Abstract:
RATIONALE:Kawasaki disease (KD), an acute febrile vasculitis, is the most common cause of acquired heart disease in childhood; however, diagnosing KD can be difficult. OBJECTIVE:To identify unique proteomic biomarkers that can be used to facilitate earlier diagnosis of KD. METHODS AND RESULTS:We enrolled 214 children with fever and clinical features suggestive of KD. Of those, only 100 were diagnosed with KD. Their plasma samples were globally analyzed for cytokines, chemokines, and cell adhesion molecules using an unbiased, large-scale, quantitative protein array. This study was conducted in 3 stages: discovery, replication, and blinded validation. During the discovery phase (n [KD]=37; n [control]=20), the expression of interleukin-17F, sCD40L, E-selectin, CCL23 (myeloid progenitor inhibitory factor 1), and CXCL10 (IFN-γ-inducible protein 10 [IP-10]) were upregulated during the acute phase in patients with KD when compared with that in the controls. A notable increase was observed in the IP-10 levels (KD, 3037 ± 226.7 pg/mL; control, 672 ± 130.4 pg/mL; P=4.1 × 10(-11)). Receiver-operating characteristic analysis of the combined discovery and replication data (n [KD]=77; n [control]=77) showed that the IP-10 level had high area under the curve values (0.94 [95% confidence interval, 0.9055-0.9778]; sensitivity, 100%; and specificity, 77%). With 1318 pg/mL as the optimal cutoff, the blinded validation study confirmed that the IP-10 levels were a good predictor of KD. With intravenous immunoglobulin treatment, the IP-10 levels returned to normal. The downstream receptor of IP-10, CXCR3, was activated in the T cells of patients with acute KD. CONCLUSIONS:IP-10 may be used as a biomarker to facilitate KD diagnosis, and it may provide clues about the pathogenesis of KD.
journal_name
Circ Resjournal_title
Circulation researchauthors
Ko TM,Kuo HC,Chang JS,Chen SP,Liu YM,Chen HW,Tsai FJ,Lee YC,Chen CH,Wu JY,Chen YTdoi
10.1161/CIRCRESAHA.116.305834subject
Has Abstractpub_date
2015-02-27 00:00:00pages
876-83issue
5eissn
0009-7330issn
1524-4571pii
CIRCRESAHA.116.305834journal_volume
116pub_type
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