Value of interferon-gamma release assay in pulmonary tuberculosis

Li HE; Xiwei ZHAO; Gang CHEN; Xianzhi DU

doi:10.16016/j.1000-5404.201706009

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Value of interferon-gamma release assay in pulmonary tuberculosis

Clinical Medicine | 更新时间：2026-01-09

- Value of interferon-gamma release assay in pulmonary tuberculosis
- Journal of Third Military Medical University Vol. 39, Issue 20, Pages: 2017-2021(2017)
- 作者机构：
  
  1.400010 重庆, 重庆医科大学附属第二医院呼吸内科
  2.400020 重庆, 重庆市人民医院呼吸内科
- 作者简介：
- 基金信息：
  
  the Key Program of Medical Scientific Research of Chongqing Health and Family Planning Commission(2015ZDXM013)
- DOI：10.16016/j.1000-5404.201706009
  CLC： R181.32;R521;R977.6
- Received：01 June 2017，
  
  Revised：2017-07-04，
  
  Published：30 October 2017
- 稿件说明：
移动端阅览
Li HE, Xiwei ZHAO, Gang CHEN, et al. Value of interferon-gamma release assay in pulmonary tuberculosis[J]. Journal of Third Military Medical University, 2017, 39(20): 2017-2021.
DOI：

Li HE, Xiwei ZHAO, Gang CHEN, et al. Value of interferon-gamma release assay in pulmonary tuberculosis[J]. Journal of Third Military Medical University, 2017, 39(20): 2017-2021. DOI： 10.16016/j.1000-5404.201706009.

摘要

目的

探讨γ-干扰素释放试验(interferon-gamma release assay

IGRA)在不同类型肺结核中的应用价值。

方法

收集2015-2016年于我院及重庆市人民医院1 449例住院患者，分析和比较IGRA在肺结核、活动性肺结核、陈旧性肺结核、特殊人群肺结核、其他肺病中的灵敏度。

结果

IGRA对肺结核的灵敏度为84.4%，与其他肺病组比较差异有统计学意义(

0.05)；其对活动性肺结核灵敏度(85.6%)与陈旧性肺结核(79.7%)比较差异无统计学意义(

0.05)；菌阳肺结核、菌阴肺结核的灵敏度分别为85.1%、86.6%，两组比较差异无统计学意义(

0.05)；其中痰涂片阳性但IGRA阴性者25例，菌种鉴定为结核分枝杆菌20例(80%)，非结核分枝杆菌5例(20%)；4例孕妇合并肺结核IGRA均阳性(100%)。

结论

① 单用IGRA不能鉴别陈旧性肺结核与活动性肺结核，应联合其他检测手段；② 若菌阳但IGRA阴性的肺疾病患者要考虑病原菌为非结核分枝杆菌的可能，应进一步行分枝杆菌菌种鉴定；③ 既往无结核病史的特殊人群(如孕妇)IGRA阳性有利于辅助诊断活动性结核病。

Abstract

Objective

To investigate the diagnostic value of interferon-gamma release assay (IGRA) in different types of pulmonary tuberculosis (TB).

Methods

IGRA was performed in 1 449 hospitalized patients in our hospital and the People's Hospital of Chongqing from January 1

2015 to December 31

2016. The sensitivity of IGRA for diagnosis of TB was evaluated

specifically in patients with TB

active TB

old TB

and other pulmonary diseases

as well as TB in special population.

Results

The sensitivity of IGRA in patients with TB (84.4%) was significantly different from the patients with other pulmonary diseases (

0.05); however

no significant difference was seen in the sensitivity between active TB (85.6%) and old TB (79.7%

0.05). In sputum smear-positive and smear-negative TBs

the sensitivity of IGRA was respective 85.1% and 86.6%

which was not statistically different (

0.05). There were 25 cases tested as sputum smear-positive but IGRA-negative. Among them

80% (20 cases) were

Mycobacterium tuberculosis

and 20% (5 cases) were non-tuberculosis mycobacterium. Four cases of pregnant women with TB were all IGRA-positive (100%).

Conclusion

Our results showed that: ① active TB and old TB cannot be differentially diagnosed by IGRA alone

Other examinations should be combined to improve the diagnosis accuracy; ② Patient with sputum smear-positive but IGRA-negative may possibly be infected by non-tuberculosis mycobacterium. Mycobacterium strains should be further identified; ③ In special population such as pregnant women who had no TB history

IGRA-positive result is helpful for the diagnosis of active TB.

关键词

Keywords

references

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