Chronic Rhinosinusitis (Diagnosis) Clinical Trial
Official title:
Serum Cytokine Profiles of Severe Asthma
The aim of this study is to determine and compare serum cytokine levels of six different severe asthma inflammatory phenotypes differentiated by their atopy, peripheral eosinophilia and/or chronic rhinosinusitis and/or nasal polyposis status.
A prospective observational study of 90 adults diagnosed with severe asthma and on regular follow-up and 15 control subjects will be investigated. Stable (controlled or partly-controlled) status (of all) and exacerbated-status (if any) serum cytokine levels [IL-4, IL-5, IL-10, IL-13, IL-25, IL-33, thymic stromal lymphopoietin (TSLP), IL-17A, periostin) will be evaluated. Also nasopharyngeal brush samples will be obtained for respiratory tract panel work-up with PCR in exacerbated patients. Effect of viral infections' on cytokine response in different inflammatory phenotypes will be evaluated. ;
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