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제 1형 당뇨병으로 진단된 소아 및 청소년 환자의 사이토카인 농도 분석

Analysis of Cytokines in Sera from Type 1 Diabetic Patients at Diagnosis

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키워드

주제분류소아과학

초록

목 적:1형 당뇨병은 T세포 매개의 면역질환으로서 다양한 사이토카인이 여러 기전으로 병리기전에 관여하고 있다. 저자는 지금까지 1형 당뇨병에 발병 및 진행에 관여하는 것으로 알려진 여러 가지 사이토카인을 분석을 통해 인체 내에서 1형 당뇨병의 병리기전을 알아보고자 하였다. 방 법:2004년 1월부터 2009년 7월까지 서울대학교병원 소아청소년과에서 새롭게 진단된 25명의 환자와 동 기간 타 병원에서 진단 후 1개월 이내에 전원 된 13명의 환자의 혈청을 진단 시 또는 진단 후 1개월 이내에 채혈된 혈액에서 분석하여 39명의 건강한 대조군과 비교하였다. 결 과:새롭게 진단된 제 1형 당뇨병 환자는 대조군과 비교하여 혈청에서의 친염증성 사이토카인인 IL-1β (P˂0.01), TNF-α (P=0.019)의 농도가 유의하게 높았으며 IL-10 (P˂0.01) 농도 또한 유의하게 높았다. 인슐린 자가항체 양성인 환자는 21명(60%)이며 인슐린 자가항체의 농도는 IL-10 (r= 0.454, P=0.006), TNF- α (r=0.368, P=0.030)와 유의한 양의 상관관계를 보였다. 결 론:제 1형 당뇨병의 발병 시 친염증성 사이토카인인 IL-1β, TNF-α과 2형 사이토카인 IL-10이 병리기전에 중요한 역할을 하는 것으로 생각된다.

Abstract

Purpose:Diverse cytokines influence the pathogenesis of type 1 diabetes mellitus (T1DM) in different ways. We studied the profile of cytokines in sera from type 1 diabetic patients at diagnosis. Methods:Serum levels of 11 cytokines (IL-1α, IL-1β, IL-1Ra, IL-2, IL-4, IL-6, IL-10, IL-12(p70), INF-γ, and TNF-α) from 38 newly-diagnosed T1DM patents and 39 healthy controls were measured, using multiplex immunoanalytic xMAP. Results:Patients showed significantly higher levels of IL-1β (P˂0.01), IL-10 (P˂0.01), and TNF-α (P=0.019), than the healthy controls. In 12 of 35 patients, the insulin autoantibody (IAA) was positive (34%) and the level of IAA was correlated with IL-10 (r=0.454, P=0.006), and TNF-α (r=0.368, P=0.030). Conclusion:These results suggest that IL-1β, TNF-α, and IL-10 play a role in the pathogenesis of T1DM, and the level of the IAA is correlated with IL-10 and TNF-α. (J Korean Soc Pediatr Endocrinol 2011;16:13-19)

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