View clinical trials related to Asthma.
Filter by:The purpose of this study is to determine whether disease management program is effective in preventing acute exacerbations in patients with unstable chronic obstructive pulmonary disease (COPD) or asthma.
The purpose of this study is to find out if Symbicort® (budesonide/formoterol), a new combination asthma medication, is more effective than budesonide alone in controlling exercise induced asthma. The investigators hypothesize that in children and adults who suffer from asthma and exercise induced asthma there will be less decline in lung function associated with exercise when they receive the study medication.
It is unknown whether surgical treatment of chronic sinusitis improves asthma control in patients with poorly controlled asthma. This is a randomized trial of surgical plus medical sinus therapy versus medical therapy alone.
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.
A Breath-Actuated Nebulizer is a newer type of nebulizer device that creates aerosol only when a patient is inhaling, rather than creating aerosol continuously. It is thought that breath-actuated nebulizer devices may deliver asthma rescue medications to patients' lungs more effectively and therefore lead them to recover from asthma attacks faster than conventional continuous-output nebulizer devices. This study compares outcomes including hospital admission rates, number of nebulized treatments required, and patient/family satisfaction when a breath-actuated nebulizer device versus a conventional continuous-output nebulizer is used to deliver asthma medications to pediatric asthma patients in the emergency department.
The main objective of this study is to evaluate the efficacy and safety of the Armstrong's Epinephrine HFA-MDI (E004) formulation, in comparison to the Placebo (Placebo-HFA) and an Active Control (Epinephrine CFC-MDI), and to identify the optimum E004 dose strength(s) for the ensuing pivotal clinical trials. The study will be conducted in adult patients who have intermittent, or mild-to-moderate persistent, asthma, but are otherwise healthy. The bronchodilatory efficacy of E004, is evaluated in terms of post-dose area under the curves (AUC) of FEV1 changes (% and volumes), from the pre-dose baseline values, in comparison to the Placebo Control and the Active Control.
Obesity is associated with increased airway inflammation and asthma severity that results in suboptimal control of asthma despite therapy with high dose inhaled corticosteroids (ICS). The investigators suggested that the addition of Singular (montelukast)[LTRA] to moderate doses of inhaled corticosteroids will improve asthma control. This cross over study will be treat subjects with moderate dose ICS/LTRA for 12 weeks and high dose ICS with placebo for 12 weeks.
This trial will test the efficacy and safety of ramelteon, a selective melatonin agonist, on patients with insomnia comorbid with asthma.
We are proposing to test the safety of the probiotic, VSL#3, in a placebo controlled double blind safety study in 30 asthmatic adults. This adult safety trial was requested by the FDA IND review of a pediatric asthma protocol. Adults with a doctor diagnosis of persistent asthma will take VSL#3 or placebo twice daily for 3 months. Data will be collected, including age, race, height, and weight, present medications, past medical history with emphasis on signs/symptoms of asthma. On visits to the clinic we will evaluate - Changes in lung function - Intestinal permeability - Intestinal bacteria - Levels of inflammation in the blood - Women will have repeat urine pregnancy testing at each clinic visit
A randomised, double-blind, placebo-controlled, parallel group study to evaluate the effect of treatment with GSK2190915, a FLAP inhibitor, as add-on to current inhaled corticosteroid therapy in patients with moderate to severe asthma with elevated sputum neutrophils.