Abstract
An in vitro borreliacidal assay that accurately reflects the levels of protective antibody determined by passive transfer of immunity studies was developed. Borreliacidal antibody in sera obtained from normal hamsters infected with Borrelia burgdorferi was readily detected. When immune serum containing complement was incubated with B. burgdorferi organisms, spirochetes were killed within 2 h. Treating immune serum with anti-hamster immunoglobulin G abrogated the borreliacidal activity. Killing of B. burgdorferi in serum was detected 1 week after infection; it peaked at week 3 and gradually declined. Relatively high levels of borreliacidal antibody were found, especially in week 3 immune serum, which could be diluted 1,280-fold. The decrease in borreliacidal antibody after infection may account for occurrences of reinfection and the remitting course of Lyme disease.
MeSH Terms
Animals
Antibodies, Bacterial/blood,immunology
Antibody Formation/immunology
Borrelia burgdorferi
Borrelia burgdorferi Group/growth & development,immunology,ultrastructure
Cricetinae
Immunization, Passive
Kinetics
Lyme Disease/immunology
Methods
Microscopy, Electron
Chemicals
Antibodies, Bacterial
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Lovrich S D
Department of Medical Microbiology and Immunology, University of Wisconsin-Madison 53706.
Callister S M
Schmitz J L
Alder J D
Schell R F
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