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Improved serodiagnosis of early Lyme borreliosis: Immunoblot with local Borrelia afzelii strain

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Jovičić V, Grego E, Lako B, Ristović B, Lepšanović Z, Stajković N. Improved serodiagnosis of early Lyme borreliosis: Immunoblot with local Borrelia afzelii strain. APMIS 2003;111:1053–9.

To improve the serodiagnosis of Lyme borreliosis (LB) the performances of four tests were evaluated. An indirect immunofluorescent assay based on Borrelia burgdorferi s.s. , enzyme-linked immunosorbent assay (ELISA) based on local isolates of Borrelia afzelii and B. burgdorferi s.s., and immunoblot (IB) of B. afzelii were prepared. The serum panels contained 214 serum samples: control group (n=120) and patients at different stages of LB (n=94). The specificity of IB was 96%, of in-house ELISA 93%, and of IFA 89%. In early LB the sensitivity of IFA was 36%, ELISA 67%, and IB 93%. In late-stage LB the sensitivity was: 72% for IFA, 80% for ELISA, and 94% for IB. Comparison of in-house and Behring ELISA showed that the sensitivity of the serological assay could be increased when the test was based on local Borrelia strains. IgM and IgG antibodies from sera of patients with early and late LB most frequently demonstrated reactivity to OspC. The other significant proteins in early LB were: p39, p41 in IgM IB, and p83/100, p39, Osp17 in IgG IB; in late LB: p39, p41 in IgM IB, and p83/100, Osp17, p21 and p43 in IgG IB. Using IB based on local B. afzelii isolates improves the serodiagnosis of early LB in our geographical region.
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Keywords: Lyme borreliosis; enzyme-linked immunosorbent assay; immunoblot; indirect immunofluorescent assay; serodiagnosis

Document Type: Research Article

Affiliations: 1: Institute of Molecular Genetics and Genetic Engineering, Belgrade 2: Institute for Microbiology, Military Medical Academy, Belgrade, Serbia and Montenegro

Publication date: November 1, 2003

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