View clinical trials related to Asthma.
Filter by:Previous work has determined that there are significant differences in the communities of bacteria found in the airways of asthmatic patients compared to those found in the airways of healthy people. It is not yet clear if these bacterial communities are similar in all patients with asthma or if they are different in people with more severe asthma, with different types of asthma or between asthma patients taking different treatment. This is important to know as any differences in the bacteria present between groups may help to explain why people with asthma do not have the same features of disease. This research aims to determine if there are any differences in the number and type of bacteria found in the airways of asthmatic patients (1) with different severities of asthma and (2) who use different types of inhaled steroid treatment for asthma. We will do this by detecting the DNA of bacteria present in phlegm samples from these patients. We will also take measurements of the different components of asthma to see if the bacteria are different in people with different types of disease. As it is not yet clear if the bacteria detected in phlegm samples from one person may differ on different occasions, we will be taking more than one sample from some patients to see how similar this is over time.
Purpose: To determine the measurement properties of the asthma control test (ACT) in a prospective clinical study in an African American adolescent population.
To determine the measurement profiles of the asthma control test (ACT) in an adolescent population with persistent asthma.
The study aim is in two phases. First phase: to evaluate the influence of vitamin D deficiency on asthma severity, degree of airway obstruction and frequency of asthma exacerbations. Second phase: to evaluate if in patients with vitamin D deficiency (25-OH vitamin D levels below 20 ng/ml), vitamin D supplementation decreases the number of disease exacerbations.
The purpose of this study is to investigate exacerbations in severe asthma with regard to symptoms, lung function, aetiology and biomarkers.
The aim of this study is to assess the effectiveness of a CRTH2 receptor antagonist, OC459, in preventing or attenuating the worsening of asthma symptoms during rhinovirus infection. The study is a double blind, randomised trial in which half the subjects will receive OC459 and the other half placebo, before being inoculated with rhinovirus, that would normally induce a worsening of asthma symptoms i.e. an exacerbation.
The goal of this study is to identify a serum biomarker(s) that can detect increased levels of a population of CD15+ hypodense neutrophils termed low-density granulocytes (LDG) in the blood of patients with severe persistent asthma.
This study will determine the pharmacokinetic profile of the salbutamol concentration in the urine while athletes are resting or during exercise.
Mepolizumab is an anti-interleukin-5 ( IL-5) monoclonal antibody that neutralizes IL-5 and reduces eosinophil counts in both sputum and blood. Omalizumab an anti-immunoglobulin E (IgE) monoclonal antibody (mAb) is effective in the treatment of moderate to severe allergic asthma. The aim of this study is to investigate whether subjects not optimally controlled on their current omalizumab treatment, who are eligible for therapy with mepolizumab can be effectively and safely switched to treatment with mepolizumab to improve asthma control. The study will provide data on the efficacy, safety, immunogenicity, and tolerability of mepolizumab when switched directly from omalizumab without any wash-out. The learnings from this study may help guide physicians when substituting one biologic with another for the treatment of patients with severe eosinophilic asthma. The study will be a multi-centre, open-label single arm trial. Patients with severe eosinophilic asthma who are receiving omalizumab, but are not optimally controlled will be eligible to participate. Subjects will remain on their current maintenance therapy including omalizumab throughout the run-in period for a minimum of one week and up to 4 weeks. At Visit 2 (week 0) subjects will discontinue their omalizumab treatment and be switched to mepolizumab 100 mg subcutaneous (SC) every 4 weeks for 28 weeks. The treatment period is 32 weeks, including an Exit Visit/Early Withdrawal Visit, 4 weeks following the subject's last dose of mepolizumab.
The purpose of this research is to study the utility of using the HealtheRx as a tool to recruit eligible patients into the Pulmonary Research Registry (PRR) (IRB 15543B) at the University of Chicago. HealtheRx is an example of a potential recruitment tool that has high reach in populations typically underrepresented in research studies, uses a high tech infrastructure that allows matching of research opportunities to patient characteristics, but that delivers information in a low-tech, patient-centered mode using the printed HealtheRx prescription.