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The serodiagnositic value of Chlamydia trachomatis antigens in antibody detection using luciferase immunosorbent assay

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机构: [1]Southern Med Univ, Sch Publ Hlth, Dept Epidemiol, Guangzhou, Guangdong, Peoples R China [2]Guangzhou Univ Chinese Med, Affiliated Hosp 2, Dept Emergency, Guangzhou, Guangdong, Peoples R China [3]Southern Med Univ, Dermatol Hosp, Guangzhou, Peoples R China [4]Chenzhou 1 Peoples Hosp, Chenzhou, Peoples R China
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关键词: Chlamydia trachomatis luciferase immunosorbent assay (LISA) plasmid-encoded protein 3 (Pgp3) translocated membrane-associated effector A (TmeA) inclusion membrane protein for actin assembly (InaC) heat shock protein 60 (HSP60)

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Introduction: Among the different antigens used in the detection of anti-Chlamydia trachomatis antibodies, significant differences in sensitivity and specificity have been observed. Further evaluation of C. trachomatis antigens in antibody detection is urgently needed for the development and application of C. trachomatis serologic assays. Methods: Chlamydia trachomatis antigens Pgp3, TmeA, InaC, and HSP60 were selected and used in luciferase immunosorbent assay (LISA). The detection results obtained from well-defined C. trachomatis positive and negative samples were compared with the commercial C. trachomatis ELISA (Mikrogen) for performance evaluation. Results: Pgp3, TmeA, InaC, and HSP60-based LISA showed sensitivity of 92.8, 88.8, 90.4, and 94.4%, and specificity of 99.2, 99.2, 99.2, and 92%, respectively. ROC analysis indicated that Pgp3-based LISA showed similar performance to Mikrogen ELISA (AUC 0.986 vs. 0.993, p = 0.207). Furthermore, four C. trachomatis antigens achieved strong diagnostic efficiency, i.e., positive likelihood ratios [+LR] >= 10 in C. trachomatis-infected women and negative likelihood ratios [-LR] <= 0.1 in C. trachomatis negative low exposure risk children, but only Pgp3 and TmeA showed strong diagnostic value in general adults. In addition, Pgp3, TmeA, and InaC, but not HSP60, achieved high performance, i.e., both positive predictive value (PPV) and negative predictive value (NPV) >= 90.9%, and showed no significant cross-reactivity with anti-Chlamydiapneumoniae. Conclusion: Three C. trachomatis species-specific antigens Pgp3, TmeA, and InaC show superior performance in the detection of anti-C. trachomatis antibody, indicating the potential to be used in developing C. trachomatis serologic tests.

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出版当年[2023]版:
大类 | 3 区 医学
小类 | 3 区 公共卫生、环境卫生与职业卫生
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大类 | 3 区 医学
小类 | 3 区 公共卫生、环境卫生与职业卫生
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Q1 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
最新[2023]版:
Q2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

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第一作者机构: [1]Southern Med Univ, Sch Publ Hlth, Dept Epidemiol, Guangzhou, Guangdong, Peoples R China
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