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The VlsE (IR6) peptide ELISA in the serodiagnosis of lyme facial paralysis.

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By Peltomaa M, McHugh G, Steere AC • www.ProHealth.com • September 1, 2004


Abstract

OBJECTIVE: Facial paralysis is a manifestation of early disseminated Lyme neuroborreliosis. In the current study, we compared the immunoglobulin G (IgG) VlsE (sixth invariant region) peptide enzyme-linked immunosorbent assay (ELISA) with the current two-tier approach of sonicate ELISA and Western blot in the serodiagnosis of Lyme facial paralysis.

STUDY DESIGN: Retrospective.

SETTING: Tertiary referral center.

PATIENTS: Serum samples from 47 Lyme patients with facial paralysis and 86 control subjects were analyzed for IgG antibodies to VlsE peptide of Borrelia burgdorferi and for immunoglobulin M (IgM) and IgG antibodies to sonicate antigens of B. burgdorferi using the two-tier approach.

INTERVENTION: Diagnostic.

MAIN OUTCOME MEASURE: Serum IgG antibody responses to VlsE (IR6) peptide.

RESULTS: All 47 (100%) patients with facial paralysis and 4 (5%) of 86 controls had positive antibody responses to the VlsE peptide. In the two-tier test, 41 (87%) patients had positive IgM, 31 (66%) had positive IgG, and all 47 patients had positive IgM or IgG responses. Of the 86 control subjects, 2 (2%) had positive results with the two-tier test. Thus, the sensitivities of the VlsE and the two-tier tests were 100%; the specificity of the VlsE ELISA was 95% and the specificity of the two-tier test was 98%.

CONCLUSIONS: The VlsE peptide ELISA showed a high sensitivity and specificity in the serological diagnosis of Lyme facial paralysis, similar to the two-tier test. The principal advantage of the VlsE peptide ELISA is that it requires only one test rather than four tests. However, the specificity of the VlsE test may not be as high as that of the two-tier test.

Otol Neurotol. 2004 Sep;25(5):838-41. Evaluation Studies; Research Support, Non-U.S. Gov't





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