View clinical trials related to Asthma.
Filter by:This study will assess the change in the expression of FcεRI receptors of blood basophils and dendritic cells after 16 weeks of treatment with omalizumab as compared with placebo, in adult patients with non-atopic severe persistent asthma, uncontrolled despite optimal therapy.
Respiratory diseases including Asthma are high prevalent among preschool children. Specific treatment, nowadays, include steroid inhalers and anti leukotrienes. It is known that the amount of the drug reaching small airways and lungs is bigger how much smaller the particles liberated by inhalers. Beclometasone is being used for treating asthma for 30 years. Lately emerged a new presentation of beclometasone, which liberates particles as small as 2.1 µg, that is supposed to reach the small airways at higher concentrations and be more suitable to patients who don't cooperate properly to the procedure of inhalation. The investigators' group has reported successfully the possibility to perform Pulmonary Challenge tests (adenosine, methacholine and exercise) in tender age. Other studies reported relation between asthma control and reduction in airway hyperreactivity. The purpose of this study is to evaluate the efficacy of Beclometasone dipropionate - Qvar to reduce airways hyperreactivity in preschool children, as demonstrated by adenosine challenge test.
Given the strong inhibition of SCH 527123 on neutrophil migration to sites of inflammation, there is a theoretical reason for its use in patients with severe asthma where neutrophils are thought to play a significant role in the pathophysiology of the disease.
The investigators propose to test the hypothesis that a home-based asthma intervention, the Wee Wheezers program, delivered by the Community Health Workers and tailored to the needs of the investigators community, will improve anti-inflammatory medication adherence, parental asthma knowledge and management behaviors, which in turn will reduce asthma morbidity (defined as days with asthma symptoms) and health care utilization (defined as asthma-related Emergency Department visits) among low-income, minority children with persistent asthma in the Bronx.
Omalizumab is an anti-IgE recombinant humanized monoclonal antibody.The efficacy and tolerability of omalizumab have been demonstrated in patients with moderate-to-severe and allergic (IgE-mediated) asthma. Clinical benefit with omalizumab is observed when serum free IgE levels are reduced to 50 ng/mL or less. However, although the causal role of IgE in allergic disease is well established, the relationship between free IgE and clinical symptoms of asthma has not been accurately quantified. Recent study demonstrated that omalizumab and free IgE concentrations are correlated with clinical outcomes. In non responder to omalizumab the clinical symptoms show random fluctuations around baseline without any tendency toward improvement despite adequate suppression of free IgE. In these patients it may be the ratio of specific IgE to total IgE or inter-patient variability in the expression of FceRI on effector cells that define whether the patient will respond or not to omalizumab. This current study is designed to evaluate the mechanisms of responsiveness to omalizumab measuring the free IgE, specific IgE and the level of FceRI expression on the effector cell and the correlation to clinical response.
The study is part of a research programme into mechanisms of asthmatic airway obstruction, focusing on the role of lipid mediators such as the prostaglandins. To this end the effect of a non-steroidal anti-inflammatory drug, the selective COX-2 inhibitor etoricoxib, will be evaluated in the allergen challenge setting in twelve subjects with intermittent allergic asthma. Active treatment for 10 to 13 days will be compared with an identical study period with no treatment in a cross-over, randomised design. Rising dose allergen challenges will be performed on three occasions to assess possible changes in airways responsiveness. Sampling of blood, urine, saliva and sputum will be done to allow for analyses of the production of prostaglandins and other lipid mediators, of the efficacy of COX-2 inhibition as well as of regulation of immune cells. It is hypothesized that inhibition of COX-2 by virtue of inhibition of bronchoprotective prostaglandin E2 leads to a slightly exaggerated airway response to allergen exposure.
Background: Increased serum high sensitivity C-reactive protein (hs-CRP) has been associated with airway inflammation in asthma and may serve as a surrogate marker for the presence of airway hyper-responsiveness (AHR) in this set-up. This study was designed to evaluate the predictive value of hs-CRP for AHR assessed by metacholine challenge test (MCT), in adults with suspected Asthma.
This study primary objective is to compare the impact of two products containing budesonide and formoterol as individual capsules with inhalation powder for the pulmonary function of subjects with persistent asthma.
Previous studies have shown potentially higher exposure to fluticasone furoate in Japanese subjects compared with Caucasian subjects. The reasons for these potential differences are unclear. Therefore this study is being done to look at and compare how fluticasone furoate is processed by the body in healthy Caucasian, Japanese, Korean and Chinese subjects after inhaled and intravenous administration. The data obtained will be used to help in the clinical development of the drug in Japanese and other East Asian populations.
The purpose of this study is to show whether mepolizumab given every 4 weeks intravenously (i.v.) can reduce the frequency of asthma exacerbations in subjects with severe asthma despite receiving high doses of standard asthma medications. The study will look at different doses of mepolizumab in comparison to a placebo.