title: Exhaled nitric oxide levels are not correlated with eczema severity in Chinese children with atopic dermatitis.
abstract: Asthma is a common atopic disease associated with atopic dermatitis (AD) and allergic rhinitis (AR). Exhaled nitric oxide level (eNO) has been found to be an interesting noninvasive marker of disease severity in children with asthma. However, it is uncertain if eNO may be confounded by any coexisting AD or AR. In this study, eNO in Chinese children with moderate-to-severe AD and no asthma symptoms (n = 53) was measured online by a chemiluminescence analyzer. Severity of AD was assessed using the objective SCORing-Atopic-Dermatitis score and coexisting allergic rhinitis with the Allergic-Rhinitis-Score (ARS). Patients with active symptoms of asthma or inhaled/intranasal corticosteroids were excluded. There was no difference in eNO between genders and no correlation between eNO and AD severity regardless of ARS or bronchial reactivity status. ENO appears to be a noninvasive marker whose level is independent of the two atopic diseases of AD and AR in children old enough to perform exhalation maneuver.
authors.affiliation: Department of Paediatrics, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, Shatin, SAR, China. ehon@cuhk.edu.hk
authors.forename: K L E
authors.initials: KL
authors.lastname: Hon
authors.forename: T F
authors.initials: TF
authors.lastname: Leung
authors.forename: W Y C
authors.initials: WY
authors.lastname: Kam
authors.forename: M C A
authors.initials: MC
authors.lastname: Lam
authors.forename: K Y
authors.initials: KY
authors.lastname: Wong
authors.forename: E
authors.initials: E
authors.lastname: Yung
authors.forename: T F
authors.initials: TF
authors.lastname: Fok
mesh_terms: D000293:Adolescent; D015415:Biomarkers; D001944:Breath Tests; D002648:Child; D003876:Dermatitis, Atopic / Q000378:metabolism*; D004485:Eczema / Q000378:metabolism*; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D007073:Immunoglobulin E / Q000097:blood; D008297:Male; D009569:Nitric Oxide / Q000378:metabolism*; D006255:Rhinitis, Allergic, Seasonal / Q000378:metabolism
chemical_list: D015415:Biomarkers; D009569:Nitric Oxide; D007073:Immunoglobulin E