检验医学 ›› 2023, Vol. 38 ›› Issue (4): 352-356.DOI: 10.3969/j.issn.1673-8640.2023.04.010

• 论著 • 上一篇    下一篇

新型冠状病毒中和抗体与特异性抗体检测结果一致性分析

肖秀美1, 梁超2, 刘彩红2, 李晓光2()   

  1. 1.北京大学第三医院检验科,北京 100191
    2.北京大学第三医院感染疾病科,北京 100191
  • 收稿日期:2021-03-18 修回日期:2022-08-18 出版日期:2023-04-28 发布日期:2023-06-21
  • 通讯作者: 李晓光,E-mail:caitlin901@163.com
  • 作者简介:肖秀美,女,1979年生,硕士,副主任技师,主要从事临床微生物实验室诊断工作。
  • 基金资助:
    科技部重大专项基金资助项目(2018ZX10732401-003)

Comparison of SARS-CoV-2 neutralizing antibody and specific antibody determination results

XIAO Xiumei1, LIANG Chao2, LIU Caihong2, LI Xiaoguang2()   

  1. 1. Department of Clinical Laboratory,Peking University Third Hospital,Beijing 100191,China
    2. Department of Infectious Diseases,Peking University Third Hospital,Beijing 100191,China
  • Received:2021-03-18 Revised:2022-08-18 Online:2023-04-28 Published:2023-06-21

摘要:

目的 探讨新型冠状病毒(SARS-CoV-2)中和抗体与特异性IgM、IgG抗体的一致性,为疫苗接种人群特异性抗体检测结果的临床解读提供依据。方法 选取排除SARS-CoV-2感染的健康医务人员148名,其中127名接种过SARS-CoV-2疫苗(按样本采集日期与第2剂疫苗接种日期的时间间隔分为14~30 d组、31~60 d组、61~90 d组、91~120 d组、121~150 d组、>150 d组),21名未接种SARS-CoV-2疫苗。采用胶体金免疫层析法(LFIA)和酶联免疫吸附试验(ELISA)检测SARS-CoV-2中和抗体,采用磁微粒化学发光免疫分析法检测特异性IgM、IgG抗体,分析3种方法检测结果的一致性。结果 14~30 d组ELISA中和抗体、LFIA中和抗体、特异性IgG抗体的阳性率均为100.00%,特异性IgM抗体阳性率为27.27%。随着疫苗接种时间的延长,3种方法的抗体阳性率均逐渐下降。31~120 d各组特异性IgG抗体阳性率均最高,121~150 d组和>150 d组ELISA中和抗体阳性率最高。ELISA中和抗体检测结果与LFIA的总符合率为85.14%,一致性一般(Kappa=0.698);与特异性IgM抗体的总符合率为60.14%,一致性较差(Kappa=0.144);与特异性IgG抗体的总符合率为82.43%,一致性一般(Kappa=0.649)。特异性IgG抗体与LFIA中和抗体检测结果的总符合率为83.78%,一致性一般(Kappa=0.677)。结论 磁微粒化学发光免疫分析法特异性IgG抗体检测结果与LFIA、ELISA中和抗体检测结果的符合率>80%,但一致性一般,需谨慎解读特异性IgG抗体阳性结果。

关键词: 新型冠状病毒, 特异性抗体, 中和抗体, 酶联免疫吸附试验, 胶体金免疫层析法, 磁微粒化学发光免疫分析法

Abstract:

Objective To compare severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) neutralizing antibody and specific antibody determination results,and to provide a reference for clinical interpretation of specific antibody determination results in vaccinated population. Methods Totally,148 health care personnels who were excluded from SARS-CoV-2 infection were enrolled. Among them,127 cases were inoculated with SARS-CoV-2 vaccine,and they were classified into 14-30 d group,31-60 d group,61-90 d group,91-120 d group,121-150 d group and >150 d group according to the time interval between the date of sample collection and the date of the second injection of vaccine. Totally,21 cases were not inoculated with SARS-CoV-2 vaccine. Lateral flow immunoassay(LFIA) and enzyme-linked immunosorbent assay(ELISA) were used to determine SARS-CoV-2 neutralizing antibodies,and magnetic particle chemiluminescence immunoassay was used to determine SARS-Cov-2 specific IgM and IgG antibodies. The consistency of 3 methods was analyzed. Results The positive rates of ELISA neutralizing antibody,LFIA neutralizing antibody and specific IgG antibody were 100.00%,and the positive rate of specific IgM antibody was 27.27% in the 14-30 d group. With the extension of vaccination time,the positive rates of the 3 methods were decreased gradually. The positive rate of specific IgG antibody was the highest in 31-120 d groups,and the positive rate of ELISA neutralizing antibody was the highest in 121-150 d group and >150 d group. The total consistency between ELISA and LFIA for neutralizing antibody was 85.14%,and the Kappa value was 0.698. The total consistency for specific IgM antibody was 60.14%,and the Kappa value was 0.144. The total consistency for specific IgG antibody was 82.43%,and the Kappa value was 0.649. The total consistency of specific IgG antibody and LFIA neutralizing antibody was 83.78%,and the Kappa value was 0.677. Conclusions The consistency between the determination results of specific IgG antibody by magnetic particle chemiluminescence immunoassay and the determination results of neutralizing antibody by LFIA and ELISA is >80%,and the consistency is general. The positive results of specific IgG antibody should be interpreted with caution.

Key words: Severe acute respiratory syndrome coronavirus 2, Specific antibody, Neutralizing antibody, Enzyme-linked immunosorbent assay, Colloidal gold immunochromatography, Magnetic particle chemiluminescence immunoassay

中图分类号: