Author/Authors :
Shokouhi Shoormasti, Raheleh Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Fazlollahi, Mohammad Reza Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Kazemnejad, Anoshirvan Department of Biostatistics - Faculty of Medical Sciences - Tarbiat Modares University, Tehran , Tayebi, Behnoosh Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Nadali, Fatemeh Hematology and Blood Banking Department - School of Allied Medical Sciences - Tehran University of Medical Sciences, Tehran , Sharif Shoushtari, Maryam Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Khandan Alamdari, Shamim Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Moslemi, Majid Blood Transfusion Organization Research Center, Tehran , Movahedi, Masoud Department of Immunology and Allergy - Children’s Medical Center - Tehran University of Medical Sciences, Tehran , Mari, Adriano Associated Centers for Molecular Allergology - CAAM, Rome, Italy , Pourpak, Zahra Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran , Moin, Mostafa Immunology - Asthma - and Allergy Research Institute - Tehran University of Medical Sciences, Tehran
Abstract :
Allergic sensitization to inhalant allergens could be considered as a predictor in allergic diseases. The objective of this study was to assess IgE-mediated sensitization to inhalant allergens in allergic and non-allergic adults as well as the evaluation of its association with allergic diseases.
This cross-sectional study was conducted from 2013 to 2016 in 604 allergic and 102 non-allergic adults selected from blood donor volunteers in Tehran, Iran. After taking informed consent, a standard questionnaire was filled to determine asthma, allergic rhinitis and/or conjunctivitis and atopic dermatitis in participants. Specific IgE assay to common inhalant allergens was performed for all subjects. Logistic regression analysis was used to evaluate the impact of IgE sensitization on allergic diseases. A total of 371(61.4%) allergic subjects and 41(40.2%) non-allergic patients were males.
The weeds (especially saltwort) and grasses (particularly meadow fescue and ryegrass) were identified as the most common inhalant allergens. The prevalence of IgE sensitization to trees, weeds, and grasses was higher in subjects with allergic rhino-conjunctivitis and trees sensitization was a significant factor in them [OR=2.32, 95% CI (1.58-3.41)]. IgE sensitization to any inhalant allergens could be a predictor for allergic rhinitis, conjunctivitis and rhino-conjunctivitis in adults [OR=2.20, 95% CI (1.54-3.15], [OR=1.81, 95% CI (1.28-2.54)] and [OR=2.55, 95% CI (1.72-3.78)], respectively. With an increase in the sum of specific IgE concentrations, the prevalence of allergic conjunctivitis and rhino-conjunctivitis also increased. Our results showed the association between positive specific IgE and its concentration with some allergic diseases which could help physicians to prevent such diseases by recognizing and treating them, particularly in individuals with a positive family history of allergic diseases.
Keywords :
Allergen , Allergic diseases , IgE , Inhalant , Sensitization