Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina

Autores
Margineda, Carlos Augusto; Diab, Santiago; Quiroga, Maria Alejandra; Lopez, Alfonso
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The paper describes an outbreak of Mycoplasma bovis-associated bronchopneumonia and otitis clinically associated with facial paralysis in feedlot steers in Argentina. Three of sixty-one feedlot animals from the same pen developed unilateral facial paral ysis primarily with ear dropping, droopy eyelids (eyelid ptosis), and head tilt. Postmortem exanimation revealed cranioventral consolidation of the lungs (bronchopneumonia) and the presence of abundant purulent exudate in the tympanic bulla (otitis). The affected lung had a nodular appearance. Histopathological examination of the middle and inner ear showed necrotizing, suppurative otitis, and bronchopneumonia with bronquiectasis compatible with M. bovis infection. Immunohistochemistry of the lung, and middle and inner ear revealed abundant M. bovis antigen. The ELISA tests revealed that the two animals showing facial paralysis had seroconverted for M. bovis. To our knowledge, these are the first reported cases of M. bovis otitis in Ar gentina. These findings should alert veterinarians and diagnosticians of the relevance of M. bovis as a cause of otitis and facial paralysis in cattle.
EEA Marcos Juárez
Fil: Margineda, Carlos Augusto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentina
Fil: Margineda, Carlos Augusto. Universidad Nacional de Rosario (UNR). Facultad de Ciencias Veterinarias. Cátedra de Enfermedades Infecciosas; Argentina
Fil: Diab, Santiago. Virginia-Maryland College of Veterinary Medicine. Department of Biomedical Sciences and Pathobiology; Estados Unidos
Fil: Quiroga, Maria Alejandra. Universidad Nacional de La Plata (UNLP). Facultad de Ciencias Veterinarias. Laboratorio de Patología Especial Veterinaria; Argentina
Fil: Lopez, Alfonso. University of Prince Edward Island. Atlantic Veterinary College. Department of Pathology and Microbiology; Canadá
Fuente
Brazilian Journal of Veterinary Pathology 16 (3) : 213-218 (November 2023)
Materia
Ganado Bovino
Parálisis
Otitis
Mycoplasma bovis
Argentina
Cattle
Paralysis
Otitis
Parálisis Facial
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/26001
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oai_identifier_str oai:localhost:20.500.12123/26001
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spelling Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in ArgentinaMargineda, Carlos AugustoDiab, SantiagoQuiroga, Maria AlejandraLopez, AlfonsoGanado BovinoParálisisOtitisMycoplasma bovisArgentinaCattleParalysisOtitisParálisis FacialThe paper describes an outbreak of Mycoplasma bovis-associated bronchopneumonia and otitis clinically associated with facial paralysis in feedlot steers in Argentina. Three of sixty-one feedlot animals from the same pen developed unilateral facial paral ysis primarily with ear dropping, droopy eyelids (eyelid ptosis), and head tilt. Postmortem exanimation revealed cranioventral consolidation of the lungs (bronchopneumonia) and the presence of abundant purulent exudate in the tympanic bulla (otitis). The affected lung had a nodular appearance. Histopathological examination of the middle and inner ear showed necrotizing, suppurative otitis, and bronchopneumonia with bronquiectasis compatible with M. bovis infection. Immunohistochemistry of the lung, and middle and inner ear revealed abundant M. bovis antigen. The ELISA tests revealed that the two animals showing facial paralysis had seroconverted for M. bovis. To our knowledge, these are the first reported cases of M. bovis otitis in Ar gentina. These findings should alert veterinarians and diagnosticians of the relevance of M. bovis as a cause of otitis and facial paralysis in cattle.EEA Marcos JuárezFil: Margineda, Carlos Augusto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; ArgentinaFil: Margineda, Carlos Augusto. Universidad Nacional de Rosario (UNR). Facultad de Ciencias Veterinarias. Cátedra de Enfermedades Infecciosas; ArgentinaFil: Diab, Santiago. Virginia-Maryland College of Veterinary Medicine. Department of Biomedical Sciences and Pathobiology; Estados UnidosFil: Quiroga, Maria Alejandra. Universidad Nacional de La Plata (UNLP). Facultad de Ciencias Veterinarias. Laboratorio de Patología Especial Veterinaria; ArgentinaFil: Lopez, Alfonso. University of Prince Edward Island. Atlantic Veterinary College. Department of Pathology and Microbiology; CanadáAssociação Brasileira de Patologia Veterinária (ABPV)2026-04-29T13:42:21Z2026-04-29T13:42:21Z2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/260011983-0246https://10.24070/bjvp.1983-0246.v16i3p213-218Brazilian Journal of Veterinary Pathology 16 (3) : 213-218 (November 2023)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-05-14T10:43:33Zoai:localhost:20.500.12123/26001instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-05-14 10:43:34.187INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
title Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
spellingShingle Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
Margineda, Carlos Augusto
Ganado Bovino
Parálisis
Otitis
Mycoplasma bovis
Argentina
Cattle
Paralysis
Otitis
Parálisis Facial
title_short Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
title_full Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
title_fullStr Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
title_full_unstemmed Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
title_sort Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina
dc.creator.none.fl_str_mv Margineda, Carlos Augusto
Diab, Santiago
Quiroga, Maria Alejandra
Lopez, Alfonso
author Margineda, Carlos Augusto
author_facet Margineda, Carlos Augusto
Diab, Santiago
Quiroga, Maria Alejandra
Lopez, Alfonso
author_role author
author2 Diab, Santiago
Quiroga, Maria Alejandra
Lopez, Alfonso
author2_role author
author
author
dc.subject.none.fl_str_mv Ganado Bovino
Parálisis
Otitis
Mycoplasma bovis
Argentina
Cattle
Paralysis
Otitis
Parálisis Facial
topic Ganado Bovino
Parálisis
Otitis
Mycoplasma bovis
Argentina
Cattle
Paralysis
Otitis
Parálisis Facial
dc.description.none.fl_txt_mv The paper describes an outbreak of Mycoplasma bovis-associated bronchopneumonia and otitis clinically associated with facial paralysis in feedlot steers in Argentina. Three of sixty-one feedlot animals from the same pen developed unilateral facial paral ysis primarily with ear dropping, droopy eyelids (eyelid ptosis), and head tilt. Postmortem exanimation revealed cranioventral consolidation of the lungs (bronchopneumonia) and the presence of abundant purulent exudate in the tympanic bulla (otitis). The affected lung had a nodular appearance. Histopathological examination of the middle and inner ear showed necrotizing, suppurative otitis, and bronchopneumonia with bronquiectasis compatible with M. bovis infection. Immunohistochemistry of the lung, and middle and inner ear revealed abundant M. bovis antigen. The ELISA tests revealed that the two animals showing facial paralysis had seroconverted for M. bovis. To our knowledge, these are the first reported cases of M. bovis otitis in Ar gentina. These findings should alert veterinarians and diagnosticians of the relevance of M. bovis as a cause of otitis and facial paralysis in cattle.
EEA Marcos Juárez
Fil: Margineda, Carlos Augusto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentina
Fil: Margineda, Carlos Augusto. Universidad Nacional de Rosario (UNR). Facultad de Ciencias Veterinarias. Cátedra de Enfermedades Infecciosas; Argentina
Fil: Diab, Santiago. Virginia-Maryland College of Veterinary Medicine. Department of Biomedical Sciences and Pathobiology; Estados Unidos
Fil: Quiroga, Maria Alejandra. Universidad Nacional de La Plata (UNLP). Facultad de Ciencias Veterinarias. Laboratorio de Patología Especial Veterinaria; Argentina
Fil: Lopez, Alfonso. University of Prince Edward Island. Atlantic Veterinary College. Department of Pathology and Microbiology; Canadá
description The paper describes an outbreak of Mycoplasma bovis-associated bronchopneumonia and otitis clinically associated with facial paralysis in feedlot steers in Argentina. Three of sixty-one feedlot animals from the same pen developed unilateral facial paral ysis primarily with ear dropping, droopy eyelids (eyelid ptosis), and head tilt. Postmortem exanimation revealed cranioventral consolidation of the lungs (bronchopneumonia) and the presence of abundant purulent exudate in the tympanic bulla (otitis). The affected lung had a nodular appearance. Histopathological examination of the middle and inner ear showed necrotizing, suppurative otitis, and bronchopneumonia with bronquiectasis compatible with M. bovis infection. Immunohistochemistry of the lung, and middle and inner ear revealed abundant M. bovis antigen. The ELISA tests revealed that the two animals showing facial paralysis had seroconverted for M. bovis. To our knowledge, these are the first reported cases of M. bovis otitis in Ar gentina. These findings should alert veterinarians and diagnosticians of the relevance of M. bovis as a cause of otitis and facial paralysis in cattle.
publishDate 2023
dc.date.none.fl_str_mv 2023-11
2026-04-29T13:42:21Z
2026-04-29T13:42:21Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/26001
1983-0246
https://10.24070/bjvp.1983-0246.v16i3p213-218
url http://hdl.handle.net/20.500.12123/26001
https://10.24070/bjvp.1983-0246.v16i3p213-218
identifier_str_mv 1983-0246
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Patologia Veterinária (ABPV)
publisher.none.fl_str_mv Associação Brasileira de Patologia Veterinária (ABPV)
dc.source.none.fl_str_mv Brazilian Journal of Veterinary Pathology 16 (3) : 213-218 (November 2023)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
_version_ 1865182003288080384
score 12.604774

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