Diagnosis and follow-up of genital chlamydial infection by direct methods and by detection of serum IgG, IgA and secretory IgA

被引:7
作者
Fresse, A. S. [2 ]
Sueur, J. M. [2 ]
Hamdad, F. [1 ]
机构
[1] Amiens Univ Hosp, Dept Clin Bacteriol, Amiens, France
[2] Amiens Univ Hosp, Dept Lab Picardie, Amiens, France
关键词
C. trachomatis infections; sexually transmitted disease; direct diagnosis methods; secretory IgA; IgA and IgG antibodies in serum; TRACHOMATIS INFECTION; INFERTILE COUPLES; ANTIBODY; IMMUNITY; MARKERS; TESTS; MEN;
D O I
10.4103/0255-0857.71823
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Purpose: To determine the prevalence of Chlamydia trachomatis infection in a high-risk population by direct and indirect methods and to evaluate the diagnosis of secretory immunoglobulin A (sIgA). Patients and Methods: Urethral or endocervical specimens from 78 patients (48 females and 30 males) were examined by cell culture, direct fluorescence assay, PCR Cobas Amplicor (Roche Molecular Diagnostics), and sIgA was detected by the recombinant lipopolysaccharide (LPS)-enzyme-linked immunoassay (rELISA). Serum from each patient was also obtained and analysed for the presence of IgG and IgA antibody by in-house microimmunofluorescence (MIF) and by the rELISA method (Medac, Hamburg, Germany). Results: The overall C. trachomatis prevalence determined by direct methods was 28%. The detection of sIgA antibodies was significantly higher in the group of patients with a positive direct detection (50%) than in the group of negative direct detection (10.7%). The Chlamydia-specific IgA antibodies were detected by the rELISA in 40.9 and 53.6% of group I (positive direct detection) and group II patients (negative direct detection), respectively. The species-specific IgA antibodies were detected by the MIF method in 18.2 and 16.1% of group I and II patients, respectively. Chlamydia genus-specific IgG antibodies were detected by the rELISA in 86.4 and 83.9% of group I and group II patients and, C. trachomatis specific IgG were present in 81.8 and 73.2% of group I and group II patients, respectively, as assessed by the MIF test. Conclusion: Combining the positive direct methods and/or positive sIgA antibody results from cervical or urethral specimens had an indication of current C. trachomatis infection.
引用
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页码:326 / 331
页数:6
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