血清脑红蛋白评估新生儿低血糖脑损伤的临床价值

Clinical value of serum neuroglobin in evaluating hypoglycemic brain injury in neonates

摘要:

目的探讨血清脑红蛋白（NGB）在新生儿低血糖脑损伤评估中的临床应用价值。方法选择100例低血糖新生儿为研究对象。根据振幅整合脑电图（aEEG）结果和/或临床表现，分为3组：症状性低血糖脑损伤组（n=22）、无症状性低血糖脑损伤组（n=37）和低血糖无脑损伤组（n=41）。比较各组患儿血糖、低血糖持续时间、NGB及神经元特异性烯醇化酶（NSE）水平、改良aEEG评分；分析NGB与NSE水平、改良aEEG评分之间的相关性并绘制受试者工作特征（ROC）曲线等。结果症状性低血糖脑损伤组血糖、改良aEEG评分低于无症状性低血糖脑损伤组及低血糖无脑损伤组（P < 0.05），NGB、NSE、低血糖持续时间高/长于无症状性低血糖脑损伤组及低血糖无脑损伤组（P < 0.05）。无症状低血糖脑损伤组血糖、改良aEEG评分低于低血糖无脑损伤组（P < 0.05），NGB、NSE及低血糖持续时间高/长于低血糖无脑损伤组（P < 0.05）。NGB与NSE、低血糖持续时间呈正相关（分别r=0.922、0.929，P < 0.05），与血糖、改良aEEG评分呈负相关（分别r=-0.849、-0.968，P < 0.05）；NGB、NSE、改良aEEG评分的ROC曲线下面积分别为0.894、0.890、0.941，NGB最佳截断值为108 mg/L，敏感度80.8%，特异度95.8%。结论血清NGB与NSE、改良aEEG评分比较，同样可作为评估低血糖新生儿脑损伤的特异性指标，具有一定的临床应用价值。

Abstract:

Objective To study the clinical value of serum neuroglobin in evaluating hypoglycemic brain injury in neonates. Methods A total of 100 neonates with hypoglycemia were enrolled as subjects. According to amplitude-integrated EEG (aEEG) findings and/or clinical manifestations, they were divided into symptomatic hypoglycemic brain injury group (n=22), asymptomatic hypoglycemic brain injury group (n=37) and hypoglycemic non-brain injury group (n=41). The three groups were compared in terms of blood glucose, duration of hypoglycemia, levels of neuroglobin and neuron-specific enolase (NSE), and modified aEEG score. The correlation of neuroglobin with NSE and modified aEEG score was analyzed. The receiver operating characteristic (ROC) curve was plotted. Results Compared with the asymptomatic hypoglycemic brain injury and hypoglycemic non-brain injury groups, the symptomatic hypoglycemic brain injury group had significantly lower blood glucose and modified aEEG score, significantly higher neuroglobin and NSE levels, and a significantly longer duration of hypoglycemia (P < 0.05). Compared with the hypoglycemic non-brain injury group, the asymptomatic hypoglycemic brain injury group had significantly lower blood glucose and modified aEEG score, significantly higher neuroglobin and NSE levels, and a significantly longer duration of hypoglycemia (P < 0.05). Neuroglobin was positively correlated with NSE and duration of hypoglycemia (r=0.922 and 0.929 respectively; P < 0.05) and negatively correlated with blood glucose and modified aEEG score (r=-0.849 and -0.968 respectively; P < 0.05). The areas under the ROC curve of neuroglobin, NSE and modified aEEG score were 0.894, 0.890 and 0.941 respectively, and neuroglobin had a sensitivity of 80.8% and a specificity of 95.8% at the optimal cut-off value of 108 mg/L. Conclusions Like NSE and modified aEEG score, serum neuroglobin can also be used as a specific indicator for the assessment of brain injury in neonates with hypoglycemia and has a certain value in clinical practice.