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Open Access Highly Accessed Research

Ability to cause erythema migrans differs between Borrelia burgdorferi sensu lato isolates

Ellen Tijsse-Klasen1*, Nenad Pandak2*, Paul Hengeveld1, Katsuhisa Takumi1, Marion PG Koopmans13 and Hein Sprong1

Author Affiliations

1 Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720BA, Bilthoven, Netherlands

2 Department of Infectious Diseases, General Hospital “Dr. Josip Bencevic”, Slavonski Brod, Croatia

3 Department of Virology, Erasmus Medical Centre, Rotterdam, Netherlands

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Parasites & Vectors 2013, 6:23  doi:10.1186/1756-3305-6-23

Published: 22 January 2013

Abstract

Background

Lyme borreliosis is a tick-borne disease caused by Borrelia burgdorferi sensu lato. The variety of characteristic and non-specific clinical manifestations is partially explained by its genetic diversity. We investigated the ability of B. burgdorferi sl isolates to cause erythema migrans.

Methods

The genetic constellation of isolates from ticks was compared to isolates found in erythema migrans. PCR and sequence analysis was performed on the plasmid-encoded ospC and the chromosomal 5S-23S rDNA spacer region (IGS).

Results

Seven different B. burgdorferi sl genospecies were identified in 152 borrelia isolates from ticks and erythema migrans biopsies. B afzelii (51%) and B. garinii (27%) were the most common in ticks. From the 44 sequences obtained from erythema migrans samples 42 were B. afzelii, one B. garinii and one B. bavariensis. Significant associations with erythema migrans formation were found for four IGS and two ospC types. Five from 45 ospC types were associated with more than one genospecies.

Conclusions

B. burgdorferi sl isolates differ in their propensity to cause erythema migrans. These differences were also found within genospecies. In other words, although B. afzelii was mostly associated with erythema migrans, some B. afzelii isolates had a low ability to cause erythema migrans. Our data further support the occurrence of plasmid exchange between borrelia genospecies under natural conditions.

Keywords:
Lyme borreliosis; Erythema migrans; Molecular epidemiology; Virulence marker