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Assessment of a Protein Cocktail-Based Skin Test for Bovine Tuberculosis in a Double-Blind Field Test in Cattle

文献类型: 外文期刊

作者: Xin, Ting 1 ; Jia, Hong 1 ; Ding, Jiabo 2 ; Li, Pingjun 1 ; Yang, Hongjun 3 ; Hou, Shaohua 1 ; Yuan, Weifeng 1 ; Guo, Xiaoyu 1 ; Wang, Haichun 1 ; Liang, Qianqian 1 ; Li, Ming 1 ; Wang, Bin 4 ; Zhu, Hongfei 1 ;

作者机构: 1.Chinese Acad Agr Sci, Inst Anim Sci, Beijing 100193, Peoples R China

2.China Inst Vet Drug Control, Beijing, Peoples R China

3.Shandong Acad Agr Sci, Dairy Cattle Res Ctr, Jinan, Peoples R China

4.China Agr Univ, State Key Lab Agrobiotechnol, Beijing 100094, Peoples R China

期刊名称:CLINICAL AND VACCINE IMMUNOLOGY ( 影响因子:3.233; 五年影响因子:2.562 )

ISSN: 1556-6811

年卷期: 2013 年 20 卷 4 期

页码:

收录情况: SCI

摘要: Bovine tuberculosis (bTB) is a worldwide zoonosis caused mainly by Mycobacterium bovis. The traditional diagnostic method used often is the tuberculin skin test, which uses bovine purified protein derivatives (PPD-B). However, it is difficult to maintain uniformity of PPD-B from batch to batch, and it shares common antigens with nonpathogenic environmental mycobacteria. To overcome these problems, M. bovis-specific antigens that showed good T cell stimulation, such as CFP-10, ESAT-6, Rv3615c, etc., have been used in the skin test, but there have been no large-scale clinical studies on these antigens. In this study, two combinations (CFP-10/ESAT-6/TB10.4 protein cocktail and CFP-10/ESAT-6/Rv3872/MPT63 protein cocktail) were developed and used as stimuli in the skin test. Cattle were double-blind tested to assess the efficiency of the protein cocktail-based skin tests. The results showed that the CFP-10/ESAT-6/TB10.4 protein cocktail-based skin test can differentiate TB-infected cattle from Mycobacterium avium-infected ones and that it shows a high degree of agreement with the traditional tuberculin skin test (kappa = 0.8536) and gamma interferon (IFN-gamma) release assay (kappa = 0.8154). Compared to the tuberculin skin test, the relative sensitivity and relative specificity of the CFP-10/ESAT-6/TB10.4-based skin test were 87% and 97%, respectively., The relative sensitivity and relative specificity of the CFP-10/ESAT-6/TB10.4-based skin test were 93% and 92%, respectively, on comparison with the IFN-gamma release assay. The correlation between the increases in skin thickness observed after the inoculation of stimuli was high (PPD-B versus CFP-10/ESAT-6/TB10.4, Spearman r of 0.8435). The correlation between the optical density at 450 nm (OD450) obtained after blood stimulation with PPD-B and the increase in skin thickness observed after inoculation of the CFP-10/ESAT-6/TB10.4 protein cocktail was high (Spearman r = 0.7335). Therefore, the CFP-10/ESAT-6/TB10.4-based skin test responses correlate to traditional measures of bovine TB evaluation, including skin test and gamma interferon release assay.

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