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소아 아토피피부염 환자에서 혈장 내독소 농도가 질환의 중증도에 미치는 영향
김주영 ( Joo Young Kim ),김은경 ( Eun Kyung Kim ),이혜진 ( Hye Jin Lee ),신윤호 ( Youn Ho Shin ),이혜경 ( Hye Kyung Lee ),김진택 ( Jintack Kim ) 대한천식알레르기학회 2014 Allergy Asthma & Respiratory Disease Vol.2 No.1
Purpose: Endotoxin exposure is associated with the development and pathogenesis of allergic diseases. The present study aimed to determine whether plasma endotoxins are elevated in children with atopic dermatitis (AD) and whether the plasma endotoxins are associated with the AD severity. Methods: This study included 42 children with AD and 16 controls. The AD severity was assessed and skin prick tests were performed along with serum total IgE, total eosinophil count, and ImmunoCAP analyses for common allergens. For plasma endotoxin levels, kinetic turbidimetric assay and limulus amebocyte lysate reagent were used. Results: The endotoxin levels were significantly higher in children with AD than in controls (0.039 [interquartile range {IQR}, 0.031 to 0.046] EU/mL vs. 0.031 [IQR, 0.019 to 0.035] EU/mL, P<0.05). The endotoxin levels showed a significantly inverse correlation with the disease severity in the extrinsic AD (r=.0.414, P=0.017) but not in the intrinsic AD (r=0.222, P=0.426). No significant correlation was observed between plasma endotoxin levels, serum total eosinophil count, and serum total IgE. Conclusion: Our results suggest that plasma endotoxin level is increased in the AD subjects than in the normal controls and affects the disease severity only in the extrinsic AD subjects. Further studies with larger sample sizes are warranted to investigate whether plasma endotoxin levels have a different effect on the AD severity depending on the presence of atopy. (Allergy Asthma Respir Dis 2014;2:59-63)