Within-host evolution of Brucella canis during a canine brucellosis outbreak in a kennel

Miklós Gyuranecz, Brandy D. Rannals, Christina A. Allen, Szilárd Jánosi, Paul S Keim, Jeffrey T Foster

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background: Little is currently known about Brucella evolution within the host during infection. The current study is the first to employ fine-scale genotyping on an isolate collection derived from a Brucella canis outbreak. Eight isolates of B. canis, cultured from different tissues of three dogs (female, stud dog, puppy of another female) from a single kennel over three months were genetically characterized with a 15-marker multi-locus, variable-number tandem repeat (VNTR) analysis (MLVA) to assess the genetic relatedness of isolates and potential rapid mutational changes.Results: MLVA discriminated among the otherwise indistinguishable isolates from different animals and from isolates collected at different time points within each host, with different VNTR alleles being detected at multiple dates and tissue sites. We suspect that all isolates cultured from the female, puppy, and stud dogs originated from the same strain, with subsequent rapid in vivo mutations. However, high mutation rates and apparent in several of the loci prevented making definitive epidemiological relationships among isolates.Conclusions: This investigation highlights the rapid in vivo genetic mutations of several VNTRs of B. canis over a short time period in the host and the emergence of alternate alleles. However, this work also suggests the challenges of using highly mutable VNTRs to infer epidemiological relationships of strains within a short duration outbreak.

Original languageEnglish (US)
Article number76
JournalBMC Veterinary Research
Volume9
DOIs
StatePublished - Apr 12 2013

Fingerprint

Brucella canis
Brucella melitensis biovar Canis
Brucellosis
minisatellite repeats
brucellosis
Disease Outbreaks
Canidae
Minisatellite Repeats
Dogs
dogs
puppies
Alleles
mutation
Brucella
Mutation
Mutation Rate
alleles
loci
genotyping
genetic relationships

Keywords

  • Brucella canis
  • Brucellosis
  • Evolution
  • MLVA
  • VNTR

ASJC Scopus subject areas

  • veterinary(all)
  • Medicine(all)

Cite this

Within-host evolution of Brucella canis during a canine brucellosis outbreak in a kennel. / Gyuranecz, Miklós; Rannals, Brandy D.; Allen, Christina A.; Jánosi, Szilárd; Keim, Paul S; Foster, Jeffrey T.

In: BMC Veterinary Research, Vol. 9, 76, 12.04.2013.

Research output: Contribution to journalArticle

Gyuranecz, Miklós ; Rannals, Brandy D. ; Allen, Christina A. ; Jánosi, Szilárd ; Keim, Paul S ; Foster, Jeffrey T. / Within-host evolution of Brucella canis during a canine brucellosis outbreak in a kennel. In: BMC Veterinary Research. 2013 ; Vol. 9.
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