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Sensitization rate of Trichophyton spp. allergen in various allergic diseases and identification of its allergens with immunoblotting

Other Title
다양한 알레르기 환자에서 Trichophyton 감작률 및 알레르겐 규명
Authors
최, 정희; 조, 현경; 김, 현아; 김, 선신; 이, 수걸; 이, 영목; 남, 동호; 박, 해심
Citation
Chʿŏnsik mit alrerugi, 22(1):67-75, 2002
Journal Title
Chʿŏnsik mit alrerugi; Journal of asthma, allergy and clinical immunology; Korean journal of asthma, allergy and clinical immunology; 천식 및 알레르기
ISSN
1226-8739
Abstract
Background: Trichophyton is one of the most common genera of dermtophytes. It has been reported that Trichophyton spp. might be one of the causative allergens in patients with asthma, rhinitis, urticaria and angioedema.

Objectives: To analyze the sensitization rate of Trichophyton, to determine serum specific IgE antibody, and to confirm Trichophyton as a causative antigen in patients with allergic diseases.

Methods: A total of 1,806 patients were enrolled in this study. Skin prick test was performed with 50 common inhalant allergens and 20 food allergens. Serum specific IgE antibodies were determined by ELISA using Trichophyton mentagrophytes

antigen in 60 patients among positive skin responders to Trichophyton antigens and in 20 controls. For evaluation of cross-reactivity between Trichophyton and other fungal species, competitive ELISA inhibition test was performed. SDS-PAGE and

IgE-immunoblot analysis using T. mentagrophytes antigen were applied in 7 patients with high specific IgE titers.

Results: 102 patients (5.7%) showed positive response to T. mentagrophytes on skin prick test, and six patients showed isolated positive responses. Serum specific IgE increased according to skin reactivity (p<0.05). SDS-PAGE and

IgE-immunoblot

showed 10 IgE-binding components (11, 17, 27, 32, 35, 38, 42, 48, 49, 51 kDa) within Trichophyton extracts. Trichophyton-ELISA inhibition test showed dose-dependent inhibitions with additions of Trichophyton antigens, while minimal inhibitions

were

noted with additions of Fusarium, Alternaria, Aspergillus and Cladosporium.

Conclusions: Trichophyton could induce IgE sensitization in allergy patients. The sensitization rate on skin prick test was 5.7%. Trichophyton antigen should be included in skin prick test battery to screen causative agents for allergy

patients.
Keywords
Trichophytonsensitization ratespecific IgE antibodyIgE-binding component
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Allergy
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