There are about 5012 clinical studies being (or have been) conducted in Mexico. 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.
The investigators will take cerebral and subarachnoid biopsy by flexible endoscopy in patients without neurological findings. The investigators will use retrospective and prospective patients.
Vasculitis is group of diseases where inflammation of blood vessels is the common feature. Patients typically present with fever, fatigue, weakness and muscle and joint aches. These symptoms are very common among many different diseases, not just vasculitis. A clustering of other symptoms, physical examination findings, blood tests, radiology and biopsy help make the diagnosis. There are currently no criteria to help doctors make a diagnosis of vasculitis when a patient presents with these non specific symptoms and they are reliant on previous experience and disease definitions. One of the aims of this project is to develop diagnostic criteria for the primary systemic vasculitides (granulomatosis with polyangiitis (Wegener's), microscopic polyangiitis, Churg Strauss syndrome, polyarteritis nodosa, giant cell arteritis, Takayasu arteritis). We, the investigators, will do this by studying a large group of patients with vasculitis and comparing them to a large group of patients that present in a similar way, but do not have vasculitis. By comparing the 2 groups we will create a list of items to differentiate between vasculitis and 'vasculitis mimics'. We also aim to update the current classification criteria. Classification criteria are used to group patients into different types of vasculitis, once a diagnosis of vasculitis has been made, and are useful for studying patients in clinical trials with similar or identical diseases. The current classification criteria (American college of Rheumatology 1990 criteria) were developed 20 years ago, before the availability of some important diagnostic tests (e.g. antineutrophil cytoplasmic antibodies [ANCA]), and are now not consistent with some of the current disease definitions. Therefore to progress future research in vasculitis, it is important that the classification criteria are updated. We will recruit 260 patients with each of the 6 types of vasculitis and compare them with 1300 controls (patients with the 5 other types of vasculitis), in order to determine the optimal combination of symptoms, signs and investigations that classify each person into the appropriate group.
The purpose of the study is to evaluate the association between the number of circulating tumor cells and response to treatment in non small-cell lung cancer patients
The aim of this study is to evaluate if the intracoronary infusion of autologous bone-marrow derived CD133+ endothelial precursor cells is able to promote neovascularization and to improve myocardial perfusion and contractility in patients with refractory coronary heart disease, characterized by poor response to standard coronary interventions, severe impairment of the quality of life, and poor prognosis.
Background: A frequent manifestation of advanced lung cancer is malnutrition, timely identification and treatment of which can lead to improved patient quality of life, response rate to chemotherapy and survival. N-3 fatty acids, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), may possess anticachectic properties. This trial compared a protein and energy dense supplement enriched with n-3 fatty acids with nutritional assessment for their effects on weight, lean body mass (LBM), body fat, phase angle, dietary intake, inflammatory response and quality of life in first-line chemotherapy patients with advanced lung cancer. Methods: Chemonaive patients with stages IIIB and IV of lung cancer are going to receive Paclitaxel and Cisplatin. Patients will be randomized to receive two cans/day of EPA and DHA containing oral supplement or nutritional assessment one week prior to treatment until completing two cycles. Serum levels of Reactive C Protein (RCP), interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-alpha) are going to be measured baseline and after two courses of chemotherapy. Phase angle and body composition will be measured using Bioimpedance analysis (BIA). Quality of life, dietary intake will be assessed with validate questionnaires. All data is going to be collected in a database for further blind analysis. Written informed consent will be collected from all patients.
The purpose of this study is to determine whether low-doses alemtuzumab and rituximab combination are effective in the treatment of chronic graft-versus-host disease (GVHD) after first-line therapy failure.
This is a clinical trial to compare the benefits and possible adverse events of two antibiotic treatments for mild to moderate acne. It is expected that minocycline microgranules will be more effective than lymecycline with a better adverse events profile.
The purpose of this study is to determine the safety and efficacy of Vitreosolve® in diabetic retinopathy patients.
Nitroglycerin will increase the effectiveness of treatment with induction chemotherapy and concurrent chemo-radiotherapy by reducing chemo-radio resistance through an increased oxygen pressure in tumoral tissue. The combination treatment of nitroglycerin and chemotherapy will result in longer disease-free and over-all survival in patients with locally advanced NSCLC
The purpose of this study is to identify potential biomarkers that may predict the development of Alzheimer's disease in people who carry an Alzheimer's mutation.