Bronchopneumonia in wild boar (Sus scrofa) caused by Rhodococcus equi carrying the VapB type 8 plasmid
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Data
2013-03-27
Autores
De Vargas, Agueda Castagna
Monego, Fernanda
Gressler, Letícia Trevisan
De Avila Botton, Sônia
Lazzari, Andrea Maria
Da Costa, Mateus Matiuzzi
Ecco, Roselene
Ribeiro, Márcio Garcia [UNESP]
Lara, Gustavo Henrique Batista [UNESP]
Takai, Shinji
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Resumo
Background: Rhodococcus equi is associated with pyogranulomatous infections, especially in foals, and this bacterium has also emerged as a pathogen for humans, particularly immunocompromised patients. R. equi infections in pigs, wild boar (Sus scrofa) and humans are mainly due to strains carrying the intermediate virulence (VapB) plasmid. In Brazil, R. equi carrying the VapB type 8 plasmid is the most common type recovered from humans co-infected with the human immunodeficiency virus (HIV). R. equi infection in pigs and wild boar is restricted predominantly to the lymphatic system, without any reports of pulmonary manifestations. Findings. This report describes the microbiological and histopathological findings, and molecular characterization of R. equi in two bronchopneumonia cases in wild boar using PCR and plasmid profile analysis by digestion with restriction endonucleases. The histological findings were suggestive of pyogranulomatous infection, and the plasmid profile of both R. equi isolates enabled the characterization of the strains as VapB type 8. Conclusions: This is the first report of bronchopneumonia in wild boar due to R. equi. The detection of the VapB type 8 plasmid in R. equi isolates emphasize that wild boar may be a potential source of pathogenic R. equi strains for humans. © 2013 de Vargas et al.; licensee BioMed Central Ltd.
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Bronchopneumonia, Rhodococcus equi, VapB plasmid, Wild boar (Sus scrofa), Bacteria (microorganisms), Human immunodeficiency virus, Suidae, Sus scrofa
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BMC Research Notes, v. 6, n. 1, 2013.