Purpose:
Remnant antibodies might be prevalent in the general population, thus recognizing relevant seropositivity might be challenging. The sequential nature of the anti-Borrelia antibody response might be diagnostically utilized. We aimed to specify details which might potentially be useful in orientating the diagnostic schedule.
Methods:
We processed the sera of 1304 patients using a recombinant antigen-based ELISA between Aprils of 2017 and 2019. Seroreactivity (when coherent with the anamnestic data) was confirmed with a line immunoassay (LIA). ELISA testing (IgG and/or IgM) was reactive in 539 cases. 107 patients with persistent symptoms tested positive or borderline with IgG ELISA.
Results:
A significant difference was observed (Mann-Whitney U-test p=0.003) between the LIA scores of patients with characteristic (arthritis, acrodermatitis, neuropathy, other objective neurologic disorder; n=83; median LIA score: 16) and non-specific symptoms (entirely subjective complaints, other known disease, lone subfebrility, uveitis; n=24; median LIA score: 6). 101 of the 107 patients tested positive for IgG against any specific protein by LIA. Those with a LIA score reaching the group median of 15 (n=51) displayed strong anti-VlsE IgG positivity or a typical late IgG antibody (against p100, p18 or p39) more often than those below (88,2% vs. 30% and 100% vs. 38% respectively, Χ2 p<0.0001).
Conclusions:
Weak LIA positivity (especially anti-VlsE IgG) in combination with the lack of late antibodies in patients with persistent symptoms might suggest the presence of remnant antibodies and prompt scrupulous differential diagnosis.
South-Pest Central Hospital, National Institute for Infectology and Haematology, Budapest, Hungary
EB/14/2019 (license number by Institutional Commitee of Science and Research Ethics)
EB/14/2019 (license number by Institutional Commitee of Science and Research Ethics)
Primary Language | English |
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Subjects | Clinical Sciences |
Journal Section | Research Articles |
Authors | |
Project Number | EB/14/2019 (license number by Institutional Commitee of Science and Research Ethics) |
Publication Date | September 30, 2020 |
Published in Issue | Year 2020 Volume: 5 Issue: 3 |
Creative Commons Attribution Non-Commercial License: The articles in the Journal of Immunology and Clinical Microbiology are open access articles licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.