View clinical trials related to Asthma.
Filter by:The specific hypothesis for this study is that there are fundamental differences in T effector and T regulatory cell responses in the lung to allergens in allergic asthma (AA) when compared to allergic nonasthmatics (ANA) that account for the difference in clinical responses. We will address this by comparing T cell responses in AA versus ANA subjects. These experiments will correlate T cell responses with measures of airway physiology using state-of-the art lung imaging and examine mechanisms controlling T cell activation in the airways of AA and the function of airway T regulatory cells during AA.
Cat allergies are a major trigger of asthma. Therapies are being developed to control the allergic response to cats. We are interested in measuring a type of white blood cell which is linked to cat allergies, which will help us understand how to use new therapies in people who suffer from cat allergies and asthma. We will study cat-allergic individuals with stable, mild asthma who will be exposed to cat allergens. We will measure various white blood cells, including the cells that are linked to cat allergies, to determine whether the number of these cells changes following cat exposure. These cells will be measured from the blood and bone marrow by removing samples using a needle. These cells will also be measured from the lungs by inserting a bronchoscope into the airways and drawing up fluid containing cells. This study will improve our understanding of the harmful versus protective role of these cat-specific cells, and will allow for development of better drugs for treatment of asthma triggered by cat exposure.
The purpose of this study is to determine the type and degree of inflammatory parameters in peripheral blood of asthma patients compared to analysis of induced sputum. 115 asthma patients visiting the outpatient clinic of the University Medical Center will be included. Blood samples are obtained and sputum induction is performed. Hypothesis: in asthma the analysis of type and degree of inflammation in peripheral blood by changes in phenotypes of leukocytes is at least as reliable as analysis of cells obtained from induced sputum
Asthma is a frequently occurring inflammatory lung disease that affects the whole bronchial tree including the small airways (<2mm). Since the introduction of the solution hydrofluoroalkane (HFA) technology it is possible to generate medication with small particles of approximately 1-2 μm, and therefore to reach the small airways. However, at this moment the investigators have no reliable instruments to identify the asthmatic subjects who particularly benefit from treatment with inhaled small particles. Recently the investigators research group investigated whether provocation with small and large particles AMP is able to identify responders and non-responders to treatment with small and large particles of inhaled corticosteroids. This provocation technique gave promising results but needs further optimization. The aim of this study is to determine the optimal particle size of dry powder adenosine to assess small airway involvement in asthma. Secondary, to provide insight in the associations between the standard test, executed with nebulized AMP, and the new test, executed with dry powder Adenosine.
To provide the efficacy, safety and pharmacokinetics of indacaterol acetate in patients with persistent asthma to support dose selection of indacaterol in fixed dose combination QMF149.
The purpose of this study is to investigate the safety of different doses of sublingual tablets of house dust mite allergen extracts in adults with house dust mite-associated allergic asthma.
The Acetaminophen Versus Ibuprofen in Children with Asthma study will test the primary hypothesis that in preschool children 12-59 months of age with persistent asthma on standardized asthma therapy, the number of asthma exacerbations requiring systemic corticosteroids will be more frequent in children randomized to receive acetaminophen as compared to those randomized to receive ibuprofen on an as needed basis for fevers and pain.
The INFANT study will test whether, in preschool children 12-59 months of age with persistent asthma, the following Step 2 asthma therapies will provide similar degrees of asthma control: 1. Daily inhaled corticosteroid (ICS) treatment, 2. Daily leukotriene receptor antagonist (LTRA) treatment, and 3. As-needed ICS plus short-acting beta agonist (as-needed ICS/SABA) rescue treatment.
This study will evaluate the safety, tolerability and efficacy of a single dose level of KB003 in subjects with inadequately controlled asthma.
The investigators are doing this research study to find out if giving a drug called prasugrel, which is used to prevent blood clots, can reduce reactions to aspirin in people with aspirin exacerbated respiratory disease (AERD), and to learn why taking aspirin every day can work as a treatment for people with AERD. People with AERD have symptoms of asthma, severe runny nose, polyps in the nose, and develop allergic reactions if they take medications like aspirin. People with AERD can be desensitized to aspirin in order to be able to safely use it daily, but the investigators do not know if prasugrel may prevent reactions to aspirin and provide a safer way for people with AERD to tolerate aspirin. The investigators also want to understand what is different about the cells and urine from subjects who have AERD, in comparison to subjects who have asthma but do not have AERD and subjects who have allergic rhinitis but do not have asthma. Lastly, the investigators want to understand how aspirin acts differently in subjects who have AERD, in comparison to subjects who have asthma but do not have AERD.