View clinical trials related to Pulmonary Eosinophilia.
Filter by:Around 1/3 of patients with COPD have elevated eosinophil levels. However, the role of eosinophils in COPD has not been yet understood and is probably different in COPD and in asthma. The aim of this study was to assess the expression of selected surface markers on eosinophils and to assess the gene expression in eosinophils in COPD and asthma patients. We are planning to enrol 12 COPD, 12 asthma and 12 control subjects. Patients will undergo routine clinical assessment, spirometry, blood sampling and sputum induction. Eosinophils will be isolated from blood and sputum. Surface markers on eosinophils will be assessed in flow cytometry, gene expression will be assessed by RNAseq.
Advances in understanding the pathophysiology of asthma development and severity have pointed towards a prominent role of the bronchial epithelium, especially in more chronic and severe disease. Studies suggest that airway eosinophilic inflammation in asthma is linked to epithelial injury and structural changes of the airways, co called airway wall remodeling. Together the chronic airway inflammation and remodeling are associated with bronchial hyperresponsiveness, fixed airflow obstruction or progressive loss of lung function and clinical severity of asthma. Chronic rhinosinusitis with nasal polyps (CRSwNP), is another respiratory inflammatory disease often co-existing with severe asthma, sharing similar pathophysiology. The investigators hypothesize that epithelial barrier integrity may play a role in the pathophysiology of severe eosinophilic asthma and nasal polyposis and in response to anti-IL5 therapy of severe asthmatics, and that shedding of epithelial barrier proteins may be used as biomarker in the management of severe asthma. In order to study that, the investigators will conduct a prospective cohort study of adult severe asthmatics with/out CRSwNP, who live on the island of Crete, Greece and who meet the criteria for entering anti-IL5 treatment, as assessed by pulmonologist. The participants will be recruited with a convenience sampling in a period of 2 years, under real life conditions, and will be followed up for 1 year after treatment initiation. A control group of subjects diagnosed with nasal polyposis without severe asthma will be used. Eligible subjects will undergo clinical assessment with radiological (CT) and endoscopic investigations. Samples of serum, sputum, nasal secretions, as well as nasal and bronchial biopsies will be obtain for assessing clinicopathological differences among the 3 groups but also response to anti-IL5 therapy in SEA w/o CRSwNP.
Benralizumab is a humanised, afucosylated, monoclonal antibody against the interleukin (IL)-5 receptor (IL-5R) α subunit that induces direct, rapid, and near-complete depletion of eosinophils in blood, airway tissue, and bone marrow through enhanced antibody-dependent cell-mediated cytotoxicity (ADCC). This apoptotic process involves natural killer cells responsible for the controlled eosinophilic elimination. In the two pivotal phase III trials SIROCCO and CALIMA, benralizumab was well tolerated, significantly reduced asthma exacerbations by up to 51%, and improved lung function as well as disease control in patients with severe, uncontrolled asthma and blood eosinophil count of ≥ 300 cells/μL blood, receiving both ICS and LABA. According to the summary of product's characteristics (SmPC) of benralizumab in Russia, it can be used for an add-on maintenance treatment for adult patients with severe eosinophilic asthma. All patients enrolled in the BEST study will comply with the SmPC approved by the Russian Ministry of Health.
The goal of this study is to identify reliable, valid, easily measurable, interpretable, and useful biomarkers in peripheral blood and exhaled air by people with severe asthma for a more accurate description of the pathogenetic processes of asthma-related to the inflammatory endotype and the choice of biologic therapy.
The study aim is to look at the effect of the regular use of inhaled corticosteroids on the response and received from mepolizumab treatment which you are receiving or had received before.
Asthma is a chronic respiratory disorder characterized by bronchial inflammation and reversible bronchial obstruction. Severe asthma is an extremely heterogeneous disease, often associated with several comorbidities and risk factors. Severe uncontrolled asthma associated with bronchiectasis is an emerging phenotype. Several studies have attempted to establish an association between asthma and bronchiectasis. Mepolizumab, an Interleukin-5 (IL-5) antagonist, reduces exacerbations, eosinophils, and improves pulmonary function and asthma control. IL-5 is pivotal to eosinophils maturation and release from bone marrow, their subsequent accumulation, activation and persistence in the tissues. IL-5 therefore represents an attractive target to prevent or blunt eosinophils-mediated inflammation. The investigators hypothesize that eosinophils, stimulated by IL-5, play a crucial role in severe asthma and BE pathogenesis.
The purpose of this observational study is to describe the population of patients with SEA + NP who have been prescribed FASENRA and assess available clinical outcomes for both NP and asthma.
The IRIS study aims to investigate the way Mepolizumab affects the structure of the airway cells in patients with Severe Eosinophilic Asthma and how the immune function of these cells changes with treatment. The aim is to take samples of cells from the airways before starting Mepolizumab and after 6 months of treatment. These samples will be taken during a bronchoscopy (a camera test looking into the lungs) and we will analyse these cells in the laboratory. These investigations will allow us to better understand how Mepolizumab affects the cells within the airways.
This study is aimed at evaluation of the efficacy of mepolizumab 100 mg SC every 4 weeks in patients with severe eosinophilic asthma who have been treated for at least 12 months in several Polish allergy/asthma centres under the same protocol. Target population to be recruited has been set at 130 subjects from at least 6 asthma centers throughout the country. Data on dempgraphics and asthma status will be collected using questionnaires at 3 time-points: pre-MEPO, after 24 weeks of MEPO and after 1 year of MEPO administration (some of the outcomes will be observed every 4 weeks). Primary endpoints will include: - Asthma exacerbations measured at qualification for the treatment (in the period of previous 52 weeks) and at the 24th and 52nd week of the treatment. - Oral Corticosteroids use dose (documented at qualification for the treatment and at the 24th and 52nd week of the treatment).
Retrospective, multicenter, routine clinical practice study with consecutive inclusion of adult patients with severe eosinophilic asthma receiving benralizumab treatment.