Immunoelectrophoresis and its modifications were applied to analysis of a lipopolysaccharide-like component (LPS-LC) extracted from Borrelia garinii strains K24 and K48 isolated from Ixodes ricinus and Borrelia burgdorferi sensu stricto strain B31. A modification of the hot phenol-water method was used for isolation of LPS. Immunoelectrophoresis (IE) and crossed immunoelectrophoresis (CIE) of LPS-LC with polyclonal rabbit antisera revealed a pattern and properties partially similar to LPS from other Gram-negative bacteria. B. garinii LPS-LC formed in CIE a diffuse band extending from the start to the anode. Similarly, the shape and position of the band in IE did not show major differences from LPS of other Gram-negative bacteria. The LPS-LC extracted from the three genomic groups of B. burgdorferi sensu lato were found to have similar immunochemical properties irrespective of their genotype origin.

Institute of Preventive and Clinical Medicine Slovak Health University Bratislava Slovakia

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