Changes in plasma odendmcyte-myelin glycoprotein levels for the diagnosis of brain injury in premature infants
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摘要:
目的 通过测定神经元特异性烯醇化酶(neuron specific enolase,NSE)和少突胶质细胞髓鞘糖蛋白(odendmcyte-myelin glycoprotein,Omgp)水平,探讨其在早产儿脑损伤中的诊断价值。 方法 选取2019年1—12月在淮安市妇幼保健院新生儿医学中心住院治疗的80例早产儿,根据颅脑B超及MRI结果,按有无脑损伤分为脑损伤组(40例)及无脑损伤组(40例)。收集研究对象出生后6 h、72 h、7 d的血液标本,采用ELISA法测定NSE、Omgp水平,分析其对早产儿脑损伤的诊断价值。 结果 (1) 脑损伤组生后6 h、72 h、7d NSE、Omgp水平较无脑损伤组显著升高。(2)早产儿脑损伤组生后6 h Omgp水平的ROC曲线下面积最大,为0.952,约登指数为0.813,灵敏度为87.50%,特异度为93.75%,对应的最佳阈值为57.971,阳性预测值97.22%,阴性预测值75.03%,高于NSE。(3)生后6 h、72 h、7 d Omgp水平与矫正胎龄40周NBNA评分负相关,相关系数分别为r=-0.728、-0.732、-0.752,均P<0.01;生后6 h、72 h及7 d NSE与NBNA评分无明显相关性(均P>0.05)。 结论 生后6 h NSE、Omgp水平可以作为BIPI的潜在诊断标志物,其中Omgp水平诊断准确率较高。生后6 h、72 h、7 d Omgp水平可能是预测BIPI预后的良好生物标志物。 -
关键词:
- 早产儿 /
- 脑损伤 /
- 神经元特异性烯醇化酶 /
- 少突胶质细胞髓鞘糖蛋白
Abstract:Objective To investigate the relationship between brain injury and plasma odendmcyte-myelin glycoprotein (Omgp) levels and neuron-specific enolase (NSE) in premature infants, and analyze its clinical significance in premature infants with brain injury. Methods Total 80 cases of premature infants who were hospitalized in the Neonatal Medical Centre of Huai'an Maternal and Child Health Hospital from January 2019 to December 2019 were included in the study. According to the results of craniocerebral imaging, all infants were divided into brain injury group and non-brain injury group. Blood samples were obtained at 6, 72 and 168 h after birth. Levels of NSE and Omgp were detected via ELISA. The predictive value of plasma NSE and Omgp for brain injury in premature infants (BIPI) was analysed. Results (1) The NSE and Omgp levels in the brain injury group were significantly higher than that in the non-brain injury group at 6, 72 and 168 h after birth. (2)The area under ROC curve of OMgp level at 6 h after birth was the largest, which was 0.952, Yoden index was 0.813, sensitivity was 87.50%, specificity was 93.75%. The corresponding optimal threshold was 57.971, positive predictive value was 97.22%, and negative predictive value was 75.03%, which was higher than NSE. (3)The levels of Omgp at 6, 72 and 168 h were significantly negatively correlated with the NBNA score at 40 weeks of corrected gestational age (r=-0.728, -0.732 and -0.752, respectively; all P < 0.01). Levels of NSE had no significant correlation with prognosis at 6, 72 and 168 h after birth (all P>0.05) but could predict the prognosis. Conclusion Levels of NSE and Omgp at 6 h after birth are all correlated with BIPI and can be used as potential diagnostic markers. The diagnostic accuracy of Omgp level is higher. The Omgp levels at 6, 72 and 168 h after birth may be a good biomarker for predicting BIPI prognosis. -
表 1 2组早产儿一般资料比较(x±s)
组别 例数 性别
(男/女,例)胎龄
(周)分娩方式(阴道分娩/
剖宫产,例)出生体重
(g)住院时间
(d)胎膜早破
[例(%)]脑损伤组 40 18/22 34.21±1.57 21/19 2 241.75±480.67 32.75±7.01 19(47.50) 无脑损伤组 40 17/23 34.72±2.03 25/15 2 206.50±594.09 30.13±5.92 20(50.00) 统计量 0.051a 1.269b 0.818a 0.292b 1.810b 0.050a P值 0.822 0.208 0.366 0.771 0.074 0.823 组别 例数 产前感染
[例(%)]妊娠期高血压
[例(%)]羊水污染
[例(%)]1 min Apgar评分
(分)5 min Apgar评分
(分)无创通气
[例(%)]有创通气
[例(%)]脑损伤组 40 27(67.50) 28(70.00) 23(57.50) 7.50±0.91 8.98±0.66 21(52.50) 12(30.00) 无脑损伤组 40 25(62.50) 27(67.50) 20(50.00) 7.68±0.86 9.00±0.60 27(67.50) 19(47.50) 统计量 0.220a 0.058a 0.453a 0.887b 0.177b 1.875a 2.581a P值 0.639 0.809 0.501 0.378 0.860 0.171 0.108 注:a为χ2值,b为t值。 表 2 2组早产儿NSE水平比较(x±s,μg/L)
组别 例数 NSE水平 6 h 72 h 7 d 脑损伤组 40 13.35±2.13 13.08±2.30 11.21±1.90 无脑损伤组 40 9.73±1.91 9.73±1.75 9.12±1.89 t值 8.003 7.331 4.932 P值 <0.001 <0.001 <0.001 表 3 2组早产儿Omgp水平比较(x±s,ng/L)
组别 例数 6 h 72 h 7 d 脑损伤 40 68.03±10.02 74.50±11.32a 73.12±11.54ab 无脑损伤 40 48.70±4.63 49.18±5.42 49.40±4.62 t值 11.076 12.759 12.069 P值 <0.001 <0.001 <0.001 注:与6 h组比较,aP<0.05;与72 h组比较,bP<0.05。 表 4 新生儿血浆中NSE、Omgp对BIPI的预测价值
标志物 AUC
(95% CI)约登
指数截距 敏感性
(%)特异性
(%)阳性预测
值(%)阴性预测
值(%)NSE 0.895(0.784~0.961) 0.663 12.305 72.50 93.75 96.66 57.73 Omgp 0.952(0.859~0.991) 0.813 57.971 87.50 93.75 97.22 75.03 表 5 新生儿脑损伤组NSE、Omgp水平与NBNA的相关性
项目 6 h 72 h 7 d r值 P值 r值 P值 r值 P值 NSE 0.005 0.975 -0.177 0.275 -0.159 0.326 Omgp -0.728 < 0.001 -0.732 < 0.001 -0.752 < 0.001 -
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