Your browser doesn't support javascript.
loading
Isolation of vapB-positive Rhodococcus equi from submaxillary lymph nodes with or without granulomatous lesions in growing-finishing pigs in Japan.
Matsuoka, Michinori; Kobayashi, Ayumi; Matsuoka, Misa; Honda, Yayoi; Hashimoto, Riri; Sasaki, Yukako; Kakuda, Tsutomu; Suzuki, Yasunori; Takai, Shinji.
Afiliación
  • Matsuoka M; Takaoka Health and Welfare Center, Toyama, Japan.
  • Kobayashi A; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Matsuoka M; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Honda Y; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Hashimoto R; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Sasaki Y; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Kakuda T; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Suzuki Y; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
  • Takai S; Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University, Aomori, Japan.
J Vet Med Sci ; 86(6): 600-605, 2024 Jun 01.
Article en En | MEDLINE | ID: mdl-38631887
ABSTRACT
To investigate the etiological role of vapB-positive Rhodococcus equi in pigs, R. equi was isolated from the submaxillary lymph nodes with or without macroscopically detectable lesions of apparently healthy growing-finishing pigs at a slaughterhouse in Toyama Prefecture, Japan. R. equi was isolated from 57 (24.6%) of 232 pigs with macroscopically detectable lymph node lesions, and 56 (98.2%) of the 57 isolates were vapB-positive. R. equi was isolated from 10 (2.4%) of 420 pigs without lymph node lesions, and six (60%) of the 10 isolates were vapB-positive. Plasmid DNA was isolated from the 62 vapB-positive isolates and digested with EcoRI and NsiI to obtain the plasmid profile. Fifty-two (83.9%), three (4.8%), and four (6.5%) isolates contained pVAPB subtypes 1, 2, and 3, respectively, while the remaining three isolates were of pVAPB subtypes 9, 13, and 14, respectively. Twelve specimens from lymph nodes with macroscopically detectable lesions were randomly selected for histopathological staining. Granulomatous lesions resembling tuberculosis were found in 11 of the 12 specimens, and the remaining specimen showed typical foci of malakoplakia in the lymph node. The isolation rates of R. equi and vapB-positive R. equi from lymph nodes with macroscopically detectable lesions were significantly higher (P<0.05) than those of lymph nodes without lesions, suggesting an etiologic association between vapB-positive R. equi and macroscopically detectable granulomatous lesions in porcine submaxillary lymph nodes. Previous reports on the prevalence of vapB-positive R. equi in pigs are reviewed and discussed.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Porcinos / Infecciones por Actinomycetales / Rhodococcus equi / Ganglios Linfáticos Límite: Animals País/Región como asunto: Asia Idioma: En Revista: J Vet Med Sci Asunto de la revista: MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Japón
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de los Porcinos / Infecciones por Actinomycetales / Rhodococcus equi / Ganglios Linfáticos Límite: Animals País/Región como asunto: Asia Idioma: En Revista: J Vet Med Sci Asunto de la revista: MEDICINA VETERINARIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Japón