Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
Mais filtros

Base de dados
Intervalo de ano de publicação
1.
Ciênc. rural (Online) ; 53(8): e20220218, 2023. tab, mapas, ilus
Artigo em Inglês | VETINDEX | ID: biblio-1418157

Resumo

The increase in sheep production is directly related to the health status of the flock. Brazil is one of the largest sheep producers in the world, and the sheep flock is concentrated in southern and northeast regions. Infectious diseases are responsible for severe economic losses resulting from a decrease in milk and meat production, deaths, and cost of treatment. Among infectious diseases, viral diseases are described chiefly in case reports or retrospective studies. This study aimed to review the main features of viral diseases that affect sheep in Brazil and their current situation in the Brazilian territory. We included eight viral diseases described in Brazil: rabies, bluetongue, contagious ecthyma, foot and mouth disease, visna-maedi, enzootic nasal tumor, ovine pulmonary adenocarcinoma, and border disease. We review the etiological, epidemiological, clinical, and pathological findings for each agent and included differential diagnoses, information on recommended diagnostic methods to confirm the disease etiology, and control measures. This study served as quick consultation material for field veterinarians for an accurate diagnosis.


O aumento da produção ovina está diretamente relacionado ao status sanitário do rebanho. O Brasil é um dos maiores produtores mundiais de ovinos, e o rebanho está concentrado nas regiões nordeste e sul do país. As doenças infecciosas são responsáveis por perdas econômicas severas que resultam da diminuição na produção de leite e carne, mortes e custos com tratamentos. Entre os agentes infecciosos, as doenças de origem viral são, em sua maioria, descritas em relatos de caso ou estudos retrospectivos. Este estudo teve como objetivo revisar as principais características das doenças virais que afetam ovinos no território brasileiro, e qual sua situação atual. Nós incluímos oito doenças virais diagnosticadas no Brasil: raiva, língua azul, ectima contagioso, febre aftosa, maedi-visna, tumor enzoótico nasal, adenocarcinoma pulmonar ovino, e pestivirose. Revisamos os achados etiológicos, epidemiológicos, clínicos e patológicos de cada agente e incluímos seus respectivos diagnósticos diferenciais, informações acerca dos métodos diagnósticos para confirmação da etiologia da doença e medidas de controle e prevenção. Esse estudo tem o propósito de servir como objetivo servir de material de consulta rápida, especialmente para veterinários de campo realizar um diagnóstico acurado.


Assuntos
Animais , Doenças dos Ovinos/diagnóstico , Viroses/veterinária , Doenças Transmissíveis/veterinária
2.
Ciênc. rural (Online) ; 53(8): e20220254, 2023. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1418160

Resumo

We described a case of cerebral infarction and thrombotic meningoencephalitis due to candidiasis in a seven-month-old calf. The death occurred three days after the onset of apathy, fever, and the head's lateral deviation to the left. Macroscopic changes in the brain consisted of asymmetry of telencephalic hemispheres; the right hemisphere was enlarged, causing cerebellar herniation. A focally extensive red area was observed on the surface of the right occipital lobe. At cross-sections of the fixed brain, the lesions revealed to be extensive, red-brown, soft or cavitated areas affecting the white and grey matter from the level of the thalamus to the cerebellum and compressing subjacent structures. Histologically, there was acute, coalescent, multifocal necrosupurative meningoencephalitis, associated with vasculitis, congestion, thrombosis, edema, infarction, and intralesional fungal hyphae. The diagnosis of cerebral infarction and thrombotic meningoencephalitis due to candidiasis was made by the pathological changes, the staining and morphological characteristics of the agent, and immunohistochemistry. The cerebral infarction and thrombotic meningoencephalitis in cattle can result from vascular lesions due to infection by Candida sp.; although uncommon, this case demonstrated that candidiasis should be part of a list of differential diagnoses of severe brain injuries in cattle.


Descreve-se um caso de infarto cerebral e meningoencefalite trombótica devido a candidíase em um bezerro de sete meses de idade. A morte ocorreu três dias após o início de apatia, febre e desvio lateral da cabeça para a esquerda. As alterações macroscópicas no cérebro consistiam em assimetria dos hemisférios telencefálicos; o hemisfério direito estava aumentado, causando herniação cerebelar. Uma extensa área vermelha focal foi observada na superfície do lobo occipital direito. Nos cortes transversais do encéfalo fixado, as lesões revelaram áreas extensas, marrom-avermelhadas, moles ou cavitadas, afetando a substância branca e cinzenta desde o nível do tálamo até o cerebelo e comprimindo as estruturas subjacentes. Histologicamente, havia meningoencefalite necrossupurativa multifocal aguda, coalescente, associada a vasculite, congestão, trombose, edema, infarto e hifas fúngicas intralesionais. O diagnóstico de infarto cerebral e meningoencefalite trombótica devido a candidíase foi feito pelas alterações patológicas, coloração e características morfológicas do agente e imuno-histoquímica. O infarto cerebral e meningoencefalite trombótica em bovinos pode resultar de lesões vasculares devido à infecção por Candida sp.; embora incomum, este caso demonstra que a candidíase deve fazer parte de uma lista de diagnósticos diferenciais de lesões cerebrais graves em bovinos.


Assuntos
Animais , Bovinos , Candidíase/complicações , Doenças dos Bovinos , Infarto Cerebral/veterinária , Traumatismo Cerebrovascular/veterinária , Meningoencefalite/veterinária
3.
Braz. j. vet. pathol ; 14(3): 191-198, 2021. tab, ilus
Artigo em Inglês | VETINDEX | ID: biblio-1469808

Resumo

Relatamos um caso de melanose difusa secundária a melanoma maligno metastático em um touro Nelore. Os sinais clínicos incluíram isolamento do rebanho, epistaxe, hipertermia, pálidas membranas oculares, diarreia mucóide e urina escura. Apesar da terapia antiinflamatória e antibiótica, o touro morreu 45 dias após o início dos sinais clínicos. A lesão mais marcante foi uma descoloração negra difusa para os órgãos viscerais, incluindo fígado, baço, pulmões, nódulos linfáticos e rins; todos esses órgãos afetivos foram moderadamente aumentados ”. A urina estava preta. Histologicamente, 50-80% do parênquima do fígado, baço e linfonodos foi obliterado por agregados de melanócitos neoplásicos carregados de melanina. Essas células neoplásicas também ocorreram nos capilares do fígado, baço, linfonodos, bexiga urinária, pulmões e rins. A imunohistoquímica de melanócitos neoplásicos foi positiva para os marcadores Melan A e PNL2. Pigmento marrom a preto abundante foi encontrado em melanófagos nos pulmões, confirmado por imunohistoquímica com IBA1.


Assuntos
Bovinos , Fatores Imunológicos , Imuno-Histoquímica , Melanoma/diagnóstico
4.
Braz. J. Vet. Pathol. ; 14(3): 191-198, 2021. tab, ilus
Artigo em Inglês | VETINDEX | ID: vti-33022

Resumo

Relatamos um caso de melanose difusa secundária a melanoma maligno metastático em um touro Nelore. Os sinais clínicos incluíram isolamento do rebanho, epistaxe, hipertermia, pálidas membranas oculares, diarreia mucóide e urina escura. Apesar da terapia antiinflamatória e antibiótica, o touro morreu 45 dias após o início dos sinais clínicos. A lesão mais marcante foi uma descoloração negra difusa para os órgãos viscerais, incluindo fígado, baço, pulmões, nódulos linfáticos e rins; todos esses órgãos afetivos foram moderadamente aumentados ”. A urina estava preta. Histologicamente, 50-80% do parênquima do fígado, baço e linfonodos foi obliterado por agregados de melanócitos neoplásicos carregados de melanina. Essas células neoplásicas também ocorreram nos capilares do fígado, baço, linfonodos, bexiga urinária, pulmões e rins. A imunohistoquímica de melanócitos neoplásicos foi positiva para os marcadores Melan A e PNL2. Pigmento marrom a preto abundante foi encontrado em melanófagos nos pulmões, confirmado por imunohistoquímica com IBA1.(AU)


Assuntos
Bovinos , Melanoma/diagnóstico , Fatores Imunológicos , Imuno-Histoquímica
5.
Acta sci. vet. (Impr.) ; 47(suppl.1): Pub.352-2019. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458116

Resumo

Background: Crotalaria spp. Poisoning induces liver or pulmonary disease. C. mucronata, C. juncea, C. spectabilis, andC. retusa are the Crotalaria spp. inducing spontaneous intoxication in livestock in Brazil. C. mucronata and C. junceaare associated with interstitial pneumonia, while C. retusa and C. specatabilis induce hepatotoxicosis. The toxic principle in Crotalaria spp. are dehydropyrrolizidine alkaloids and their N-oxides. C. incana poisoning to livestock is rarelydocumented. This paper reports the clinical signs and pathological findings of a case of Crotalaria incana poisoning in asteer. The chemical finding of a potential toxic dehydropyrrolizidine alkaloid in the plant is documented for the first time.Case: The affected bovine was part of a herd of 80 two-year-old steers that were transferred from Property 1 to Property2, 30 days prior to the event. In the pasture of Property I - where the steers were held for 6 months - there was a heavyinfestation by a Crotalaria species with signs of being consumed by the steers. The plant was identified as Crotalariaincana at the Botanical Laboratory of the Federal University of Mato Grosso do Sul and a voucher specimen was filedthere under the register GCMS 51169. Two days after entering Property 2 one of the steers became depressed, staggering,and in poor body condition. With time, the steer became oblivious to the environment and died 20 days after the onset ofthe clinical signs. Significant necropsy findings were limited to the liver which was markedly enlarged and with roundededges. The hepatic cut surface was mottled with dark red and extensive orange areas of discoloration. The gallbladder wasdistended and the bile was inspissated. Microscopically, in the liver, there was fibrosis, bile duct hyperplasia and hepatocellular megalocytosis. The Glisson’s capsule was markedly thickened by fibrosis. In the brain, there was vacuolation ofmyelin...


Assuntos
Animais , Bovinos , Crotalaria , Encefalopatia Hepática/veterinária , Fígado/lesões , Hepatopatias/complicações , Hepatopatias/veterinária , Insuficiência Hepática/veterinária , Plantas Tóxicas
6.
Acta sci. vet. (Impr.) ; 47(suppl.1): Pub.415-2019. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458179

Resumo

Background: Squamous cell carcinomas and lymphomas are the most prevalent neoplasms in cattle, the latter usually being attributed to infection by bovine leukemia virus (BLV). Neoplasms of the oral cavity are sporadic in cattle, with but asingle case of lymphoma involving this anatomic site in a bovine reported to date. This paper reports a case of lymphomainvolving the oral cavity of a dairy cow. The clinical and pathological aspects of the tumor are described and discussed.Case: A 39-month-old Holstein-Friesian cow was presented with weight loss and a tumorous growth in the left masseterregion, tearing in the left eye, and mild ipsilateral exophthalmos. Treatment with antibiotics was unsuccessful. The tumorgrowth was 16 x 11 cm, with a soft center and firm periphery, multilobulated, with white intercalated with black and friableareas from which a fetid odor emanated. The cut surface was predominantly white-yellow. A cross-section of the head,caudal to the second molar, revealed a mass infiltrating and almost completely obliterating the left nasal cavity, destroyingthe frontal sinus, the ventral conchae, and the middle and ventral meatus, and compressing the common meatus. The tracheobronchial, mediastinal, and internal iliac lymph nodes were enlarged and masses with similar characteristics to thosein the oral cavity replace their parenchyma. Microscopically, the mass consisted of large neoplastic lymphocytes arrangedin a non-encapsulated and infiltrative mantle and supported by scarce fibrovascular tissue. The cytoplasm of neoplasticcells was scarce and had distinct boundaries; the nuclei were round or oval, the chromatin was finely granulated, and theprominent nucleolus had occasionally multiplied. Nuclear pleomorphism was marked and there were, on average, five mitotic figures per microscopic field of 400x. Similar neoplastic cells obliterated the normal...


Assuntos
Feminino , Animais , Bovinos , Boca/patologia , Linfoma de Células T Periférico/patologia , Linfoma de Células T Periférico/veterinária , Imuno-Histoquímica/veterinária , Neoplasias Hematológicas/veterinária
7.
Acta sci. vet. (Online) ; 47(suppl.1): Pub. 415, Aug. 24, 2019. ilus
Artigo em Inglês | VETINDEX | ID: vti-21441

Resumo

Background: Squamous cell carcinomas and lymphomas are the most prevalent neoplasms in cattle, the latter usually being attributed to infection by bovine leukemia virus (BLV). Neoplasms of the oral cavity are sporadic in cattle, with but asingle case of lymphoma involving this anatomic site in a bovine reported to date. This paper reports a case of lymphomainvolving the oral cavity of a dairy cow. The clinical and pathological aspects of the tumor are described and discussed.Case: A 39-month-old Holstein-Friesian cow was presented with weight loss and a tumorous growth in the left masseterregion, tearing in the left eye, and mild ipsilateral exophthalmos. Treatment with antibiotics was unsuccessful. The tumorgrowth was 16 x 11 cm, with a soft center and firm periphery, multilobulated, with white intercalated with black and friableareas from which a fetid odor emanated. The cut surface was predominantly white-yellow. A cross-section of the head,caudal to the second molar, revealed a mass infiltrating and almost completely obliterating the left nasal cavity, destroyingthe frontal sinus, the ventral conchae, and the middle and ventral meatus, and compressing the common meatus. The tracheobronchial, mediastinal, and internal iliac lymph nodes were enlarged and masses with similar characteristics to thosein the oral cavity replace their parenchyma. Microscopically, the mass consisted of large neoplastic lymphocytes arrangedin a non-encapsulated and infiltrative mantle and supported by scarce fibrovascular tissue. The cytoplasm of neoplasticcells was scarce and had distinct boundaries; the nuclei were round or oval, the chromatin was finely granulated, and theprominent nucleolus had occasionally multiplied. Nuclear pleomorphism was marked and there were, on average, five mitotic figures per microscopic field of 400x. Similar neoplastic cells obliterated the normal...(AU)


Assuntos
Animais , Feminino , Bovinos , Linfoma de Células T Periférico/patologia , Linfoma de Células T Periférico/veterinária , Boca/patologia , Imuno-Histoquímica/veterinária , Neoplasias Hematológicas/veterinária
8.
Acta sci. vet. (Online) ; 47(suppl.1): Pub. 352, 2019. ilus
Artigo em Inglês | VETINDEX | ID: vti-738851

Resumo

Background: Crotalaria spp. Poisoning induces liver or pulmonary disease. C. mucronata, C. juncea, C. spectabilis, andC. retusa are the Crotalaria spp. inducing spontaneous intoxication in livestock in Brazil. C. mucronata and C. junceaare associated with interstitial pneumonia, while C. retusa and C. specatabilis induce hepatotoxicosis. The toxic principle in Crotalaria spp. are dehydropyrrolizidine alkaloids and their N-oxides. C. incana poisoning to livestock is rarelydocumented. This paper reports the clinical signs and pathological findings of a case of Crotalaria incana poisoning in asteer. The chemical finding of a potential toxic dehydropyrrolizidine alkaloid in the plant is documented for the first time.Case: The affected bovine was part of a herd of 80 two-year-old steers that were transferred from Property 1 to Property2, 30 days prior to the event. In the pasture of Property I - where the steers were held for 6 months - there was a heavyinfestation by a Crotalaria species with signs of being consumed by the steers. The plant was identified as Crotalariaincana at the Botanical Laboratory of the Federal University of Mato Grosso do Sul and a voucher specimen was filedthere under the register GCMS 51169. Two days after entering Property 2 one of the steers became depressed, staggering,and in poor body condition. With time, the steer became oblivious to the environment and died 20 days after the onset ofthe clinical signs. Significant necropsy findings were limited to the liver which was markedly enlarged and with roundededges. The hepatic cut surface was mottled with dark red and extensive orange areas of discoloration. The gallbladder wasdistended and the bile was inspissated. Microscopically, in the liver, there was fibrosis, bile duct hyperplasia and hepatocellular megalocytosis. The Glissons capsule was markedly thickened by fibrosis. In the brain, there was vacuolation ofmyelin... (AU)


Assuntos
Animais , Bovinos , Encefalopatia Hepática/veterinária , Fígado/lesões , Hepatopatias/complicações , Hepatopatias/veterinária , Crotalaria , Insuficiência Hepática/veterinária , Plantas Tóxicas
9.
Ci. Rural ; 49(1): e20180621, Jan. 31, 2019. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-19341

Resumo

This study described the epidemiological, clinical, pathological and bacteriological aspects of Mannheimia haemolytica pleuropneumonia in goats associated with shipping stress. Forty goats transported from the Northeast to the Southern region of Brazil died during shipment, or 2-3 days after unloading. Clinical signs included dyspnea, mucopurulent nasal discharge, and coughing. All goats were necropsied, and multiple tissues were collected for histopathological analysis and involved agent identifications. All lungs showed pulmonary consolidation, predominantly affecting the cranioventral lobes, in addition to the marked fibrinous pleuritis, pleural thickening, and pleural adhesions, that affected 90% of the goats. Histologically, there was fibrino-suppurative pleuropneumonia characterized by a diffuse neutrophilic infiltrate admixed with fibrin. Non-hemolytic [85% (34/40)] and hemolytic [15% (6/40)] species were obtained in bacteriological culture. Fir Mannheimia spp. was reported in 26 isolates and subsequently confirmed as M. haemolytica (99% identity), after amplification and partial sequencing of the 16S rDNA gene. Stress may trigger the development of bacterial pleuropneumonia in goats, and non-hemolytic strains of M. haemolytica may cause this condition in goats with severe immunosuppression.(AU)


Descreve-se os aspectos epidemiológicos, clínicos, patológicos e bacteriológicos da pleuropneumonia por Mannheimia haemolytica em caprinos, após transporte prolongado. Quarenta caprinos transportados da região Nordeste para a região Sul do Brasil morreram durante a viagem ou 2-3 dias após o desembarque. Clinicamente, observou-se dispneia, secreção nasal mucopurulenta e tosse. Na necropsia foram coletados múltiplos fragmentos de órgãos para análises histopatológicas e identificação do agente envolvido. Todos os pulmões apresentaram consolidação pulmonar predominantemente em região cranioventral, associada à deposição acentuada de fibrina, espessamento e aderência pleurais em 90% dos casos. Histologicamente, havia pleuropneumonia fibrinossupurativa caracterizada por infiltrado neutrofílico difuso associado à fibrina. Colônias não hemolíticas [85% (34/40)] e hemolíticas [15% (6/40)] foram obtidas pelo isolamento bacteriológico. Mannheimia spp. foi isolada em 26 amostras, os quais posteriormente foram confirmados como Mannheimia haemolytica (99% de identidade), pela amplificação e sequenciamento parcial do gene 16S rDNA. O estresse pode favorecer o desenvolvimento de pleuropneumonia bacteriana em caprinos, e cepas não hemolíticas de M. haemolytica podem causar doença em animais com imunodepressão acentuada.(AU)


Assuntos
Animais , Ruminantes , Pleuropneumonia/veterinária , Mannheimia haemolytica , Estresse Psicológico/complicações , Reação em Cadeia da Polimerase/veterinária
10.
Acta sci. vet. (Impr.) ; 44(supl): 01-06, 2016. ilus, tab
Artigo em Português | VETINDEX | ID: biblio-1457532

Resumo

Background: Aflatoxins are hepatotoxic mycotoxins derived from the secondary metabolism of toxigenic fungi belonging to the genus Aspergillus, especially A. flavus and A. parasiticus. Aflatoxin B1 is the most important metabolite, because of its deleterious effect mainly to the liver, especially for its carcinogenic, mutagenic and haemorrhagic properties, and usually is detected in higher concentrations in contaminated substrates. This paper reports the epidemiological, clinical, pathological and toxicological aspects of an outbreak of acute aflatoxicosis in pigs raised in Northeastern Brazil. Case: The cases occurred in a complete cycle farm, in the city of Mossoró, Rio Grande do Norte, Northeastern Brazil, in pigs ingesting low quality (moldy) corn being produced and processed on the farm. Sixty (73.1%) out of 82 two to five-months old pigs were clinicaly affected and 54 (65.8%) died. All animals showed fever, weight loss, tachycardia, tachypnea, lethargy, muscle tremors, muscle weakness and diarrhea. The clinical course ranged from five to 48 hours. Adult pigs were not affected. At necropsies, generalized jaundice, ascites, hydropericardium, petechial hemorrhages in the mesentery, subcutaneous edema and mesocolon were observed. The liver was yellow-orange with reddish diffuse multifocal areas, enlarged and extremely friable. Histologically there was swelling of hepatocytes [...]


Assuntos
Animais , Aflatoxina B1/análise , Aflatoxinas/análise , Aspergillus , Hepatite Animal/diagnóstico , Suínos/microbiologia , Micotoxinas/análise , Ração Animal/toxicidade , Zea mays/toxicidade
11.
Acta sci. vet. (Online) ; 44(supl): 01-06, 2016. ilus, tab
Artigo em Português | VETINDEX | ID: vti-482951

Resumo

Background: Aflatoxins are hepatotoxic mycotoxins derived from the secondary metabolism of toxigenic fungi belonging to the genus Aspergillus, especially A. flavus and A. parasiticus. Aflatoxin B1 is the most important metabolite, because of its deleterious effect mainly to the liver, especially for its carcinogenic, mutagenic and haemorrhagic properties, and usually is detected in higher concentrations in contaminated substrates. This paper reports the epidemiological, clinical, pathological and toxicological aspects of an outbreak of acute aflatoxicosis in pigs raised in Northeastern Brazil. Case: The cases occurred in a complete cycle farm, in the city of Mossoró, Rio Grande do Norte, Northeastern Brazil, in pigs ingesting low quality (moldy) corn being produced and processed on the farm. Sixty (73.1%) out of 82 two to five-months old pigs were clinicaly affected and 54 (65.8%) died. All animals showed fever, weight loss, tachycardia, tachypnea, lethargy, muscle tremors, muscle weakness and diarrhea. The clinical course ranged from five to 48 hours. Adult pigs were not affected. At necropsies, generalized jaundice, ascites, hydropericardium, petechial hemorrhages in the mesentery, subcutaneous edema and mesocolon were observed. The liver was yellow-orange with reddish diffuse multifocal areas, enlarged and extremely friable. Histologically there was swelling of hepatocytes [...](AU)


Assuntos
Animais , Suínos/microbiologia , Aflatoxinas/análise , Aspergillus , Aflatoxina B1/análise , Hepatite Animal/diagnóstico , Zea mays/toxicidade , Micotoxinas/análise , Ração Animal/toxicidade
12.
Ci. Rural ; 38(4): 1181-1183, jul.-ago. 2008. ilus
Artigo em Português | VETINDEX | ID: vti-4554

Resumo

A autólise da camada de células granulares do cerebelo é um achado postmortem observado em bovinos e relacionado ao prolongado tempo de duração entre a morte e a fixação do encéfalo. Para observar a prevalência desse artefato, 228 cerebelos foram examinados histologicamente ao longo do verme cerebelar. Trinta e seis por cento desses casos apresentaram conglutinação cerebelar não relacionada a doença específica. Em 74,4 por cento dos casos em que foi observada conglutinação cerebelar, não foram observadas alterações histopatológicas. Histologicamente, a conglutinação cerebelar caracterizou-se por dissolução segmentar ou difusa da camada de células granulares. A descrição deste artefato é importante, pois já foi confundido como lesão relacionada a doença específica do sistema nervoso de bovinos.(AU)


Cerebellar conglutination of the granule cell layer is a postmortem artifact observed in cattle. It is related to increased time between death and fixation of the brain. In this study, 228 cerebellum were histologically analyzed throughout cerebellar vermis. Cerebellar conglutination was observed in 36 percent of the cases and it was not related to specific diseases. Seventy-four percent of the cases did not present any histological lesions in the brain. Microscopically, cerebellar conglutination was characterized by segmentar or diffuse dissolution of the granule cell layer. This artifact has been misinterpreted as resulting from specific diseases of the central nervous system in cattle, and it has to be differentiated from important antemortem lesions.(AU)


Assuntos
Animais , Bovinos , Bovinos , Células
13.
Ci. Rural ; 38(4): 1044-1049, jul.-ago. 2008. ilus, tab
Artigo em Português | VETINDEX | ID: vti-4536

Resumo

Neste trabalho são descritos casos de doença neurológica causada por Coenurus cerebralis em 16 ovinos provenientes de nove propriedades rurais do Rio Grande do Sul. Os casos ocorreram entre janeiro de 1990 e dezembro de 2006. A evolução clínica variou de 30-90 dias e os ovinos afetados apresentavam depressão (9/16), isolamento do rebanho (8/16), andar cambaleante (7/16), cegueira (4/16), desvio da cabeça (3/16), incoordenação (3/16), movimentos de pedalagem (2/16), quedas (2/16), andar em círculos, deficiência proprioceptiva nos membros torácicos e pélvicos, estrabismo, midríase, opistótono, tremores e rigidez dos membros (1/16 cada). Os achados macroscópicos foram restritos ao sistema nervoso central e caracterizados por cistos de 2 a 9cm de diâmetro preenchidos por líquido translúcido e revestidos por fina membrana. Na parte interna da membrana, havia numerosas estruturas levemente alongadas e brancas de aproximadamente 1mm de diâmetro (escólices). Na maioria dos ovinos, os cistos eram localizados no telencéfalo (12/16); em três, os cistos estavam no cerebelo e em um ovino havia um cisto no cerebelo e um na medula espinhal. Em todos os casos havia acentuada compressão e deslocamento do tecido nervoso adjacente aos cistos. Histologicamente, os cistos parasitários eram formados por dupla membrana fracamente eosinofílica da qual evaginavam múltiplos escólices esféricos acelomados. Adjacente à parede da vesícula eram observadas sucessivas camadas compostas por uma zona de necrose e mineralização, circundadas por infiltrado inflamatório composto por macrófagos epitelióides e células gigantes multinucleadas, com uma cápsula externa de tecido fibrovascular e infiltrado inflamatório linfoistioplasmocitário perivascular. Adicionalmente, havia compressão e atrofia das substâncias branca e cinzenta adjacentes. O diagnóstico de cenurose foi realizado com base nos achados epidemiológicos, clínicos e macroscópicos, e confirmado pela histopatologia.(AU)


Sixteen cases of neurologic disease caused by Coenurus cerebralis occurring in sheep from nine farms in Rio Grande do Sul, Brazil, from January 1990 to December 2006, are described. Clinical courses varied from 30 to 90 days and affected sheep developed depression (9/16), isolation from the herd (8/16), staggering (7/16), blindness (4/16), head tilt (3/16), incoordination (3/16), paddling (2/16), falls (2/16), circling, proprioceptive deficits in fore and hindlimbs, strabismus, mydriasis, opisthotonus, trembling and rigidity of the limbs (1/16 each one). Macroscopic findings were restricted to central nervous system and consisted of 2 to 9cm fluid filled cysts with numerous slightly elongated 1 mm white scolices attached to the inner wall surface of the capsule. Cysts were located in the telencephalon (12/16); in the cerebellum (3 sheep); and in the cerebellum and spinal cord (1 sheep). All cases showed severe compression and displacement of the adjacent nervous tissue. Histologically, the cyst walls were characterized by a thin walled eosinophilic vesicle in which evaginated multiple spherical acelomated scolices. The cyst wall was surrounded by successive layers consisting of an internal necrotic and mineralized band, a layer of epithelioid macrophages with abundant number of multinucleated giant cell and an external fibrovascular capsule with perivascular lymphohistioplasmacytic infiltrate. Adjacent white and gray matter were compressed and atrophied. The diagnosis was based on epidemiologic, clinical and pathologic findings and confirmed by histopathology.(AU)


Assuntos
Animais , Ovinos , Infecções por Cestoides
14.
Ci. Rural ; 38(3): 830-832, maio-jun. 2008. ilus
Artigo em Inglês | VETINDEX | ID: vti-4373

Resumo

A case of suprasellar germ cell tumor is described in a 6-year -old Airedale Terrier bitch that presented behavioral changes and abrupt onset of blindness. The neoplasm compressed the ventral surface of the cerebrum from the level of basal ganglia to the mesencephalon. Histologically the neoplasm consisted of nests and trabeculae of round to polygonal cells that occasionally surround tubules and cysts formed by columnar cells. Neoplastic cells are immunopositive for cytokeratin and alpha-fetoprotein. The diagnosis was based on location, histological appearance and on the immunohistochemical staining.(AU)


É descrito um caso de tumor de células germinativas supra-selar em numa cadela Airedale Terrier de seis anos de idade, que apresentou transtornos do comportamento e aparecimento abrupto de cegueira. O neoplasma comprimia a superfície ventral do cérebro desde a altura dos núcleos basais até o mesencéfalo. Histologicamente, o neoplasma consistia de ninhos e trabéculas de células redondas ou poligonais que ocasionalmente arranjavam-se ao redor de túbulos e cistos formados por células colunares. As células neoplásicas foram positivas na imunoistoquímica para citoqueratina e a-fetoproteína. O diagnóstico foi feito com base na localização do tumor, no seu aspecto histológico e nos resultados da marcação imunoistoquímica.(AU)


Assuntos
Animais , Cães , Cistos do Sistema Nervoso Central/veterinária , Cães
15.
Ci. Rural ; 38(5): 1375-1380, ago. 2008.
Artigo em Português | VETINDEX | ID: vti-4785

Resumo

O atropelamento por veículos automotivos contribui significativamente para as estatísticas de morte em cães. Entretanto, há poucos estudos sobre os aspectos patológicos reportados na literatura. Este artigo descreve 155 casos fatais de atropelamento por veículos automotivos em cães. Dos 155 cães atropelados, em 138 (89,0 por cento) havia lesões que explicavam a morte ou a razão para a eutanásia desses cães. Essas lesões incluíram traumatismo espinhal-medular (43 [27,7 por cento]), ruptura de órgãos parenquimatosos (40 [25,8 por cento]), traumatismo cranioencefálico (28 [18,1 por cento]), ruptura de órgãos ocos (16 [10,3 por cento]), fratura de costelas com laceração de órgãos parenquimatosos (15 [9,7 por cento]) e ruptura de diafragma com deslocamento de vísceras abdominais para a cavidade torácica (10 [6,4 por cento]).(AU)


Motor vehicle-related trauma significantly contributes to death statistics of dogs. There are however few documented reports on the pathological aspects of such cases. This paper describes 155 fatal cases of dogs victimized by motor vehicle accidents. In 138 (89.0 percent) of the 155 dogs hit by motor vehicles there were lesions that could explain the death or reason for these dogs being euthanatized. These lesions included vertebrospinal trauma (43 [27.7 percent]), rupture of parenchymal organs (40 [25.8 percent]), cranioencephalic trauma (28 [18.1 percent]), rupture of hollow organs (16 [10.3 percent]), rib fracture with subsequent laceration of parenchymal organs (15 [9.7 percent]), and diaphragmatic rupture with displacement of abdominal viscera into the thoracic cavity (10 [6.4 percent]).(AU)


Assuntos
Animais , Cães , Cães , Patologia Veterinária , Traumatologia , Ferimentos e Lesões
16.
MEDVEP. Rev. cient. Med. Vet. ; 4(12): 139-146, abr.-jun.2006. ilus
Artigo em Português | VETINDEX | ID: vti-517

Resumo

Foi realizado um estudo retrospectivo de 43 casos de linfoma em cães. Dos 43 cães. 27 (62,8%) eram machos e 16 (37,2%) eram fêmeas. A idade dos cães afetados variou de dois a 18 anos; 20 (46,5%) eram adultos e 23 (53,5%) eram idosos. Os sinais clínicos apresentados incluíram: linfadenopatia periférica generalizada (35/43 [81,4%]), perda de peso (14/43 [32,6%]), palidez das mucosas (13/43 [30,2%]), anorexia (9/43[20,0%]), edema subcutâneo unilateral ou bilateral nos membros pélvicos (5/43 [11.6%]), massas cutâneas (5/43 [11,6%]), vômito (4/43 [9,3%]), diarréia (4/43 [9,3%]), disfagia 93/43 [7,0%]), ascite (2/43 [4,6%]), icterícia (2/43 [4,6%]), exoftalmia (1/43 [2,3%]), convulsão (1/43 [2,3%), dispnéia (1/43 [2,3%]) e edema subcutâneo na cabeça (1/43 [2,3%]). Os órgãos afetados foram linfonodos (40/43 [93,0%]),fígado (23/43 [54,5%]), baço (22/43 [51,2%]), rins (9/43 [20,9%]), coração (6/43 [54,5%]), tonsilas (6/43 [14,0%]), pele (5/43 [11,6%]), intestino delgado (3/43 [7,0%]), estômago (3/43 [7,0%]), medula óssea (2/43 [4,6%]), pulmão (2/43 [4,6%]), pâncreas (1/43 [2,3%]), adrenais (1/43 [2,3%]), ovários (1/43 [2,3%]), vesícula biliar (1/43 [2,3%]), esôfago (1/43 [2,3%]), diafragma (1/43 [2,3%]) e timo (1/43 [2,3%]). A distribuição multicêntrica foi a forma anatômica mais freqüentemente observada (40/43 [93,0%])(AU)


A retrospective study examining 43 cases of lymphoma in dogs reviewed. Of the 43 dogs 27(62.8%) were males and 16(37.2%) were females. The age of affected dogs varied from 2 to 17-year-old; they were further classified as adults (20/43 [46.6%]) and aged (23/43 [53.5%]). Presenting clinical signs in affected dogs included generalized peripheral lymphadenopathy (35/43 [81.4%]), weight loss (14/43 [32.6%]), pale mucous membranes13/43 [30.2%]), anorexia (9/43[20.0%]), unilateral or bilateral subcutaneous edema in the hindlimbs (5/43 [11.6%]), cutaneous enlargements, (5/43 [11.6%]),, vomiting (4/43 [9.3%]), diarrhea (4/43 [9.3%]), dysphagia93/43 [7.0%]), ascites (2/43 [4.6%]), icterus (2/43 [4.6%]), exophthalmos (1/43 [2.3%]), convulsions (1/43 [2.3%), dyspnea (1/43 [2.3%]), and subcutaneous edema of the head (1/43 [2.3%]). Affected organs included lymph nodes (40/43 [93.0%]), liver (23/43 [54.5%]), spleen (22/43 [51.2%]), kidneys (9/43 [20.9%]), heart (6/43 [54.5%]), tonsils (6/43 [14.0%]), skin (5/43 [11.6%]), small intestine (3/43 [7.0%]), stomach (3/43 [7.0%], bone marrow (2/43 [4.6%]), lung (2/43 [4.6%]), pancreas (1/43 [2.3%]), adrenal glands (1/43 [2.3%]), ovaries (1/43 [2.3%]), gall bladder (1/43 [2.3%]), esophagus (1/43 [2.3%]), diaphragm (1/43 [2.3%]) and thymus (1/43 [2.3%]). A multicentric distribution was the anatomic presentation most frequently observed (40/43 [93.0%])(AU)


Assuntos
Linfoma/patologia , Cães
17.
Artigo em Português | VETINDEX | ID: biblio-1485131

Resumo

Foi realizado um estudo retrospectivo de 43 casos de linfoma em cães. Dos 43 cães. 27 (62,8%) eram machos e 16 (37,2%) eram fêmeas. A idade dos cães afetados variou de dois a 18 anos; 20 (46,5%) eram adultos e 23 (53,5%) eram idosos. Os sinais clínicos apresentados incluíram: linfadenopatia periférica generalizada (35/43 [81,4%]), perda de peso (14/43 [32,6%]), palidez das mucosas (13/43 [30,2%]), anorexia (9/43[20,0%]), edema subcutâneo unilateral ou bilateral nos membros pélvicos (5/43 [11.6%]), massas cutâneas (5/43 [11,6%]), vômito (4/43 [9,3%]), diarréia (4/43 [9,3%]), disfagia 93/43 [7,0%]), ascite (2/43 [4,6%]), icterícia (2/43 [4,6%]), exoftalmia (1/43 [2,3%]), convulsão (1/43 [2,3%), dispnéia (1/43 [2,3%]) e edema subcutâneo na cabeça (1/43 [2,3%]). Os órgãos afetados foram linfonodos (40/43 [93,0%]),fígado (23/43 [54,5%]), baço (22/43 [51,2%]), rins (9/43 [20,9%]), coração (6/43 [54,5%]), tonsilas (6/43 [14,0%]), pele (5/43 [11,6%]), intestino delgado (3/43 [7,0%]), estômago (3/43 [7,0%]), medula óssea (2/43 [4,6%]), pulmão (2/43 [4,6%]), pâncreas (1/43 [2,3%]), adrenais (1/43 [2,3%]), ovários (1/43 [2,3%]), vesícula biliar (1/43 [2,3%]), esôfago (1/43 [2,3%]), diafragma (1/43 [2,3%]) e timo (1/43 [2,3%]). A distribuição multicêntrica foi a forma anatômica mais freqüentemente observada (40/43 [93,0%])


A retrospective study examining 43 cases of lymphoma in dogs reviewed. Of the 43 dogs 27(62.8%) were males and 16(37.2%) were females. The age of affected dogs varied from 2 to 17-year-old; they were further classified as adults (20/43 [46.6%]) and aged (23/43 [53.5%]). Presenting clinical signs in affected dogs included generalized peripheral lymphadenopathy (35/43 [81.4%]), weight loss (14/43 [32.6%]), pale mucous membranes13/43 [30.2%]), anorexia (9/43[20.0%]), unilateral or bilateral subcutaneous edema in the hindlimbs (5/43 [11.6%]), cutaneous enlargements, (5/43 [11.6%]),, vomiting (4/43 [9.3%]), diarrhea (4/43 [9.3%]), dysphagia93/43 [7.0%]), ascites (2/43 [4.6%]), icterus (2/43 [4.6%]), exophthalmos (1/43 [2.3%]), convulsions (1/43 [2.3%), dyspnea (1/43 [2.3%]), and subcutaneous edema of the head (1/43 [2.3%]). Affected organs included lymph nodes (40/43 [93.0%]), liver (23/43 [54.5%]), spleen (22/43 [51.2%]), kidneys (9/43 [20.9%]), heart (6/43 [54.5%]), tonsils (6/43 [14.0%]), skin (5/43 [11.6%]), small intestine (3/43 [7.0%]), stomach (3/43 [7.0%], bone marrow (2/43 [4.6%]), lung (2/43 [4.6%]), pancreas (1/43 [2.3%]), adrenal glands (1/43 [2.3%]), ovaries (1/43 [2.3%]), gall bladder (1/43 [2.3%]), esophagus (1/43 [2.3%]), diaphragm (1/43 [2.3%]) and thymus (1/43 [2.3%]). A multicentric distribution was the anatomic presentation most frequently observed (40/43 [93.0%])


Assuntos
Cães , Linfoma/patologia
18.
MEDVEP. Rev. cient. Med. Vet. ; 1(3): 177-182, jul.-set. 2003. ilus
Artigo em Português | VETINDEX | ID: vti-229

Resumo

A leishmaniose mucocutânea causada por Leishmania (Leishmania) enriettii afeta Cobaios (Cavia porcellus) no Brasil, principalmente no sul do país. Os animais afetados desenvolvem nódulos ou massas ulceradas e crostosas nas orelhas, focinho, lábios, patas, escroto, vulva e ao redor dos olhos. Este relato descreve um surto de leishmaniose mucocutânea diagnosticado em cobaios de uma propriedade localizada em Santa Maria, Rio Grande do Sul, Brasil. O diagnóstico foi realizado pela associação dos achados epidemiológicos, clínicos, citopatológicos, histopatológicas e de microscopia eletrônica de transmissão(AU)


Mucocutaneous leishmaniasis caused by Leishmania (Leishmania) enriettii affects guinea pigs (Cavia porcellus) in Brazil, mainly in the Southerm part of the country. Affected guinea pigs develop ulcerated crusty nodules or masses over the ears, lips, pawns, scrotum, vulva, and periorbital region. This paper reports an outbreak of mucocutaneous leishmaniasis diagnosed in guinea pigs from a premises located in the municipality of Santa Maria, Rio Grande do Sul, Brazil. The diagnosis was made based on epidemiological, clinical, clinicopathological and ultrastructural findings(AU)


Assuntos
Animais , Leishmaniose Mucocutânea/patologia , Leishmaniose Mucocutânea/parasitologia , Leishmaniose Mucocutânea/veterinária , Leishmaniose
19.
Artigo em Português | VETINDEX | ID: biblio-1485054

Resumo

A leishmaniose mucocutânea causada por Leishmania (Leishmania) enriettii afeta Cobaios (Cavia porcellus) no Brasil, principalmente no sul do país. Os animais afetados desenvolvem nódulos ou massas ulceradas e crostosas nas orelhas, focinho, lábios, patas, escroto, vulva e ao redor dos olhos. Este relato descreve um surto de leishmaniose mucocutânea diagnosticado em cobaios de uma propriedade localizada em Santa Maria, Rio Grande do Sul, Brasil. O diagnóstico foi realizado pela associação dos achados epidemiológicos, clínicos, citopatológicos, histopatológicas e de microscopia eletrônica de transmissão


Mucocutaneous leishmaniasis caused by Leishmania (Leishmania) enriettii affects guinea pigs (Cavia porcellus) in Brazil, mainly in the Southerm part of the country. Affected guinea pigs develop ulcerated crusty nodules or masses over the ears, lips, pawns, scrotum, vulva, and periorbital region. This paper reports an outbreak of mucocutaneous leishmaniasis diagnosed in guinea pigs from a premises located in the municipality of Santa Maria, Rio Grande do Sul, Brazil. The diagnosis was made based on epidemiological, clinical, clinicopathological and ultrastructural findings


Assuntos
Animais , Leishmaniose , Leishmaniose Mucocutânea/parasitologia , Leishmaniose Mucocutânea/patologia , Leishmaniose Mucocutânea/veterinária
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA