白细胞介素-39联合降钙素原评估脓毒症严重程度的临床价值

摘要 目的：探讨白细胞介素-39（Interleukin-39, IL-39）联合降钙素原 （Procalcitonin, PCT）对脓毒症严重程度的评估价值。方法：随机选取2019年12月至2020年12月上海交通大学医学院附属新华医院及瑞金医院因感染入院患者100例,分为非脓毒症组、脓毒症组和脓毒症休克组,根据28天内脓毒症患者是否死亡,分为死亡组和存活组,另纳入40例健康人为对照组。测量患者入院24小时内的IL-39及PCT水平,绘制受试者工作特征曲线（Receiver operating characteristic curve, ROC）分析IL-39、PCT 及二者联合对脓毒症患者病情严重程度的评估价值。结果：所有感染组IL-39、PCT水平均高于健康对照组,且随着病情严重程度的增加而升高,从低到高的顺序为健康对照组<非脓毒症组<脓毒症组<脓毒症休克组,死亡组患者IL-39、PCT水平高于存活组;ROC曲线分析IL-39和PCT以及二者联合对预测脓毒症休克的曲线下面积（Area under curve, AUC）为0.776,0.794,0.866,灵敏度为81.0 %,61.9 %,90.5 %,特异度为74.4 %,84.6 %,66.7 %,约登（Youden）指数分别为0.5531,0.4652,0.5714,截断值分别为115.05 pg/mL,33.18 ng/mL;ROC曲线分析IL-39和PCT以及二者联合预测患者死亡的价值,AUC为0.798,0.774,0.868,灵敏度为90.9 %,54.6 %,90.9 %,特异度为65.3 %,87.8 %,79.6 %,Youden指数分别为0.5622,0.4230,0.7050,截断值分别为115.05 pg/mL,46.59 ng/mL。结论：IL-39联合PCT评估脓毒症严重程度的临床价值,优于PCT单项预测,检测IL-39水平有助于脓毒症病情的早期评判。     

PCT、IL-6及CRP对新生儿宫内细菌感染的诊断价值

目的:探讨新生儿宫内细菌感染采用降钙素原(PCT)、白细胞介素-6(IL-6)、及C反应蛋白(CRP)诊断的临床价值。方法:根据感染结局将2013年3月~2014年9月在我院分娩且有宫内感染高危因素的179例新生儿分为感染组(34例)和无感染组(145例),检测两组的PCT、IL-6及CRP水平,并比较各项指标对宫内细菌感染的诊断价值。结果:感染组脐带血PCT、IL-6、CRP水平均高于无感染组,差异有统计学意义(P0.05)。感染组各单个指标阳性率、两指标联合的阳性率高于无感染组,差异均有统计学意义(P0.05),感染组中PCT、IL-6阳性率高于CRP,PCT+IL-6的阳性率高于PCT+CRP、IL-6+CRP,差异均有统计学意义(P0.05)。PCT+IL-6的灵敏度、准确率高于单个指标及其他两个指标联合检测的结果,差异有统计学意义(P0.05),各项指标检测的特异性比较,差异无统计学意义(P0.05)。结论:新生儿宫内感染采用脐带血PCT检测具有灵敏度高,特异性好的特点,联合IL-6检测是临床诊断新生儿宫内感染的最有效的方式。     

PCT与IL-6联合检测鉴别诊断脓毒性和非脓毒性全身炎症反应综合征的临床价值

目的:探讨降钙素原(PCT)与白细胞介素-6(IL-6)联合检测鉴别诊断ICU患者脓毒性和非脓毒性全身炎症反应综合征(SIRS)的临床价值。方法:选择2013年~2016年入住我院ICU的100例患者,包括61例非脓毒性SIRS患者与39例脓毒症患者,同时选择同期50例健康者作对照,分别设为非脓毒性组、脓毒血症组及对照组,采用电化学发光分析法检测三组血清PCT与IL-6水平,并以PCT为2μg/L和IL-6为50 ng/L为临界值来鉴别非感染性SIRS和脓毒血症,评价联合检测的临床诊断价值。结果:非脓毒性组PCT与IL-6最大值分别为0.91±0.54μg/L、62.77±11.75 ng/L,脓毒血症组为24.49±5.00μg/L、1542.69±361.66 ng/L,对照组为0.08±0.06μg/L、3.68±1.11 ng/L,非脓毒性组与脓毒血症组PCT与IL-6最大值均显著高于对照组(P0.05);与非脓毒性组比较,脓毒血症组PCT与IL-6均显著升高(P0.05)。非脓毒性组PCT2μg/L、IL-650 ng/L的占比分别为21.31%、65.57%,脓毒血症组为92.31%、87.18%,脓毒血症组PCT2μg/L、IL-650 ng/L的占比均显著提高于非脓毒性组(P0.05)。PCT的阳性预期值、灵敏度、特异度均显著高于IL-6,而联合检测的阳性预期值、特异度显著高于IL-6及PCT,联合检测的灵敏度显著高于IL-6,P均0.05。结论:PCT与IL-6联合检测有助于脓毒性和非脓毒性SIRS的鉴别诊断。     

血清PCT、CRP及内毒素在细菌性血流感染所致脓毒症患者中的早期诊断价值

目的:探究血清降钙素原(PCT)、C反应蛋白(CRP)及内毒素在革兰阳性(G+)杆菌与革兰阴性(G-)球菌血流感染所致脓毒症患者中的早期诊断价值。方法:回顾性分析2010年5月~2015年5月期间我院收治确诊的细菌性血流感染所致脓毒症患者123例,测定其血清PCT、CRP及内毒素水平,通过受试者工作特征曲线(ROC)曲线探究三者对细菌性血流感染所致脓毒症的评估价值。结果:血样培养结果显示,35例患者感染G+菌,88例患者感染G-菌;G-菌组患者血清PCT、CRP及内毒素水平均显著高于G+菌组(P0.05);且G+菌组、G-菌组及所有细菌组患者血清PCT、CRP、内毒素间均呈正相关关系(P0.05);ROC曲线显示,血清PCT、CRP和内毒素诊断G+菌血流感染所致脓毒症患者的截断值分别为1.58μg/L、95.25 mg/L与16.71ng/L,其灵敏度和特异度别为(65.92%,88.37%)、(67.39%,84.38%)与(56.34%,78.93%),诊断G-菌血流感染所致脓毒症患者的截断值分别为2.45μg/L、79.45 mg/L与15.54 ng/L,其灵敏度和特异度别为(78.73%,97.13%)、(68.89%,92.38%)与(65.39%,95.33%)。结论:检测血清PCT、CRP、内毒素水平有利于鉴别G-菌和G+菌血流感染所致脓毒症患者,且敏感度、特异度均较高,可用于早期诊断细菌性血流感染所致脓毒症。     

血清PCT、CRP及内毒素在细菌性血流感染所致脓毒症患者中的早期诊断价值

目的:探究血清降钙素原(PCT)、C反应蛋白(CRP)及内毒素在细菌性血流感染所致脓毒症患者中的早期诊断价值。方法:回顾性分析2010年5月~2015年5月期间我院收治确诊的细菌性血流感染所致脓毒症患者123例,测定其血清PCT、CRP及内毒素水平,通过受试者工作特征曲线(ROC)曲线探究三者对细菌性血流感染所致脓毒症的诊断价值。结果:血样培养结果显示,123例细菌性血流感染所致脓毒症患者中存在感染G+菌35例,感染G-菌88例;G+菌组的血清PCT、CRP及内毒素水平明显低于G-菌组(P0.05);且G+菌组、G-菌组及所有细菌组患者三指标两两间均呈正相关关系(P0.05);ROC曲线显示,血清PCT、CRP和内毒素预测G+菌血流感染所致脓毒症患者的临界值分别为1.58μg/L、95.25 mg/L与16.71 ng/L,其灵敏度和特异度别为(65.92%,88.37%)、(67.39%,84.38%)与(56.34%,78.93%),预测G-菌血流感染所致脓毒症患者的临界值分别为2.45μg/L、79.45mg/L与15.54 ng/L,其灵敏度和特异度别为(78.73%,97.13%)、(68.89%,92.38%)与(65.39%,95.33%)。结论:检测血清PCT、CRP、内毒素水平有利于鉴别G-菌和G+菌血流感染所致脓毒症患者,且敏感度、特异度均较高,可用于早期诊断细菌性血流感染所致脓毒症。     

鼻炎患者血清中IL-27、IL-17、IL-10在变应性的表达及临床意义

目的:探讨鼻炎患者血清中白细胞介素-27(IL-27)、白细胞介素-17(IL-17)、白细胞介素-10(IL-10)在变应性中的表达以及临床意义。方法:选取2013年5月到2014年5月我院收治的变应性鼻炎患者60例为研究组,另外选取健康志愿者60例为对照组,应用酶联免疫吸附试验(ELISA)检测入选者血清中的IL-27、IL-17以及IL-10的表达情况,并分析其相关关系。结果:研究组血清中IL-27、IL-10水平显著低于对照组,差异具有统计学意义(P0.05);研究组IL-17水平显著高于对照组,差异具有统计学意义(P0.05);研究组患者血清中的IL-27和IL-17呈负相关关系(r=-0.372,P=0.035),IL-27和IL-10呈正相关关系(r=0.524,P=0.026),而IL-17和IL-10无相关关系(r=0.519,P=0.318)。结论:变应性鼻炎患者中IL-27和IL-10呈低表达,而IL-17呈高表达,IL-27可能对IL-17和IL-10具有免疫调节的作用。     

动态监测血清CRP和PCT水平对脓毒症患者预后判断的临床价值

目的:探讨动态监测血清C反应蛋白(CRP)和降钙素原(PCT)水平对脓毒症患者预后判断的临床应用价值。方法:选择我院重症监护病房2015年1月至2016年3月收治的116例脓毒症患者为研究对象,根据其28 d生存情况分为存活组和死亡组,比较两组患者入院第1、2、3、5、7 d的血清CRP、PCT水平的动态变化,入院第1 d白细胞、乳酸、APACHEⅡ评分和SOFA评分的差异,并分析血清CRP、PCT水平与APACHEⅡ评分和SOFA评分的相关性。结果:存活组和死亡组患者第1、2、3和5 d CRP水平无统计学差异,但死亡组患者第7 d CRP水平明显高于存活组,差异具有统计学意义(P0.05);存活组和死亡组患者第1、2和3 d PCT水平无统计学差异,但死亡组患者第5、7 d PCT水平明显高于存活组,差异具有统计学意义(P0.05);入院1 d,死亡组SOFA评分、APACHE II评分明显高于存活组,差异有统计学意义(P0.05);入院第7 d,患者CRP水平与SOFA评分和APACHE II评分呈正相关(R分别为0.387和0.396,P均0.01);入院第7 d,患者PCT水平与SOFA评分和APACHE II评分呈正相关(R分别为0.472和0.464,P均0.01);CRP为10.0 mg/L时敏感性为79.2%,特异性为70.8%。PCT为2.0μg/L时敏感性为76.3%,特异性为69.4%。结论:CRP、PCT可以评价脓毒性患者的严重程度,并且动态观察其变化有助于预测脓毒症患者的预后。     

CD64指数与PCT、CRP联合检测在呼吸道感染疾病中的诊断价值

目的探讨中性粒细胞CD64指数、降钙素原(PCT)、C-反应蛋白(CRP)对呼吸道细菌感染性疾病的诊断价值。方法采集已确诊的40例呼吸道细菌性感染患者血样和40例呼吸道病毒性感染患者血样做为实验组,40例经体检合格的健康者做对照组。应用流式细胞术检测CD64指数、免疫荧光法检测PCT、免疫散射比浊法检测CRP,并对其结果进行比对分析,应用受试者工作特征曲线(ROC曲线)分析三种指标在呼吸道细菌感染中的诊断价值。结果细菌感染组CD64指数、PCT、CRP指数均值均明显高于对照组(P0.05),病毒感染组只有CRP与对照组差异有统计学意义(P0.05)。细菌感染组中CD64指数、PCT、CRP阳性率均高于对照组,分别为75.0%、72.5%、55.0%,病毒感染组只有CRP阳性率高于对照组。ROC曲线显示:CD64指数、PCT和CRP曲线下面积分别是0.859、0.793、0.675;灵敏度分别是90.0%、88.0%、83.0%;特异度分别82.0%、78.0%、74.0%。结论 CD64指数、PCT、CRP均可作为检测呼吸道细菌感染性疾病的指标。CD64敏感性和特异性最高,CRP敏感性与特异性最低。CD64指数、PCT和CRP联合检测可显著提高呼吸道感染性疾病的诊断灵敏度和特异度,对诊断和鉴别诊断具有重要意义。     

脓毒症诊断的生物学标志物的研究进展

脓毒症是由致病微生物感染引发的全身炎症反应综合征(SIRS),合并血压降低且经快速液体复苏后血压仍不能恢复正常者称为脓毒性休克(Septic shock),其中一部分患者发展为多器官功能障碍综合症(MODS)。由于目前临床上仍缺乏早期敏感性诊断手段,脓毒症病死率居高不下。每10万人口中约50-300人会发生严重脓毒症,其短期死亡率达20%-25%,当发展为脓毒性休克时其死亡率达50%。随着分子生物学和现代生物技术的不断发展,人们发现多种生物标志物在脓毒症的早期诊断、病情及预后判断,疗效评估中发挥重要作用。因此深入了解脓毒症病理生理机制中不同生物标志物的意义及价值,对于脓毒症及其并发症的早期识别及干预,降低患者病死率及改善患者生活质量有积极意义。本文综述了近几年来对脓毒症的诊断和预后有一定价值的主要标志物及其应用。     

联合检测PCT、hs-CRP在新生儿脓毒症诊疗中的应用价值

目的 探讨联合检测血浆降钙素原（PCT）及超敏C反应蛋白（hs-CRP）在新生儿脓毒症诊疗中的应用价值。方法 选取2015年2月至2016年2月大连市妇幼保健院新生儿科88例住院感染患儿作为感染组,同期出生的21例正常足月产儿作为对照组,采用免疫荧光干式定量法进行血浆PCT及hs-CRP的检测。结果 感染组患儿PCT、hs-CRP水平均明显高于对照组,差异有统计学意义（P＜0.01）;2组患儿WBC水平差异无统计学意义（P＞0.05）。轻度脓毒症组、中度脓毒症组、重度脓毒症组各患儿治疗前血浆PCT、hs-CRP水平依次升高,各组间比较差异有统计学意义（P＜0.01）;而各组患儿全血WBC水平比较差异无统计学意义（P＞0.05）。轻度脓毒症组、中度脓毒症组、重度脓毒症组各患儿治疗后血浆PCT、hs-CRP水平较治疗前显著降低（P＜0.01）;而各组患儿全血WBC治疗前后水平比较差异无统计学意义（P＞0.05）。结论 PCT及hs-CRP能反映脓毒症的病情严重程度,联合检测PCT及hs-CRP、并对其动态监测对新生儿脓毒症的早期诊断、疗效评价和预后判断具有重要的应用价值。     

血清降钙素原用于烧伤脓毒症早期诊断的临床研究

目的:分析特重度烧伤患者血清降钙素原(PCT)水平,探讨其在烧伤脓毒症早期诊断中的应用价值。方法:回顾性分析2014年1月至2018年1月解放军总医院第一附属医院烧伤整形科收治的259例特重度烧伤患者的病例资料,根据患者烧伤ICU住院期间是否发生脓毒症分为脓毒症组(86例,359个检测时间点)与非脓毒症组(173例,1591个检测时间点),收集患者年龄、性别、烧伤面积、烧伤深度、合并有吸入性损伤情况等一般资料,记录每个检测时间点的血常规、肝肾功、血气分析及血清PCT值等实验室检查结果。比较两组患者基线情况及各项脓毒症相关生物学指标,分析各项生物学指标脓毒症诊断能力及不同PCT截断值的诊断效能,并绘制受试者工作特征(ROC)曲线,评估各项生物学指标烧伤脓毒症的诊断效能。结果:两组体温、心率、呼吸频率、血小板计数、胆碱酯酶、脑钠肽差异无统计学意义(P0.05),脓毒症组血清PCT水平[4.52(2.35~8.83) vs 1.33(0.74~3.24)]、白细胞计数[24.28 (17.48~33.09) vs 20.11 (16.01~25.4)]、血糖[13.12 (9.66~17.28) vs 10.45 (8.31~13.13)]、肌酐[71.60 (57.94~89.62) vs 61.48(48.87~73.48)]、总胆红素差[30.07(22.63~38.69) vs 21.04(15.53~28.4)]显著高于非脓毒症组,差异有统计学意义(P0.05),其区分脓毒症与非脓毒症的ROC曲线下面积分别为0.801 (95%CI为0.776~0.824,P0.01)、0.617 (95%CI为0.581~0.652,P0.01)、0.658(95%CI为0.624~0.691,P0.01)、0.671(95%CI为0.640~0.702,P0.01)、0.722(95%CI为0.694~0.691,P0.01)。PCT的有效截断值为2.0 ng/mL(敏感度84.4%、特异度62.1%)、3.0 ng/m L(敏感度70.8%、特异度71.8%)、4.0 ng/m L(敏感度58.1%、特异度81.2%)。结论:PCT可作为烧伤脓毒症早期诊断的有效生物学指标。     

Interleukin-27 is elevated in sepsis-induced myocardial dysfunction and mediates inflammation

IntroductionInterleukin (IL)-27 is an important cytokine involved in many human inflammatory diseases. In this study, we investigated its role in the pathogenesis of sepsis-induced myocardial dysfunction (SIMD).MethodsTwenty patients with SIMD and 24 healthy donors were prospectively enrolled. Expression of IL-27 was detected in serum from SIMD patients by ELISA. Cardiac dysfunction was induced by administration of Escherichia coli lipopolysaccharide (LPS) to C57BL/6 (wild type) or IL-27R^−/− mice. IL-27 mRNA in the myocardium was measured by RT-PCR. Cytokine levels in serum were determined by ELISA.ResultsExpression of IL-27 in the serum was markedly increased in patients with SIMD compared with that in controls. Serum IL-27 levels and cardiac IL-27 mRNA expression were significantly increased after LPS injection compared with control specimens. Compared with wild-type mice, IL-27R^−/− mice had higher expression of brain natriuretic peptide, cardiac troponin I, IL-6, IL-12, tumor necrosis factor-α and transforming growth factor-β.ConclusionsIL-27 is an important protective mediator of SIMD.     

血清降钙素原在脓毒症患儿中的应用价值分析

目的:探讨脓毒症患儿血清降钙素原(PCT)水平变化及临床应用价值。方法:对脓毒症组38例患儿(严重脓毒症组16例、非严重脓毒症组22例)血清PCT、C反应蛋白(CRP)水平和白细胞(WBC)计数等指标进行检测,并与非脓毒症组的40例患儿进行比较分析。结果:脓毒症组患儿血清PCT、CRP水平及WBC计数均显著高于非脓毒症组,差异具有统计学意义(P<0.05);血清PCT、CRP水平对诊断脓毒症的敏感性差异无显著性(P>0.05),均显著高于WBC计数,差异具有统计学意义(P<0.05);血清PCT水平特异性、阳性预测值、阴性预测值及约登指数均显著高于CRP和WBC计数,差异具有统计学意义(P<0.05);严重脓毒症组患儿血清PCT水平显著高于非严重脓毒症组,差异具有统计学意义(P<0.05),而两组间血清CRP水平及WBC计数差异不显著(P>0.05)。结论:PCT可作为敏感性的鉴别诊断患儿脓毒症的血清学指标,其效果优于CRP和WBC计数。     

Interleukin-6 and procalcitonin in children with sepsis and septic shock

Objectives. To examine the behavior of interleukin-6 (IL-6) and procalcitonin (PCT) and verify whether they can be used to differentiate children with septic conditions. Methods. Septic children aged between 28 days and 14 years, prospectively enrolled from 01/2004 to 12/2005, were divided into sepsis (SG; n = 47) and septic shock (SSG; n = 43) groups. IL-6 and PCT were measured at admission (T0) and 12 h later (T12h). PCT results were classed as: 0.5 ng/mL = sepsis unlikely; 0.5 to <2 = sepsis possible; 2 to <10 = systemic inflammation; 10 = septic shock. Results. Ninety children were included. At T0, there was a higher frequency of SSG with higher PCT compared with SG [SSG: 30 (69.7%) > SG: 14 (29.8%); p < 0.05]. Similar results were observed at T12h. PRISM was significantly higher for SSG patients with higher PCT than SG patients. At T0, IL-6 levels were higher in SSG [SSG: 213.10 (10.85–396.70) > SG: 63.21 (0.86–409.82); p = 0.001], but not statistically different at T12h. IL-6 levels positively correlated with PRISM score in SSG patients at admission (p = 0.001; r = 0.86). Conclusion. PCT and IL-6 appear to be helpful in early assessment of pediatric sepsis, are of diagnostic value at admission, and are related to disease severity.     

Clinical Usefulness of Procalcitonin and C-Reactive Protein as Outcome Predictors in Critically Ill Patients with Severe Sepsis and Septic Shock

Sepsis is a major cause of mortality and morbidity in critically ill patients. Procalcitonin (PCT) and C-reactive protein (CRP) are the most frequently used biomarkers in sepsis. We investigated changes in PCT and CRP concentrations in critically ill patients with sepsis to determine which biochemical marker better predicts outcome. We retrospectively analyzed 171 episodes in 157 patients with severe sepsis and septic shock who were admitted to the Samsung Medical Center intensive care unit from March 2013 to February 2014. The primary endpoint was patient outcome within 7 days from ICU admission (treatment failure). The secondary endpoint was 28-day mortality. Severe sepsis was observed in 42 (25%) episodes from 41 patients, and septic shock was observed in 129 (75%) episodes from 120 patients. Fifty-five (32%) episodes from 42 patients had clinically-documented infection, and 116 (68%) episodes from 99 patients had microbiologically-documented infection. Initial peak PCT and CRP levels were not associated with treatment failure and 28-day mortality. However, PCT clearance (PCTc) and CRP (CRPc) clearance were significantly associated with treatment failure (p = 0.027 and p = 0.030, respectively) and marginally significant with 28-day mortality (p = 0.064 and p = 0.062, respectively). The AUC for prediction of treatment success was 0.71 (95% CI, 0.61–0.82) for PCTc and 0.71 (95% CI, 0.61–0.81) for CRPc. The AUC for survival prediction was 0.77 (95% CI, 0.66–0.88) for PCTc and 0.77 (95% CI, 0.67–0.88) for CRPc. Changes in PCT and CRP concentrations were associated with outcomes of critically ill septic patients. CRP may not be inferior to PCT in predicting outcome in these patients.     

The Circulating Glycosaminoglycan Signature of Respiratory Failure in Critically Ill Adults

Systemic inflammatory illnesses (such as sepsis) are marked by degradation of the endothelial glycocalyx, a layer of glycosaminoglycans (including heparan sulfate, chondroitin sulfate, and hyaluronic acid) lining the vascular lumen. We hypothesized that different pathophysiologic insults would produce characteristic patterns of released glycocalyx fragments. We collected plasma from healthy donors as well as from subjects with respiratory failure due to altered mental status (intoxication, ischemic brain injury), indirect lung injury (non-pulmonary sepsis, pancreatitis), or direct lung injury (aspiration, pneumonia). Mass spectrometry was employed to determine the quantity and sulfation patterns of circulating glycosaminoglycans. We found that circulating heparan sulfate fragments were significantly (23-fold) elevated in patients with indirect lung injury, while circulating hyaluronic acid concentrations were elevated (32-fold) in patients with direct lung injury. N-Sulfation and tri-sulfation of heparan disaccharides were significantly increased in patients with indirect lung injury. Chondroitin disaccharide sulfation was suppressed in all groups with respiratory failure. Plasma heparan sulfate concentrations directly correlated with intensive care unit length of stay. Serial plasma measurements performed in select patients revealed that circulating highly sulfated heparan fragments persisted for greater than 3 days after the onset of respiratory failure. Our findings demonstrate that circulating glycosaminoglycans are elevated in patterns characteristic of the etiology of respiratory failure and may serve as diagnostic and/or prognostic biomarkers of critical illness.     

血清CRP, PCT 水平在脓毒血症患者中的早期诊断及预后评估价值

目的:探讨血清C反应蛋白(CRP)、降钙素原(PCT)水平在脓毒血症患者中的早期诊断及预后评估价值。方法:100例重症患者按照是否发生全身感染分为脓毒血症组67例、非脓毒血症组33例;脓毒血症组按照预后分为存活组42例、死亡组25例,同时选取健康者30例为正常对照组,进入重症监护室24小时后,抽取患者静脉血8ml,CRP采用免疫比浊法,PCT采用免疫层析法检测,分析CRP、PCT水平在脓毒血症患者早期诊断及预后价值。结果:CRP、PCT水平在组间差异具有统计学意义(P0.05),其中脓毒血症组和非脓毒血症组水平均高于对照组,脓毒血症组水平高于非脓毒血症组,差异具有统计学意义(P0.05);脓毒血症存活组患者CRP、PCT随着住院时间延长逐渐降低,差异具有统计学意义(P0.05),死亡组从第3天较第1天升高,第7、9天逐渐降低,但降低幅度不大,差异无统计学意义(P0.05);同一住院时间死亡组CRP、PCT水平均高于存活组,差异具有统计学意义(P0.05)。CRP、PCT联合并联检测对于早期发现脓毒血症具有较高的灵敏度。结论:PCT、CRP联合并联检测对于脓毒血症有更好的早期诊断价值,其表达水平可以较好地反映患者预后。     

微小RNA-223(miR-223)在脓毒症早期诊断、炎症程度评估中的价值研究

摘要 目的：分析微小RNA-223（miR-223）在脓毒症的早期诊断、炎症严重程度评估中的检测价值。方法：通过便利抽样法选定本院2020年5月至2022年5月住院的30例脓毒症患者作为观察组,选取同期门诊体检中心30例健康体检者作为对照组,检测、比较两组外周血miR-223、血清降钙素原（PCT）、C反应蛋白（CRP）,比较脓毒症患者中轻度组、严重组外周血miR-223、血清PCT、CRP,比较脓毒症患者中死亡组、存活组外周血miR-223、血清PCT、CRP,Spearman分析miR-223与PCT、CRP的相关性,绘制ROC曲线,计算曲线下面积（AUC）,分析miR-223与PCT、CRP对脓毒症的预测价值。结果：观察组外周血miR-223、血清PCT、CRP水平均高于对照组,P＜0.05（差异均具有统计学意义）。严重组外周血miR-223、血清PCT、CRP水平均高于轻度组,P＜0.05（差异均具有统计学意义）。死亡组外周血miR-223、血清PCT、CRP水平均高于存活组,P＜0.05（差异均具有统计学意义）。miR-223与PCT、CRP均呈正相关性,P＜0.05（差异均具有统计学意义）（r值=0.796、0.785）。ROC曲线结果显示：miR-223+PCT+CRP诊断脓毒症的灵敏度（89.54%）、特异度（86.52%）明显高于miR-223（82.37%、80.44%）、PCT（78.34%、75.34%）、CRP（75.12%、74.07%）,P＜0.05（差异均具有统计学意义）。结论：脓毒症患者机体外周血miR-223水平较高,且外周血miR-223与血清PCT、CRP呈正相关性,miR-223联合PCT、CRP可提高脓毒症诊断灵敏度、特异度。