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中国防痨杂志 ›› 2009, Vol. 31 ›› Issue (7): 381-383.

• 论著 •    下一篇

5种结核分枝杆菌特异蛋白质的抗原性分析

杨柳;苏明权;岳乔红;张建芳;马越云;刘家云;郝晓柯   

  1. 第四军医大学西京医院全军临床检验医学中心 西安 710032
  • 出版日期:2009-07-10 发布日期:2011-11-03

Evaluation of antigenicity of 5 Mycobacterium tuberculosis specific proteins

Yang Liu,Su Mingquan, Yue Qiaohong, Zhang Jianfang, Ma Yueyun,Liu Jiayun, Hao Xiaoke   

  1. Center for clinical laboratory medicine of people’s Liberation Army,Xijing Hospital,Fourth Military Medical Universty,Xi’an 710032
  • Online:2009-07-10 Published:2011-11-03

摘要: 目的评价14、16、38kD、mtb81和 ESAT-6等5种结核分枝杆菌特异蛋白质的抗原性。方法利用14、16、38kD、mtb81和 ESAT-6等5种重组蛋白建立ELISA方法,检测120份结核病人、30份非结核呼吸道感染病人和30份健康人血清中相应抗体。结果ELISA显示5种结核杆菌特异性蛋白质的特异性均高于95%;敏感性和准确性则不尽相同,其中38kD的检测敏感性最高,为80.8%;14、16kD、mtb81和 ESAT-6的检测敏感性分别为52.5%、68.3%、35.8%和44.2%。结论5种结核杆菌特异性蛋白质均具有不同程度的抗原性。进一步提高抗原或抗体的检测灵敏度将有利于结核病的诊断。

关键词: 分枝杆菌, 结核, 重组蛋白质类, 抗原, 细菌, 细菌蛋白质类

Abstract: ObjectiveTo evaluate antigenicity of 5 Mycobacterium tuberculosis specific proteins including 14, 16, 38 kD, Mtb81 and ESAT-6. MethodsAll the recombinant proteins of 14, 16, 38 kD, mtb81 and ESAT-6 were generated, and employed in ELISA to detect the antibodies in serum samples of 120 TB patients, 30 non-TB patients and 30 normal human. ResultsThe Results showed that all 5 proteins gave above 95% specificity, while 38 kD showed 80.8% sensitivity which was more sensitive than any other assays using 14, 16 kD, Mtb81 and ESAT-6 recombinant proteins. ConclusionAll 5 specific proteins of Mycobacterium tuberculosis showed different levels of antigenicity. It was useful for TB diagnosis, and improved assay might be helpful to detect the antigens or antibodies against them.

Key words: Mycobacterium tuberculosis, Recombinant proterins, Antigens,bacterial, Bacterial proteins