TB-SA抗体检测对结核病临床诊断价值的研究

目的对TB-SA(Tuberculosis-Specific Antigen)抗体检测用于结核病诊断的价值进行评估。方法2004年5—11月在山东省胸科医院住院的活动性结核病患者230例(菌阳肺结核60例,菌阴肺结核131例,肺外结核39例),非结核呼吸系统疾患者96例,无结核疾患的在校大学生健康志愿者41人,入选病例留取的痰、胸腔积液、腹腔积液、脑脊液标本同时进行抗酸杆菌浓缩集菌,结核杆菌培养,血清样本进行TB-SA抗体检测。结果活动性结核病人血清学检测TB-SA抗体总的敏感性为67.8%。活动性肺结核敏感性为67.6%,肺外结核敏感性为59.0%(P>0.05);诊断结核病总的特异性为76.6%,在非结核呼吸系统疾患中为72.9%,在健康人群中为85.4%。结论TB-SA抗体检测是一种快速、简单、有较好敏感性和特异性的结核病辅助诊断手段,对菌阴肺结核及不易取得细菌学检查标本的肺外结核病、儿童结核病有较高的参考价值。     

TB-SA抗体检测对结核病临床诊断价值的研究

目的　对TB-SA(Tuberculosis-Specific Antigen)抗体检测用于结核病诊断的价值进行评估。方法 2004年5—11月在山东省胸科医院住院的活动性结核病患者230例(菌阳肺结核60例,菌阴肺结核131例,肺外结核39例),非结核呼吸系统疾患者96例,无结核疾患的在校大学生健康志愿者41人,入选病例留取的痰、胸腔积液、腹腔积液、脑脊液标本同时进行抗酸杆菌浓缩集菌,结核杆菌培养,血清样本进行TB-SA抗体检测。结果 活动性结核病人血清学检测TB-SA抗体总的敏感性为67.8%。活动性肺结核敏感性为67.6%,肺外结核敏感性为59.0%(P>0.05);诊断结核病总的特异性为76.6%,在非结核呼吸系统疾患中为72.9%,在健康人群中为85.4%。结论 TB-SA抗体检测是一种快速、简单、有较好敏感性和特异性的结核病辅助诊断手段,对菌阴肺结核及不易取得细菌学检查标本的肺外结核病、儿童结核病有较高的参考价值。     

GeneXpert MTB/RIF技术与血清结核分枝杆菌特异性蛋白抗体联合检测在菌阴肺结核诊断中的价值

目的 探讨GeneXpertmTB/RIF技术和血清结核分枝杆菌特异性蛋白(tuberculosis specific antigen,TB-SA)抗体联合检测在菌阴肺结核诊断中的价值.方法 搜集2014年6月至2016年2月期间山东省滨州市结核病防治院临床确诊的住院菌阴肺结核患者119例和菌阳肺结核患者47例作为试验组,同期确诊的住院非结核病患者71例和健康者55人作为对照组.每组均留取晨痰和血液一份,晨痰进行GeneXpertmTB/RIF检测结核分枝杆菌,血液进行血清TB-SA抗体检测.结果 119例菌阴肺结核患者,GeneXpertmTB/RIF、血清TB-SA抗体检测和2种方法联合检测的敏感度分别为37.8%、68.1%和81.2%,特异度分别为100%、74.6%和74.6%.2种方法联合检测结果与GeneXpertmTB/RIF和血清TB-SA抗体检测结果比较,差异均有统计学意义(χ2=47.21、5.71,均P<0.01),GeneXpertmTB/RIF和血清TB-SA抗体检测结果比较,差异有统计学意义(χ2=21.86,P<0.01).结论 GeneXpertmTB/RIF和血清TB-SA抗体联合检测敏感度提高,对菌阴肺结核的诊断有较大价值.     

结核分枝杆菌特异性蛋白抗体检测在肺外结核病诊断中的价值

目的研究结核分枝杆菌特异性蛋白(TB-SA)抗体检测在肺外结核病诊断中的价值。方法对71例肺外结核病患者和40例健康志愿者进行血清结核分枝杆菌特异蛋白抗体检测,并对各种肺外结核病引流物标本进行AFB涂片和培养检查。结果结核分枝杆菌TB-SA抗体检测诊断菌阳肺外结核病敏感度为87.5%(7/8),诊断菌阴肺外结核的敏感度为63.5%(40/63),诊断肺外结核总体敏感度为66.2%(47/71),特异度为97.5%(39/40)。结论结核分枝杆菌TB-SA抗体检测诊断肺外结核病有较好的敏感性和特异性,是辅助诊断和鉴别诊断肺外结核病较为理想的免疫学方法之一。     

结核分枝杆菌特异性蛋白抗体检测在结核病诊断中的价值

目的研究结核分枝杆菌特异性蛋白（TB-SA）抗体检测在结核病诊断中的价值。方法对829例结核病患者（男471例，女358例）、278例非结核性肺部疾病患者（男172例，女106例）和125例健康志愿者（男51例，女74例）同时进行结核菌素纯蛋白衍生物（PPD）试验，结核分枝杆菌TB-SA抗体检测，并对全部肺结核和非结核性肺部疾病患者进行痰抗酸杆菌涂片和培养。采用EPl2000统计软件进行统计学分析，组间比较采用t检验，计数资料采用X^2检验。结果结核分枝杆菌TB-SA抗体检测诊断菌阳肺结核的敏感度为75．1％（272／362）；诊断菌阴肺结核的敏感度为68．9％（226／328）；诊断肺外结核病的敏感度为71，2％（99／139）；诊断结核病的总体敏感度为72．0％（597／829），特异度为82．1％（331／403）。TB-SA血清抗体检测值并不与PPD值呈线性关系，即结核分枝杆菌TB-SA抗体检测诊断结核病不受卡介苗接种反应的影响。结论结核分枝杆菌TB-SA抗体检测诊断结核病有较好的敏感度和特异度，是辅助诊断和鉴别诊断结核病的有效手段。     

γ-干扰素体外释放试验在结核诊断中的应用评价

目的探寻γ-干扰素体外释放试验在结核诊断中的应用价值方法 34例菌阳肺结核患者,238例菌阴肺核患者,33例非结核患者,30例健康体检者,分别进行血清结核杆菌抗体检测、结核菌素试验(TST)以及结核分枝杆菌相关γ-干扰素体外释放酶联免疫试验(TB-IGRA),对其检测结果进行统计分析。结果TB-IGRA、血清结核杆菌抗体试验以及TST的诊断敏感性分别为87.13%、76.10%和64.71%;诊断特异性分别为90.48%、66.67%和71.43%;阳性预测值分别为97.53%、90.79%和90.72%;阴性预测值分别为61.96%、39.25%和31.91%;诊断效率分别为87.77%、74.33%和65.97%。TB-IGRA的诊断敏感性和诊断特异性均显著高于血清结核杆菌抗体试验以及TST(P0.01)。结论 TB-IGRA对结核的诊断具有较高敏感性和特异性,对于菌阴肺结核的辅助诊断和疑似结核感染患者的排除优于其它两种方法。     

TB-SA基因检测在结核病诊断的临床应用研究

目的　研究结核分枝杆菌特异性基因(Tuberculosis-Specific AntigenTB-SA)在结核病诊断中的应用价值。方法 选择2004年4—9月期间在成都市结核病防治院的住院结核病患者371例。其中肺结核307例;肺外结核64例(结核性胸膜炎47例、结核性腹膜炎7例、结核性脑膜炎10例);非结核病的呼吸系统疾病患者61例(肺炎4例、肺癌9例,急性支气管炎7例、慢性支气管炎14例、哮喘10例,COPD12例、肺间质纤维化1例、支气管扩张3例、矽肺1例);同时选择无结核疾患健康志愿者40例,全部选例均知情同意。入选肺结核病例和健康选择痰液、肺外结核病例选择胸腔积液、腹腔积液、脑脊液等标本进行抗酸杆菌浓缩集菌,结核杆菌培养和TB-SA基因扩增(PCR)。结果 307例肺结核患者中PCR检测TB-SA阳性259例,敏感性为84.4%(259/307);细菌学培养阳性193例,敏感性62.9%(193/307);痰浓缩集菌镜检阳性95例,敏感性30.9%(95/307)。64例肺外结核患者中,TB-SA阳性35例;敏感性54.7%(35/64);核杆菌培养阳性5例,敏感性7.8%(5/64)。61例非结核呼吸系统病患者中,TB-SA阳性2例,特异性96.7%(59/61)痰涂片无阳性病例。40例健康志愿者,TB-SA及痰涂片均无阳性出现,特异性达100%(40/40)。结论 TB-SA基因检测的特异性及敏感性都取得了满意的效果。操作也较为简单。     

结核分枝杆菌特异性蛋白（TB-SA）抗体检测试剂在结核病诊断中的应用研究

目的 评价结核分枝杆菌特异性蛋白(tuberculosis specific antigen, TB-SA)抗体检测试剂在结核病中的应用价值。 方法 以天津市和平区结核病控制中心、山东省烟台芝罘区肺科医院和河南省南阳市卧龙区结核病防治中心为研究现场,连续纳入2012年4月至10月门诊就诊的所有肺结核疑似患者944例,同时纳入110名健康志愿者作为对照。对所有纳入患者及健康志愿者进行痰涂片、培养、结核菌素试验（PPD）和胸部X线检查,签署知情同意书后留取血清进行TB-SA抗体检测。痰涂片采用萋-尼（Ziehl-Neelsen）染色法,培养采用接种酸性罗氏固体培养基培养。现场数据由双人录入,在国家结核病参比实验室统一整理分析。 结果755例确诊的活动性结核病患者,TB-SA抗体检测法阳性率为74.8% (565/755,95%CI＝71.7%～77.9%),远高于涂片阳性率25.6%（193/755）(χ²=366.59,P<0.0001) 和培养阳性率39.6%（299/755）(χ²=190.12,P<0.0001)。在培养阳性结核病患者中,TB-SA抗体检查敏感度为88.5% (255/288,95%CI＝84.8%～92.2%)。在菌阴活动性结核病患者中,TB-SA抗体检查敏感度为68.0% (310/456,95%CI＝63.7%～72.3%)。TB-SA抗体检测法在活动性结核病患者中的阳性预测值为92.3% (565/612,95%CI＝90.2%～94.4%),在健康人群中检测特异度为97.3% (95%CI＝94.3%～100.3%)。 结论TB-SA抗体检测法在结核病患者中阳性检出率显著高于涂片和培养,适用于结核病,特别是菌阴结核病的诊断;TB-SA抗体检测法诊断结核病的特异度高,可用于人群健康体检。     

结核分枝杆菌TB—SA抗体检测在结核病诊断中价值的研究

目的研究结核分枝杆菌TB—SA抗体检测在结核病诊断中的价值。方法对1232例结核病、非结核病的其他呼吸系统疾患患者及健康志愿者同日寸进行抗酸杆菌涂片、培养、PPD皮试及结核分枝杆菌TB—SA抗体检测。结果①结核分枝杆菌TB—SA抗体检测菌阳肺结核的敏感性为75．1％；菌阴肺结核的敏感性为68．9％；肺外结核病的敏感性为71．2％；诊断结核病的总体敏感性为72．0％，特异性为82．1％。②TB—SA血清抗体检测OD405值并不与PPD值成线性关系，结核分枝杆菌TB—SA抗体检测对结核病人的诊断不受患者卡介苗反应的影响。结论结核分枝杆菌TB—SA抗体检测诊断结核病有较好的敏感性和特异性，是结核病诊断和鉴别诊断的可靠手段。     

荧光双标记定量结核杆菌在肺结核诊断中的应用价值

目的　对痰荧光双标记定量结核杆菌检测法用于肺结核诊断的价值进行评估。方法　 135例肺结核患者和 6 0例非肺结核患者的痰液用荧光染色涂片、改良罗氏培养和荧光双标记定量结核杆菌法检测 ,同时测定血结核抗体。结果　菌阳、菌阴肺结核组荧光双标记法的敏感性分别为 83% ,5 3% ,特异性为 10 0 % ;血结核抗体的敏感性分别为 6 3% ,5 3% ,特异性为 95 %。结论　荧光双标记法诊断肺结核的特异性高 ,适合于临床应用 ,而敏感性有待进一步提高。     

TB-SA antibody test for diagnosis and monitoring treatment outcome of sputum smear negative pulmonary tuberculosis patients

The objectives of this study were to evaluate the suitability of the TB-SA antibody test to diagnose tuberculosis in sputum smear negative (SS-) pulmonary tuberculosis (TB) patients and its applicability for monitoring treatment outcomes in these patients. This study was conducted in three counties/districts in Chongqing Municipality, Liaoning Province, China between June 2005 and June 2007. A total of 432 SS suspected pulmonary TB patients were recruited and their blood was collected prior to treatment, at the end of 1 month of treatment, 2 months of treatment and 6 months of treatment (E6MT). The serum samples were analyzed with a TB-SA antibody test kit. Of the 432 SS suspected pulmonary TB patients, serum samples were obtained at all time points in 316 patients and analyzed. The 316 patients were divided into three groups according to sputum smear and sputum culture results and the chest X-ray results before treatment and at E6MT. Ten point four percent were SS-/culture positive (C+), 73.1% were SS-/culture negative (C-) with X-rays abnormalities, and 16.5% were SS-/C- without X-rays abnormalities. The positive rates for TB-SA antibody in the three groups were 57.6, 44.6 and 44.2%, respectively, before treatment, and 18.2, 19.1 and 26.9%, respectively, at E6MT. There was a significant decrease in TB-SA antibody positivity with treatment for all 3 groups. The TB-SA antibody test may be a useful adjunct to diagnose tuberculosis in SS- pulmonary TB patients, and may be useful for monitoring treatment outcomes of SS- pulmonary TB patients.     

Diagnostic role of fiberoptic bronchoscopy for mycobacterial diseases--serological diagnosis]

Detection of IgG antibodies against purified cord factor (trehalose-6, 6'-dimycolate) prepared from Mycobacterium tuberculosis H37Rv was carried out by the method of enzyme-linked immunosorbent assay (ELISA) and its diagnostic usefulness was also evaluated in this study. Sera from 65 patients with active pulmonary tuberculosis, 58 patients with inactive pulmonary tuberculosis, 36 patients with diseases other than tuberculosis and 66 healthy adults were examined. Patients with active pulmonary tuberculosis showed significantly higher titers of IgG antibodies against cord factor than other groups (p < 0.001). Patients with inactive pulmonary tuberculosis also showed significantly higher titers of IgG antibodies against cord factor than patients with diseases other than tuberculosis and healthy adults (p < 0.001). An antibody titers of greater than 0.29 were established as a positive ELISA test. For patients with active pulmonary tuberculosis, the ELISA had a sensitivity of 85% and a specificity of 96%. From these results, it is concluded that the detection of IgG antibodies against cord factor is useful for the serodiagnosis of active or inactive pulmonary tuberculosis.     

γ干扰素诱导蛋白10和巨噬细胞炎症蛋白1α在判断肺结核活动性中的临床意义

目的 探讨趋化因子γ干扰素诱导蛋白10(IP-10)和巨噬细胞炎症蛋白1α(MIP-1α)在判断肺结核活动性中的临床意义.方法 回颐性分析活动性和非活动性肺结核患者各60例及40例正常健康人外周血清中IP-10和MIP-1α的水平.根据活动性及非活动性肺结核组IP-10和MIP-1α的检测值制作受试者工作特征(ROC)...     

Clinical evaluation of a rapid immunochromatographic assay based on the 38 kda antigen of Mycobacterium tuberculosis on patients with pulmonary tuberculosis in China

Setting: A rapid membrane-based antibody assay capable of diagnosing pulmonary tuberculosis within 15 min has been developed using the 38 kDa antigen from Mycobacterium tuberculosis.Objective: To determine the specificity and sensitivity of this assay and evaluate its usefulness in a clinical setting.Design: Sera from patients with active pulmonary tuberculosis were obtained from three hospitals in China. The control groups consisted of patients who were diagnosed with lung diseases other than tuberculosis and healthy subjects.Results: Antibody was detected in 54 of 61 (89%) sputum positive patients and 67 of 91 (74%) sputum negative patients who had been clinically diagnosed as having active pulmonary tuberculosis. Five out of 56 (9%) patients with respiratory diseases other than tuberculosis and 1 out of 30 (3%) healthy controls had a positive antibody response. The overall specificity of the assay was 93% and the positive predictive value was 95%. We conclude that this assay is rapid, sensitive and specific and will be a valuable aid in the clinical diagnosis of pulmonary tuberculosis.