Seasonal Allergic Rhinitis Clinical Trial
Official title:
Evaluation of Nasal Inflammatory Biomarkers During the Early and Late Phase Response to Nasal Volus Allergen Challenge in in Subjects With Seasonal Allergic Rhinitis (Out-of-season)
This research aims to establish a panel of inflammatory biomarkers of the early (Histamine, Tryptase, ProstaglandineD2) and late (Interleukin-4, Interleukin-5, Interleukin-6, Interleukin-13, Eotaxin, Tumor necrosis factor-a (TNF), (Macrophage Inflammatory Protein-1beta (MIP1ß)) phase response to nasal bolus allergen challenge (NAC) in subjects with out-of-season seasonal allergic rhinitis, suitable for future application in drug intervention studies of novel anti-allergy therapeutics.
Biomarkers will be sampled by nasal filter paper (NFP) adsorption and lavage (NLF) prior to and following NAC. Samples from initial subjects (Cohort A; n~6) will be used primarily for validation of biomarker assays in nasal filter paper eluates. Validated biomarker assays will be applied to analyze biomarker changes in a further cohort of subjects (Cohort B; n~12) with the aim of fully defining the optimum panel and sampling time points for future studies. ;
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