检验医学 ›› 2025, Vol. 40 ›› Issue (10): 978-981.DOI: 10.3969/j.issn.1673-8640.2025.10.008

• 论著 • 上一篇    下一篇

MTB特异性IFN-γ和IL-2联合检测在肾结核辅助诊断和尿路感染鉴别诊断中的价值

孙倩倩, 肖华, 杨越, 马浩琳, 李灵招(), 吕朋举()   

  1. 郑州市中心医院检验科河南 郑州 450000
  • 收稿日期:2024-08-08 修回日期:2025-04-14 出版日期:2025-10-30 发布日期:2025-11-07
  • 通讯作者: 吕朋举,E-mail:983904257@qq.com;李灵招,E-mail:lilingzhaoabc@163.com
  • 作者简介:孙倩倩,女,1988年生,学士,主管技师,主要从事临床检验工作。
  • 基金资助:
    河南省高等学校重点科研项目(24B320021)

Role of combined determination of MTB-specific IFN-γ and IL-2 in auxiliary diagnosis of renal tuberculosis and differential diagnosis from urinary tract infection

SUN Qianqian, XIAO Hua, YANG Yue, MA Haolin, LI Lingzhao(), LÜ Pengju()   

  1. Department of Clinical LaboratoryZhengzhou Central HospitalZhengzhou 450000,Henan, China
  • Received:2024-08-08 Revised:2025-04-14 Online:2025-10-30 Published:2025-11-07

摘要:

目的 探讨结核分枝杆菌(MTB)特异性γ-干扰素(IFN-γ)和白细胞介素(IL)-2联合检测在肾结核辅助诊断及与尿路感染鉴别诊断的价值。方法 选取2023年6月—2024年5月郑州市中心医院临床诊断或实验室确诊肾结核患者59例(肾结核组)、尿路感染患者63例(对照组)。收集所有患者清洁中段尿样本,进行MTB培养、GeneXpert MTB/RIF检测。采集所有患者静脉血样本,进行MTB特异性IFN-γ和IL-2检测。采用受试者工作特征(ROC)曲线评价IFN-γ+IL-2联合检测、MTB培养和GeneXpert MTB/RIF鉴别诊断肾结核和尿路感染的效能。结果 肾结核组IFN-γ和IL-2水平均显著高于对照组(P<0.05)。IFN-γ+IL-2联合检测的敏感性为89.8%,显著高于MTB培养、GeneXpert MTB/RIF的敏感性(11.9%、47.5%)(P<0.001)。IFN-γ+IL-2联合检测、MTB培养、GeneXpert MTB/RIF检测鉴别诊断肾结核与尿路感染的曲线下面积分别为0.987、0.559、0.737。当IFN-γ和IL-2的最佳临界值分别为4.76、15.375 pg·mL-1时,诊断肾结核的敏感性为93.2%、特异性为95.2%。结论 MTB特异性IFN-γ和IL-2联合检测在肾结核辅助诊断及与尿路感染的鉴别诊断中具有较高的临床价值,可为肾结核的诊断提供实验室依据。

关键词: γ-干扰素, 白细胞介素-2, 结核分枝杆菌, 肾结核

Abstract:

Objective To investigate the role of combined determination of Mycobacterium tuberculosis(MTB)-specific interferon-gamma(IFN-γ) and interleukin(IL)-2 in the auxiliary diagnosis of renal tuberculosis and its differential diagnosis from urinary tract infection. Methods Totally,59 patients diagnosed as renal tuberculosis in clinical or laboratory settings(renal tuberculosis group) and 63 patients with urinary tract infection(control group) were enrolled from Zhengzhou Central Hospital from June 2023 to May 2024. The clean midstream urine samples were collected for MTB culture and GeneXpert MTB/RIF testing,and venous blood samples were collected for MTB-specific IFN-γ and IL-2 determinations. The efficacy of IFN-γ+IL-2 combined determination,MTB culture and GeneXpert MTB/RIF in differentiating renal tuberculosis from urinary tract infection was evaluated using receiver operating characteristic(ROC) curve. Results The secretion levels of IFN-γ and IL-2 in renal tuberculosis group were higher than those in control group(P<0.05). The sensitivity of IFN-γ+IL-2 combined determination was 89.8%,which was higher than those of MTB culture and GeneXpert MTB/RIF testing(11.9% and 47.5%,respectively,P<0.001). The areas under curves for differentiating renal tuberculosis from urinary tract infection by IFN-γ+IL-2 combined determination,MTB culture and GeneXpert MTB/RIF testing were 0.987,0.559 and 0.737,respectively. When the optimal cut-off values of IFN-γ and IL-2 were 4.76 and 15.375 pg·mL-1,the sensitivity for diagnosing renal tuberculosis was 93.2%,and the specificity was 95.2%. Conclusions The combined determination of MTB-specific IFN-γ and IL-2 has high clinical value in the auxiliary diagnosis of renal tuberculosis and its differential diagnosis from urinary tract infection,providing a reference for the diagnosis of renal tuberculosis.

Key words: Interferon-gamma, Interleukin-2, Mycobacterium tuberculosis, Renal tuberculosis

中图分类号: