Evaluation of Interferon-Gamma Release Assay Testing and Tuberculin Skin Test for Early Diagnosis of Tuberculosis in Children and Adolescents

Background: This study aimed to evaluate the diagnostic value of interferon-γ release assay (IGRA), a sensitive microbiological diagnostic method, in children and adolescents with suspected tuberculosis in a country with a high burden of tuberculosis. Method: This study included 581 children and adolescents aged 4 - 19 years who were suspected of having tuberculosis, were latently infected with Mycobacterium tuberculosis, and had received at least one dose of BCG vaccine between April 17, 2019, and February 24, 2021. The study evaluated the TST results of 106 patients who had a positive Quantiferon test and were suspected of having tuberculosis. Results: The study included 581 patients aged between 4 and 19 years. Of these, 106 patients tested positive for the Quantiferon test, while 19 were indeterminate and 456 were negative. The Quantiferon test positivity rate was 18.24%. Among the 106 QFT-Plus-positive cases, 23 patients also tested positive for TST. The difference in distribution was found to be statistically significant. Conclusion: The QFT-Plus test is considered an alternative to TST and other microbiological diagnostic methods for early tuberculosis diagnosis, particularly in children and adolescents.

Interferon-gamma release assays in tuberculous uveitis:a comprehensive review

·Tuberculous uveitis(TBU)comprises a broad clinical spectrum of ocular manifestations,making its diagnosis challenging.Ophthalmologists usually require evidence from investigations to confirm or support a clinical diagnosis of TBU.Since direct isolation of the causative organism from ocular specimens has limitations owing to the small volume of the ocular specimens,resultant test positivities are low in yield.Immunodiagnostic tests,including the tuberculin skin test and interferon-gamma release assays(IGRAs),can help support a clinical diagnosis of TBU.Unlike the tuberculin skin test,IGRAs are in vitro tests that require a single visit and are not affected by prior Bacillus Calmette-Guerin vaccination.Currently,available IGRAs consist of different techniques and interpretation methods.Moreover,newer generations have been developed to improve the sensitivity and ability to detect active tuberculosis.This narrative review collates salient practice points as a reference for general ophthalmologists,such as evidence for the utilization of IGRAs in patients with suspected TBU,and summarizes basic knowledge and details of clinical applications of these tests in a clinical setting.

Performance and correlation of interferon gamma release assays and tuberculin skin test in HIV-infected children and adolescents with immune reconstitution

Objective:To evaluate the performance of interferon gamma release assays and tuberculin skin test in HIV-infected children and adolescents with immune reconstitution.Methods:A cross-sectional study was conducted in HIV-infected patients aged 5-18 years receiving antiretroviral treatment with CD4 T-lymphocytes>25%or>500 cells/mm3 for at least 6 months.QuantiF ERON-TB Gold,T-SPOT.TB,and tuberculin skin test were performed in each patient.Results:A total of 50 patients were enrolled with median age of 13.7 years,CD4 counts of 753(IQR:587-989)cells/mm3.Among 27 patients with tuberculosis(16)or tuberculosis exposure(11),8(29.6%)were positive to at least one test,2(7.4%)were positive QuantiFERON-TB Gold,3(11.1%)positive T-SPOT.TB,and 7(25.9%)had tuberculin skin test≥5 mm.Among 23 patients without history of tuberculosis or exposure,all had negative interferon gamma release assays,while 2(8.7%)had positive tuberculin skin test.Conclusions:All tests had low sensitivity despite immune reconstitution.

Diagnostic Value of T-cell Interferon-y Release Assays on Synovial Fluid for Articular Tuberculosis： A Pilot Study

Background： Tuberculosis （TB） remains a major global public health challenge. Articular T/3 is an important form of extrapulmonary tuberculosis, and its diagnosis is difficult because of the low sensitivity of traditional methods. The aim of this study was to analyze the diagnostic value of T-SPOT.TB on synovial fluid for the diagnosis of articular TB. Methods： Patients with suspected articular TB were enrolled consecutively between August 2011 and December 2015. T-SPOT.TB was performed on both synovial fluid mononuclear cells （SFMCs） and peripheral blood mononuclear cells （PBMCs）. The final diagnosis of articular TB was independent of the T-SPOT.TB result. The diagnostic sensitivity, specificity, predictive value, and likelihood ratio of T-SPOT.TB on SFMCs and PBMCs were analyzed. Results： Twenty patients with suspected articular TB were enrolled. Six were diagnosed with articular TB, and 14 patients were diagnosed with other diseases. Sensitivity and specificity were 83% and 86% for T-SPOT.TB on SFMCs, and 67% and 69% for T-SPOT.TB on PBMCs, respectively. The positive predictive value （PPV） and negative predictive value （NPV） of T-SPOT.TB on SFMCs were 71% and 92%, respectively. The PPV and NPV were 50% and 82% for T-SPOT.TB on PBMCs. Conclusion： Sensitivity, specificity, and NPV of T-SPOT.TB on SFMCs appeared higher than that on PBMCs, indicating that T-SPOT. TB on SFMCs might be a rapid and accurate diagnostic test for articular TB.

In vitro antihistamine-releasing activity of a peptide derived from wasp venom of Vespa orientalis

Objective: To investigate the antihistamine-releasing effect of a peptide isolated from wasp venom of Vespa orientalis.Methods: This peptide was separated from crude venom by chromatography methods and mass spectrometry. Then various concentrations(2, 4, 8, 16, 32, 64, 128 and256 mmol/L) of the peptide were incubated with mast cells and lactate dehydrogenase assay was performed.Results: No significant effect was observed in lactate dehydrogenase absorbance under128 mmol/L concentration. This implied that the peptide did not cause cell death in mast cells and consequently, histamine release did not happen. Moreover, the results showed the IC50 of mast cells degranulation at 126 mmol/L, which was approximately high implying that this peptide had high selectivity for normal cells and did not cause histamine release from these cells.Conclusions: This would be a great aim in new drug development, in which an agent acts potentially on its target tissue without activating the immune system.

结核特异性IL-2释放试验在结核感染中的诊断价值探讨

目的基于结核特异性白细胞介素2(IL-2)释放试验的结果,探讨IL-2在辅助诊断活动性结核(ATB)感染中的作用,以及用于监测治疗效果的价值。方法回顾性分析临床进行了结核感染排查的病例599例,其中确诊为活动性结核感染的病例128例,除外活动性结核感染的病例471例。(1)对与阴性对照共同孵育后上清中IL-2(N)检测值制作ROC工作曲线,分析失去抗原刺激后PBMCs持续释放IL-2的能力;(2)对抗原刺激后的响应值IL-2(T-N),制作ROC工作曲线,分析对活动性结核感染的诊断价值;(3)对比分析两组患者IL-2的阳性率;(4)观察响应值IL-2(T-N)阴性和阳性转化时间与疾病进程的依从性。结果IL-2(N)ROC曲线下面积为0.460,95%CI 0.402~0.516;IL-2(T-N)ROC曲线下面积为0.788,95%CI 0.745~0.832;在活动性结核感染组,IL-2(T-N)的阳性率显著高于非活动性结核感染组(χ^(2)=110.858,P<0.001);IL-2发生阴阳性转化的平均时间为3.1个月,时间区间为0.5~7个月。结论PBMCs失去抗原刺激后IL-2仅低水平分泌,对诊断ATB没有价值;结核分枝杆菌特异性抗原刺激后的响应值IL-2(T-N),用于诊断ATB具有一定准确性;IL-2(T-N)阴阳性转化的时间较短,在监测治疗效果方面存在一定价值,监测时间间隔建议为3个月。

中国肾移植受者结核病临床诊疗指南(2023版)

本指南旨在为肾移植受者结核病的临床管理提供全面而实用的指导。首先,概述了肾移植受者结核病的特殊性,强调了其高发生率及临床表现的多样性。为了更好地理解患者的病情,建议在移植前进行结核病相关的评估,并注意移植术后对结核病的监测。在诊断方面,详细介绍了目前常用的结核病诊断方法,并提供了在肾移植受者中的适用性评估。在确诊后,讨论了在免疫抑制药应用的背景下,如何平衡结核病治疗和排斥反应的策略,并关注了潜在的药物相互作用。预防方面,强调了在肾移植前对结核病的筛查。本指南旨在提高医务人员对肾移植受者结核病管理的认知,促进更有效的临床实践,提高受者的生活质量。

Interferon-Gamma Release Assay is Not Appropriate for the Diagnosis of Active Tuberculosis in High-Burden Tuberculosis Settings： A Retrospective Multicenter Investigation

Background：Interferon-gamma release assay （IGRA） has been used in latent tuberculosis （TB） infection and TB diagnosis,but the results from different high TB-endemic countries are different.The aim of this study was to investigate the value of IGRA in the diagnosis of active pulmonary TB （PTB） in China.Methods：We conducted a large-scale retrospective multicenter investigation to further evaluate the role of IGRA in the diagnosis of active PTB in high TB-epidemic populations and the factors affecting the performance of the assay.All patients who underwent valid T-SPOT.TB assays from December 2012 to November 2015 in six large-scale specialized TB hospitals in China and met the study criteria were retrospectively evaluated.Patients were divided into three groups：Group 1,sputum culture-positive PTB patients,confirmed by positive Mycobacterium tuberculosis sputum culture;Group 2,sputum culture-negative PTB patients;and Group 3,non-TB respiratory diseases.The medical records of all patients were collected.Chi-square tests and Fisher＇s exact test were used to compare categorical data.Multivariable logistic analyses were performed to evaluate the relationship between the results of T-SPOT in TB patients and other factors.Results：A total of 3082 patients for whom complete information was available were included in the investigation,including 905 sputum culture-positive PTB cases,914 sputum cultmre-negative PTB cases,and 1263 non-TB respiratory disease cases.The positive rate of T-SPOT.TB was 93.3% in the culture-positive PTB group and 86.1% in the culture-negative PTB group.In the non-PTB group,the positive rate of T-SPOT.TB was 43.6%.The positive rate of T-SPOT.TB in the culture-positive PTB group was significantly higher than that in the culture-negative PTB group （x2 =25.118,P 〈 0.01）,which in turn was significantly higher than that in the non-TB group （x2 =566.l 16,P 〈 0.01）.The overall results were as follows：sensitivity,89.7%;specificity,56.37%;positive predictive value,74.75%;negative predictive value,79.11%;and accuracy,76.02%.Conclusions：High false-positive rates of T-SPOT.TB assays in the non-TB group limit the usefulness as a single test to diagnose active TB in China.We highly recommend that IGRAs not be used for the diagnosis of active TB in high-burden TB settings.

Revisiting tuberculosis as a cause of gastric outlet obstruction:Insights from a case report

Gastroduodenal tuberculosis(GD-TB)is exceptionally rare.The clinical manifestations of gastrointestinal TB are diverse and non-specific,which makes diagnosis difficult,leading to delayed diagnosis and high mortality.As a peer-reviewer of World Journal of Clinical Cases,I would like to share my opinion on the article published by this journal.The patient had no family history of TB or contact with people with TB.Primary GD-TB presenting as gastric outlet obstruction and normal findings of thoracic computed tomography increased the difficulty of diagnosis and treatment in this patient.The diagnosis and treatment scheme of this typical case have reference value for the clinical treatment of GD-TB.

Tuberculosis in kidney transplant candidates and recipients

Tuberculosis(TB)is the leading cause of infectious mortality and morbidity in the world,second only to coronavirus disease 2019.Patients with chronic kidney disease and kidney transplant recipients are at a higher risk of developing TB than the general population.Active TB is difficult to diagnose in this population due to close mimics.All transplant candidates should be screened for latent TB infection and given TB prophylaxis.Patients who develop active TB pre-or post-trans-plantation should receive multidrug combination therapy of antitubercular therapy for the recommended duration with optimal dose modification as per glomerular filtration rate.

结核病γ干扰素释放试验刺激抗原研究进展

结核分支杆菌复合群引起的人和动物结核病,对人类健康及畜牧业发展造成了严重的威胁,早期诊断对于结核病的防控至关重要。在结核病众多诊断方法中,免疫学诊断方法中γ干扰素释放试验具有很好的应用前景。γ干扰素释放试验刺激抗原以结核菌素(purified protein derivative,PPD)为主,然而PPD抗原成分复杂,诊断特异性和敏感性有待提高,因此寻找可以代替PPD的特异性刺激抗原成为了研究热点。论文系统综述了近年来报道用于γ干扰素释放试验的刺激抗原,重点概述了刺激抗原的免疫特性、刺激效果以及各类刺激抗原的优势、局限性和应用前景,以期为人和动物结核病的诊断及防控提供参考。

3种检测方法对结核病诊断效能的比较

目的评价γ-干扰素释放试验(IGRA)、涂片抗酸染色镜检(AFB)和实时荧光定量核酸扩增检测技术(Xpert MTB/RIF)诊断结核病的应用价值。方法选取2019年6月至2023年6月在陕西省结核病防治研究所就诊的疑似结核病患者397例作为研究对象,所有研究对象均同时行IGRA、AFB、Xpert MTB/RIF检测,收集患者的检测结果和病例资料。排除无法诊断是否为结核病的患者39例,最终纳入358例,并根据临床诊断结果将其分为结核患者141例和非结核患者217例。比较IGRA、AFB、Xpert MTB/RIF在结核病中的阳性检出情况及其对结核病的诊断效能。结果IGRA、AFB、Xpert MTB/RIF检测结核病的灵敏度分别为95.74%、31.21%、56.74%,IGRA的灵敏度高于AFB和Xpert MTB/RIF(χ^(2)=126.66,P<0.01;χ^(2)=59.22,P<0.01),Xpert MTB/RIF的灵敏度高于AFB(χ^(2)=18.65,P<0.01);IGRA、AFB、Xpert MTB/RIF检测结核病的特异度分别为60.37%、99.54%、100.00%,其中AFB和Xpert MTB/RIF的特异度均高于IGRA(χ^(2)=103.86,P<0.01;χ^(2)=107.25,P<0.01),而AFB和Xpert MTB/RIF的特异度比较,差异无统计学意义(χ^(2)=1.00,P=0.32)。IGRA、AFB、Xpert MTB/RIF检测结核病的准确率分别为74.30%、72.63%、82.96%,其中Xpert MTB/RIF的准确率最高,且3种检测方法的准确率比较,差异有统计学意义(χ^(2)=12.30,P<0.01)。IGRA与AFP检测结果的总符合率为31.21%(44/141),阳性符合率为95.45%(42/44),阴性符合率为4.12%(4/97);Xpert MTB/RIF与AFP检测结果的总符合率为74.47(105/141),阳性符合率为100.00%(44/44),阴性符合率为62.89%(61/91)。结论在结核病诊断中,Xpert MTB/RIF和AFB的特异度高于IGRA,而IGRA和Xpert MTB/RIF的灵敏度高于AFB,临床可根据3种方法各自的优势应用于结核病的诊断,以此来提高结核病的临床诊治效率。

干扰素体外释放酶联免疫检验在结核病临床诊断中的应用

目的探讨干扰素体外释放酶联免疫检验(IGRA)在结核病临床诊断中的应用价值。方法选择2022年9月—2023年9月在菏泽市传染病医院经初步检查怀疑为结核病的530例患者作为研究对象,对所有患者实施IGRA和结核菌素皮肤试验,以结核杆菌DNA检测结果作为诊断的“金标准”,比较应用IGRA与结核菌素皮肤试验诊断结核病所得诊断结果,分析两种方法诊断结核病的结果与结核杆菌DNA检测结果的一致性。结果在530例疑似结核病患者中,经结核杆菌DNA检测共412例患者确诊结核病(包括肺结核329例,肺外结核83例),检出率为77.74%。IGRA诊断结核病的敏感度、特异度、阳性预测值、阴性预测值、准确度均显著高于结核菌素皮肤试验(敏感度:98.30%比95.15%;特异度:97.46%比88.98%;阳性预测值:99.26%比96.79%;阴性预测值:94.26%比84.00%;准确度:98.11%比93.77%;均P<0.05)。IGRA和结核菌素皮肤试验诊断结核病的结果与结核杆菌DNA检测结果的一致性分析表明,IGRA与结核杆菌DNA检测结果高度一致(κ值为0.894),结核菌素皮肤试验与结核杆菌DNA检测结果中度一致(κ值为0.657)。结论在对结核病进行诊断时,应用IGRA进行检测具有较高的诊断价值,可实现对结核病的灵敏和准确诊断。

TB-IGRA与TST检测菌培阳性肺结核患者比较

目的比较结核分枝杆菌γ-干扰素体外释放试验(TB-IGRA)与结核菌素皮肤试验(TST)在临床上用于检测MTB感染者的应用价值。方法 TB-IGRA与TST平行检测对147例菌培阳性肺结核患者,并分析年龄、性别和是否接种卡介苗对各自检测性能的影响。TST分别比较红肿硬块直径≥5mm(TST5)和≥15mm(TST15)者。结果 TB-IGRA和TST5的检出率分别为80.3%(118/147)和78.2%(115/147),均显著高于TST15的44.2%(65/147)。TB-IGRA在60岁以下年龄组的检出率显著高于60岁以上年龄组,TST15检出率随年龄变化趋势与TB-IGRA类似。是否接种卡介苗对TB-IGRA和TST15没有明显影响,而TST5在接种过卡介苗的患者中的阳性率显著高于未接种组。结论 TB-IGRA比TST有更高的检测灵敏度,可以作为判断结核分枝杆菌感染的手段之一。

CTL体外杀伤效应的特异性和敏感性影响因素的研究

目的 观察影响CTL体外杀伤效应的特异性和敏感性的主要因素。方法 抗原OVA免疫小鼠C5 7BL 6 ,取免疫后小鼠脾细胞 ,先用ELISPOT法检测CTL的活化 ,然后抗原肽OVA2 57- 2 6 4体外刺激免疫后的脾细胞 5d ,51 Cr释放法观察不同因素对CTL的体外杀伤效果的影响。结果 ELISPOT检测结果显示抗原免疫组产生了强CTL应答 ,而PBS免疫组没有应答。游离多肽的存在显著降低杀伤的效率 ,IL 2和Ficoll Hypaque离心去除死细胞可提高体外杀伤的效率。ConA的存在可以使CTL体外非特异的杀伤靶细胞。结论 CTL体外杀伤实验中必需尽量去除游离多肽 。

干扰素释放试验在AIDS合并结核感染患者中的诊断价值

目的评价4种诊断方法对人获得性免疫缺陷综合征(AIDS)合并结核病(TB)患者的诊断价值。方法将52例人类免疫缺陷病毒(HIV)感染合并TB患者作为观察组,100例未感染HIV的TB患者为对照组,对两组患者进行结核菌素(PPD)试验、痰结核菌培养、结核抗体和γ干扰素释放试验(IGRA)进行诊断。结果对照组患者PPD试验、痰结核菌培养和结核抗体阳性率明显高于观察组患者,差异有统计学意义(P<0.01);而IGRA阳性率两组比较,差异无统计学意义(P>0.05);观察组IGRA阳性明显高于PPD试验、痰结核菌培养和结核抗体阳性率,均差异有统计学意义(P<0.01)。抗逆转录病毒治疗观察组患者IGRA阴性发生率明显高于阳性率,差异有统计学意义(P<0.05)。结论 IGRA是诊断HIV感染合并TB的敏感方法,而抗逆转录病毒治疗可能对结果有一定的影响。

γ-干扰素释放试验对儿童结核性脑膜炎的诊断价值

目的探讨γ-干扰素释放试验(IGRAs)对儿童结核性脑膜炎的诊断价值。方法采用前瞻性病例对照研究方法,比较2012年6月至2013年12月住院的32例结核性脑膜炎患儿(TBM组)和30例非结核性颅内感染患儿(非TBM组)的IGRAs、结核菌素皮肤试验(TST)、结核杆菌抗体(TB-Ig G)及脑脊液结核分枝杆菌DNA(TB-DNA)阳性率的差异,以及各指标的灵敏度、特异度、阳性预测值和阴性预测值。结果 IGRAs、TST、TB-Ig G、脑脊液TB-DNA,在TBM组的阳性率分别为87.50%、56.25%、46.88%、34.38%,非TBM组为6.67%、23.33%、20%、0%,差异均有统计学意义(P<0.05)。IGRAs、TST、TB-Ig G、TB-DNA的灵敏度分别为87.5%、56.25%、46.88%、34.38%,特异度分别为93.33%、76.67%、80.00%、100%,各指标灵敏度和特异度的差异均有统计学意义(P<0.05);IGRAs的灵敏度高于其他三项指标,差异均具有统计学意义(P<0.017)。IGRAs、TST、TB-Ig G、TB-DNA的阳性预测值分别93.33%、72%、71.43%、100%,阴性预测值分别为87.50%、62.16%、58.54%、58.82%。结论 IGRAs、TST、TB-Ig G、TB-DNA对结核性脑膜炎都具有诊断价值,IGRAs的灵敏度和特异度相对较高。

结核γ干扰素释放试验酶联免疫试管法和结核菌素皮试试验对行维持性血液透析合并结核患者的诊断和预后判断价值研究

目的探讨结核γ干扰素释放试验酶联免疫试管法(QFT)和结核菌素皮试试验(TST)对结核高流行地区(海南地区)行维持性血液透析(MHD)合并结核[包括隐性结核(LTBI)和结核病]患者的诊断、预后判断价值。方法选择2013—2015年在海南省人民医院血液净化中心行MHD时间>3个月的患者198例,收集患者的一般资料,进行QFT和TST,评估其对MHD合并结核的诊断和预后判断价值。采用多因素Logistic回归分析分析QFT阳性和TST阳性的影响因素。观察患者3年的预后情况,绘制生存曲线,采用Cox比例风险模型分析其预后影响因素。结果最终156例患者完成研究,其中男109例、女47例,平均年龄(54.4±16.6)岁,平均透析龄(1.9±0.4)年。MHD患者QFT阳性率为34.6%(54/156),TST阳性率为67.9%(106/156),TST与QFT结果无一致性(Kappa值=0.053,P=0.405)。多因素Logistic回归分析显示,在校正其他因素的情况下,性别[OR=0.345,95%CI(0.144,0.828),P=0.017]、有无卡介苗接种瘢痕[OR=0.345,95%CI(0.144,0.828),P=0.017]是QFT阳性的影响因素;性别[OR=2.836,95%CI(1.120,7.177),P=0.028]、淋巴细胞分数[OR=3.573,95%CI(1.410,12.295),P=0.043]是TST阳性的影响因素。37例LTBI患者中11例转为肺结核(29.7%)。本组患者3年结核患病率为42 948.7/10万。MHD患者1、2、3年生存率分别为89.7%、77.6%、69.9%,粗死亡率(CDR)为301.3/1 000人。Cox比例风险模型分析发现QFT阳性、C反应蛋白升高是生存的不利因素;抗结核治疗、前清蛋白升高是生存的有利因素(P<0.05)。结论在海南地区,男性MHD患者QFT阳性率较高;TST与QFT对MHD合并结核的诊断无一致性。QFT阳性、C反应蛋白升高是生存的不利因素,抗结核治疗、前清蛋白升高是生存的有利因素。在结核高流行地区MHD患者合并LTBI、结核病的诊断依然需要结合流行病学、病史、结核易感因素、肺部影像学,排除其他感染,行试验性抗结核治疗,需大力推进组织病理、肺支气管肺泡灌洗液的诊断措施。

干扰素-γ释放试验在儿童结核感染中的应用价值

目的评价干扰素-γ(IFN-γ)释放试验(IGRA)对儿童结核感染的诊断价值。方法采用以结核分枝杆菌特异性抗原——早期分泌抗原靶6(ESAT-6)和培养滤液蛋白10(CFP-10)为基础,基于酶联免疫斑点法(ELISPOT)的IGRA(即T-SPOT)检测了2 200例非结核病患儿和34例活动性结核病患儿体内特异性T淋巴细胞分泌的IFN-γ水平,评价其在儿童活动性结核病和结核分枝杆菌潜伏感染中的敏感性和特异性,同时分析了该实验的各项影响因素。结果 T-SPOT诊断活动性结核病的敏感性为73.5%、特异性为99.0%。T-SPOT检测结果与性别、年龄、卡介苗接种史、结核病接触史、机体免疫状态和感染部位无关。结论 T-SPOT敏感性较高,特异性强,有助于儿童活动性结核病的早期快速诊断。

γ-干扰素释放试验对活动性肺结核的辅助诊断价值

目的探讨结核分枝杆菌感染T细胞斑点试验(T-SPOT.TB)在活动性肺结核中的诊断价值。方法应用T-SPOT.TB试剂盒对153例活动性肺结核(A组)和81例其他肺部疾病(B组)患者的外周血中MTB特异性T淋巴细胞进行检测,同时对两组患者进行LAM、16KD、38KD抗体的检测。结果 T-SPOT.TB对活动性肺结核的敏感性为78.4%(120/153),要明显高于对照组24.7%(20/81)(χ~2=80.91,P<0.001)。T-SPOT.TB检测的敏感性要明显高于16KD抗体10.5%(χ~2=52.26,P<0.001)、也要高于38KD抗体(54.9%)、LAM抗体(58.8%),但其差异无统计学意义(χ~2=0.62、χ~2=0.50,P值均>0.05)。T-SPOT.TB检测的特异性为75.3%(61/81),要低于16KD抗体84.0%(68/81)(χ~2=5.59,P<0.05);也要低于38KD抗体80.2%(65/81)和LAM抗体81.5%(65/81),但差异无统计学意义(χ~2=0.45、χ~2=0.50,P值均>0.05)。菌阳患者的ESAT-6、CFP-10的SFC分别为47.10±34.53和63.02±35.92,要明显高于菌阴肺结核(P<0.05、P<0.01)。重症患者的ESAT-6、CFP-10的SFC分别为60.84±31.76和74.75±33.75,明显高于轻症患者(P<0.001)。通过受试者工作特征曲线(ROC曲线),当EAST-6的SFC取值21.5时最具诊断价值,其灵敏度为74.8%,特异度为94.5%;CFP-10取值19.5时最具诊断价值,灵敏度为77.6%,特异度为91.8%。结论 TSPOT.TB对活动性肺结核的诊断有一定的价值,和其他血清学结核抗体检测相比有一定的优势,但并不十分突出。两种抗原的SFC值与疾病的轻重程度相关,SFC的具体数值有一定的临床价值和意义。