Chlamydial antibodies in semen: Search for “silent” chlamydial infections in asymptomatic andrological patients
- 1 July 1996
- journal article
- research article
- Published by Springer Nature in Infection
- Vol. 24 (4) , 309-313
- https://doi.org/10.1007/bf01743366
Abstract
The importance of a serological diagnostic workup in male genitourinary infections withChlamydia trachomatis and its relevance for male infertility is still under debate. In a prospective study, antichlamydial serum and seminal plasma antibodies of 131 consecutive patients (mean age 31: 20–57) without evidence of acute urethritis and with negative urethral chlamydial culture were investigated. The antibody determination was carried out with a genus specific rELISA. In patients with positive seminal plasma IgA, chlamydial genome was evaluated by polymerase chain reaction (PCR). The results were associated with standard semen parameters according to evaluated WHO guidelines. Specific serum IgG antibodies were found in 51 patients (38.9%), IgA in in 39 (29.7%); both antibodies were present in 25 patients (19%). Seminal plasma IgG was demonstrable in seven patients (5.3%), IgA in 26 (19.9%), and five patients were positive for both antibody classes (3.8%). Of the 26 men positive for specific seminal plasma IgA antibodies 12 did not demonstrate a serum antibody reaction. Only two patients with positive IgA titers in their seminal plasma showed a positive chlamydial genome reaction in PCR (8%). Men with antichlamydial seminal plasma IgA and/or IgG did not differ significantly in any of the standard semen sperm parameters from men testing negative for antibodies, with the exception of peroxidase positive leukocytes (pin situ hybridization. Die Relevanz einer serologischen Diagnostik in der Abklärung männlicher Genitalinfektionen mitChlamydia trachomatis und ihre Bedeutung für die männliche Infertilität ist unklar. In einer prospektiven Studie untersuchten wir Serum- und Seminalplasmaantikörper gegenC. trachomatis von 131 konsekutiven Patienten (31: 20–57 Jahre) ohne Hinweis für eine akute Urethritis mit negativer urethraler Chlamydienkultur. Die Antikörperbestimmung wurde mit einem genusspezifischen r-ELISA durchgeführt. Bei Patienten mit positiven Seminalplasma-IgA wurde ein PCR-Nachweis auf Chlamydiengenom durchgeführt. Die Befunde wurden mit Standard-Ejakulatparametern nach WHO-Kriterien verglichen. Serum-IgG-Antikörper fanden sich bei 51 Patienten (38,9%), Serum-IgA-Antikörper bei 39 Männern (29,7%), beide Antikörper bei 25 Patienten (19%). Seminalplasma-IgG wurde bei 7 (5,3%), IgA bei 26 Patienten (19,9%), beide Antikörper bei fünf Männern (3,8%) nachgewiesen. Von den 26 Männern mit positiven Seminalplasma-IgA-Titern wiesen 12 keine Serum-IgA-Antikörper auf. Nur zwei der Patienten mit positiven Seminalplasma-IgA-Titern zeigten eine positive Chlamydien-PCR (8%). Männer mit Seminalplasma-IgA und/oder IgG-Antikörpern unterschieden sich bezogen auf die Standard-Ejakulatparameter nicht signifikant von Patienten ohne Antikörper. Einzige Ausnahme war der vermehrte Nachweis von paroxidase-positiven Leukozyten (pin situ Hybridisierung zu überprüfen.Keywords
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