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Airway Inflammation and Bronchial Hyperresponsiveness in Rhinitic Children With or Without Asthma

Asthma Clinical Trial

Official title:
To Delineate the Characteristics of Airway Inflammation and Bronchial Hyperresponsiveness in Rhinitic Children With or Without Asthma and Sought to Explore a Possible Predictor in the Progression of Allergic Rhinitis to Asthma

Clinical Trial Summary

This is a prospective observational study , to clarity the characteristics of airway inflammation, airway reactivity and airway resistance in rhinitic children with or without asthma and to explore the possible predictors in the progression of allergic rhinitis to asthma.

Clinical Trial Description

Children 6-15 years old with allergic rhinitis and/or asthma diagnosed by specialist physician are enrolled in the department of respiratory and otorhinolaryngology and pediatrics in Guangzhou Institute of Respiratory Disease. According to presence of typical symptoms and signs, patients are divided into allergic rhinitis without asthma (AR group) , allergic rhinitis concomitant asthma (AS+AR group), asthma without rhinitis (AS group). In addition, healthy students in a school are enrolled as normal control group. History of all subjects are collected, the following measurements are performed: skin prick test (SPT), peripheral blood cells five-classification test, serum total immunoglobulin E (IgE) and specific IgE of common inhalant allergens testing, nasal lavage and induced sputum cells classification ，pulmonary function test, bronchial provocation test using methacholine，airway resistance measured by impulse oscillation technique, the levels of eosinophil（ECP），eosinophil peroxidase（EPO）.Meanwhile myeloperoxidase （MPO）and eosinophil-derived neurotoxin (EDN) are measured in induced sputum ,in nasal lavage and in serum. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02360072
Study type Observational
Source Guangzhou Institute of Respiratory Disease
Contact
Status Completed
Phase
Start date September 2014
Completion date September 2015
View Details
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