Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil

Brucellosis caused by Brucella abortus infection is a contagious zoonotic disease that causes abortions in cows, as well as joint and reproductive alterations in bulls. This study reports that eight (1.92%) out of a total of 469 aborted bovine fetuses analysed in a time frame of nine years were caus...

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Autores principales:	Antoniassi,NAB, Juffo,GD, Pescador,CA, Corbellini,LG, Sonne,L, Gomes,MJP, Nakazato,L, Driemeier,D
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2016
Materias:	brucellosis diagnosis cattle bovine fetuses
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2016000100006
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spelling	oai:scielo:S0301-732X20160001000062016-07-29Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern BrazilAntoniassi,NABJuffo,GDPescador,CACorbellini,LGSonne,LGomes,MJPNakazato,LDriemeier,D brucellosis diagnosis cattle bovine fetuses Brucellosis caused by Brucella abortus infection is a contagious zoonotic disease that causes abortions in cows, as well as joint and reproductive alterations in bulls. This study reports that eight (1.92%) out of a total of 469 aborted bovine fetuses analysed in a time frame of nine years were caused by B. abortus infection. The diagnosis was based on macroscopic, histological, microbiological, serological, immunohistochemical, and molecular findings. The gestational age of the fetuses studied ranged from 6 to 9 months. The main gross findings were purulent discharge from the nasal cavity, trachea and bronchi; pleural and pericardial fibrin deposits; and non-collapsed lungs with white spots in the parenchyma, and red areas in the apical lobes. Intercotyledonary areas of three placentas examined exhibited reddened areas, and the cotyledons exhibited well-defined, yellowish-white round areas with thickened walls on their surface. Microscopically, the most frequently observed lesions were necrosuppurative bronchopneumonia, interstitial pneumonia, and necrosuppurative placentitis with areas of vasculitis, mineralization, and thrombosis. Brucella abortus was isolated from fetal tissues of seven of the nine cases investigated. Immunohistochemical tests were positive in four cases, and PCR detected B. abortus genetic material in three cases. Infection by B. abortus should be considered a possible cause of abortion in cattle in southern Brazil.info:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.48 n.1 20162016-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2016000100006en10.4067/S0301-732X2016000100006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	brucellosis diagnosis cattle bovine fetuses
spellingShingle	brucellosis diagnosis cattle bovine fetuses Antoniassi,NAB Juffo,GD Pescador,CA Corbellini,LG Sonne,L Gomes,MJP Nakazato,L Driemeier,D Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
description	Brucellosis caused by Brucella abortus infection is a contagious zoonotic disease that causes abortions in cows, as well as joint and reproductive alterations in bulls. This study reports that eight (1.92%) out of a total of 469 aborted bovine fetuses analysed in a time frame of nine years were caused by B. abortus infection. The diagnosis was based on macroscopic, histological, microbiological, serological, immunohistochemical, and molecular findings. The gestational age of the fetuses studied ranged from 6 to 9 months. The main gross findings were purulent discharge from the nasal cavity, trachea and bronchi; pleural and pericardial fibrin deposits; and non-collapsed lungs with white spots in the parenchyma, and red areas in the apical lobes. Intercotyledonary areas of three placentas examined exhibited reddened areas, and the cotyledons exhibited well-defined, yellowish-white round areas with thickened walls on their surface. Microscopically, the most frequently observed lesions were necrosuppurative bronchopneumonia, interstitial pneumonia, and necrosuppurative placentitis with areas of vasculitis, mineralization, and thrombosis. Brucella abortus was isolated from fetal tissues of seven of the nine cases investigated. Immunohistochemical tests were positive in four cases, and PCR detected B. abortus genetic material in three cases. Infection by B. abortus should be considered a possible cause of abortion in cattle in southern Brazil.
author	Antoniassi,NAB Juffo,GD Pescador,CA Corbellini,LG Sonne,L Gomes,MJP Nakazato,L Driemeier,D
author_facet	Antoniassi,NAB Juffo,GD Pescador,CA Corbellini,LG Sonne,L Gomes,MJP Nakazato,L Driemeier,D
author_sort	Antoniassi,NAB
title	Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
title_short	Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
title_full	Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
title_fullStr	Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
title_full_unstemmed	Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil
title_sort	ocurrence and caracterization of bovine abortion caused by brucella abortus infection in southern brazil
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2016000100006
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Ocurrence and caracterization of bovine abortion caused by Brucella abortus infection in southern Brazil

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