Research Article
Published: 17 February, 2021 | Volume 5 - Issue 1 | Pages: 008-013
Airway hyperresponsiveness (AHR) is a hallmark of persistent asthma measured using direct or indirect airway bronchial challenge testing. The purpose of this study is to investigate the putative relationships between type 2 inflammatory biomarkers, airway geometry (FEV1 and FEF25-75) and specific IgE (RAST or skin prick) to AHR. We performed a retrospective analysis of our database (n = 131) of patients with asthma. Of these subjects, 75 had a histamine challenge and 56 had a mannitol challenge. Fractional exhaled nitric oxide (FeNO) and specific immunoglobulin E (IgE) but not blood eosinophils were significantly higher in patients with AHR to either histamine or mannitol. FEV1 % and FEF25 - 75 % were significantly lower in patients with AHR. Elevated Type 2 biomarkers including FeNO and specific IgE but not blood eosinophils were associated with AHR.
Highlights: FeNO and specific IgE but not blood eosinophils are raised in patients with airway hyperresponsiveness.
Read Full Article HTML DOI: 10.29328/journal.aaai.1001023 Cite this Article Read Full Article PDF
Airway hyperresponsiveness; Asthma; Allergy; Type 2 inflammation; FeNO
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