Page 52 - 南京医科大学学报自然科学版
P. 52

南京医科大学学报(自然科学版)                                 第41卷第11期
               ·1614 ·                    Journal of Nanjing Medical University(Natural Sciences)  2021年11月


             ·临床研究·

              急性呼吸窘迫综合征新生儿血浆miR⁃6833⁃3p的表达水平及诊

              断效能



              吴   越 ,邱 峰     2*
                     1
               南京医科大学附属儿童医院新生儿医疗中心,江苏                   南京    210008;南京医科大学附属脑科医院脑血管病救治中心,江苏
              1                                                     2
              南京 210029



             [摘    要] 目的:筛选并验证分析与新生儿急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)相关的微小核糖核
              酸(miRNA),初步研究患儿血浆中miR⁃6833⁃3p的表达水平及其诊断效能。方法:选取南京医科大学附属儿童医院25例ARDS
              患儿(ARDS组)为研究对象,同期选取32例普通新生儿为对照组。采用微流体芯片技术筛选与新生儿ARDS相关的miRNA,
              对于组间差异表达超过5倍的miRNA 进一步进行实时荧光定量聚合酶链式反应(RT⁃PCR)验证芯片重复性及进行靶基因预
              测,对两组血浆miR⁃6833⁃3p的表达水平进行检测并与急性生理评分做相关性分析,通过绘制受试者工作特征(receiver operat⁃
              ing characteristic,ROC)曲线分析 miR⁃6833⁃3p在患者中的诊断效能并计算诊断敏感度及特异度。结果:通过基因芯片筛选出
              24 个与新生儿 ARDS 相关的高表达差异基因。表达差异超过 5 倍的 miRNA 有 8 个,4 个上调的分别是 miR⁃31⁃5p、miR⁃4754、
              miR⁃6833⁃3p 和 miR⁃192⁃3p,4 个表达下调的基因分别是 miR⁃362⁃3p、miR⁃11a、miR⁃7a⁃2⁃3p 和 miR⁃1382。通过验证发现
              miR⁃6833⁃3p 在 ARDS 组血浆中显著上调(P<0.01),且与 APACHE Ⅱ评分中的急性生理评分呈正相关(r=0.731,P < 0.001)。
              通过靶基因预测分析发现miR⁃6833⁃3p与PI3⁃K/Akt、MAPK信号通路可能密切相关。相关ROC曲线结果也显示,miR⁃6833⁃3p
              预测新生儿ARDS的ROC曲线下面积为 0.848,其诊断最佳阈值为 1.03,约登指数最大值为 0.59,此时 miR⁃6833⁃3p的诊断灵
              敏度为 84.55%,特异度为75.36% 。结论:miR⁃6833⁃3p在新生儿ARDS血浆中的表达水平显著升高,可作为新生儿ARDS的特
              异性标志物。
             [关键词] 急性呼吸窘迫综合征;miR⁃6833⁃3p;诊断效能;新生儿
             [中图分类号] R722.1                   [文献标志码] A                       [文章编号] 1007⁃4368(2021)11⁃1614⁃06
              doi:10.7655/NYDXBNS20211108


              Study of the expression and diagnostic effect of miR⁃6833⁃3p in neonatal acute respiratory

              distress syndrome
                     1
              WU Yue ,QIU Feng 2*
              1 Neonatal Medical Centre,Children’s Hospital of Nanjing Medical University,Nanjing 210008;Cerebrovascular
                                                                                                 2
              Disease Center,Nanjing Brain Hospital Affiliated to Nanjing Medical University,Nanjing 210029,China


             [Abstract] Objective:This study aims to screen and verify microRNA in neonatal acute respiratory distress syndrome(ARDS),
              preliminary study on miR⁃6833⁃3p level and its diagnostic effect in serum of ARDS neonate. Methods:Twenty⁃five infants with ARDS
              and 32 controls were investigated in this study. The miRNA microarray was utilized to explore the expression of miRNA in serum. Real⁃
              time PCR was used to verify the reproducibility of diagnostic chips and the miRNA target prediction on miRNAs that were over five
              folds differences between groups. Furthermore,correlation was conducted between levels of miR⁃6833⁃3p and APACHE Ⅱ scores. The
              diagnostic effect,sensitivity,and specificity were analyzed according to receiver operating characteristic(ROC)curve. Results:Twenty
              ⁃four aberrant miRNAs were screened out as highly expressed,and among these miRNAs there were 8 miRNAs with over five folds
              differences of expression:miR⁃31⁃5p,miR⁃4754,miR⁃6833⁃3p and miR⁃192⁃3p were up⁃regulation;miR⁃362⁃3p,miR⁃11a,miR⁃7a⁃2⁃
              3p and miR⁃1382 were down⁃regulation. Through verification,it was found that the expression of miR⁃6833⁃3p in the plasma of the

             [基金项目] 南京市医学科技发展资金(QRX17086)
              ∗
              通信作者(Corresponding author),E⁃mail:qiufeng11@sina.com
   47   48   49   50   51   52   53   54   55   56   57