Influence of Diesel Exhaust Particles (DEP) With and Without Organic Compounds on the Allergic Inflammation in Asthmatic Subjects
The primary objective of this study is to elucidate the effects of Diesel particles on the allergic inflammation in the airways of asthmatic patients.
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Basic Science
|Official Title:||Influence of Diesel Exhaust Particles (DEP) With and Without Organic Compounds on the Allergic Inflammation in Asthmatic Subjects|
- difference of the total number of eosinophils resulting in the comparison of allergic versus allergic inflammation in combination with Diesel particles with and without the organic fraction. [ Time Frame: 24 post allergen challenge ] [ Designated as safety issue: No ]
|Study Start Date:||October 2008|
|Study Completion Date:||July 2009|
|Primary Completion Date:||July 2009 (Final data collection date for primary outcome measure)|
A first bronchoscopy will be performed with a baseline bronchoalveolar lavage (BAL) and epithelial brushes followed by a segmental instillation of allergen (grass mix or house dust mite) alone, in combination with Diesel particles, further in combination with Diesel particles without organic compounds and saline as control into four different lung segments. After 24 hours, during a second bronchoscopy, BAL samples will be collected in these challenged segments in order to obtain cells and lavage fluid for cell biological and immunological analysis.
|Hannover, Niedersachsen, Germany, 30625|
|Principal Investigator:||Norber Krug, MD||Fraunhofer ITEM|