Changes of serum cytokines in children with viral myocarditis induced by coxsackie virus type B and its clinical significance / 中国医师进修杂志

ABSTRACT

ObjectiveTo explore the changes of serum macrophage migration inhibitory factor (MIF),interleukin-6(IL-6),tumor necrosis factor-alpha(TNF- α ) levels,and the relationship with creatine kinase-MB (CK-MB) in children with viral myocarditis induced by coxsackie virus type B,and its clinical significance.MethodsSerum MIF,IL-6 and TNF- α levels were detected by enzyme-linked immunosorbent assay (ELISA) in 58 cases with viral myocarditis induced by coxsackie virus type B in acute phase (viral myocarditis group) and 40 cases hospitalized children (control group).CK-MB was measured by Hitachi 7180 fully automated clinical chemistry analyzer.ResultsSerum MIF,IL-6 and TNF-o levels of viral myocarditis group [ (59.15 ± 25.35 ),(68.52 ± 12.78 ),(85.31 ± 34.18) ng/L] were significantly higher than those of control group [ ( 36.78 ± 12.06 ),( 28.75 ± 16.03 ),( 52.91 ± 14.39 ) ng/L ] (P ＜ 0.01 ),and CK-MB of viral myocarditis group [(46.74 ± 23.89) U/L] was also significantly higher than that of control group [ ( 19.23 ± 11.56 ) U/L ] (P ＜ 0.01 ).There was positive correlation in children with viral myocarditis between MIF,IL-6,TNF- α and CK-MB (r =0.74,0.63,0.69,P ＜ 0.05).ConclusionsIt suggests that immune dysfunction exist in children with viral myocarditis induced by coxsackie virus type B.MIF,IL-6 and TNF- αmight take part in development of myocarditis,and the detection of them can evaluate severity of myocarditis.