可溶性髓细胞触发受体-1在脓毒症诊断及病情判断的价值

目的 通过检测人血浆可溶性髓细胞触发受体-1(sTREM-1)水平,研究sTREM-1对脓毒症的诊断价值和在评估脓毒症严重程度及预后的意义.方法 将2010-05～2011-01收治的64例系统性炎症反应综合征(SIRS)患者,根据脓毒症诊断标准分为脓毒症组43例(脓毒症17例、严重脓毒症14例和脓毒性休克12例)、SIRS组(非感染)21例,根据28 d预后将脓毒症组分为存活组29例和死亡组14例.收集所有患者第1天的血浆,追踪留取脓毒症患者第1、4、7天的血浆,并记录对应时间的心率、白细胞计数、C反应蛋白(CRP)等临床数据.结果.患者入ICU第1天脓毒症组sTREM-1高于SIRS组[(147.28±58.32 pg/mL]比(81.61±24.57 pg/mL,P<0.05)];sTREM-1的受试者特征操作曲线下面积高于降钙素原(PCT)、CRP、IPS评分;sTREM-1水平变化与APACHEⅡ评分变化呈正相关(rs=0.446,P=0.000).sTREM-1水平在存活组则呈逐渐下降趋势,在死亡组随时间推移无明显变化趋势,死亡组sTREM-1于病程第4天起高于存活组同期对应指标(P＜0.05).结论.检测血浆sTREM-1可作为脓毒症早期诊断的指标,在诊断上具有良好的敏感性和特异性,诊断价值优于PCT、CRP及IPS评分等指标;动态监测检测血浆sTREM-1能反映疾病的严重程度及预后.     

可溶性髓样细胞触发受体－1在感染性疾病中的变化研究进展

髓样细胞触发受体－1是新近发现的细胞膜受体,选择性地表达于中性粒细胞、成熟单核．巨噬细胞等髓样细胞表面,在炎症反应中发挥主导作用。其通过特殊的细胞信号转导途径促进促炎介质的产生、抑制抗炎介质的表达而激活和放大炎症级联反应。其释放的亚型可溶性髓样细胞触发受体－1在众多感染性疾病中均升高,能够反映感染的严重程度。     

血清可溶性髓样细胞触发受体-1动态水平与ICU脓毒症患者预后的相关性研究

目的 探讨血清可溶性髓样细胞触发受体-1(sTREM-1)动态水平与脓毒症患者预后的相关性,为临床提供参考。方法 回顾性分析80例脓毒症患者的临床资料。根据患者随访28 d的预后情况分组,死亡患者为预后不良组（19例）,未死亡患者为预后良好组（61例）。对比两组患者序贯器官衰竭（SOFA）评分、急性生理与慢性健康量表（APACHEⅡ）评分及血清sTREM-1动态水平。Pearson相关分析血清sTREM-1动态水平与SOFA评分、APACHEⅡ评分的相关性。采用受试者操作特征（ROC）曲线对SOFA评分、APACHEⅡ评分及血清sTREM-1动态水平判断不良预后的价值进行分析。结果 预后不良组患者入院1 d、3 d、5 d的SOFA评分、APACHEⅡ评分及血清sTREM-1动态水平显著高于预后良好组（P <0.05）;Pearson相关分析结果显示血清sTREM-1动态水平与SOFA评分、APACHEⅡ评分具有正相关性（P <0.05）;ROC分析显示SOFA评分、APACHEⅡ评分及血清sTREM-1动态水平对判断脓毒症患者不良预后的准确性均较高。结论 ICU脓毒症病情...     

脓毒症患者血浆可溶性髓系细胞表达的触发受体-1水平及意义

目的 观察脓毒症患者血浆可溶性髓系细胞表达的触发受体-1(sTREM-1)动态变化,探讨其与感染相关器官功能衰竭评分系统(SOFA)评分对预后的评价.方法 采用前瞻性随机对照研究.选择2009年5月至2010年6月天津医科大学第二医院重症监护病房(ICU)收治的32例脓毒症患者,根据28 d转归分为生存组(21例)和死亡组(11例),检测患者入院后1、3、7 d的血小板计数(PLT),并进行SOFA评分;采用酶联免疫吸附法(ELISA)检测血浆sTREM-1浓度.以同期25例健康体检者作为对照.结果 对照组PLT为(248.88±48.62)×109/L,sTREM-1为25.7(21.5,53.3)ng/L.脓毒症死亡组PLT(×109/L)1 d时即明显下降,且随病情进展呈下降趋势(1、3、7 d分别为95.77±47.42、91.92±35.78、82.31±31.04),SOFA评分(分)亦随之下降(1、3、7 d分别为12.36±4.30、10.90±5.32、7.87±4.60),sTREM-1(ng/L)1 d时即明显升高,且随病程进展呈上升趋势[1、3、7 d分别为360.5(262.2,434.5)、373.5(263.1,495.6)、496.6(380.0,571.8)3;生存组PLT(×109/L)3 d时降低后有所升高(1、3、7 d分别为152.94±85.59、136.18±75.30、165.41±61.36),SOFA评分(分)则逐渐下降(1、3、7 d分别为6.76±2.71、4.29±2.31、2.52±1.03),sTREM-1(ng/L)峰值出现在1 d时,然后随病程进展逐渐下降[1、3、7 d分别为204.1(175.0,269.6)、164.0(145.9,194.2)、81.5(62.1,109.0)].与生存组比较,死亡组各时间点PLT明显下降,SOFA评分、sTREM-1明显升高(P＜0.05或P＜0.01).血浆sTREM-1水平与PLT呈显著负相关(r=-0.257,P=0.042),与SOFA评分呈显著正相关(r=0.736,P=0.002).结论 脓毒症患者sTREM-1水平在发病早期即明显升高,其动态变化联合SOFA评分可能更有助于判断预后.

Abstract：

Objective To observe the dynamic changes in plasma soluble triggering receptor expressed on myeloid cells-1 (sTREM-1), and to approach the effect on predicting outcome of the patient with sepsis combined with sepsis-related organ failure assessment (SOFA) score. Methods Using prospective,randomly control study design, 32 patients admitted to intensive care unit (ICU) of the Second Hospital of Tianjin Medical University suffering from sepsis between May 2009 and June 2010 were collected. They were divided into survival group (n = 21) and non-survival group (n=11) according to 28-day survival. Platelet count (PLT) was determined on the 1st, 3rd, 7th day and SOFA score was assessed. Levels of sTREM-1 in plasma were measured by enzyme linked immunosorbant assay (ELISA). Twenty-five health volunteers served as controls. Results The PLT was (248. 88 ± 48.62)×109/L and the level of sTREM-1 was 25.7 (21.5, 53.3) ng/L in the control group. In non-survivors, the level of PLT (×109/L) was significantly lower on 1st day with a tendency of degression (the level on 1st, 3rd, 7th day was 95. 77 ±47.42, 91. 92±35.78, 82.31±31.04, respectively), SOFA score decreased gradually (the score on 1st,3rd, 7th day was 12.36±4.30, 10.90±5.32, 7.87±4.60, respectively). On the contrary, the level of sTREM-1 (ng/L) was significantly higher on 1st day with a tendency of elevation [the level on 1st, 3rd, 7th day was 360. 5 (262. 2, 434. 5), 373. 5 (263.1, 495. 6), 496. 6 (380. 0, 571. 8), respectively]. In survivors,PLT (×109/L) began to decrease on the 3rd day, and then it increased (the level on 1st, 3rd, 7th day was 152. 94±85. 59, 136.18±75. 30, 165. 41±61. 36, respectively), SOFA score lowered gradually (the score on 1st, 3rd, 7th day was 6. 76±2. 71, 4. 29±2. 31, 2. 52±1. 03, respectively), the peak level of sTREM-1 (ng/L) appeared on the 1st day, then it decreased gradually [the level on 1st, 3rd, 7th day was 204.1 (175.0, 269.6), 164.0 (145.9, 194.2), 81.5 (62.1, 109.0), respectively]. PLT was significantly lower,and SOFA score and sTREM-1 were significantly higher in non-survivors than those of survivors at different time points (P＜0. 05 or P＜0. 01). The level of sTREM-1 showed obvious negative correlation with PLT (r=-0.257, P = 0.042), positive correlation with SOFA score (r=0.736, P = 0.002). Conclusion The plasma sTREM-1 concentration was elevated at the early stage in patients with sepsis. Dynamic changes in sTREM-1 level combined with SOFA score may be helpful in predicting outcome of the patient with sepsis.     

乌司他丁对严重脓毒症患者外周血单核细胞Toll样受体4表达的影响

目的 观察乌司他丁(UTI)对严重脓毒症患者外周血单核细胞Toll样受体4(TLR4)表达的影响,从而进一步了解UTI抑制炎症反应的作用机制.方法 70例严重脓毒症患者随机分为对照组(30例)和UTI组(40例),UTI组在对照组常规治疗基础上加用UTI(质量分数5%葡萄糖250 ml+UTI 600 kU)静脉滴注,每日2次,连用3 d.分别在治疗前及治疗后1、2、3 d采集动脉血,用流式细胞仪检测TLR4表达,用酶联免疫吸附法(EuSA)检测血浆肿瘤坏死因子-α(TNF-α)和白细胞介素-6(L-6)浓度.结果 两组治疗后单核细胞表面TLR4表达及血浆TNF-α、IL-6浓度均较治疗前显著增加(P均<0.05);UTI组各指标值均较对照组上升幅度低(P均<0.05).结论 UTI可有效抑制单核细胞表面TLR4表达,抑制炎症因子释放,对严重脓毒症患者有一定的保护作用.     

血浆可溶性髓样细胞触发受体-1诊断脓毒症价值的Meta分析

目的 研究血浆可溶性髓样细胞触发受体-1在脓毒症诊断中的价值.方法 检索PubMed、Ovid、Springer数据库、万方数据库中1991年到2012年国内外公开发表的关于血浆可溶性髓样细胞触发受体-1诊断脓毒症的相关文献,根据纳入和排除标准筛选文献并提取可用数据,通过Meta-DiSc及Stata软件进行Meta分析.结果 根据纳入标准筛选出7篇文献,各个研究截断值差异较大.异质性检验表明资料存在异质性(I2＞50％,P ＜0.05),采用随机模型合并诊断指标.合并后的灵敏度81％,95％ CI:0.76～0.86;特异度81％,95％ CI:0.76 ～0.86;诊断优势比30.03,95％CI:7.89 ～ 114.37,SROC曲线的曲线下面积为0.905 9,Q*指数为0.837 6.Deek漏斗图显示无明显发表偏倚.结论 血浆可溶性髓样细胞触发受体-1用于脓毒症诊断具有一定的临床价值,但诊断脓毒症的最佳截断值有待进一步研究.     

脓毒症患者血浆可溶性髓系细胞表达的触发受体-1水平及意义

Objective To observe the dynamic changes in plasma soluble triggering receptor expressed on myeloid cells-1 (sTREM-1), and to approach the effect on predicting outcome of the patient with sepsis combined with sepsis-related organ failure assessment (SOFA) score. Methods Using prospective,randomly control study design, 32 patients admitted to intensive care unit (ICU) of the Second Hospital of Tianjin Medical University suffering from sepsis between May 2009 and June 2010 were collected. They were divided into survival group (n = 21) and non-survival group (n=11) according to 28-day survival. Platelet count (PLT) was determined on the 1st, 3rd, 7th day and SOFA score was assessed. Levels of sTREM-1 in plasma were measured by enzyme linked immunosorbant assay (ELISA). Twenty-five health volunteers served as controls. Results The PLT was (248. 88 ± 48.62)×109/L and the level of sTREM-1 was 25.7 (21.5, 53.3) ng/L in the control group. In non-survivors, the level of PLT (×109/L) was significantly lower on 1st day with a tendency of degression (the level on 1st, 3rd, 7th day was 95. 77 ±47.42, 91. 92±35.78, 82.31±31.04, respectively), SOFA score decreased gradually (the score on 1st,3rd, 7th day was 12.36±4.30, 10.90±5.32, 7.87±4.60, respectively). On the contrary, the level of sTREM-1 (ng/L) was significantly higher on 1st day with a tendency of elevation [the level on 1st, 3rd, 7th day was 360. 5 (262. 2, 434. 5), 373. 5 (263.1, 495. 6), 496. 6 (380. 0, 571. 8), respectively]. In survivors,PLT (×109/L) began to decrease on the 3rd day, and then it increased (the level on 1st, 3rd, 7th day was 152. 94±85. 59, 136.18±75. 30, 165. 41±61. 36, respectively), SOFA score lowered gradually (the score on 1st, 3rd, 7th day was 6. 76±2. 71, 4. 29±2. 31, 2. 52±1. 03, respectively), the peak level of sTREM-1 (ng/L) appeared on the 1st day, then it decreased gradually [the level on 1st, 3rd, 7th day was 204.1 (175.0, 269.6), 164.0 (145.9, 194.2), 81.5 (62.1, 109.0), respectively]. PLT was significantly lower,and SOFA score and sTREM-1 were significantly higher in non-survivors than those of survivors at different time points (P＜0. 05 or P＜0. 01). The level of sTREM-1 showed obvious negative correlation with PLT (r=-0.257, P = 0.042), positive correlation with SOFA score (r=0.736, P = 0.002). Conclusion The plasma sTREM-1 concentration was elevated at the early stage in patients with sepsis. Dynamic changes in sTREM-1 level combined with SOFA score may be helpful in predicting outcome of the patient with sepsis.     

血浆可溶性髓样细胞触发受体1对成人脓毒症患者诊断价值的Meta分析

目的评价血浆可溶性髓样细胞触发受体1（sTREM-1）对成人脓毒症患者的诊断价值。 方法检索PubMed、Embase、Cochrane图书馆、中国生物医学文献数据库（CBM）、中国期刊全文数据库（CNKI）、万方数据库和中文科技期刊全文库（VIP）数据库从建库至2017年5月发表的有关血浆sTREM-1对成人脓毒症患者诊断价值的文献。采用双变量模型计算合并诊断比值比（DOR）、合并敏感度、合并特异度、合并阳性似然比（PLR）及合并阴性似然比（NLR）。进行合并受试者工作特征（SROC）曲线，获得曲线下面积（AUC）。 结果最终纳入30篇文献，共3 349例患者。Meta分析显示，合并DOR为20.03[95%置信区间（CI）（12.20，32.87）]、合并敏感度为0.82[95% CI（0.77，0.86）]、合并特异度为0.81 [95% CI（0.76，0.85）]、合并PLR为4.36 [95% CI（3.37，5.64）]、合并NLR为0.22[95%CI（0.16，0.29）]。SROC曲线显示合并AUC为0.89[95%CI（0.85，0.91）]。 结论血浆sTREM-1对诊断成人脓毒症患者具有中度诊断价值。     

脓毒症相关急性肺损伤患者趋化因子受体4、可溶性髓样细胞触发受体样转录因子-1检测价值探讨

目的 探讨脓毒症相关急性肺损伤(ALI)患者血清趋化因子受体4(CXCR4)、可溶性髓样细胞触发受体样转录因子-1(sTLT-1)水平与预后的关系。方法 选取脓毒症相关ALI患者90例(ALI组),脓毒症未出现ALI患者50例(非ALI组),同期健康体检者50例(对照组),ALI患者根据肺损伤程度进一步分为高危组、中危组、低危组,根据临床结局分为死亡组和存活组。分别比较不同分组患者血清CXCR4、sTLT-1水平,分析血清CXCR4、sTLT-1水平与急性生理学与慢性健康状况评分系统II(APACHE II)的相关性,评估血清CXCR4、sTLT-1单独及联合对脓毒症ALI患者不良预后的预测效能。结果 对照组、非ALI组、ALI组,低危组、中危组、高危组血清CXCR4、sTLT-1水平均依次升高(P<0.05);死亡组血清CXCR4、sTLT-1水平均高于存活组(P<0.05);CXCR4、sTLT-1与APACHE II评分呈正相关(P<0.05);血清CXCR4、sTLT-1水平单独及联合预测ALI患者不良预后的敏感度/特异度分别为84.20%/69.00%、73...     

可溶性髓细胞触发受体-1对伴肺部渗出脓毒症患者的临床价值

目的检测新入ICU患者血清和肺泡灌洗液可溶性髓细胞触发受体-1（sTREM-1）,探讨sTREM-1在伴肺部渗出的脓毒症（ sepsis ）患者中的变化及意义。方法选择我院ICU 2012-09～2013-09收治的伴有肺部渗出及全身炎症反应综合征（ SIRS）的机械通气患者70例作为试验组,根据其临床特点及病原学检测结果,分为脓毒症组39例,非感染性SIRS组31例。两组在入院的第1、4、7天和第1、4天分别收集血清和肺泡灌洗液（ BALF）标本,同期纳入血清对照组30例,BALF对照组35例。采用酶联免疫吸附试验（ELISA）测定sTREM-1质量浓度,比较不同部位sTREM-1质量浓度与同期检测各种生物标志物对脓毒症的诊断及预后判断参数。结果①入院第1天脓毒症组血清sTREM-1质量浓度[425.20（653．72）pg/mL],与血清对照组（84.33±24．03）pg/mL及SIRS组[99．74（67．54）pg/mL]比较差异均有统计学意义（P＜0．01）;②入院第1天区分脓毒症与SIRS诊断的各参数ROC曲线下面积（ AUC）依次为血清sTREM-1（0．796）、CRP（0．668）,而入院第4天两组比较仅血清 sTREM -1差异有统计学意义（P ＝0.001）,其AUC为0．837;③各时间点脓毒症死亡组血清sTREM-1质量浓度均显著高于生存组（P＜0．05）,其中入院第1天判断脓毒症组预后各参数AUC依次为血清sTREM-1（0．792）、SOFA评分（0．756）;入院第4天依次为 SOFA 评分（0．801）、APACHEⅡ评分（0．757）、血清sTREM-1（0．696）;入院第7天依次为APACHEⅡ评分（0．835）、血清sTREM-1（0．725）;④入院第1、4及7天脓毒症生存组肺泡灌洗液sTREM-1质量浓度分别为（99．22±129．94,204．67±147．42,169．51±157．04）pg/mL,差异有统计学意义（P＝0．001）,而脓毒症死亡组不同时间点间比较差异无统计学意义（P＞0．05）。结论血清sTREM-1在伴有肺部渗出的脓毒症患者中呈高表达,显著高于SIRS患者及健康人群,其在脓毒症早期具有优于其他标志物的诊断与判断预后的能力,且肺泡灌洗液sTREM-1在病程后期下降,提示预后良好。     

可溶性髓样细胞触发受体-1对脓毒血症早期诊断价值

目的探讨可溶性髓样细胞触发受体-1(soluble triggering receptor expressed on myeloid cells-1,sTREM-1)对脓毒血症的早期诊断价值。方法 81例全身炎症反应综合征患者,根据脓毒血症诊断标准分为脓毒血症组35例与SIRS组46例,选择体检健康者30名为对照组,检测3组血清sTREM-1、降钙素原(procalcitonin,PCT)、C反应蛋白(C reactive protein,CRP)水平。结果脓毒血症组与SIRS组患者血清sTREM-1,PCT及CRP水平均高于对照组(P<0.05);脓毒血症组血清sTREM-1与PCT水平高于SIRS组(P<0.05),CRP水平与SIRS组比较差异无统计学意义(P>0.05)。结论血清sTREM-1是脓毒血症早期诊断的辅助指标,其灵敏度和特异性高于PCT和CRP。     

Soluble triggering receptor expressed on myeloid cells 1 and the diagnosis of sepsis

Purpose

Early diagnosis and assessment of the systemic inflammatory response to infection are difficult with usual markers (fever, leukocytosis, C-reactive protein [CRP]). Triggering receptor expressed on myeloid cells-1 (TREM-1) expression on phagocytes is up-regulated by microbial products. We studied the ability of soluble TREM-1 (sTREM-1) to identify patients with sepsis.

Materials and Methods

Plasma samples were obtained on intensive care unit admission from patients with systemic inflammatory response syndrome for sTREM-1 measurement.

Results

Soluble TREM-1, CRP concentrations and erythrocyte sedimentation rate (ESR) were higher in the sepsis group (n = 52) than in the non-infectious systemic inflammatory response syndrome group (n = 43; P = .00, .02, and .001, respectively). Soluble TREM-1, CRP concentrations, white blood cell count and ESR were higher in the sepsis group than in the non SIRS group (n = 37; P = .04, .00, .01, and .00, respectively).In a receiver-operating characteristic curve analysis, ESR, CRP and sTREM-1 had an area under the curve larger than 0.65 (P = .00), in distinguishing between septic and non-infectious SIRS patients. CRP, ESR, sTREM-1 had a sensitivity of 60%, 70% and 70% and a specificity of 60%, 69% and, 60% respectively in diagnosing infection in SIRS.

Conclusion

C-reactive protein and ESR performed better than sTREM-1 and white blood cell count in diagnosing infection.     

脓毒症患者血清可溶性髓系细胞表达的触发受体-1水平及与预后的关系

目的 探讨脓毒症患者血清可溶性髓系细胞表达的触发受体-1(sTREM-1)水平与疾病预后的关系.方法 采用前瞻性对照研究方法.选择2009年3月至12月天津医科大学第二医院重症监护病房(ICU)收治的50例脓毒症患者,按病情分为普通脓毒症组(28例)、严重脓毒症组(22例),按28 d转归分为生存组(34例)、死亡组(16例).于发病1、3、7 d检测血常规、血生化、血气分析、C-反应蛋白(CRP)、降钙素原(PCT),并进行急性生理学与慢性健康状况评分系统Ⅱ(APACHE Ⅱ)评分,采用酶联免疫吸附法(ELISA)检测血清sTREM-1浓度.对sTREM-1与APACHE Ⅱ评分、血白细胞计数(WBC)、CRP进行相关性分析,并进行Logistic回归分析.以同期30例健康体检者作为健康对照组.结果 50例脓毒症患者发病1 d血清sTREM-1浓度(ng/L)明显高于健康对照组(52.80±9.30比23.29±6.22,P＜0.01).严重脓毒症组发病1、3、7 d血清sTREM-1浓度(ng/L:58.25±10.59、65.75±13.57、50.18±21.73)均明显高于普通脓毒症组(48.55±5.20、42.85±8.54、34.02±12.86,P＜0.05或P＜0.01).生存组发病1、3、7 d sTREM-1浓度(ng/L)逐渐下降(53.07±10.47、45.04±9.89、32.84±8.42),7 d时接近正常水平;死亡组发病1、3、7 dsTREM-1浓度(ng/L)逐渐上升(52.27±6.42、69.67±12:12.83、75.705±10.55),3 d、7 d时明显高于生存组(均P＜0.01).血清sTREM-1浓度与APACHE Ⅱ评分呈显著正相关(r=0.657,P＜0.01),与血WBC无相关性(r=0.023,P＞0.05),与CRP有一定相关性(r=0.150,P＜0.10).Logistic回归分析显示sTREM-1[相对比值比(OR)=0.893,P=0.000]、APACHE Ⅱ评分(OR=0.771,P=0.000)为影响预后的死亡危险因素,受试者工作特征曲线下面积(AUC)分别为0.868、0.930;以sTREM-1为50 ng/L评价预后的敏感性为81.1%,特异性为74.5%APACHE Ⅱ评分20分的敏感性为83.8%,特异性为86.3%.结论 在脓毒症发病早期血清sTREM-1浓度升高,其变化趋势可能与疾病严重程度有关,与APACHE Ⅱ评分有显著的相关性,是影响预后的死亡危险因素之一.

Abstract：

Objective To approach the relationship between the contents of soluble form of triggering receptor expressed on myeloid cells-1 (sTREM-1) and prognosis in patients with sepsis. Methods Using prospective, control study design, a total of 50 patients with sepsis who were admitted in intensive care unit (ICU) of the Second Hospital of Tianjin Medical University from March to December in the year of 2009 were enrolled. Firstly, the patients were divided into sepsis (n=28) and severe sepsis (n=22) groups according to the patients' condition. Then the patients were divided into survival group (n = 34) and death group (n = 16)according to the clinical outcome at 28 days after onset of sepsis. Clinical and laboratory data including blood routine tests, blood chemistry, blood gas analysis, C-reactive protein (CRP) and procalcitonin (PCT) were collected on the 1st, 3rd and 7th day after onset. Acute physiology and chronic health evaluation Ⅱ(APACHE Ⅱ ) score was determined. sTREM-1 levels were determined using enzyme linked immunosorbent assay (ELISA) method. Correlation analysis of the sTREM-1, APACHE I score, white blood cell count (WBC) and CRP, using Logistic regression analysis. A total of 30 healthy persons were enrolled into the control group. Results The sTREM-1 levels (ng/L) in 50 septic patients on the 1st day were higher than those of the healthy persons (52. 80±9. 30 vs. 23. 29±6. 22, P＜0. 01). The sTREM-1 levels (ng/L) in severe sepsis group on the 1st, 3rd and 7th day (58. 25±10. 59, 65. 75±13. 57, 50.18±21. 73) were higher than those of the sepsis group (48.55±5.20, 42.85±8.54, 34.02±12.86, P＜0.05 or P＜0.01). The sTREM-1 levels (ng/L) of the survival group on the 1st, 3rd and 7th day (53. 07± 10. 47, 45. 04±9. 89,32. 84 ±8. 42) were decreased with the progression of the ailment. The sTREM-1 levels did not differ significantly between the control group and survival group on the 7th day (P＞0. 05). The sTREM-1 levels (ng/L) in the death group on the 1st, 3rd and 7th day were increased with the progression of the ailment (52.27±6.42, 69.67±12.83, 75. 70± 10. 55), and the level was significantly higher than that in survival group on the 3rd and 7th day (both P＜0. 01). The contents of sTREM-1 were positive correlated with APACHE Ⅱ score (r= 0.657, P＜0. 01), but not correlated with WBC (r= 0.023, P＞0. 05), whilesomewhat correlated with CRP (r=0. 150, P＜0.10). Logistic regression analysis showed that sTREM-1 [odds ratio (OR) = 0. 893,P = 0. 000] and APACHE I score (OR = 0.771, P = 0.000) might be potential prognostic factors for septic patients. The area under the receiver operator characteristic curve was 0. 868 and 0.930. The sensitivity of prognostic evaluation was 81.1% and specificity was 74.5% with sTREM-1 50 ng/L, and the sensitivity was 83. 8% and specificity was 86. 3% with APACHE Ⅱ score 20 to estimate the outcome. Conclusion The serum sTREM-1 are elevated at early stage in sepsis patients. It can reflect the severity of the condition. The sTREM-1 level, which might be considered as a potential prognostic factor for septic patients, is significantly correlated with APACHE Ⅱ score.     

Diagnostic role of soluble triggering receptor expressed on myeloid cell-1 in patients with sepsis

BACKGROUND:

Biomarkers may be helpful in risk stratification and prediction of mortality in septic patients. This study aimed to investigate the diagnostic role of soluble triggering receptor expressed on myeloid cell-1(sTREM-1), procalcitonin (PCT), C-reactive protein (CRP) and other inflammatory markers in patients with sepsis.

METHODS:

A total of 56 patients with systemic inflammation response syndrome (SIRS) who had been admitted to the ICU department of the Second Hospital of Tianjin Medical University between May 2009 and July 2010 were enrolled. They were divided into a sepsis group (n=32) and a SIRS group (n=24). Twenty-five non-SIRS patients served as controls. The sepsis group was sub-divided into a survival group and a death group according to 28-day prognosis. The values of sTREM-1, PCT, CRP, white blood cell (WBC), and neutrophil count percentage (N) were measured. Acute physiology and chronic health evaluation II (APACHE II) score were determined within 24 hours. The correlation between sTREM-1 and APACHE II score was analyzed. Quantitative data were analyzed by the F test or the Kruskal-Wallis test.

RESULTS:

The plasma level of sTREM-1 in the sepsis group was significantly higher than that in the SIRS group and control group. The plasma level of sTREM-1 in the non-survival group was significantly higher than that in the survival group. In the sepsis group, the plasma sTREM-1 level was positively correlated with APACHE II score (r=0.426, P= 0.032). The area under the ROC curve of sTREM-1 was 0.935, larger than that of PCT and CRP.

CONCLUSION:

Plasma sTREM-1 is useful in the diagnosis of sepsis at early stage. The increased level of sTREM-1 during the first 24 hours may be correlated with poor outcome of patients with sepsis.KEY WORDS: Sepsis, sTREM-1, Acute physiology and chronic health evaluation II score, Enzyme-linked immunosorbent assay, Procalcitonin, C-reactive protein     

血清可溶性髓系细胞触发受体-1检测在细菌性肺炎诊断中的意义

目的:检测细菌性肺炎患者外周血可溶性髓系细胞触发受体-1(sTREM-1)的水平,观察sTREM-1对诊断细菌性肺炎的意义。方法:应用双抗体夹心酶联免疫吸附法(ELISA)检测75例细菌性肺炎患者及72例正常健康体检者血清sTREM-1、降钙素原(PCT)、C反应蛋白(CRP)的水平。应用受试者工作特征(ROC)曲线研究sTREM-1的诊断效力。对肺炎组进一步进行亚组分析,并将sTREM-1水平与临床肺部感染评分(CPIS)进行相关性分析。结果:细菌性肺炎患者血清sTREM-1水平为(9.89±6.13)ng/mL,较对照组[(3.37±1.67)ng/mL]显著升高(P=0.001)。根据ROC曲线,sTREM-1取>4.46ng/mL为临界值,其曲线下面积为0.811,诊断细菌性肺炎的灵敏度为70.7%,特异度为76.4%,阳性预测值为75.7%,阴性预测值为71.4%,准确率为73.5%,诊断效能中等。肺炎组中重症肺炎患者血清sTREM-1为(12.65±6.37)ng/mL,较非重症患者[(9.14±5.91)ng/mL]水平增高,差异有统计学意义(P<0.05)。肺炎组患者sTREM-1水平与CPIS评分呈正相关(P<0.05)。结论:测定细菌性肺炎患者血清sTREM-1水平对于细菌性肺炎的诊断有一定价值。重症肺炎患者血清sTREM-1水平升高,且与CPIS评分相关,提示sTREM-1与感染严重程度相关。