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血清miR-21-3p对脓毒症患儿并发急性肾损伤的预测价值
Value of serum miR-21-3p in predicting acute kidney injury in children with sepsis
目的 探讨血清miR-21-3p及其联合血肌酐（Scr）、胱抑素C（Cys-C）及肾损伤分子-1（KIM-1）对脓毒症患儿并发急性肾损伤（AKI）的预测价值。方法 2016年1月至2019年3月诊断为脓毒症的患儿142例，根据是否并发AKI分为AKI组（n=49）和非AKI组（n=93）。检测两组血清miR-21-3p、Scr、Cys-C及KIM-1水平，绘制受试者工作特征（ROC）曲线分析血清miR-21-3p、Scr、Cys-C及KIM-1水平预测AKI的价值，Pearson相关分析血清miR-21-3p表达水平与Scr、Cys-C及KIM-1表达水平的相关性。结果 AKI组血清miR-21-3p、Scr、Cys-C及KIM-1水平明显高于非AKI组（P < 0.05）。ROC曲线分析结果显示血清miR-21-3p、Scr、Cys-C及KIM-1水平四项联合预测脓毒症患儿并发AKI的曲线下面积（0.962，95% CI：0.906~0.998）均分别大于上述各单项指标预测的曲线下面积（P < 0.05），且敏感度（97.0%）和特异度（91.4%）最高。相关分析显示，AKI组血清miR-21-3p表达水平与Scr、Cys-C及KIM-1表达水平均呈正相关（r=0.704、0.812、0.863，P < 0.01）。结论 血清miR-21-3p表达水平在脓毒症并发AKI患儿中明显升高，联合Scr、Cys-C及KIM-1指标对预测脓毒症并发AKI具有较高的价值。
Objective To study the value of serum miR-21-3p combined with serum creatinine (Scr), cystatin C (Cys-C), and kidney injury molecule-1 (KIM-1) in predicting acute kidney injury (AKI) in children with sepsis. Methods A total of 142 children who were diagnosed with sepsis from January 2016 to March 2019 were enrolled. According to the presence or absence of AKI, they were divided into AKI group with 49 children and non-AKI group with 93 children. The serum levels of miR-21-3p, Scr, Cys-C, and KIM-1 were measured for the two groups. The receiver operating characteristic (ROC) curve was plotted to analyze the value of serum miR-21-3p, Scr, Cys-C, and KIM-1 in predicting AKI. A Pearson correlation analysis was used to evaluate the correlation of serum miR-21-3p with Scr, Cys-C, and KIM-1. Results The AKI group had significantly higher serum levels of miR-21-3p, Scr, Cys-C, and KIM-1 than the nonAKI group (P < 0.05). The ROC curve analysis showed that the combination of serum miR-21-3p, Scr, Cys-C, and KIM-1 had an area under the ROC curve (AUC) of 0.962 (95%CI:0.906-0.998), which was significantly larger than the AUC of each index alone (P < 0.05), with a sensitivity of 97.0% and a specificity of 91.4%. The correlation analysis showed that the serum level of miR-21-3p was positively correlated with Scr, Cys-C, and KIM-1 in the AKI group (r=0.704, 0.812, and 0.863 respectively, P < 0.01). Conclusions There is a significant increase in the serum level of miR-21-3p in children with sepsis and AKI, and its combination with Scr, Cys-C, and KIM-1 has a high value in predicting AKI.
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海南省医学科研基金（17A300618）。
