Active clinical trials for "Asthma"

The purpose of the study is to follow the medical course of children with moderate to severe asthma and see how this relates to whether they have acid of non-acid gastroesophageal reflux

Asthma is a very common childhood chronic illness and is generally more severe in African Americans. The investigators attempted to determine whether a specific immune marker is associated with lung function and asthma severity.

The aim of this non-interventional study is to ensure that patients in routine clinical practice follow given treatment instructions and to evaluate the number of reliever inhalations as well as the number of patient/days with more than 8/12 total inhalations at any day. If the number of reliever inhalations and thus the received inhaled glucocorticosteroid dose is not excessive, the safety conclusions from the clinical studies can be extrapolated to real life for better acceptance of SMART (Symbicort Maintenance and Reliever Therapy).

The purpose of this study is to determine if a simple blood test can help in disease management, particularly asthma. This will be researched by looking at certain features of the blood and to compare asthmatics without allergies to those that have allergy-induced asthma.

An analysis of the costs and outcomes associated with hospitalization and treatment of Levalbuterol versus Racemic Albuterol in subjects with Asthma and COPD.

Summary: A picture is emerging of dendritic cells migrating through the blood to the airways following allergen inhalation in atopic asthmatics. Although the Koh and McCarthy articles present novel findings, both do not provide a comprehensive view of sputum DCs following allergen challenge. Therefore, the proposed study will examine the kinetics of mDCs and pDCs in the induced sputum of atopic asthmatics following inhalation of allergen. Hypothesis: Following allergen challenge, sputum myeloid and plasmacytoid DCs will migrate into the airway lumen in atopic asthmatics during the timeframe of the late asthmatic response. Objective: The objective of this study is to examine the kinetics of dendritic cells in induced sputum following allergen challenge in atopic asthmatic subjects.

Asthma is a major public health problem among Puerto Ricans. Little is known, however, about the effect of heredity and environment on the development and severity of asthma in this population. This study will examine the relationship between asthma and certain genetic and environmental factors in Puerto Rican children.

We propose to add a collection of buccal cells to a school-based cohort of 7th graders in Wuhan, a large industrial city in China. The cohort study is being conducted by the Wuhan Public Health and Anti-Epidemic Station (Li Yan MD, director and principal investigator). The cohort study is designed to look at several outcomes. One is initiation of smoking. The second is respiratory health in relation to active and passive smoking and other environmental exposures that are prevalent in Wuhan. The respiratory outcomes include changes in pulmonary function, asthma and other respiratory symptoms. Collection of buccal cells is a noninvasive method of obtaining DNA. The addition of a genetic sample will enable us to examine candidate gene associations for asthma and childhood respiratory illness within an interesting and well-characterized Chinese population. In addition, it provides the capability to examine gene environment interaction with respect to common environmental exposures in Wuhan. The ability to examine gene-environment interaction can help to identify relatively subtle effects of pollutants such as environmental tobacco smoke which is becoming a very common exposure due to the major increase in smoking among Chinese men. Other exposures of interest in Wuhan are indoor coal burning and high ambient exposures to particules, ozone and nitrogen oxides. The proposed study has been approved by the human subjects committee of the Wuhan Public Health and Anti-Epidemic Station....

To examine the role of outdoor pollen grains and fungal spores in the exacerbation of asthma and to produce forecasting models to predict days of high concentration.

This study measures residential exposures (indoor allergens, mold, nitrogen dioxide, nicotine) and relates exposure levels to daily symptoms (wheeze, persistent cough, chest tightness, shortness of breath) and medication use, in a population of children with physician diagnosed asthma, followed for 12 months.