View clinical trials related to Lung Diseases, Obstructive.
Filter by:Chronic obstructive pulmonary disease (COPD) is the fourth most common cause of death and the only one of the common causes that is still rising. The main effects of the disease are the destruction and inflammation of lung tissue rendering breathing difficult. COPD has significant effects on the quality of life of sufferers and the disease is predicted to be the fifth most common cause of disability in the world by 2020. Patients with COPD are prone to periods of worsening disease symptoms, known as exacerbations, which are often caused by viral and bacterial infections of the lung and current vaccines appear to have little efficacy in limiting these exacerbations. The loss of lung function caused by infectious exacerbations is irreversible and patients who frequently exacerbate experience more rapid disease progression. Nontypeable Haemophilus influenzae (NTHi) is a major bacterial species that colonises the airways and causes exacerbations in COPD. With the development of more sensitive molecular techniques it has been possible to ascertain that it is the acquisition of new strains of NTHi that correlate strongly with exacerbations. However, not all patients with COPD have NTHi in their lungs and the question remains as to why some COPD patients are susceptible to such infections. This study aims to answer this question by comparing the airways of COPD patients who are colonized by NTHi and those who are not to analyse whether the levels of protective antibodies in the lungs and the function of the immune cells in the NTHi colonized airway are reduced. Moreover, we aim to correlate this reduction in immunity with areas of lung damage ascertained by high resolution computed tomography. The aim of this research is to better understand this apparent deficiency in airway immunity as this is likely to impact on vaccine efficacy in COPD.
The study purpose is to evaluate the effect of QAB149 - NVA237 vs. QAB149 on static lung hyperinflation.
This is an observational study in primary care aiming to validate biomarkers for chronic obstructive pulmonary disease (COPD).
The purpose of the study is to provide long term safety data of NVA237. This study will assess the safety and tolerability of a single dose strength of NVA237.
The overall objectives of our study are to determine the capabilities of hyperpolarized 129Xe MRI to measure lung function and its potential to sensitively detect pulmonary disease and its progression in COPD. We hypothesize that measurement of alveolar surface area, septal thickness, and capillary transit time measured with hyperpolarized 129Xe will correlate better with quality of life measures in COPD subjects than traditional diagnostic measures such as spirometry and Computed Tomography.
The aim of this study is to investigate the development of partial pressure of carbon dioxide during the 6-min walking test and during night in Chronic Obstructive Pulmonary Disease (COPD)-patients (GOLD stage IV). Therefore the partial pressure of carbon dioxide, oxygen saturation and the heart rate are registered by a device called "Sentec" during the mentioned periods. In addition a measurement of activity is realised by an activity monitor ("Sensewear").
FEELBREATHE®, a nasal ventilatory restriction device, used during an exercise test in treadmill produces changes on breathing efficiency in patients with Chronic Obstructive Pulmonary Disease (COPD). 20 men with COPD with a forced expiratory volume in the first second between 30% and 70% of its predicted value were selected. Then, a maximal incremental cardiopulmonary exercise test was performed to determine ventilatory and cardiac parameters. During the second day, each participant conducted two tests with 30 min of rest between them. Exercise protocol was an identical walk on a treadmill for 10 minutes at a constant rate at 50% of VO2peak. Each test was performed randomnly in two different conditions: 1) oronasal breathing (ONB); and 2) nasal breathing through the FB.
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease of the bronchi with an increasing prevalence. By 2020, the mortality related to COPD is expected to become the 3rd leading death worldwide. COPD is caused by smoking in approximately 90 % of the cases. Nevertheless, COPD remains under-diagnosed and more than half of patients remain active smokers. Brittany is the second region of France facing an abnormal high death rate related to COPD. Smoking cessation is the most effective therapeutic approach to reduce the evolution of the disease, the frequency of the exacerbations and the the mortality. Besides, smoking cessation is associated with a reduced risk of cardiovascular events and cancer. Given the COPD patients' strong addiction, smoking cessation is not easily obtained in such population. Furthermore, smoking cessation has been underestimated in several studies. Most of these studies evaluated various methods of smoking cessation in COPD patients performed after an exacerbation, which has a hospitalization related mortality of approximately 10%. Thus, there is an urgent need to find effective pharmacotherapies to help COPD patients to cease smoking. Varenicline, a partial agonist at a4ß2 nicotinic acetylcholine receptors is reported to be one of the most effective pharmacotherapies for smoking cessation. However, it has never been evaluated at the acute phase of an exacerbation of COPD requiring hospitalization.
Exercise intolerance is a major complain of patients with chronic obstructive pulmonary disease (COPD). Dynamic hyperinflation has been recognized as an important limiting factor responsible for the appearance of intolerable dyspnea during exercise. Regular treatment with long-acting bronchodilators promotes a more sustained reduction of hyperinflation and consequent symptom relief and increase in the patient's ability to overcome physical demands of daily life. Tiotropium bromide (TIO) is a new generation, long-acting anticholinergic bronchodilator that significantly improves lung function, reduces symptoms and improves exercise tolerance in patients with advanced COPD. Indacaterol is a new ultra-long duration (>24 h) β2-agonist, which promotes sustained dilation of the bronchi with a once-daily administration. Compared to tiotropium, indacaterol provides evidence that is as effective as tiotropium for bronchodilation, as well as other clinical outcomes such as dyspnea and state of health. However, comparative effects of indacaterol versus tiotropium with regard to outcomes in tolerance, dyspnea and dynamic lung hyperinflation during exercise is scarce. We hypothesized that indacaterol and TIO are not different in terms of exercise tolerance and its determinants (dynamic hyperinflation and dyspnea).
Airway remodelling is an abnormal tissue repair following bronchial inflammation, which contributes to none reversible pathological features, such as bronchial and peri-bronchial fibrosis. It also influences the prognosis of Chronic Obstructive Pulmonary Disease (COPD) and its mechanisms remain largely unknown. The role of fibrocytes has been demonstrated in the pathophysiology of asthma, lung fibrosis or pulmonary hypertension. However, the recruitment of blood fibrocytes and their involvement in COPD airway remodelling remain unknown. The main objective of the study is to analyse the distribution and quantify the number of the peri-bronchial and blood circulating fibrocytes in patients with different stages of COPD compared to control subjects.