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Journal of Clinical Microbiology, May 2000, p. 1735-1739, Vol. 38, No. 5
Department of Entomology, The Connecticut
Agricultural Experiment Station, New Haven, Connecticut
065041; Section of Rheumatology,
Department of Medicine,2 and Section of
Immunobiology and Howard Hughes Medical
Institute,4 Yale University School of
Medicine, New Haven, Connecticut 06520; and Division of
Rheumatic Diseases, Department of Medicine, University of
Connecticut Health Center, Farmington, Connecticut
060303
Received 19 October 1999/Returned for modification 28 December
1999/Accepted 21 February 2000
Class-specific enzyme-linked immunosorbent assays (ELISAs) with
purified recombinant antigens of Borrelia burgdorferi sensu stricto and Western blot analyses with whole cells of this spirochete were used to test human sera to determine which antigens were diagnostically important. In analyses for immunoglobulin M (IgM) antibodies, 14 (82%) of 17 serum samples from persons who had erythema
migrans reacted positively by an ELISA with one or more recombinant
antigens. There was frequent antibody reactivity to protein 41-G
(p41-G), outer surface protein C (OspC), and OspF antigens. In an ELISA
for IgG antibodies, 13 (87%) of 15 serum samples had antibodies to
recombinant antigens; reactivity to p22, p39, p41-G, OspC, and OspF
antigens was frequent. By both ELISAs, serum specimens positive for
OspB, OspE, and p37 were uncommon. Analyses of sera obtained from
persons who were suspected of having human granulocytic ehrlichiosis
(HGE) but who lacked antibodies to ehrlichiae revealed IgM antibodies
to all recombinant antigens of B. burgdorferi except OspB
and IgG antibodies to all antigens except OspE. Immunoblotting of sera
from the study group of individuals suspected of having HGE reaffirmed
antibody reactivity to multiple antigens of B. burgdorferi.
There was minor cross-reactivity when sera from healthy subjects or
persons who had syphilis, oral infections, or rheumatoid arthritis were
tested by ELISAs with p37, p41-G, OspB, OspC, OspE, and OspF antigens.
Although the results of class-specific ELISAs with recombinant antigens
were comparable to those recorded for assays with whole-cell antigen and for individuals with confirmed clinical diagnoses of Lyme borreliosis, immunoblotting is still advised as an adjunct procedure, particularly when there are low antibody titers by an ELISA.
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Copyright © 2000, American Society for Microbiology. All rights reserved.
Serologic Diagnosis of Lyme Borreliosis by Using Enzyme-Linked
Immunosorbent Assays with Recombinant Antigens
*
Corresponding author. Mailing address: Department of
Entomology, The Connecticut Agricultural Experiment Station, P.O. Box 1106, New Haven, CT 06504-1106. Phone: (203) 974-8466. Fax: (203) 974-8502. E-mail:
louis.magnarelli{at}po.state.ct.us.
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