Genotypic diversity of Salmonella ser. Abortusequi isolates from Argentina
| Autor: | C.P. Bustos, Nora Guida, A R Moreira, A Ivanissevich, M Herrera, M Moroni, M.I. Caffer, Pablo Chacana |
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| Rok vydání: | 2018 |
| Předmět: |
Serotype
Salmonella Genotype 040301 veterinary sciences Argentina Virulence medicine.disease_cause Microbiology 0403 veterinary science Plasmid medicine Animals Horses Gel electrophoresis Salmonella Infections Animal biology 0402 animal and dairy science Outbreak Salmonella enterica 04 agricultural and veterinary sciences General Medicine biology.organism_classification 040201 dairy & animal science Horse Diseases Transcriptome |
| Zdroj: | Equine veterinary journalReferences. 52(1) |
| ISSN: | 2042-3306 |
| Popis: | Background Salmonella enterica subsp. enterica serovar Abortusequi (S. Abortusequi) is a serotype restricted to equines, which produces abortion outbreaks. Nowadays the disease is being reported in different countries including Argentina thus generating an important impact in the equine industry. Molecular characterization of the 95 kb virulence plasmid and the spvC gene of S. Abortusequi demonstrated their importance in the pathogenicity of the serotype. In the last decades, high clonality of S. Abortusequi was identified in Japan, Mongolia and Croatia. Objectives The aim of this work was to characterize S. Abortusequi isolates obtained in Argentina between 2011 and 2016 by virulence-gene profiling and pulsed-field gel electrophoresis. Study design Case report. Methods S. Abortusequi isolates were studied by virulence-gene profiling and pulsed-field gel electrophoresis. Results Four virulence profiles and nine pulsed-field gel electrophoresis pulsotypes were identified among the 27 isolates included in the study. Different strains were found in the same outbreak and/or farm suggesting the presence of different sources of infection or mutation of isolates. Main limitations The number of related and nonrelated strains. More isolates may be necessary for a more intensive study. Conclusions Most strains presented the same virulence profile, being positive for all the studied genes except gipA and sopE1, which are involved in intestinal virulence. Only few isolates showed different results in the same outbreak or farm. Unlike other studies, our results demonstrate a considerable diversity of S. Abortusequi pulsed-field gel electrophoresis pulsotypes, which suggests that different sources of infection may be involved within the same outbreak. |
| Databáze: | OpenAIRE |
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