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The borrelial fibronectin-binding protein RevA is an early antigen of human Lyme disease.

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Previous studies using small numbers of serum samples from human patients and experimentally infected animals identified the frequent presence of antibodies recognizing RevA, a borrelial fibronectin-binding outer surface protein. We now demonstrate that most examined
Lyme disease spirochetes from North America and Europe contain genes encoding RevA proteins, some with extensive regions of conservation and others with moderate diversity. Line blot analyses using recombinant RevA from two diverse
Lyme disease spirochetes of RevA and serum samples from culture-confirmed human
Lyme disease patients from the United States (n = 46, mainly with early
Lyme disease) and Germany (>500, with early and late manifestations of
Lyme disease) were performed. The results indicated that a sizable proportion of patients produced antibodies that recognized recombinant RevA. Overall, RevA-based serological studies were less sensitive and less specific than other assay types, such as the VlsE-based C6 peptide assay. However, sera from patients in the initial stages of
Lyme disease contained antibodies against RevA, demonstrating that this protein is expressed early in human infection. Thus, RevA may be a useful target for preventative or curative therapies.

Clin Vaccine Immunol. 2010 Feb;17(2):274-80. doi: 10.1128/CVI.00437-09. Epub 2009 Dec 23. Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov’t

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