Abstract
The aim of the study was to characterize the dynamics of immunoglobulin IgG and IgM level in syphilis patients serum at different stages of the disease before and after the therapy towards 12 diagnostic antigens of T. pallidum in an microarray assay and to evaluate these data as possible prognostic markers. The dynamics of immunoglobulin IgG and IgM level was measured in the reaction of indirect immunofluorescence using microarray and compared to the results of non-treponemal RPR test and treponemal tests as EIA and reaction of passive hemagglutination. In microarray assay diagnostically high level of IgM in patients with primary, secondary and early latent and late latent syphilis decreased dramatically to zero after the successful therapy. Continuously high level of IgM after the therapy proposes the persistence of infection agents in the organism and points out the need of additional antimicrobial treatment. In most of the cases anti-treponemal IgG level also declined after the successful therapy and this confirms the appropriate treatment. The results of microarray assay coincide with the results of other mentioned laboratory tests for syphilis diagnostics. Microarray assay with the recombinant T. pallidum antigens gives the perspective for creating methods with wider spectrum of diagnostic and therapy control options using the IgM immunoglobulin level as a marker for successful syphilis treatment.
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