血清Lp-PLA2对肺炎相关急性呼吸窘迫综合征诊断分级和预后评估的价值  

Value of serum Lp-PLA2 in the diagnostic grading and prognostic assessment of pneumonia-related acute respiratory distress syndrome

作　　者：杨玉嘉[1] 董宝军[1] 屈金辉 黄津[1] 白雪[1] 杨宏伟[1] YANG Yujia;DONG Baojun;QU Jinhui;HUANG Jin;BAI Xue;YANG Hongwei(Department of Clinical Laboratory,Tianjin Hospital,Tianjin 300211,China)

机构地区：[1]天津市天津医院检验科,天津300211

出　　处：《临床检验杂志》2024年第8期580-585,共6页Chinese Journal of Clinical Laboratory Science

摘　　要：目的探讨脂蛋白相关磷脂酶A2(Lp-PLA2)对肺炎相关急性呼吸窘迫综合征(p-ARDS)诊断分级和预后评估的价值。方法采用前瞻性观察研究设计,将2022年1月至2023年8月天津医院ICU连续收治的57例p-ARDS患者作为研究对象,选择同期普通呼吸病房收治的26例肺炎患者和10例体检健康者作为对照。收集3组人群的血清样本,其中p-ARDS组和肺炎组样本于患者入院24 h内获得,采用Luminex?多重检测试剂盒检测各组血清Lp-PLA2、IL-6和IL-8的表达水平。收集p-ARDS组和肺炎组患者基线资料以及入院血常规、生化指标、C反应蛋白(CRP)、降钙素原(PCT)和D-二聚体(D-dimer)等实验室资料。按照临床诊断、p-ARDS严重程度和28 d临床结局进行分组比较,通过绘制ROC曲线、Spearman相关分析和Logistic回归分析等方法评估Lp-PLA2对p-ARDS的诊断及预后价值。结果p-ARDS组血清Lp-PLA2水平显著高于肺炎组[(233.67±83.49)ng/mL vs(150.86±39.48)ng/mL,P<0.05],而肺炎组显著高于健康人对照组[(150.86±39.48)ng/mL vs(92.07±12.89)ng/mL,P<0.05]。ROC曲线分析结果显示,血清Lp-PLA2对p-ARDS和肺炎的鉴别能力优于IL-6、IL-8、CRP和PCT等指标,其ROC曲线下面积(AUCROC)为0.781(95%CI:0.685~0.878),Lp-PLA2与D-dimer联合的诊断价值更高(AUCROC=0.897,95%CI:0.832~0.963)。亚组分析发现,随着肺损伤加重,血清Lp-PLA2水平递增,Lp-PLA2与p-ARDS患者PaO2/FiO2比值呈负相关(r=-0.549),但与入院SOFA评分呈正相关(r=0.412)。与p-ARDS生存组相比,死亡组血清Lp-PLA2水平更高[(314.5±43.1)ng/mL vs(174.9±48.9)ng/mL,P<0.001];Logistic回归分析显示校正SOFA评分后,Lp-PLA2与28 d死亡风险独立相关(OR=1.099,95%CI:1.026~1.178,P=0.007),校正IL-8或PaO2/FiO2后可得到类似结果。结论血清Lp-PLA2可作为辅助p-ARDS诊断分级和预后评估的生物学标志物。Objective To explore the value of lipoprotein-associated phospholipase A2(Lp-PLA2)in the diagnostic grading and prognostic assessment of pneumonia-associated acute respiratory distress syndrome(p-ARDS).Methods The study was a prospective observational study.Fifty-seven patients with p-ARDS admitted to the ICU ward of Tianjin Hospital from January 2022 to August 2023 were included as the research subjects.Twenty-six pneumonia patients admitted to the general respiratory ward during the same period and 10 healthy individuals undergoing medical examinations were selected as the control group.Their serum samples were collected,and the samples from p-ARDS and pneumonia patients were obtained within 24 hours of admission.The levels of serum Lp-PLA2,interleukin 6(IL-6),and IL-8 were detected using the Luminex~?multiplex test kit.The baseline data and laboratory test results,including routine blood parameters,biochemical markers,C-reactive protein(CRP),procalcitonin(PCT),and D-dimer at admission,were collected from the patients with p-ARDS or pneumonia.The levels of serum Lp-PLA2 were compared by grouping based on clinical diagnosis,severity of ARDS,and clinical outcomes on day 28 after admission.The diagnostic and prognostic value of serum Lp-PLA2 in p-ARDS was evaluated by plotting the receiver operating characteristic(ROC)curve,Spearman correlation analysis,and Logistic regression analysis.Results The levels of serum Lp-PLA2 in the p-ARDS group([233.67±83.49]ng/mL)were significantly higher than that in the pneumonia group([150.86±39.48]ng/mL,P<0.05),while those in the pneumonia group were significantly higher than that in the healthy control group([150.86±39.48]ng/mL vs[92.07±12.89]ng/mL,P<0.05).The analysis results of the ROC curve showed that serum Lp-PLA2 had a better ability to distinguish p-ARDS from pneumonia than indicators such as IL-6,IL-8,CRP,and PCT,with an area under the ROC curve(AUC~(ROC))of 0.781(95%CI:0.685-0.878).The diagnostic value of serum Lp-PLA2 combined with D-dimer was higher,with an AUC~(R

关 键 词：急性呼吸窘迫综合征 肺炎 脂蛋白相关磷脂酶A2 血小板活化因子乙酰水解酶 PLA2G7基因 

分 类 号：R446.1[医药卫生—诊断学] R563.8[医药卫生—临床医学]