancer is known to improve prognosis, and longer time to AC is associated with worse survival. However, most clinical trials mandate that AC is still to commence within 6 to 8 weeks after surgery consideration for malnutrition, postoperative complications and intolerance of AC. Placement of jejunostomy nutrition tube for enteral nutrition is a common component of these procedures, as a result of superior postoperative organ function, decreased infection rates, and a greater likelihood to complete AC with enteral nutritional support. Fast-track surgery (FTS) recovery program focuses on enhancing recovery and reducing morbidity. Introduction of FTS concepts are safe, feasible, and can achieve shorter hospital stays and reduced costs. Early postoperative enteral nutrition combined with FTS results in reductions in total complications compared with traditional postoperative feeding practices and does not negatively affect outcomes. However, the benefit of jejunostomy nutrition tube routine placement and combination with FTS is still being debated. Besides, there remains some controversy over the optimal combination of nutrients and duration and timing and routes of feed administration. The aim of this study was to determine whether FTS with early jejunostomy nutrition (EJN) following laparoscopic gastrectomy for gastric cancer improved postoperative recovery and minimizes time to AC when compared with FTS with early oral nutrition (EON).
Elevated subconscious nervous system activity is a characteristic of the obese state and contributes importantly to the risk of heart disease and diabetes. This project will compare sympathetic nervous system activity and function in a group of obese persons with differing levels of sugar tolerance (normal, impaired and type 2 diabetic). Inter-relationships with insulin action, blood pressure, heart and kidney function will be determined before and after a 4-month weight loss and 3-month weight loss maintenance program. It is hypothesized that the transition from normal sugar tolerance to impaired sugar tolerance to type 2 diabetes will be accompanied by escalating sympathetic nervous system dysfunction. Furthermore, that weight loss will favorably improve sympathetic function, with greatest benefits occurring in those subjects who are insulin resistant with high blood insulin concentration.
Congenital Dyserythropoietic Anemia Type I (CDAI) is a recessive autosomal disease caused by ineffective erythropoiesis that causes Anemia & accumulation of iron due to increased absorption of iron in the intestine. The iron is being accumulated in the body & causes damage of the liver, heart & endocrine glands. The standard follow up of iron levels is done by ferritin blood test & although the test is not accurate it is the most available. Medical treatment to removal of iron excess from the body is given in ferritin levels of 500-1000. 3 drugs are approved in the market: - Deferoxamine, given subcutaneous during the night, 5-7 nights/week and therefore is less used today. - Deferiprone-given 3 times a day, is a weaker chelator, although it seems like it is good to give it in combination with one of the 2 other drugs because it removes the iron from the heart's cells better. A rare but severe adverse effect is Agranulocytosis. This drug is usually not given in childbirths. -The 3rd drug which is mostly in use today is Deferasirox, given once daily, but has also adverse effects, among them- damage of liver & kidney function, damage to the digestive system, hearing and seeing. Iron is being absorbed in acidic area, & thus drugs which decrease the acidity like hydrogen pump's inhibitors, can inhibit the absorption of iron, and indeed there are reports that these drugs decrease the absorption of iron and were used as treatment to hemochromatosis as well. Those hydrogen pump's inhibitors have also adverse effects. The rarest but most severe is intestine infection by Clostridium. In children, reports of adverse effects are minimal- mostly headaches & abdominal pains and nosocomial infections. In adults, there are reports of fractures, magnesium deficiency & vitamin B12 deficiency. All in all, the adverse effects are rare & uncommon.