Active clinical trials for "Asthma"

The purpose of this study to determine whether the bacteria inside the lungs of people with asthma can be modified (changed) if they are given an antibiotic and if this change is associated with an improvement in asthma symptoms.

This study will compare patients treated with a marketed medication and those who continue with their usual care to assess the proportion of patients achieving well controlled asthma after 24 weeks.

To evaluate and compare the expression and change in expression of key severe asthma targets at baseline in mile to moderate asthmatics vs. severe asthmatic subjects. To evaluate and compare the airway pathology at baseline and changes in airway pathology in relation to asthma severity.

Insomnia is commonly reported by adults with asthma. Insomnia can worsen asthma patients' quality of life and increase the risk for asthma attacks.This clinical trial will compare sleep and asthma control in adults with asthma and insomnia who receive either an internet-based intervention for insomnia or an educational video about insomnia.

Introduction. Despite adequate steroid therapy, a subpopulation of approximately 10% of asthmatics develops severe persistent airflow obstruction. It is now widely agreed that the latter is the consequence of a remodeling process of the airways, characterized by an increase in airway smooth muscle mass, mucus gland hypertrophy, increased thickness of the subepithelial basement membrane, extracellular matrix protein deposition, angiogenesis, fibroblast and myofibroblast accumulation. These phenomena are responsible for airway wall thickening and for decreased airway caliber leading to persistent airflow obstruction. Endothelin-1 (ET-1) is a small peptide, synthesized in the lung by airway epithelial and smooth muscle cells, as well as inflammatory cells. ET-1 induces bronchoconstriction, mediates eosinophils recruitment during allergic inflammation and contributes to airway remodeling by inducing fibroblasts and smooth muscle cells differentiation and proliferation. In a recent work from Inserm Unit 700, it has been shown that ET-1 was overexpressed in epithelial cells from severe asthmatic patients as compared to patients with less severe disease, and that ET-1 expression was strongly correlated with airway obstruction (measured by FEV1) and on bronchial biopsies with airway smooth muscle areas. In another study, we have shown that a polymorphism of the receptor for ET-1 was strongly associated with the degree of airway obstruction in a population of asthmatic patients. All these data suggest that inhibition of the ET-1 pathway could be a potential therapeutic option in patients with steroids refractory asthma and irreversible airway obstruction. Bosentan, a specific inhibitor of ET-1 receptors which is actually used in patients with pulmonary hypertension, improves survival and inhibits vascular remodeling. Aim and strategy. To study the impact on airway remodeling and clinical status of an antagonist of the endothelin receptors (Sitaxentan 100mg/day) over a 12-month period, in a prospective randomised placebo-controlled trial involving two parallel groups of 25 severe asthmatic patients with irreversible airflow obstruction (FEV1≤ 70% of predicted) . Various hallmarks of airway remodeling will be analyzed on bronchial biopsy specimens by immunohistochemistry and morphometry. These findings will be correlated with the results of pulmonary function tests. Twenty-five patients will be included in each group. Remodeling will be measured on bronchial biopsies performed during fiberoptic bronchoscopy at inclusion and after one year, by assessing smooth muscle area, submucosal fibroblasts count and basement membrane thickness. Every 3 months, bronchial obstruction (FEV1), clinical status, asthma exacerbations, steroids use, need for emergency care, asthma symptoms and quality of life will be assessed. Evaluation of airway inflammation will be assessed every 3 months by exhaled NO and induced sputum cytology. This proof of concept study will validate ET-1 as a new molecular target for treating airway remodeling in patients with severe asthma.

To test the hypothesis that stimulation of PPAR-γ receptors has a therapeutic role in the treatment of asthma.

Oral montelukast is helpful in chronic asthma. The purpose of this pediatric study was to investigate whether the addition of oral montelukast to standard therapy for acute asthma exacerbations results in further improvement in breathing function over three hours.

To determine if low levels of ozone (O3) encountered on a typical day in Chapel Hill will decrease spirometric values in mild asthmatics.

TriMaximize is a non-interventional study aimed to collect prospective data from asthmatic patients under routine care, for whom their treating physician has decided to prescribe BDP/FF/G (beclomethasone/formoterol/glycopyrronium).

This study aims to examine the effects of a digital game designed for respiratory training in childhood asthma. Fifteen children aged 8-14 years with asthma were included in the study. There were two groups a digital game group (n=9) and a control group (n=6). Respiratory training was given to the digital game group with a digital game. The control group was followed with medication. Both groups were evaluated at baseline and after 3 weeks.