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结核菌素试验阳性的接触者随访期间γ-干扰素释放试验的研究

Interferon-gamma release assays during follow-up of tuberculin skin test-positive contacts
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摘要 背景:在进行大规模接触者调查后,对结核菌素试验(TST)阳性个体提供预防性抗结核治疗。目的:研究随访期间异烟肼(INH)的治疗效果和γ-干扰素释放试验(IGRA)的时效。设计:在大规模接触者调查期间,TST检测为阳性的对象(n=122例)纳入本研究。在2年里,每6个月抽取一次血标本用来进行两种试验。结果:122例中,36例(29.5%)完成异烟肼预防性治疗,71例(58.2%)每6个月进行一次X线筛查随访,另有15例(12.3%)未完成异烟肼预防性治疗。阳性者的总百分率在2年间保持稳定,大约在45%~50%,但随着时间的推移,个体的反应有变化。大多数初始IGRA低者,随访期间其结果仍然在临界值以下,初始IGRA结果高的仍为阳性,而IGRA初始结果为中等程度者,随访期间有多种动态类型。结论:本研究显示IGRA反应随着时间推移变异较大,提示其在潜伏感染个体随访中的应用价值有限。然而,在那些初始IGRA为中等程度结果的个体表现出不同动态类型的意义,需要进一步研究。
出处 《国际结核病与肺部疾病杂志》 2009年第1期6-16,共11页 The International Journal of Tuberculosis and Lung Disease
基金 funded by unrestricted grants from the Mr Willem Bakhuys Roozeboom Foundation Laren without any role of the sponsor in the design and conduct of the study the collection management analysis and in terpretation of the data or the preparation review or approval of the manuscript. Author AB has attended advisory board meetings in 2005 and 2006 for Oxford lmmunotec the manufacturer ofT-SPOT. TB.
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