Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 10 de 10
Filtrar
Mais filtros

Tipo de documento
Intervalo de ano de publicação
1.
Braz. J. Vet. Pathol. ; 13(3): 602-608, nov. 2020. ilus
Artigo em Inglês | VETINDEX | ID: vti-31330

Resumo

Osteosarcoma is a malignant primary tumor of the bone, which is considered rare in birds. This report describes an osteoblastic osteosarcoma in a scarlet macaw (Ara macao), which was apathetic with progressive weight loss, and had a tumor in the distal portion of the femur and proximal tibiotarsus with ulcerated pododermatitis in the contralateral limb. Euthanasia was elected due to poor diagnosis after radiographic and cytological examination. Histopathology and immunohistochemistry were performed and confirmed the diagnosis of an osteoblastic osteosarcoma with hepatic and pulmonary metastases.(AU)


Assuntos
Animais , Psittaciformes/anormalidades , Osteossarcoma/classificação , Osteossarcoma/veterinária , Metástase Neoplásica , Animais de Zoológico
2.
Braz. j. vet. pathol ; 13(3): 602-608, nov. 2020. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469773

Resumo

Osteosarcoma is a malignant primary tumor of the bone, which is considered rare in birds. This report describes an osteoblastic osteosarcoma in a scarlet macaw (Ara macao), which was apathetic with progressive weight loss, and had a tumor in the distal portion of the femur and proximal tibiotarsus with ulcerated pododermatitis in the contralateral limb. Euthanasia was elected due to poor diagnosis after radiographic and cytological examination. Histopathology and immunohistochemistry were performed and confirmed the diagnosis of an osteoblastic osteosarcoma with hepatic and pulmonary metastases.


Assuntos
Animais , Metástase Neoplásica , Osteossarcoma/classificação , Osteossarcoma/veterinária , Psittaciformes/anormalidades , Animais de Zoológico
3.
Pesqui. vet. bras ; 40(2): 88-96, Feb. 2020. tab, graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1098441

Resumo

Brucella ovis causes economic and reproductive losses in sheep herds. The goal of this study was to characterize infection with B. ovis field isolates in a murine model, and to evaluate protection induced by the candidate vaccine strain B. ovis ΔabcBA in mice challenged with these field isolates. B. ovis field strains were able to colonize and cause lesions in the liver and spleen of infected mice. After an initial screening, two strains were selected for further characterization (B. ovis 94 AV and B. ovis 266 L). Both strains had in vitro growth kinetics that was similar to that of the reference strain B. ovis ATCC 25840. Vaccination with B. ovis ΔabcBA encapsulated with 1% alginate was protective against the challenge with field strains, with the following protection indexes: 0.751, 1.736, and 2.746, for mice challenged with B. ovis ATCC25840, B. ovis 94 AV, and B. ovis 266 L, respectively. In conclusion, these results demonstrated that B. ovis field strains were capable of infecting and inducing lesions in experimentally infected mice. The attenuated vaccine strain B. ovis ΔabcBA induced protection in mice challenged with different B. ovis field isolates, resulting in higher protection indexes against more pathogenic strains.(AU)


Brucella ovis é responsável por perdas econômicas e reprodutivas em rebanhos ovinos. O objetivo deste trabalho foi caracterizar a infecção com as cepas isoladas de campo de B. ovis em modelo murino e avaliar a eficiência vacinal da mutante B. ovis ΔabcAB para proteção contra desafio com as cepas isoladas de campo. Foram utilizadas sete cepas isoladas de campo foram capazes de colonizar e provocar lesões no fígado e no baço de camundongos após sete dias pós-infecção. Após triagem, duas cepas foram selecionadas para a melhor caracterização (B. ovis 94 AV and B. ovis 266L). Ambas apresentaram crescimento em placa de cultivo semelhante ao da cepa de referência B. ovis ATCC 25840. A vacinação com a cepa de Brucella ovis ΔabcBA encapsulada com alginato a 1% foi capaz de proteger camundongos desafiados com as cepas isoladas de campo, com os seguintes índices de proteção: 0,751, 1,736 e 2,746, para camundongos desafiados com B. ovis ATCC 25840, B. ovis 94 AV e B. ovis 266 L, respectivamente. Estes resultados demonstraram que as cepas isoladas de campo de B. ovis são capazes de infectar e induzir lesão em camundongos experimentalmente infectados. O uso da cepa mutante atenuada B. ovis ΔabcBA para vacinação de fêmeas C57BL/6 desafiados com diferentes cepas de B. ovis induziu proteção nos camundongos desafiados com diferentes cepas de B. ovis. Deste modo, mostrando-se eficiente na proteção das cepas de campo de B. ovis.(AU)


Assuntos
Animais , Camundongos , Brucelose/prevenção & controle , Ovinos/microbiologia , Vacinas Bacterianas/imunologia , Brucella ovis/isolamento & purificação , Brucella ovis/imunologia , Brucella ovis/patogenicidade
4.
Pesqui. vet. bras ; 40(2): 88-96, fev. 2020. tab, graf
Artigo em Inglês | VETINDEX | ID: vti-30468

Resumo

Brucella ovis causes economic and reproductive losses in sheep herds. The goal of this study was to characterize infection with B. ovis field isolates in a murine model, and to evaluate protection induced by the candidate vaccine strain B. ovis ΔabcBA in mice challenged with these field isolates. B. ovis field strains were able to colonize and cause lesions in the liver and spleen of infected mice. After an initial screening, two strains were selected for further characterization (B. ovis 94 AV and B. ovis 266 L). Both strains had in vitro growth kinetics that was similar to that of the reference strain B. ovis ATCC 25840. Vaccination with B. ovis ΔabcBA encapsulated with 1% alginate was protective against the challenge with field strains, with the following protection indexes: 0.751, 1.736, and 2.746, for mice challenged with B. ovis ATCC25840, B. ovis 94 AV, and B. ovis 266 L, respectively. In conclusion, these results demonstrated that B. ovis field strains were capable of infecting and inducing lesions in experimentally infected mice. The attenuated vaccine strain B. ovis ΔabcBA induced protection in mice challenged with different B. ovis field isolates, resulting in higher protection indexes against more pathogenic strains.(AU)


Brucella ovis é responsável por perdas econômicas e reprodutivas em rebanhos ovinos. O objetivo deste trabalho foi caracterizar a infecção com as cepas isoladas de campo de B. ovis em modelo murino e avaliar a eficiência vacinal da mutante B. ovis ΔabcAB para proteção contra desafio com as cepas isoladas de campo. Foram utilizadas sete cepas isoladas de campo foram capazes de colonizar e provocar lesões no fígado e no baço de camundongos após sete dias pós-infecção. Após triagem, duas cepas foram selecionadas para a melhor caracterização (B. ovis 94 AV and B. ovis 266L). Ambas apresentaram crescimento em placa de cultivo semelhante ao da cepa de referência B. ovis ATCC 25840. A vacinação com a cepa de Brucella ovis ΔabcBA encapsulada com alginato a 1% foi capaz de proteger camundongos desafiados com as cepas isoladas de campo, com os seguintes índices de proteção: 0,751, 1,736 e 2,746, para camundongos desafiados com B. ovis ATCC 25840, B. ovis 94 AV e B. ovis 266 L, respectivamente. Estes resultados demonstraram que as cepas isoladas de campo de B. ovis são capazes de infectar e induzir lesão em camundongos experimentalmente infectados. O uso da cepa mutante atenuada B. ovis ΔabcBA para vacinação de fêmeas C57BL/6 desafiados com diferentes cepas de B. ovis induziu proteção nos camundongos desafiados com diferentes cepas de B. ovis. Deste modo, mostrando-se eficiente na proteção das cepas de campo de B. ovis.(AU)


Assuntos
Animais , Camundongos , Brucelose/prevenção & controle , Ovinos/microbiologia , Vacinas Bacterianas/imunologia , Brucella ovis/isolamento & purificação , Brucella ovis/imunologia , Brucella ovis/patogenicidade
5.
Braz. J. Vet. Pathol. ; 13(1): 53-56, Mar. 2020. ilus
Artigo em Inglês | VETINDEX | ID: vti-28830

Resumo

Cholangiocarcinomas are neoplasms originating from the biliary epithelium. This report describes the gross, microscopic, and immunohistochemical findings in a case of cholangiocarcinoma in an Australian goose (Cereopsisnovaehollandiae). The animal had cachexia and ascites. The liver and gallbladder had cystic masses that was diagnosed as acholangiocarcinoma.(AU)


Assuntos
Animais , Gansos , Colangiocarcinoma/patologia , Colangiocarcinoma/veterinária , Neoplasias dos Ductos Biliares/patologia , Neoplasias dos Ductos Biliares/veterinária
6.
Braz. j. vet. pathol ; 13(1): 53-56, Mar. 2020. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469755

Resumo

Cholangiocarcinomas are neoplasms originating from the biliary epithelium. This report describes the gross, microscopic, and immunohistochemical findings in a case of cholangiocarcinoma in an Australian goose (Cereopsisnovaehollandiae). The animal had cachexia and ascites. The liver and gallbladder had cystic masses that was diagnosed as acholangiocarcinoma.


Assuntos
Animais , Colangiocarcinoma/patologia , Colangiocarcinoma/veterinária , Gansos , Neoplasias dos Ductos Biliares/patologia , Neoplasias dos Ductos Biliares/veterinária
7.
Braz. j. vet. pathol ; 12(2): 63-68, 20190000. tab, ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469730

Resumo

A two-year-old, male, non-castrated cat was referred to the veterinary hospital with a three-month history of paresis of the pelvic limbs. Clinical examination revealed a discreet muffling of cardiac sounds and the presence of a degree III/VI holosystolic murmur. The animal was hospitalized and died of cardiorespiratory arrest. The heart had a thickened left ventricular endocardium characterized by the deposition of a fibrous white matter that was firmly adhered to the endocardium and also observed on the epicardium. Renal infarctions and thrombi in the atrium and bifurcation of the aorta were found. Microscopically, in the endocardium of the left ventricular chamber there was a diffuse and disorganized deposition of fibrous connective tissue filled with elastic fibers of varying thickness. In the left ventricular epicardium, the same lesion was observed, but with less extension. Clinical and anatomopathological findings were consistent with primary left ventricular endocardial and left ventricular epicardial fibroelastosis with secondary left ventricular congestive heart failure, thromboembolism and paresis.


Assuntos
Animais , Gatos , Fibroelastose Endocárdica/complicações , Fibroelastose Endocárdica/patologia , Fibroelastose Endocárdica/veterinária , Paresia/veterinária , Tromboembolia/veterinária , Insuficiência Cardíaca/veterinária , Parada Cardíaca/veterinária
8.
Braz. J. Vet. Pathol. ; 12(2): 63-68, 2019. tab, ilus
Artigo em Inglês | VETINDEX | ID: vti-23323

Resumo

A two-year-old, male, non-castrated cat was referred to the veterinary hospital with a three-month history of paresis of the pelvic limbs. Clinical examination revealed a discreet muffling of cardiac sounds and the presence of a degree III/VI holosystolic murmur. The animal was hospitalized and died of cardiorespiratory arrest. The heart had a thickened left ventricular endocardium characterized by the deposition of a fibrous white matter that was firmly adhered to the endocardium and also observed on the epicardium. Renal infarctions and thrombi in the atrium and bifurcation of the aorta were found. Microscopically, in the endocardium of the left ventricular chamber there was a diffuse and disorganized deposition of fibrous connective tissue filled with elastic fibers of varying thickness. In the left ventricular epicardium, the same lesion was observed, but with less extension. Clinical and anatomopathological findings were consistent with primary left ventricular endocardial and left ventricular epicardial fibroelastosis with secondary left ventricular congestive heart failure, thromboembolism and paresis.(AU)


Assuntos
Animais , Gatos , Paresia/veterinária , Fibroelastose Endocárdica/veterinária , Tromboembolia/veterinária , Fibroelastose Endocárdica/complicações , Fibroelastose Endocárdica/patologia , Parada Cardíaca/veterinária , Insuficiência Cardíaca/veterinária
9.
Braz. j. vet. pathol ; 11(2): 64-67, Jul.2018. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469707

Resumo

Reported cases of neoplasia affecting hippopotamus are very scarce. This report describes a metastatic oral squamous cell carcinoma in a captive 44-year-old male common hippopotamus (Hippopotamus amphibius) that developed progressive loss of appetite, fibrinohemorrhagic oral discharge, and progressive weight loss. Gross, cytological, and histopathological findings were compatible with a conclusive diagnosis of an invasive oral squamous cell carcinoma with metastasis in the lung, adrenal, and spleen. To the best of our knowledge this is the first report of squamous cell carcinoma in a common hippopotamus.


Assuntos
Animais , Artiodáctilos , Carcinoma de Células Escamosas/veterinária , Neoplasias Bucais/veterinária , Animais de Zoológico , Metástase Neoplásica
10.
Braz. J. Vet. Pathol. ; 11(2): 64-67, Jul.2018. ilus
Artigo em Inglês | VETINDEX | ID: vti-736283

Resumo

Reported cases of neoplasia affecting hippopotamus are very scarce. This report describes a metastatic oral squamous cell carcinoma in a captive 44-year-old male common hippopotamus (Hippopotamus amphibius) that developed progressive loss of appetite, fibrinohemorrhagic oral discharge, and progressive weight loss. Gross, cytological, and histopathological findings were compatible with a conclusive diagnosis of an invasive oral squamous cell carcinoma with metastasis in the lung, adrenal, and spleen. To the best of our knowledge this is the first report of squamous cell carcinoma in a common hippopotamus.(AU)


Assuntos
Animais , Carcinoma de Células Escamosas/veterinária , Artiodáctilos , Neoplasias Bucais/veterinária , Metástase Neoplásica , Animais de Zoológico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA