alexa Profiles of IgE Sensitization to Der f 1, Der f 2, Der f 6, Der f 8, Der f 10, and Der f 20 in Korean House Dust Mite Allergy Patients.
Immunology

Immunology

Immunome Research

Author(s): Jeong KY, Lee JY, Son M, Yi MH, Yong TS, , Jeong KY, Lee JY, Son M, Yi MH, Yong TS,

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Abstract PURPOSE: Measurement of IgE specific to purified house dust mite (HDM) allergens may improve allergy diagnosis. This study aimed to investigate the sensitization profiles of Korean HDM allergic subjects suffering from respiratory allergy and atopic dermatitis (AD) to Der f 1, Der f 2, Der f 6, Der f 8, Der f 10, and Der f 20. METHODS: Recombinant HDM allergens were produced in Pichia pastoris (Der f 1) or Escherichia coli (5 allergens). IgE reactivity to the individual recombinant allergens and total extract of mite was assessed by ELISA. RESULTS: Der f 1 was recognized by 79.1\%, Der f 2 by 79.1\%, Der f 6 by 9.3\%, Der f 8 by 6.2\%, Der f 10 by 6.2\%, and Der f 20 by 6.6\% of the patients' sera tested, while the prevalence of IgE reactivity to total mite extract was 94.7\%. Combination of Der f 1 and Der f 2 had a sensitivity of 87.6\%. Specific IgE to Der f 2 alone was detected from 89.4\% of HDM-sensitized respiratory allergy subjects and 92.3\% to the combination of the 2 major allergens Der f 1 and Der f 2. However, sera from fewer patients with AD, namely 72.4\% and 71.0\%, recognized Der f 1 and Der f 2, respectively. The combination of 2 major allergens allowed diagnosis of 84.5\% of the AD patients. No correlation between sensitization to specific allergens and HDM allergy entity was found. CONCLUSIONS: Der f 2 was the most frequently sensitized allergen among the HDM-sensitized respiratory and AD patients in Korea, and the combination of the group 1 and 2 major allergens increased the diagnostic sensitivity. Minor allergens did not significantly improve diagnostic sensitivity. However, further studies are needed to analyze the relationship between sensitization to other HDM allergens and the disease entity of the HDM allergy.
This article was published in Allergy Asthma Immunol Res and referenced in Immunome Research

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