IAI FigSearch
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wang, G.
Right arrow Articles by Schwartz, I.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wang, G.
Right arrow Articles by Schwartz, I.

 Previous Article  |  Next Article 

Infection and Immunity, July 2001, p. 4303-4312, Vol. 69, No. 7
0019-9567/01/$04.00+0   DOI: 10.1128/IAI.69.7.4303-4312.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Impact of Genotypic Variation of Borrelia burgdorferi Sensu Stricto on Kinetics of Dissemination and Severity of Disease in C3H/HeJ Mice

Guiqing Wang,1 Caroline Ojaimi,1 Radha Iyer,1 Victoria Saksenberg,2 Steve A. McClain,2 Gary P. Wormser,3 and Ira Schwartz1,3,*

Department of Biochemistry and Molecular Biology1 and Division of Infectious Diseases,3 Department of Medicine, New York Medical College, Valhalla, New York 10595, and Department of Pathology, Montefiore Medical Center, Bronx, New York 104672

Received 13 December 2000/Returned for modification 16 February 2001/Accepted 29 March 2001

Various genotypes of Borrelia burgdorferi sensu stricto have been previously identified among a large collection of isolates cultured from patients with Lyme disease in the United States. Furthermore, association of specific genotypes with hematogenous dissemination early in the disease course has been observed. The present study assessed kinetics of spirochete dissemination and disease severity in C3H/HeJ mice infected with two different genotypes of B. burgdorferi. Spirochete load in plasma and ear and other tissue samples of infected mice was measured by quantitative PCR, and these data were compared to those obtained by culture and histopathologic analysis. In mice infected with isolate BL206 (a type 1 strain), the peak number of spirochetes was observed in plasma between day 4 and 7, in heart and ear tissue on day 14, and in joints on day 28 postinoculation. There was a correlation between the peak number of spirochetes in plasma on day 4 or 7 and that in ear biopsy and joint specimens on day 14. By contrast, spirochete burdens in plasma of mice infected with isolate B356 (a type 3 strain) were 16- and 5-fold lower than those of BL206-infected mice on days 7 and 14 of infection, respectively. Similarly, approximately 6- and 13-fold fewer spirochetes were detected in the heart tissues of B356-infected mice compared to BL206-infected mice. Histopathologically, severe arthritis and aortitis were noted only in mice infected with isolate BL206. Spirochete dissemination and disease severity vary significantly in mice infected with distinct genotypes of B. burgdorferi, suggesting that genotypic differences in the infecting spirochetes play a key role in the pathogenesis and development of clinical disease.


* Corresponding author. Mailing address: Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595. Phone: (914) 594-4658. Fax: (914) 594-3455. E-mail: schwartz{at}nymc.edu.


Infection and Immunity, July 2001, p. 4303-4312, Vol. 69, No. 7
0019-9567/01/$04.00+0   DOI: 10.1128/IAI.69.7.4303-4312.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.



This article has been cited by other articles:




Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. J. Virol. Eukaryot. Cell
Microbiol. Mol. Biol. Rev. Clin. Vaccine Immunol. All ASM Journals

Copyright © 2001 by the American Society for Microbiology. All rights reserved.