View clinical trials related to Emphysema.
Filter by:A. Statement of Hypotheses: HIV-infected patients have an increased incidence of emphysema compared to non-HIV-infected smokers, and it has been hypothesized that this accelerated disease progression is the result of one or more latent infections that amplifies the pulmonary inflammatory response to cigarette smoke. Pneumocystis is one infectious agent that likely plays a key role in the development of HIV-associated emphysema. Colonization with Pneumocystis has been demonstrated in HIV-infected subjects, and HIV-infected smokers are particularly susceptible to Pc colonization regardless of CD4 cell count or use of prophylaxis. Pneumocystis colonization is also increased in non-HIV-infected patients with chronic obstructive pulmonary disease (COPD) and is directly related to the severity of the disease. The presence of Pneumocystis in the lungs, even at low levels as seen in colonization, produces inflammatory changes similar to those seen in COPD, with increases in the numbers of neutrophils and cytotoxic CD8+ lymphocytes. We propose that Pneumocystis accelerates emphysema in HIV-infected smokers by stimulating inflammation and tissue destruction. We will examine the role of co-infection with Pneumocystis in the pathogenesis of HIV-associated emphysema and the mechanism by which it causes emphysema progression. These studies will lead to information that will provide a rational basis for prevention and therapy of HIV-associated emphysema and provide a model for emphysema in the general population
Hypothesis: Patients with advanced emphysema with predominance of the disease in areas other than the upper lobes, as determined by high resolution computed tomography (HRCT), could have a positive response to valve treatment.
This study is being done to examine lung function changes in individuals with HIV infection and to understand why individuals with HIV have increased risk of lung damage from cigarette smoking.
Emphysema, a common type of chronic obstructive pulmonary disease (COPD), is a long-term lung disease that is usually caused by cigarette smoking. This study will examine both current smokers and former smokers who have emphysema, as well as current and former smokers who do not have emphysema, to determine if certain factors found in the blood are related to the risk of developing emphysema.
Chronic obstructive pulmonary disease (COPD) is a lung disease that is primarily caused by cigarette smoking. The breakdown of elastin, a protein found in the lungs, can cause lung damage and may contribute to the development of COPD. Some people may be more prone to elastin damage and in turn to developing COPD than others. This study will examine whether genetic factors are responsible for altering elastin function and increasing the risk of developing COPD.
The purpose of this study is to evaluate the safety and feasibility of the Chartis System in measuring air flow and pressures in isolated lung compartments in emphysema patients prior to endobronchial lung volume reduction (ELVR).
The objective of the present study is to establish the safety and efficacy of multiple administrations of Prochymal™(ex-vivo cultured human adult mesenchymal stem cells) in participants with moderate to severe chronic obstructive pulmonary disease (COPD).
The primary objective is to comparatively evaluate the isolated effects of a long-acting beta2-adrenergic (formoterol fumarate 12µg b.i.d. via Aeroliser) and combined with a long-acting anti-cholinergic (tiotropium bromide 18µg o.d via Handihaler) on breathlessness, dynamic hyperinflation and exercise tolerance in patients with advanced, but stable, chronic obstructive pulmonary disease. The study hypothesis is that combining long acting bronchodilators with different action mechanisms would promote synergistic effects on clinical outcomes.
This study is a continuation of the placebo-controlled study CE1226_4001 (NCT00261833) to evaluate the efficacy and safety of Zemaira® i.v. administration in subjects with emphysema due to alpha1-proteinase inhibitor deficiency. The long-term verification of a disease-modifying benefit of Zemaira® on the progression of emphysema will be assessed by volume-adjusted lung density, measured yearly by computed tomography (CT).
The purpose of the study is to evaluate the efficacy and safety of the 20 mL BLVR System in patients with homogeneous emphysema. Patients with upper lobe predominant emphysema initially screened for earlier Phase 2 studies but not enrolled before study enrollment closed are also eligible for participation.