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The importance of recombinant proteins of West Siberian isolates of Borrelia burgdorferi S.L. for serological diagnostic of ixodic tick borreliosis.

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Abstract

The structural proteins OspC, FlaB, FlaA and DbpB of agent of ixodic tick borreliosis are one of main antigens inducing humoral immunity at initial stages of
disease. Owing to it, the task was stated to evaluate antigen activity of recombinant proteins OspC (OscP-Bg), fragment of FlaB (f-FlaB) and DbpB of genospecies B. garinii and OspC (OscC-Ba) of genospecies of B. afzelii of West Siberian isolates of Borrelia Burgdorferi S.L. for their possible application as antigens for serological diagnostic of ixodic tick borreliosis The recombinant proteins OscP-Bg, OscC-Ba, f-FlaB, FlaA and DbpB are analyzed using technique of enzymoimmunoassay to detect ability to bound antibodies of serums of patients with ixodic tick borreliosis with localized and disseminated stage of infection. The difference of their sensitivity as antigens during detection of specific antibodies in blood serum of patients with ixodic tick borreliosis was demonstrated In serum of patients with ixodic tick borreliosis with disseminated stage of infection the level of specific IgM and IgG antibodies reacting with OscP-Bg, OscC-Ba, f-FlaB, FlaA and DbpB is within the limits 15.7-52.6% for IgG. The results of enzymoimmunoassay applied to patients with ixodic tick borreliosis for detection of IgM and IgG in serum demonstrated that OscP-Bg and f-FlaB determined the highest antigen activity with antigens. The study results make it possible to consider these proteins as perspective components for development of immune enzyme test system of diagnostic of ixodic tick borreliosis.

Klin Lab Diagn. 2014 Jun;(6):44-8. English Abstract

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