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J Reprod Immunol. 2010 Jun;85(2):168-71. doi: 10.1016/j.jri.2010.02.007. Epub 2010 May 4.

HtrA, RseP, and Tsp proteins do not elicit a pathology-related serum IgG response during sexually transmitted infection with Chlamydia trachomatis.

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  • 1Institute of Health and Biomedical Innovation and School of Life Sciences, Queensland University of Technology, Kelvin Grove, QLD 4053, Australia.


Chlamydia trachomatis sexually transmitted infection can cause serious reproductive morbidities. This study determined the prevalence of a serum IgG response to C. trachomatis putative stress response proteins in women, to test for an association with genital tract pathology. There was no significant association of serum IgG reactive with C. trachomatis HtrA, Tsp, or RseP with infection or pathology. cHSP60 serum IgG prevalence was significantly associated with infection compared to IgG negative infertile controls, but not with upper genital tract pathology. Serum IgG(1-4) antibody subclasses reactive with these antigens was not significantly different between cohorts, although different responses to each antigen were detected.

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