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Journal of Clinical Microbiology, December 1998, p. 3474-3479, Vol. 36, No. 12
Department of Clinical Biochemistry,
Received 17 June 1998/Returned for modification 30 July
1998/Accepted 3 September 1998
Sera from 210 patients with Lyme borreliosis (LB) were studied by
an enzyme-linked immunosorbent assay (ELISA) based on a synthetic
peptide (pepC10) comprising the C-terminal 10-amino-acid residues of
OspC of Borrelia burgdorferi. We found that 36.3 and 45.0%
of the serum samples from patients with erythema migrans (EM) and
neuroborreliosis (NB), respectively, displayed immunoglobulin M (IgM)
anti-pepC10 reactivities, while these samples rarely (
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Peptide-Based OspC Enzyme-Linked Immunosorbent
Assay for Serodiagnosis of Lyme Borreliosis
8%) displayed
IgG antibody reactivities. Sera from patients with acrodermatitis chronica atrophicans did not contain anti-pepC10 antibodies. The diagnostic performance of this newly developed peptide ELISA was compared with those of an ELISA based on the full-length recombinant OspC protein (rOspC) and a commercially available ELISA based on the
B. burgdorferi flagellum (Fla). The sensitivity of the IgM
pepC10 ELISA was slightly lower (P < 0.04) than that
of the rOspC ELISA for EM patients (36.3 versus 43.8%), while there
was no difference for NB patients (45.0 versus 48.0%). However, the optical density values obtained by the pepC10 ELISA were generally higher than those obtained by the rOspC ELISA, leading to a
significantly better quantitative discrimination between seropositive
patients with NB and controls (P < 0.008). The
specificity of the pepC10 ELISA was similar to those of the rOspC ELISA
and the Fla ELISA for relevant controls including patients with
syphilis and mononucleosis. Although the overall diagnostic sensitivity
of the Fla ELISA was superior, 8.8 and 12.0% of the EM and NB
patients, respectively, were antibody positive only by the pepC10
ELISA. Thus, use of a diagnostic test for LB based on the detection of
IgM antibodies to pepC10 and Fla has increased sensitivity for the
diagnosis of early LB.
*
Corresponding author. Mailing address: Department of
Clinical Biochemistry, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen S, Denmark. Phone: (45) 32683779. Fax: (45) 32683228. E-mail: mth{at}ssi.dk.
Journal of Clinical Microbiology, December 1998, p. 3474-3479, Vol. 36, No. 12
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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