View clinical trials related to Asthma.
Filter by:The purpose of the trial is to asses the efficacy and safety of sublingual annual immunotherapy in children with bronchial asthma and/or allergic rhinitis allergic to house dust mites.
The trial is designed to study the effects of soy supplements on asthma control.
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.
The specific aim of this proposed pilot study is to compare two standardized processes (paper and electronic) to deliver a customized MedlinePlus health information prescription.
The purpose of this study is to determine if intake of the antioxidant enzyme inducer, silymarin, will improve lung function and symptom scores in participants with asthma.
Sixty percent of patients with difficult to control asthma seen in our outpatient clinic are obese. The impact of weight reduction in this subpopulation of asthmatics has not been studied. Our aim is to evaluate the impact of weight reduction on asthma control of these patients.
This study will evaluate the effectiveness of an online Chronic Disease Self-Management Program for participants in Canada living with chronic health conditions. This pilot will look for improvements in health status, health behaviors and health care utilization.
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 purpose of this study if to investiagte the time course of PF-00258210 plasma concentration in the presence or absence of PF-00610335 administered via oral inhalation using dry powder inhalers
The purpose of this study is to improve patient care and safety while decreasing ED visit rates by sending specific information about care transitions related to hospital admission and discharge and emergency department and specialty care visits to primary care practices, care managers and patients with the use of health information technology (HIT) shared across a community-based network of providers. Cycle 1 focuses on the impact of notices about ED encounters and hospitalizations derived from billing data that are sent to care managers for all 47,000 patients in the Northern Piedmont Community Care Network (NPCCN). Cycle 2 explores the impact of letters sent to patients, and care event reports sent to a patient's medical home in addition to notices sent to care managers about ED encounters, hospitalization and specialty care based on ADT (Admission Discharge Transfer) and billing data on 4,600 patients with complex health needs.