NDLI: Host Adaptation of Pigeon Isolates of Salmonella enterica subsp. enterica Serovar Typhimurium Variant Copenhagen Phage Type 99 Is Associated with Enhanced Macrophage Cytotoxicity

Content Provider	PubMed Central
Author	Frank, Pasmans Van Immerseel, Filip Marc, Heyndrickx Martel, An Godard, Claudine Christa, Wildemauwe Richard, Ducatelle Haesebrouck, Freddy
Copyright Year	2003
Abstract	Phage type 99 of Salmonella enterica subsp. enterica serovar Typhimurium variant Copenhagen strains isolated from pigeons were examined for the presence of genotypic and phenotypic characteristics. The pulsed-field gel electrophoresis patterns obtained with XbaI and BlnI from 38 pigeon strains were compared with those obtained from 89 porcine, poultry, and human strains of variant Copenhagen. Identical patterns with XbaI and four closely related patterns with BlnI were obtained with the pigeon strains, whereas 16 XbaI patterns were found with the other strains. The XbaI patterns of the pigeon strains showed a low genetic similarity to the patterns of the porcine, poultry, and human strains and invariably showed a low-molecular-weight band that was absent in the majority of the other strains. The virulence genes shdA, spvR, pefA, sopE, and spvB were uniformly present in six pigeon isolates representing the genetic diversity found with BlnI. These six pigeon-derived strains were highly cytotoxic for pigeon macrophages compared to three porcine strains. After experimental infection of pigeons with a pigeon strain, clinical symptoms, fecal shedding, and colonization of internal organs were more pronounced than those after infection with a porcine strain. These data suggest that the phage type 99 strains used in this study are highly adapted to pigeons and should be classified as a host-restricted lineage of the serovar Typhimurium.
Related Links	http://dx.doi.org/10.1128/iai.71.10.6068-6074.2003
Ending Page	6074
Page Count	7
Starting Page	6068
File Format	PDF
ISSN	00199567
e-ISSN	10985522
Journal	Infection and Immunity
Issue Number	10
Volume Number	71
Language	English
Publisher	American Society for Microbiology
Publisher Date	2003-10-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Immunology Microbiology Parasitology Infectious Diseases Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Parasitology Immunology Microbiology

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