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 ...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.展开更多
目的探讨菌量负荷、疾病活动性、影像学累及范围、外周血淋巴细胞计数等因素对全血γ干扰素释放试验结果的影响。方法选取肺结核患者106例(包括44例菌阳肺结核患者、47例菌阴肺结核患者和15例陈旧性肺结核患者)和健康对照组35名,所有患...目的探讨菌量负荷、疾病活动性、影像学累及范围、外周血淋巴细胞计数等因素对全血γ干扰素释放试验结果的影响。方法选取肺结核患者106例(包括44例菌阳肺结核患者、47例菌阴肺结核患者和15例陈旧性肺结核患者)和健康对照组35名,所有患者(健康对照者)抽取外周血并以肝素抗凝分别与结核分枝杆菌特异抗原分泌抗原靶-6(ESAT-6)、ESAT-6/培养滤过蛋白-10(CFP-10)融合抗原、PPD共同孵育,并用ELISA的方法检测血浆中IFN-γ的含量,各组间差异的比较应用Mann-Whitney U检验,P<0.05为差异有统计学意义。结果抗原刺激后分泌IFN-γ量的中位数在菌阳组和菌阴组之间差异无统计学意义[ESAT-6(114.7 pg/ml vs 82 pg/ml,Z=-0.500,P>0.05),ESAT-6/CFP-10(3488 pg/ml vs 2350 pg/ml,Z=-0.949,P>0.05),PPD(4514 pg/ml vs4326 pg/ml,Z=-0.822,P>0.05)];ESAT-6和ESAT-6/CFP-10抗原刺激后分泌IFN-γ量的中位数在菌阴组和陈旧性肺结核组之间差异无统计学意义[ESAT-6(82 pg/ml vs 137 pg/ml,Z=-0.781,P>0.05),ESAT-6/CFP-10(2350 pg/ml vs 1784 pg/ml,Z=-1.685,P>0.05)],ESAT-6抗原刺激后分泌IFN-γ量的中位数在菌阳组和陈旧性肺结核组之间差异无统计学意义(114.7 pg/ml vs 137 pg/ml,Z=-0.757,P>0.05),但ESAT-6/CFP-10融合抗原刺激后分泌IFN-γ量的中位数在菌阳组和陈旧性肺结核组之间差异有统计学意义(3488 pg/ml vs 1784 pg/ml,Z=-0.242,P<0.05);ESAT-6、ESAT-6/CFP-10融合抗原刺激后分泌IFN-γ量的中位数在肺部病变累及少和肺部病变累及多之间差异有统计学意义[ESAT-6(117 pg/ml vs 42 pg/ml,Z=-2.341,P<0.05),ESAT-6/CFP-10(3055pg/ml vs 1562.5 pg/ml,Z=-2.850,P<0.05)];ESAT-6、ESAT-6/CFP-10融合抗原、PPD抗原刺激后分泌IFN-γ量的中位数在外周血淋巴细胞≥1.0×109/L和<1.0×109/L之间差异有统计学意义[ESAT-6(97.5 pg/ml vs 48 pg/ml,Z=-2.745,P<0.05),ESAT-6/CFP-10(3082 pg/ml vs 1190 pg/ml,Z=-2.911,P<0.05),PPD(4322 pg/ml vs 3200 pg/ml,Z=-2.216,P<0.05)]。结论基于RD1区的抗原刺激后外周血分泌IFN-γ的量不受菌量负荷的影响,但可能受到外周血淋巴细胞绝对值和病变累及范围的影响。展开更多
文摘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.
文摘目的探讨菌量负荷、疾病活动性、影像学累及范围、外周血淋巴细胞计数等因素对全血γ干扰素释放试验结果的影响。方法选取肺结核患者106例(包括44例菌阳肺结核患者、47例菌阴肺结核患者和15例陈旧性肺结核患者)和健康对照组35名,所有患者(健康对照者)抽取外周血并以肝素抗凝分别与结核分枝杆菌特异抗原分泌抗原靶-6(ESAT-6)、ESAT-6/培养滤过蛋白-10(CFP-10)融合抗原、PPD共同孵育,并用ELISA的方法检测血浆中IFN-γ的含量,各组间差异的比较应用Mann-Whitney U检验,P<0.05为差异有统计学意义。结果抗原刺激后分泌IFN-γ量的中位数在菌阳组和菌阴组之间差异无统计学意义[ESAT-6(114.7 pg/ml vs 82 pg/ml,Z=-0.500,P>0.05),ESAT-6/CFP-10(3488 pg/ml vs 2350 pg/ml,Z=-0.949,P>0.05),PPD(4514 pg/ml vs4326 pg/ml,Z=-0.822,P>0.05)];ESAT-6和ESAT-6/CFP-10抗原刺激后分泌IFN-γ量的中位数在菌阴组和陈旧性肺结核组之间差异无统计学意义[ESAT-6(82 pg/ml vs 137 pg/ml,Z=-0.781,P>0.05),ESAT-6/CFP-10(2350 pg/ml vs 1784 pg/ml,Z=-1.685,P>0.05)],ESAT-6抗原刺激后分泌IFN-γ量的中位数在菌阳组和陈旧性肺结核组之间差异无统计学意义(114.7 pg/ml vs 137 pg/ml,Z=-0.757,P>0.05),但ESAT-6/CFP-10融合抗原刺激后分泌IFN-γ量的中位数在菌阳组和陈旧性肺结核组之间差异有统计学意义(3488 pg/ml vs 1784 pg/ml,Z=-0.242,P<0.05);ESAT-6、ESAT-6/CFP-10融合抗原刺激后分泌IFN-γ量的中位数在肺部病变累及少和肺部病变累及多之间差异有统计学意义[ESAT-6(117 pg/ml vs 42 pg/ml,Z=-2.341,P<0.05),ESAT-6/CFP-10(3055pg/ml vs 1562.5 pg/ml,Z=-2.850,P<0.05)];ESAT-6、ESAT-6/CFP-10融合抗原、PPD抗原刺激后分泌IFN-γ量的中位数在外周血淋巴细胞≥1.0×109/L和<1.0×109/L之间差异有统计学意义[ESAT-6(97.5 pg/ml vs 48 pg/ml,Z=-2.745,P<0.05),ESAT-6/CFP-10(3082 pg/ml vs 1190 pg/ml,Z=-2.911,P<0.05),PPD(4322 pg/ml vs 3200 pg/ml,Z=-2.216,P<0.05)]。结论基于RD1区的抗原刺激后外周血分泌IFN-γ的量不受菌量负荷的影响,但可能受到外周血淋巴细胞绝对值和病变累及范围的影响。
