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Article Dans Une Revue Veterinary Research Année : 2015

HtpG contributes to Salmonella Typhimurium intestinal persistence in pigs

Elin Verbrugghe
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Alexander van Parys
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Bregje Leyman
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Filip Boyen
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Freddy Haesebrouck
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Frank Pasmans
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Résumé

AbstractSalmonellaenterica subspecies enterica serovar Typhimurium (Salmonella Typhimurium) contamination of pork, is one of the major sources of human salmonellosis. The bacterium is able to persist and hide in asymptomatic carrier animals, generating a reservoir for Salmonella transmission to other animals and humans. Mechanisms involved in Salmonella persistence in pigs remain poorly understood. In the present study, we demonstrate that the SalmonellahtpG gene, encoding a homologue of the eukaryotic heat shock protein 90, contributes to Salmonella Typhimurium persistence in intestine-associated tissues of pigs, but not in the tonsils. HtpG does not seem to play an important role during the acute phase of infection. The contribution to persistence was shown to be associated with htpG-dependent Salmonella invasion and survival in porcine enterocytes and macrophages. These results reveal the role of HtpG as a virulence factor contributing to Salmonella persistence in pigs.
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Dates et versions

hal-01341428 , version 1 (04-07-2016)

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Elin Verbrugghe, Alexander van Parys, Bregje Leyman, Filip Boyen, Freddy Haesebrouck, et al.. HtpG contributes to Salmonella Typhimurium intestinal persistence in pigs. Veterinary Research, 2015, 46 (1), pp.118. ⟨10.1186/s13567-015-0261-5⟩. ⟨hal-01341428⟩

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