Application value of detecting Mycobacterium tuberculosis specific IgG/IgM antibodies for tuberculosis diagnosis with colloidal gold immunochromatography assay
LI Shuang-jun1, 2, ZHANG Zhi-guo3, YU Qin4, LUO Qiao1, 2, WANG Li3, LI Xiao-qin1, 2, LI Ma-chao2, LIU Hai-can2, WAN Kang-lin1, 2
1. School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China; 2. State Key Laboratory for Communicable Disease Control and Prevention, Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; 3. The Institute of Tuberculosis Prevention and Control of Changping District, Beijing 102200, China; 4. Beijing Chaoyang District Center for Disease Control and Prevention, Beijing 100021, China
Abstract:In this study, we estimated the application value of detecting Mycobacterium tuberculosis (MTB) specific IgG/IgM antibodies for tuberculosis diagnosis with colloidal gold immunochromatography assay (GICA). We collected 332 effective serum samples and their background information, including 260 patients with tuberculosis and 72 healthy individuals. The means of GICA was used to detect MTB specific IgG/IgM antibodies. Results were compared with the clinical diagnosis and the results of bacteriological tests. The SPSS 22.0 software was used to analyze the results, and when P<0.05 the difference was statistically significant. The sensitivity and specificity of GICA were 41.15% and 91.67%, and the sensitivity of the bacterial positive and negative patients were 51.38% and 33.77%, respectively. The positive rate of IgG/IgM antibodies detection with GICA (41.15%) was much higher than that of bacteria with acid-fast stain of sputum smear (18.84%) and sputum bacteria cultivation (36.15%) (P<0.05) respectively. The positive rate of the combination of tuberculosis antibody detection, sputum bacterial culture and sputum smear was 61.54%, higher than the result of single method or combination of two methods. The detection of specific antibodies against MTB in serum with GICA is sensitive, specific, rapid and convenient, which can be used in clinical screening. Meanwhile, there are still certain limitations of this method, and the sensitivity and specificity need to be improved. Therefore, the GICA can be used as an auxiliary diagnosis combined with sputum bacteriology,imaging test and clinical features rather than diagnose tuberculosis alone.
李霜君, 张治国, 余琴, 罗巧, 王莉, 李晓琴, 李马超, 刘海灿, 万康林. 胶体金免疫层析法检测结核分枝杆菌特异性IgG/IgM抗体对结核病诊断的应用价值[J]. 中国人兽共患病学报, 2018, 34(2): 139-144.
LI Shuang-jun, ZHANG Zhi-guo, YU Qin, LUO Qiao, WANG Li, LI Xiao-qin, LI Ma-chao, LIU Hai-can, WAN Kang-lin. Application value of detecting Mycobacterium tuberculosis specific IgG/IgM antibodies for tuberculosis diagnosis with colloidal gold immunochromatography assay. Chinese Journal of Zoonoses, 2018, 34(2): 139-144.
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