摘要
目的 探究重症肺炎脓毒症患者血清Sestrin2,Toll样受体7(toll-like receptors 7,TLR7)水平表达及对并发心力衰竭的预测价值.方法 以2022年2月～2023年5月在山西省人民医院进行诊治的86例重症肺炎脓毒症并发心力衰竭患者(并发心力衰竭组)、86例重症肺炎脓毒症患者(未并发心力衰竭组)为研究对象,另收集同期行健康检查者86例纳为对照组.酶联免疫吸附法(ELISA)测定血清Sestrin2和TLR7水平.彩色多普勒超声心动图仪测定所有受试者心功能相关指标:左室射血分数(left ventricular ejection fraction,LVEF)、左室舒张末期内径(left ventricular end diastolic diameter,LVEDD)及左室收缩末期内径(left ventricular end-systolic diameter,LESD),分析三组血清Sestrin2,TLR7水平表达及心功能.Pearson相关性分析并发心力衰竭患者血清Sestrin2,TLR7水平与心功能相关指标间的关系;受试者工作特征(receiver operating characteristic,ROC)曲线分析血清Sestrin2和TLR7水平对重症肺炎脓毒症患者并发心力衰竭的预测价值.结果 未并发心力衰竭组与并发心力衰竭组血清Sestrin2(11.59±3.31 ng/ml,16.13±3.62 ng/ml),TLR7(48.93±9.52 ng/ml,61.74±10.11 ng/ml)及心功能相关指标 LVEDD(53.28±5.76mm,62.54±6.11mm),LESD(38.16±4.38mm,48.15±5.02mm)均显著高于对照组(7.11±2.34ng/ml,40.12±10.16ng/ml,44.86±5.02mm,29.02±4.07mm),差异具有统计学意义(qsestrin2=13.241,26.659,qTLR7=8.224,20.182,qLVEDD=13.824,29.028,qLESD=18.805,39.359,均P＜0.05),且并发心力衰竭组患者显著高于未并发心力衰竭组,差异具有统计学意义(q=13.418,11.985,15.203,20.554,均P＜0.05);而未并发心力衰竭组和并发心力衰竭组心功能指标LVEF(55.43％±6.62％,41.67％±5.84％)显著低于对照组(62.75％±7.16％),差异具有统计学意义(q=10.344,29.789,均P＜0.05),且并发心力衰竭组患者显著低于未并发心力衰竭组,差异具有统计学意义(q=19.455,P＜0.05).Pearson相关性分析结果显示,并发心力衰竭组患者血清Sestrin2,TLR7水平与LVEF呈显著负相关(r=-0.419,-0.467,均 P＜0.05),与 LVEDD 和 LESD 呈显著正相关(r=0.456,0.419;0.402,0.437,均 P＜0.05),Sestrin2与TLR7呈显著正相关(r=0.641,P＜0.05).ROC曲线结果显示,血清Sestrin2,TLR7联合预测重症肺炎脓毒症患者并发心力衰竭的曲线下面积(area under the curve,AUC)为0.940,敏感度和特异度分别为74.9％,73.3％.结论 重症肺炎脓毒症患者血清Sestrin2,TLR7水平均显著升高,且对患者并发心力衰竭具有良好的预测价值.
Abstract
Objective To investigate the expression of serum Sestrin2 and Toll-like receptor 7(TLR7)in patients with severe pneumonia and sepsis and their predictive value for heart failure.Methods A total of 86 patients with severe pneumonia and sepsis complicated with heart failure(complicated with heart failure group)and 86 patients with severe pneumonia and sepsis(uncomplicated with heart failure group)who were diagnosed and treated in Shanxi Provincial People's Hospital from February 2022 to May 2023 were studied.Another 86 patients who underwent health examinations were included as the control group.Enzyme linked immunosorbent assay(ELISA)method was applied to measure serum levels of Sestrin2 and TLR7.Color doppler echocardiography was applied to measure cardiac function related indicators:left ventricular ejection fraction(LVEF),left ventricular end diastolic diameter(LVEDD),and left ventricular end systolic diameter(LESD).The expression of Sestrin2 and TLR7 levels and cardiac function in three groups was analyzed.Pearson correlation was applied to analyze the relationship between serum levels of Sestrin2 and TLR7 and cardiac function related indicators in patients with heart failure.Receiver operating characteristic(ROC)curve was applied to analyze the predictive value of serum levels of Sestrin2 and TLR7 in patients with severe pneumonia and sepsis complicated with heart failure.Results The serum levels of Sestrin2(11.59±3.31 ng/ml,16.13±3.62 ng/ml),TLR7(48.93±9.52 ng/ml,61.74±10.11 ng/ml),and cardiac function related indicators[LVEDD(53.28±5.76 mm,62.54±6.11 mm)and LESD(38.16±4.38 mm,48.15±5.02 mm)]were higher in uncomplicated heart failure group and complicated heart failure group than those in control group(7.11±2.34 ng/ml,40.12±10.16 ng/ml,44.86±5.02 mm,29.02±4.07 mm),with significant differences(qSestrin2=13.241,26.659,qTLR7=8.224,20.182,qLVEDD=13.824,29.028,qLESD=18.805,39.359,all P＜0.05),and those values in complicated with heart failure group were higher than those in uncomplicated with heart failure group,with significant differences(q=13.418,11.985,15.203,20.554,all P＜0.05).The LVEF(55.43％±6.62％,41.67％±5.84％)index in uncomplicated heart failure group and complicated heart failure group was lower than that in control group(62.75％±7.16％),with significant differences(q=10.344,29.789,all P＜0.05),and the index in complicated with heart failure group was lower than that in uncomplicated with heart failure group,with significant difference(q=19.455,P＜0.05).Pearson correlation analysis showed that serum levels of Sestrin2 and TLR7 in patients with heart failure were negatively correlated with LVEF(r=-0.419,-0.467,all P＜0.05),and positively correlated with LVEDD and LESD(r=0.456,0.419;0.402,0.437,all P＜0.05).Sestrin2 was positively correlated with TLR7(r=0.641,P＜0.05).ROC curve results showed that the area under the curve(AUC)of serum Sestrin2 combined TLR7 for predicting heart failure in severe pneumonia sepsis patients was 0.940,with sensitivity of 74.9％and specificity of 73.3％.Conclusion The serum levels of Sestrin2 and TLR7 in patients with severe pneumonia and sepsis were elevated and may have good predictive value for patients with heart failure.
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