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. 2007 Jul 12:3:15.
doi: 10.1186/1746-6148-3-15.

Increased prevalence of Borrelia burgdorferi infections in Bernese Mountain Dogs: a possible breed predisposition

Bernhard Gerber  1 , Simone Eichenberger, Max M Wittenbrink, Claudia E Reusch
Affiliations

Increased prevalence of Borrelia burgdorferi infections in Bernese Mountain Dogs: a possible breed predisposition

Bernhard Gerber et al. BMC Vet Res. .

Abstract

Background: Glomerulonephritis in dogs has been associated with B. burgdorferi infections. In Bernese Mountain Dogs with glomerulonephritis antibodies against B. burgdorferi have been found in most dogs, raising the question if the breed is predisposed to infections with B. burgdorferi. The aim of this study was to determine the prevalence of antibodies against B. burgdorferi sensu lato in a well defined population of Bernese Mountain Dogs and to compare this prevalence with data from dogs of other breeds.

Results: 160 Bernese Mountain Dogs and 62 control dogs (large breed dogs with long hair) were included. All dogs were considered healthy according to a questionnaire filled out by the owner, complete blood count, chemistry panel, urinalysis and urine culture. Bernese Mountain Dogs and control dogs were kept in similar environments. Seroprevalence of B. burgdorferi was assessed by ELISA and Western blot and was 58% in Bernese Mountain Dogs compared to 15% in control dogs. This difference was significant. Neither antibodies against leptospires nor vaccination or hair coat color influenced the results.

Conclusion: The cause of the considerably higher prevalence of antibodies against B. burgdorferi in Bernese Mountain Dogs and it's consequences are not known. A breed predisposition can be suspected.

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Figures

Figure 1
Figure 1
Map of Switzerland with the geographical distribution of tested dogs. Origin of Bernese Mountain Dogs (red dots) and control dogs (blue dots).
Figure 2
Figure 2
B. burgdorferi ELISA results (optical density 405 nm) from Bernese Mountain Dogs and control dogs. OD = optical density, BMD = Bernese Mountain Dogs, B.b. = Borrelia burgdorferi
Figure 3
Figure 3
Number of positive bands depicted in a Western blot for B. burgdorferi from serum of Bernese Mountain Dogs and control dogs. BMD = Bernese Mountain Dogs, B.b. = Borrelia burgdorferi
See this image and copyright information in PMC

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