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Antibody Response to IR 6 , a Conserved Immunodominant Region of the VlsE Lipoprotein, Wanes Rapidly after Antibiotic Treatment of Borrelia burgdorferi Infection in Experimental Animals and in Humans

2001; Oxford University Press; Volume: 184; Issue: 7 Linguagem: Inglês

10.1086/323392

1537-6613

Mario T. Philipp, Lisa C. Bowers, Paul T. Fawcett, Mary B. Jacobs, Fang Ting Liang, Adriana Marques, Paul D. Mitchell, Jeanette E. Purcell, Marion S. Ratterree, Reinhard K. Straubinger,

Mosquito-borne diseases and control

Invariable region (IR)6, an immunodominant conserved region of VlsE, the antigenic variation protein of Borrelia burgdorferi is currently used for the serologic diagnosis of Lyme disease in humans and canines. A longitudinal assessment of anti-IR6 antibody levels in B. burgdorferi–infected rhesus monkeys revealed that this level diminished sharply after antibiotic treatment (within 25 weeks). In contrast, antibody levels to P39 and to whole-cell antigen extracts of B. burgdorferi either remained unchanged or diminished less. A longitudinal analysis in dogs yielded similar results. In humans, the anti-IR6 antibody titer diminished by a factor of ⩾4 in successfully treated patients and by a factor of <4 in treatment-resistant patients. This result suggests that the quantification of anti-IR6 antibody titer as a function of time should be investigated further as a test to assess response to Lyme disease therapy or to determine whether a B. burgdorferi infection has been eliminated