View clinical trials related to Airway Inflammation.
Filter by:To investigate and compare the value of FeNO, blood Eos, serum TIgE in predicting the airway eosinophilic inflammationin chronic cough, asthma and COPD.
This is a randomised, active-comparator, open-label, parallel-group, multicentre phase IV exploratory study to characterise changes in airway inflammation, symptoms, lung function, and reliever use in asthma patients using SABA (salbutamol) or anti inflammatory reliever (SYMBICORT®) as reliever medication in addition to SYMBICORT as daily asthma controller. Eligible patients diagnosed with asthma at least 6 months prior to the Screening Visit (Visit 1) and fulfilling all of the inclusion criteria and none of the exclusion criteria will continue into the Run-in Period. At Visit 2, patients will be assessed for randomisation criteria and, if met, will be randomised to receive either SYMBICORT as maintenance and reliever treatment or SYMBICORT as maintenance treatment and salbutamol as reliever treatment in a 1:1 ratio. Randomisation will be stratified by the patient's ongoing dose of inhaled corticosteroids [(ICS) low or medium] or long-acting β2-agonist (ICS/LABA) at study entry
Deployment of military personnel has been associated with increased respiratory illness likely due, in part, to inhalation of unusual particulate matter (PM), such as from burn pits. Inflammation is a key initial response to inhaled particulates. The researchers have developed a protocol using inhaled wood smoke particles (WSP) as a way to study PM-induced airway inflammation. Exposure to wood smoke particles causes symptoms, even in healthy people, such as eye irritation, cough, shortness of breath, and increased mucous production. The purpose of this research study is to see if an oral steroid treatment can reduce the airway inflammation caused by the inhaled WSP. The exposure will be 500 µg/m³ of WSP for 2 hours, with intermittent exercise on a bicycle and rest. The wood is burned in a typical wood stove and piped into the chamber.
Deployment of military personnel has been associated with increased respiratory illness likely due, in part, to inhalation of unusual particulate matter (PM), such as from burn pits. Inflammation is a key initial response to inhaled particulates. The investigator has developed a protocol using inhaled wood smoke particles (WSP) as a way to study PM-induced airway inflammation. Exposure to wood smoke particles causes symptoms, even in healthy people, such as eye irritation, cough, shortness of breath, and increased mucous production. The purpose of this research study is to see if a single treatment of inhaled hypertonic saline (HS) can diminish this PM-induced airway inflammation by rapidly clearing the WSP inhaled particles from airway surfaces. The exposure will be 500 ug/m³ of WSP for 2 hours, with intermittent exercise on a bicycle and rest. The wood is burned in a typical wood stove and piped into the chamber.
Purpose: To determine the efficacy of 1400 mg gamma tocopherol-enriched supplement for mitigating inhaled wood smoke particle-induced airway inflammation in healthy adults with no more than mild asthma.
Purpose: This screening protocol is designed to assess PMN (neutrophil) responsiveness to wood smoke particles (WSP) and the effect of the GSTM1 null genotype on this response. The researches will identify persons responsive and resistant to the inflammatory effect of WSP. It is anticipated that the GSTM1 genotype will be a risk factor for increased response to WSP.
Background: - Individuals who have severe asthma that is not easily controlled by current treatments are in need of new treatments to prevent potentially life-threatening asthma attacks. Experiments in mice have found that a medication called pioglitazone hydrochloride (Actos ), which is used to treat patients with diabetes, may be effective for treating severe asthma. Researchers are interested in determining whether Actos is effective in improving the quality of life in subjects with severe asthma who continue to have symptoms despite maximum standard medical therapy. Objectives: - To assess the effectiveness of pioglitazone hydrochloride as a treatment for patients with severe asthma that is not controlled by standard treatments. Eligibility: - Individuals between 18 and 75 years of age who have been diagnosed with and treated for severe asthma for at least 1 year. Design: - Potential participants will have a screening visit to determine eligibility for the study. The visit will involve breathing tests, chest x rays, heart and lung monitoring, and blood tests. - Eligible participants will have a full medical history and will answer a series of questionnaires about their quality of life with asthma. - Phase 1: Patients will record lung function and asthma symptoms morning and evening for 4 weeks. At the end of this period, patients will be evaluated with breathing, allergy, and blood tests, as well as questionnaires. Patients will also provide a sputum sample. - Phase 2: Patients will receive regular doses of either pioglitazone hydrochloride or a placebo for 16 weeks. Patients will return to the National Institutes of Health every 4 weeks for tests. - Phase 3: Wash-out period without study drugs for 4 weeks, similar to Phase 1. - Phase 4: Patients will receive regular doses of either pioglitazone hydrochloride or a placebo for 16 weeks. Patients who received placebo will be given the study drug, and vice versa. Patients will return to the National Institutes of Health every 4 weeks for tests. - Phase 5: Medications will be stopped, and patients will return to the National Institutes of Health 4 weeks later for final tests.
The investigators hypothesize that aerobic training can reduce anxiety, depression and airway inflammation and those benefits may be related to changes in autonomic system.
This study will evaluate the effects of inhaled fluticasone on cell counts and inflammatory mediators measured in sputum of healthy volunteers following exposure to inhaled lipopolysaccharide.
The purpose of this study is to examine biological pathways of altered blood vessel function resulting from breathing airborne particulate. Blood artery function in healthy men will be measured after particulate exposure either on placebo or on an asthma medication that stops production of an inflammatory biological agent. Lung and blood profiles will be obtained before and after exposure to exhaust fumes. We believe that the inflammatory agent produced by the lungs from breathing these particles causes abnormal artery function.