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KMID : 1035620170050040200
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Allergy Asthma & Respiratory Disease
2017 Volume.5 No. 4 p.200 ~ p.204
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Clinical characteristics of total IgE in pediatric allergic disease
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Ahn Ji-Young
Choi Bong-Seok
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Abstract
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Purpose: Serum total and specific IgE levels have been widely used to diagnose allergic disease. However, it has recently been suggested that serum total IgE does not properly reflect specific IgE. Therefore, we evaluated the clinical significance of serum total IgE in pediatric allergic disease.
Methods: This study included 633 patients who visited Kyungpook National University Children’s Hospital between March 2013 and April 2015. We used immunoCAP, an inhalant multiple allergen simultaneous test (MAST), and food MAST to measure specific IgE. We used a skin prick test in some patients and measured serum total IgE, eosinophil count, and serum eosinophil cationic protein in all patients.
Results: There was a positive correlation between serum total IgE and antigen level in the inhalant immunoCAP test. Specifically, the sum of immunoCAP levels was highly correlated with serum total IgE (r=0.631, P<0.001). Moreover, there was a positive correlation between serum total IgE and the sum of food immunoCAP levels (r=0.323, P<0.001). Among the food immunoCAP antigens, milk was highly correlated with serum total IgE (r=0.558, P<0.001). There was a positive correlation between serum total IgE and the sum of class levels of inhalant/food MAST tests (r=0.709, P<0.001 and r=0.686, P<0.001, respectively). There was also a positive correlation between serum total IgE and the number of positive skin prick tests (r=0.445, P<0.001).
Conclusion: Serum total IgE may reflect the sum of serum specific IgE levels in pediatric allergic disease.
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KEYWORD
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Serum total IgE, Serum specific IgE
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