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논문 기본 정보

자료유형
학술저널
저자정보
Sánchez Jorge (Group of Clinical and Experimental Allergy IPS Universitaria Clinic University of Antioquia Medellí) Sánchez Andres (Group of Clinical and Experimental Allergy IPS Universitaria Clinic University of Antioquia Medellí) Marlon Munera Biol (Medical Research Group (GINUMED) Rafael Núñez University Corporation) Garcia Elizabeth (Allergy Department Faculty of Medicine Universidad de los Andes Bogotá Colombia.Department Allergol) Lopez Juan-Felipe (Group of Clinical and Experimental Allergy IPS Universitaria Clinic University of Antioquia Medellí) Velásquez-Lopera Margarita (Dermatological Research Center Centro de Investigaciones Dermatológicas (CIDERM) University of Anti) Cardona Ricardo (Group of Clinical and Experimental Allergy IPS Universitaria Clinic University of Antioquia Medellí)
저널정보
대한천식알레르기학회(구 대한알레르기학회) Allergy, Asthma & Immunology Research Allergy, Asthma & Immunology Research Vol.13 No.5
발행연도
2021.9
수록면
746 - 761 (16page)
DOI
10.4168/aair.2021.13.5.746

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Purpose: Eosinophils are frequently found in atopic dermatitis (AD) and chronic spontaneous urticaria (CSU) that release eosinophil peroxidase (EPX) and eosinophil cationic protein (ECP). Continuous exposure to these proteins could trigger an autoimmune response which may contribute to the pathogenesis and severity of skin inflammation. In this study, we investigate the immunoglobulin E (IgE) response against eosinophil proteins in CSU and AD. Methods: We recruited patients with severe AD, severe CSU and healthy subjects to explore the presence of IgE autoantibodies and cross-reactivity against EPX, ECP and thyroid peroxidase (TPO). The potential cross-reactive epitopes among the peroxidase family were determined using in silico tools. Results: The frequencies of anti-EPX IgE (28.8%) and anti-ECP IgE (26.6%) were higher in the AD group, and anti-TPO IgE was higher in the CSU group (27.2%). In the CSU group, there was a correlation between the anti-EPX IgE and anti-TPO IgE levels (r = 0.542, P < 0.001); TPO inhibited 42% of IgE binding to EPX, while EPX inhibited 59% of IgE binding to TPO, suggesting a cross-reactivity with EPX as a primary sensitizer. There was greater inhibition when we used a pool of sera CSU and AD, TPO inhibited 52% of IgE binding to EPX, while EPX inhibited 78% of IgE binding to TPO. In silico analysis showed a possible shared epitope in the peroxidase protein family. Conclusions: IgE against eosinophil proteins may contribute to chronic inflammation in patients with AD and CSU. Cross-reactivity between EPX and TPO could explain thyroid problems in CSU patients.

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