View clinical trials related to Pulmonary Emphysema.
Filter by:The purpose of this study is to assess the procedural and post-procedural safety and efficacy of AeriSeal therapy at up to 4 subsegments during a single treatment session in patients with GOLD Stage III/IV homogeneous or heterogeneous emphysema.
CT studies considering bronchial dimensions in chronic obstructive pulmonary disease (COPD) were conducted without control of bronchodilation. Some data however suggest that total lung capacity (CT scan is performed after full inspiration) is increased in individuals affected by chronic or spontaneous bronchoconstriction and may decrease after bronchodilatation. Furthermore, no study has assessed the effect of bronchodilation on CT scans parameters reflecting airway remodelling and emphysema extent in COPD patients. This is a prospective study whose purpose is to assess the effect of bronchodilation on lung CT scan and pulmonary function testing (PFT) in COPD patients.
This study is to evaluate the expression of biological markers in induced sputum and peripheral blood T lymphocytes of patients with combined pulmonary fibrosis and emphysema (CPFE). The features of CPFE would be observed, including pulmonary function tests and fractional exhaled nitric oxide （FENO）.
The purpose of this study is to determine whether the cell therapy with bone marrow mononuclear cells is safe in the treatment of chronic obstructive pulmonary disease, specifically the pulmonary emphysema.
To establish and confirm the safety and clinical utility of BTVA applied unilaterally for lung volume reduction in patients with upper lobe predominate heterogeneous severe emphysema.
The purpose of this study is to evaluate the safety and efficacy of AeriSeal treatment in patients with advanced emphysema.
To assess the safety and efficacy of BTVA for the treatment of patients with heterogeneous upper lobe emphysema.
Cigarette smoking is the major risk factor for chronic obstructive pulmonary disease (COPD, commonly known as chronic bronchitis and emphysema). Despite this clear link, only 15-20% of smokers develop COPD suggesting that genetic factors affect the lung's susceptibility to the stress of cigarette smoke. The cells lining the airways (epithelium) and cells that help defend the lung (alveolar macrophages) of smokers develop gene expression changes that are different from that of nonsmokers. In the investigators' previous studies they have demonstrated that there are greater than 200 genes that are responsive to cigarette smoke in these cells. But the investigators do not know whether the gene expression is static or changes as a function of time. Genes that show significant changes over time may be relevant to the progression of the disease. Even though quitting smoking reduces the rate at which the lungs decline, many-smokers still go on to develop COPD. This study will provide insights into the natural history of smoking-related gene expression of the lung cells in health and disease.
This is a multi-center, open-label, non-controlled Pilot Study. Approximately 24 patients will be assigned to one of 3 treatment groups (8 patients each group). Patients in each group will receive 2, 4, and 6 (3 followed by a retreatment of 3) subsegmental treatments, respectively. All patients will receive treatment in a single lung under conscious sedation or general anesthesia. Patients will be followed for 24 weeks after completion of PLVR treatment(s). Upon completion of 12-week follow-up, all safety and efficacy data will be analyzed to determine an effective treatment dose. Thereafter, Group 1 patients may elect to be retreated at additional sites so that their total dose received is consistent with the effective dose. All study patients will receive standard medical therapy in addition to PLVR.
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