川崎病患儿血清脑利钠肽的水平改变及其与肌钙蛋白Ⅰ的对比分析

目的 通过观察川崎病(KD)患儿脑利钠肽(BNP)的水平变化,并与肌钙蛋白Ⅰ(cTrⅠ)比较,探讨其在KD早期诊断中的作用.方法 选择住院KD患儿21例作为研究对象,20例健康体检儿童作为对照组.对KD组及对照组采用酶联免疫吸附法测定血浆BNP、cTnⅠ浓度,并行心脏多普勒超声检查测定冠状动脉内径.结果 KD患儿血浆BNP水平[(517.26±213.40)μg/L]明显高于对照组[(37.55±7.56)μg/L],差异有非常显著性(P＜0.01);cTnⅠ浓度[(0.31±0.17)μg/L]也高于对照组[(0.13±0.04)μg/L],差异有显著性(P＜0.01).KD患儿BNP异常率(100%)明显高于cTnⅠ(47.7%),差异有非常显著性(P＜0.01);冠状动脉病变组血浆BNP、cTnⅠ水平明显高于非冠状动脉病变组;典型KD患儿及不完全型KD患儿BNP及cTnⅠ血浆水平间差异无显著性(P＞0.05).结论 KD患儿血浆BNP、cTnⅠ浓度均明显升高,而BNP具有更高的特异性及灵敏度.血浆BNP水平测定有助于KD的诊断,尤其是不完全型KD早期诊断.

Serum levels of brain natriuretic peptide and cardiac troponin I in children with Kawasaki disease

Objective To determine the serum levels of brain natriuretie peptide(BNP)and cardiac troponin I(cTnⅠ)in children with Kawasaki disease(KD),and to assess their value in the early diagnosis of KD.Methods Serum levels of BNP and cTnI were measured in 21 KD children(KD group)and 20 healthy children as control group by enzyme-linked immunoabsorbent assay.The internal diameter of coronary artery was measured by two-dimensional eehocardiography.Results Mean serum level of BNP[(517.26±213.40)μg/L]was significantly higher than that in the control group[(37.55±7.56)μg/L](P ＜ 0.01),and cTnI level[(0.31±0.17)μg/L]was significantly higher than that of the control group[(0.13±0.04)μg/L](P ＜0.01).Among KD patients,the percentage of patients with increased BNP(100%)was significantly higher than that of increased cTnⅠ(47.7%),there was significant difference(P ＜ 0.01).Serum levels of BNP and cTnⅠ in the coronary artery lesion(CAL)group were significantly higher than those in the group without coronary artery lesion(NCAL)[(719.33±221.17)μg/L vs(416.23±120.45)μg/L,(0.44±0.22)μg/L vs(0.24±0.11)μg/L,t = 3.03,2.52,P ＜ 0.05].There were no significant difference in serum BNP and cTnⅠ concentrations between the typical and incomplete KD group[(536.15±243.80)μg/L vs(515.71±208.16)μg/L,(0.33±0.21)μg/L vs(0.31±0.16)μg/L,t = 1.06,1.21,P＞0.05].Conclusion Serum levels of BNP and cTnⅠ increase significantly in the KD patients,and BNP has higher sensitivity and specificity than cTnⅠ.Serum BNP level is useful for diagnosis of KD,especially for the incomplete KD.