Use of the skin protection assay in experimental syphilis to assess protective immunity against a specific Treponema pallidum surface epitope |
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Authors: | Blanco David R Champion Cheryl I Lovett Michael A |
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Affiliation: | Department of Medicine, Division of Infectious Diseases, University of California at Los Angeles, Los Angeles, CA 90095, USA. dblanco@mednet.ucla.edu |
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Abstract: | We have recently shown that a monoclonal antibody, designated M131, that binds a surface phosphorylcholine epitope on Treponema pallidum possesses complement-dependent killing activity and confers partial protection in rabbits following passive immunization (Blanco et al., 2005, Infect. Immun. 73:3083-3095). In this study, the protective potential of M131 was further tested using the rabbit skin protection assay of Titus and Weiser. Both M131 and infection-derived immune rabbit serum resulted in significant lesion delays corresponding to at least a 90% reduction of the treponemal challenge inoculum. The skin protection assay provides a way to assess the protective potential of specific immunogens while using far less antibody than in passive immunization protocols. |
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Keywords: | Treponema pallidum Skin protection assay NRS normal rabbit serum IRS immune rabbit serum |
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