Resultado da pesquisa (100)

Termo utilizado na pesquisa Equine

#81 - Epidemiological aspects and anatomic distribuition of equine sarcoid in the state of Rio Grande do Sul, Brazil: 40 cases, 30(10):839-843

Abstract in English:

ABSTRACT.- Brum J.S., Souza T.M. & Barros C.S.L. 2010. [Epidemiological aspects and anatomic distribuition of equine sarcoid in the state of Rio Grande do Sul, Brazil: 40 cases.] Aspectos epidemiológicos e distribuição anatômica das diferentes formas clínicas do sarcoide equino no Rio Grande do Sul: 40 casos. Pesquisa Veterinária Brasileira 30(10):839-843. Programa de Pós-Graduação em Medicina Veterinária, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS 97105-900, Brazil. E-mail: julianasbrum@yahoo.com.br The files of histopathological exams carried out by the Laboratório de Patologia Veterinária of the Universidade Federal de Santa Maria (LPV-UFSM), between January 2000 and March 2010, were reviewed in search of cases of equine sarcoid. Forty cases were selected to determine epidemiological aspects and anatomical distribution of the various clinical forms of these neoplasms in horses from Rio Grande do Sul. Out of the cases in which the ages were registered in the histopathological reports, 73.0% (27/37) were 1 to 5-year-old horses. Multiple sarcoids were observed in most of the affected horses (29/40 [72.5%]). The fibroblastic form was most frequently observed and occurred in 42.2% (27/64) of the cases. In more than half of the cases (22/40 [55.0%]), sarcoids had a multifocal distribution. Twenty two (55%) out of the 40 horses evaluated had the tumors in the limbs.

Abstract in Portuguese:

RESUMO.- Brum J.S., Souza T.M. & Barros C.S.L. 2010. [Epidemiological aspects and anatomic distribuition of equine sarcoid in the state of Rio Grande do Sul, Brazil: 40 cases.] Aspectos epidemiológicos e distribuição anatômica das diferentes formas clínicas do sarcoide equino no Rio Grande do Sul: 40 casos. Pesquisa Veterinária Brasileira 30(10):839-843. Programa de Pós-Graduação em Medicina Veterinária, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS 97105-900, Brazil. E-mail: julianasbrum@yahoo.com.br Foram revisados todos os protocolos de exames histopatológicos, arquivados no Laboratório de Patologia Veterinária da Universidade Federal de Santa Maria (LPV-UFSM), realizados entre janeiro de 2000 e março de 2010, na busca de casos de sarcoide equino. Quarenta casos foram selecionados com o objetivo de determinar os aspectos epidemiológicos e a distribuição anatômica das diferentes formas clínicas deste tumor em equinos no Rio Grande do Sul. Dos casos que tiveram suas idades anotadas nos protocolos, 73,0% (27/37) eram de equinos entre 1 e 5 anos de idade. Múltiplos sarcoides foram observados na maioria dos equinos afetados (29/40 [72,5%]). A forma clínica mais observada foi a fibroblástica, que ocorreu em 42,2% (27/64) dos casos. Em mais da metade dos casos (22/40 [55,0%]), os sarcoides tinham distribuição multifocal. Equinos que apresentavam tumores nos membros totalizaram 22 dos 40 (55%) casos analisados.


#82 - Equine neosporosis: occurrence of antibodies against Neospora spp. and association between the serological status of the mares and of their offspring, 30(8):641-645

Abstract in English:

ABSTRACT.- Toscan G., Cadore G.C., Pereira R.C.F., Silva G.B., Cezar A.S., Sangioni L.A., Oliveira L.S.S. & Vogel F.S.F. 2010. [Equine neosporosis: occurrence of antibodies against Neospora spp. and association between the serological status of the mares and of their offspring.] Neosporose equina: ocorrência de anticorpos anti-Neospora spp. e associação entre o status sorológico de éguas e de suas crias. Pesquisa Veterinária Brasileira 30(8):641-645. Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima 1000, Prédio 44, Camobi, Santa Maria, RS 97105-900, Brazil. E-mail: gugatoscan@hotmail.com Neospora caninum and N. hughesi are protozoa which can infect horses and can cause reproductive and neurological diseases, respectively. The pathogenesis of neosporosis in horses is poorly understood, as well as the sources of horizontal infection of N. hughesi. Furthermore, there are doubts about the role of the vertical transmission of Neospora spp. in maintenance of these parasites in equine populations. In this study, we evaluated: (1) the occurrence of infections by Neospora spp. in a population of mares (in reproductive age) on a farm of Crioula breed horses; and (2) the possible association between the serological status of mares and of their offspring, aiming to investigate, indirectly, the relevance of transplacental transmission for the occurrence of Neospora spp. in these horses. We found a highly significant association between the serological status of mares and their offspring. Although had been exposed to the same environmental risk factors, the descendants of seropositive mares had a higher percentage of seropositivity against Neospora spp. compared to the descendants of seronegative mares. The association between kinship and serological status indicates an influence of vertical (transplacental) infection raising the occurrence of Neospora spp. in the studied equine population.

Abstract in Portuguese:

RESUMO.- Toscan G., Cadore G.C., Pereira R.C.F., Silva G.B., Cezar A.S., Sangioni L.A., Oliveira L.S.S. & Vogel F.S.F. 2010. [Equine neosporosis: occurrence of antibodies against Neospora spp. and association between the serological status of the mares and of their offspring.] Neosporose equina: ocorrência de anticorpos anti-Neospora spp. e associação entre o status sorológico de éguas e de suas crias. Pesquisa Veterinária Brasileira 30(8):641-645. Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima 1000, Prédio 44, Camobi, Santa Maria, RS 97105-900, Brazil. E-mail: gugatoscan@hotmail.com Os protozoários Neospora caninum e N. hughesi infectam os equinos e podem provocar diferentes sinais clínicos associados a problemas reprodutivos ou a distúrbios neurológicos, respectivamente. A patogenia da neosporose é pouco conhecida nos equinos, bem como as fontes de infecção horizontal de N. hughesi. Além disso, há dúvidas quanto ao papel da transmissão vertical de Neospora spp. na sua manutenção em populações equinas. Neste estudo avaliaram-se: (1) a ocorrência da infecção por Neospora spp. na população de éguas em idade reprodutiva em um haras de cavalos da raça Crioula; e (2) a possível associação entre o status sorológico destas éguas com o de suas crias, como meio de investigar, indiretamente, a relevância da transmissão transplacentária na ocorrência da infecção por Neospora spp. nestes animais. A associação entre o status sorológico das éguas e o de suas crias foi altamente significativa. Os animais descendentes de éguas soropositivas tiveram maior ocorrência de anticorpos anti-Neospora spp. do que os descendentes de éguas soronegativas, embora expostos aos mesmos fatores de risco ambientais. A associação entre parentesco em primeiro grau e status sorológico indica a influência da infecção vertical (transplacentária) na ocorrência de Neospora spp. na população equina estudada.


#83 - In vitro inibition and reversion of equine platelet aggregation using ketoprophen, phenylbutazone and flunixin meglumin, 29(10):803-808

Abstract in English:

RESUMO.- Paes Leme F.O., Wurzinger L., Alves G.E.S., Costa-Val A.P., Pinotti M.B., Paes P.R.O. & Oliveira M.E.C. 2009. [In vitro inibition and reversion of equine platelet aggregation using ketoprophen, phenylbutazone and flunixin meglumin.] Inibição e reversão da agregação plaquetária de eqüinos in vitro com o uso de ketoprofeno, fenilbutazona e flunixim meglumine. Pesquisa Veterinária Brasileira 29(10):803-808. Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, MG 30123-970, Brazil. E-mail: fabiola@vet.ufmg.br Como são várias as enfermidades e os distúrbios que induzem à hipercoagulabilidade e à pré-ativação de plaquetas em eqüinos. A atividade de medicamentos utilizados para controle dessas enfermidades sobre a agregação de plaquetas pode, não apenas servir para avaliar sua evolução, como também a resposta terapêutica. Com o objetivo de avaliar a prevenção e a reversão da agregação plaquetária de eqüinos in vitro foram utilizados os antiinflamatórios não esteroidais (AINES): ketoprofeno, fenilbutazona e flunixim meglumine. A comparação demonstrou que a fenilbutazona e o ketoprofeno previnem a agregação de plaquetas de eqüinos induzida pelo ADP, de forma mais eficaz do que o flunixim-meglumine e, superior ao fragmento monoclonal de anticorpo Reopro, sendo semelhante a dos bloqueadores de receptores de membrana Ro-438857 e RGDS. Quanto a reverão da agregação plaquetária tanto a fenilbutazona quanto o ketoprofeno demonstraram efeitos dose-dependente.

Abstract in Portuguese:

ABSTRACT.- Paes Leme F.O., Wurzinger L., Alves G.E.S., Costa-Val A.P., Pinotti M.B., Paes P.R.O. & Oliveira M.E.C. 2009. [In vitro inibition and reversion of equine platelet aggregation using ketoprophen, phenylbutazone and flunixin meglumin.] Inibição e reversão da agregação plaquetária de eqüinos in vitro com o uso de ketoprofeno, fenilbutazona e flunixim meglumine. Pesquisa Veterinária Brasileira 29(10):803-808. Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, MG 30123-970, Brazil. E-mail: fabiola@vet.ufmg.br Several diseases may lead to platelet pre-activation and hypercoagulability states in horses. The activity of many drugs against platelet aggregation may, not only contribute to the evaluation of a disease but also its response to the therapy. With the aim to study in vitro prevention and reversion of platelet aggregation, the non steroidal anti-inflammatory drug (NSAID): ketoprophen, phenylbutazone and flunixin-meglumin were evaluated. The comparison demonstrated that phenylbutazone and ketoprophen prevented platelet aggregation induced by ADP better than flunixin-meglumin, in a superior manner to the monoclonal antibody Reopro, and in a better way than the membrane receptor blockers Ro-438857 and RGDS. The reversion of platelet aggregation demonstrated that even phenylbutazone or ketoprophen have a dose-dependent effect.


#84 - Physical, biochemical and cytological characteristics of the equine temporomandibular joint synovial fluid, 29(10):829-833

Abstract in English:

RESUMO.- Fonseca F.A., Zambrano R.S., Dias G.M.B., Lima E.M.M., Alves G.E.S. & Godoy R.F. 2009. [Physical, biochemical and cytological characteristics of the equine temporomandibular joint synovial fluid.] Características fisicoquímicas e citológicas do líquido sinovial da articulação temporomandibular em eqüinos. Pesquisa Veterinária Brasileira 29(10):829-833. Hospital Veterinário de Grandes Animais, Faculdade de Agronomia e Veterinária, Universidade de Brasília, Brasília, DF 70636-200, Brazil. E-mail: robertagodoy@unb.br Foram estudadas as características fisicoquímicas e citológicas do líquido sinovial da articulação temporomandibular de dez eqüinos hígidos. Verificou-se que o líquido é viscoso, amarelo claro a citrino, límpido e livre de partículas à temperatura ambiente. Houve contaminação da amostra por sangue em três amostras que se apresentaram amarelo avermelhadas a vermelhas e de aspecto turvo. A taxa de glicose variou entre 100 e 250 e a concentração protéica não ultrapassou 3,8g/dL. O número médio de células nucleadas foi de 417 células/µL, com predominância de grandes células mononucleares e linfócitos. As mensurações das características pesquisadas no líquido sinovial da articulação temporomandibular de eqüinos são de execução simples e passíveis de implantação na rotina de atendimentos clínico-cirúrgicos.

Abstract in Portuguese:

ABSTRACT.- Fonseca F.A., Zambrano R.S., Dias G.M.B., Lima E.M.M., Alves G.E.S. & Godoy R.F. 2009. [Physical, biochemical and cytological characteristics of the equine temporomandibular joint synovial fluid.] Características fisicoquímicas e citológicas do líquido sinovial da articulação temporomandibular em eqüinos. Pesquisa Veterinária Brasileira 29(10):829-833. Hospital Veterinário de Grandes Animais, Faculdade de Agronomia e Veterinária, Universidade de Brasília, Brasília, DF 70636-200, Brazil. E-mail: robertagodoy@unb.br Physical, biochemical and cytological characteristics of the temporomandibular joint synovial fluid were studied in ten clinically normal horses. It is a viscous, pale yellow, clear fluid and without flocculent material at room temperature. There was blood contamination in three samples, they presented red-yellow to red and cloudy. The range of glucose levels were 100 to 250 and its protein concentration was up to 3,8g/dL. Nucleated cells mean number was 417 cells/µL, with predominating large mononuclear cells and lymphocytes. Equine temporomandibular synovial fluids can be easily evaluated, being feasible in clinical and surgical routine, and the information may be useful to the diagnosis, treatment and prognosis of animals with temporomandibular alterations.


#85 - Doenças do sistema nervoso central de equídeos no semi-árido, p.589-597

Abstract in English:

ABSTRACT.- Pimentel L.A., Oliveira D.M., Galiza G.J.N., Rego R.O., Dantas A.F.M. & Riet-Correa F. 2009. [Diseases of the central nervous system in equidae in the Brazilian semiarid.] Doenças do sistema nervoso central de equídeos no semi-árido. Pesquisa Veterinária Brasileira 29(7):589-597. Hospital Veterinário, Universidade Federal de Campina Grande, Campus de Patos, Patos, PB 58700-000, Brazil. E-mail: franklin.riet@pq.cnpq.br Diseases of the central nervous system (CNS) in equidae are important in these species, and their knowledge in the different Brazilian regions is necessary to determine efficient control and preventive measures. This paper reports epidemiologic aspects, clinical signs and pathology of diseases of the CNS in equidae diagnosed by the Veterinary Pathology Laboratory at the Federal University of Campina Grande in the city of Patos, state of Paraíba, northeastern Brazil, during 2002-2008. During the period, 159 cases or outbreaks of those diseases were studied, 49 (30.8%) affecting the CNS. Hepatic encephalopathy caused by Crotalaria retusa poisoning, with 14 cases (28.5%), was the main disease observed. Tetanus was diagnosed in 13 (26.5%) cases and rabies in 11 (22.4%). In seven (14.2%) cases the death or euthanasia was due to traumatic lesions of the CNS. Also were diagnosed 1 case of leucoencephalomalacia, 1 case of encephalitis by equine herpesvirus-1, 1 case of intracarotid artery injection, 1 outbreak of Eastern equine encephalitis, 1 of Turbina cordata poisoning, and 1 of a tremogenic disease of unknown cause. In 5 cases the diagnosis was inconclusive. This paper indicates the importance of diagnostic veterinary laboratories, in the different Brazilian regions, for the knowledge of livestock diseases.

Abstract in Portuguese:

ABSTRACT.- Pimentel L.A., Oliveira D.M., Galiza G.J.N., Rego R.O., Dantas A.F.M. & Riet-Correa F. 2009. [Diseases of the central nervous system in equidae in the Brazilian semiarid.] Doenças do sistema nervoso central de equídeos no semi-árido. Pesquisa Veterinária Brasileira 29(7):589-597. Hospital Veterinário, Universidade Federal de Campina Grande, Campus de Patos, Patos, PB 58700-000, Brazil. E-mail: franklin.riet@pq.cnpq.br Diseases of the central nervous system (CNS) in equidae are important in these species, and their knowledge in the different Brazilian regions is necessary to determine efficient control and preventive measures. This paper reports epidemiologic aspects, clinical signs and pathology of diseases of the CNS in equidae diagnosed by the Veterinary Pathology Laboratory at the Federal University of Campina Grande in the city of Patos, state of Paraíba, northeastern Brazil, during 2002-2008. During the period, 159 cases or outbreaks of those diseases were studied, 49 (30.8%) affecting the CNS. Hepatic encephalopathy caused by Crotalaria retusa poisoning, with 14 cases (28.5%), was the main disease observed. Tetanus was diagnosed in 13 (26.5%) cases and rabies in 11 (22.4%). In seven (14.2%) cases the death or euthanasia was due to traumatic lesions of the CNS. Also were diagnosed 1 case of leucoencephalomalacia, 1 case of encephalitis by equine herpesvirus-1, 1 case of intracarotid artery injection, 1 outbreak of Eastern equine encephalitis, 1 of Turbina cordata poisoning, and 1 of a tremogenic disease of unknown cause. In 5 cases the diagnosis was inconclusive. This paper indicates the importance of diagnostic veterinary laboratories, in the different Brazilian regions, for the knowledge of livestock diseases.


#86 - Utilização da glutamina no tratamento de lesões de isquemia e reperfusão no jejuno em eqüinos, p.246-252

Abstract in English:

ABSTRACT.- Pagliosa G.M., Alves G.E.S., Faleiros R.R., Matos J.R.T., Torres M.B., Mendes H.M.F. & Costa R.S. 2009. [Use of glutamine to treatment of ischemia and reperfusion lesions in equine jejune.] Utilização da glutamina no tratamento de lesões de isquemia e reperfusão no jejuno em eqüinos. Pesquisa Veterinária Brasileira 29(3):246-252. Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Ave-nida Antônio Carlos 6627, Caixa Postal 567, Belo Horizonte, MG 30123-970, Brazil. E-mail: geanepagliosa@gmail.com Under general anesthesia and arterial pressure control, twelve horses were submitted simultaneously to intraluminal distension and venous ischemia of jejune for 2 hours, followed by 12 hours of reperfusion. Six horses were treated with intravenous 2% glutamine (50mg/kg), and six others were treated with the same volume of saline solution 1h after the beginning of ischemia and 6 hours after reperfusion. Intestinal samples were collected before and after 2 hours of ischemia and after 2 and 12 hours of reperfusion, and were submitted to hystopatological analyses, ultrastructural examination, measurement of area and number of villi per mm2, and to myeloperoxidases activity. No statistical differences between the groups were found. It was concluded that glutamine did not attenuate the ischemia and reperfusion lesions under the methodology used in this study.

Abstract in Portuguese:

ABSTRACT.- Pagliosa G.M., Alves G.E.S., Faleiros R.R., Matos J.R.T., Torres M.B., Mendes H.M.F. & Costa R.S. 2009. [Use of glutamine to treatment of ischemia and reperfusion lesions in equine jejune.] Utilização da glutamina no tratamento de lesões de isquemia e reperfusão no jejuno em eqüinos. Pesquisa Veterinária Brasileira 29(3):246-252. Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Ave-nida Antônio Carlos 6627, Caixa Postal 567, Belo Horizonte, MG 30123-970, Brazil. E-mail: geanepagliosa@gmail.com Under general anesthesia and arterial pressure control, twelve horses were submitted simultaneously to intraluminal distension and venous ischemia of jejune for 2 hours, followed by 12 hours of reperfusion. Six horses were treated with intravenous 2% glutamine (50mg/kg), and six others were treated with the same volume of saline solution 1h after the beginning of ischemia and 6 hours after reperfusion. Intestinal samples were collected before and after 2 hours of ischemia and after 2 and 12 hours of reperfusion, and were submitted to hystopatological analyses, ultrastructural examination, measurement of area and number of villi per mm2, and to myeloperoxidases activity. No statistical differences between the groups were found. It was concluded that glutamine did not attenuate the ischemia and reperfusion lesions under the methodology used in this study.


#87 - Survey on control and management practices of equine helminths infection, p.253-257

Abstract in English:

ABSTRACT.- Martins I.V.F., Verocai G.G., Correia T.R., Melo R.M.P.S., Pereira M.J.S., Scott F.B. & Grisi L. 2009. Survey on control and management practices of equine helminths infection. Pesquisa Veterinária Brasileira 29(3):253-257. Departamento de Medicina Veterinária, Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Cx. Postal 16, Alegre, ES 29500-000, Brazil. E-mail: isabella@cca.ufes.br Twenty-nine stud farms were selected in the Medium Paraíba region of the Rio de Janeiro state, Brazil. After an interview with the person responsible for the animals, faecal samples were collected from mares and analyzed via the EPG technique, faecal cultures, Sedimentation-centrifugo-flotation, and modified Ueno and Baermann techniques. The prevalence of helminths in the mares and in the stud farms was calculated. The stocking rates of pasture, change of horse bedding, absence of pasture rotation, absence of technology in the property, and less frequent treatment of the animals were associated with a greater prevalence of helminths, showing that these variables must be considered in equine control programs. The intensity of the parasitism was also associated with the stocking rate of pasture, absence of dunghill, presence of the animals only in paddocks, lack of technology in the property, less frequent treatment of the animals, and absence of the use of rotation regarding the anthelmintic class.

Abstract in Portuguese:

ABSTRACT.- Martins I.V.F., Verocai G.G., Correia T.R., Melo R.M.P.S., Pereira M.J.S., Scott F.B. & Grisi L. 2009. Survey on control and management practices of equine helminths infection. Pesquisa Veterinária Brasileira 29(3):253-257. Departamento de Medicina Veterinária, Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Cx. Postal 16, Alegre, ES 29500-000, Brazil. E-mail: isabella@cca.ufes.br Twenty-nine stud farms were selected in the Medium Paraíba region of the Rio de Janeiro state, Brazil. After an interview with the person responsible for the animals, faecal samples were collected from mares and analyzed via the EPG technique, faecal cultures, Sedimentation-centrifugo-flotation, and modified Ueno and Baermann techniques. The prevalence of helminths in the mares and in the stud farms was calculated. The stocking rates of pasture, change of horse bedding, absence of pasture rotation, absence of technology in the property, and less frequent treatment of the animals were associated with a greater prevalence of helminths, showing that these variables must be considered in equine control programs. The intensity of the parasitism was also associated with the stocking rate of pasture, absence of dunghill, presence of the animals only in paddocks, lack of technology in the property, less frequent treatment of the animals, and absence of the use of rotation regarding the anthelmintic class.


#88 - Características clínicas e histopatológicas da placa aural em eqüinos Mangalarga e Quarto de Milha, p.279-284

Abstract in English:

ABSTRACT.- Souza N.R., Adorno V.B., Marcondes J.S., Oliveira Filho J.P., Conceição L.G., Amorim R.L. & Borges A.S. 2008. [Clinical and histopathological characteristics of the aural plaque in Mangalarga and Quarter Horses.] Características clínicas e histopatológicas da placa aural em eqüinos Mangalarga e Quarto de Milha. Pesquisa Veterinária Brasileira 28(6):279-284. Departamento de Clínica Veterinária, Faculdade de Medicina Veterinária e Zootecnia, Unesp-Campus de Botucatu, Distrito de Rubião Júnior s/n, Botucatu, SP 18618000, Brazil. E-mail: zep.filho@hotmail.com Aural plaque is a variant of equine papillomatosis. Clinical examination was performed on 306 Mangalarga and 275 Quarter Horses to compare the occurrence of aural plaques among animals and to characterize clinical and histological findings for the disease. Aural plaques occurred in 57% of Mangalarga and in 35% of Quarter breeds. Clinically the lesions consisted of flat, desquamated and hypochromic plaques formed by coalescence of small papules. The main histopathological findings were epidermal hyperplasia and hypomelanosis with abrupt change between the normal and the affected epithelium.

Abstract in Portuguese:

ABSTRACT.- Souza N.R., Adorno V.B., Marcondes J.S., Oliveira Filho J.P., Conceição L.G., Amorim R.L. & Borges A.S. 2008. [Clinical and histopathological characteristics of the aural plaque in Mangalarga and Quarter Horses.] Características clínicas e histopatológicas da placa aural em eqüinos Mangalarga e Quarto de Milha. Pesquisa Veterinária Brasileira 28(6):279-284. Departamento de Clínica Veterinária, Faculdade de Medicina Veterinária e Zootecnia, Unesp-Campus de Botucatu, Distrito de Rubião Júnior s/n, Botucatu, SP 18618000, Brazil. E-mail: zep.filho@hotmail.com Aural plaque is a variant of equine papillomatosis. Clinical examination was performed on 306 Mangalarga and 275 Quarter Horses to compare the occurrence of aural plaques among animals and to characterize clinical and histological findings for the disease. Aural plaques occurred in 57% of Mangalarga and in 35% of Quarter breeds. Clinically the lesions consisted of flat, desquamated and hypochromic plaques formed by coalescence of small papules. The main histopathological findings were epidermal hyperplasia and hypomelanosis with abrupt change between the normal and the affected epithelium.


#89 - Influência do exercício na indução da apoptose e necrose das células do líquido sinovial de eqüinos atletas, p.231-236

Abstract in English:

ABSTRACT.- Rasera L., Massoco C.O., Landgraf R.G. & Baccarin R.Y.A. 2008. [Exercise induced apoptosis and necrosis in the synovial fluid cells of athletic horses.] Influência do exercício na indução da apoptose e necrose das células do líquido sinovial de eqüinos atletas. Pesquisa Veterinária Brasileira 28(5):231-236. Departamento de Clínica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, Butantan, São Paulo, SP 05508-270, Brazil. E-mail: baccarin@usp.br The effects of biomechanical stress on inflammatory and adaptative responses of articular tissues in athletic horses were investigated. Synovial fluid was collected from the metacarpophalangeal joints of athletic horses before exercise and 3, 6, 24 hours after exercise, and as well as from the control group (without exercise). Apoptosis/necrosis percentage, TNF-a and PGE2 were determined by annexin V/PI assay, bioassay (L929) and ELISA, respectively. The results showed that total leukocyte count was higher in the athletic group when is compared with the control group. Three hours after the exercise was done there were increases of cellular apoptosis (P>0.05) and necrosis (P<0.05) percentage, PGE2 concentration (P<0.05) and protein concentration (P<0.05), and the TNF-a level has dropped. The athletic group showed moderate level of joint inflammation after the strenuous exercise. This articular tissue response to biomechanical insult due to the exercise, with high intensity after 3 hours after training associated with normality after 24 hours, reveals the articular adaptation to physical stress in athletic horses.

Abstract in Portuguese:

ABSTRACT.- Rasera L., Massoco C.O., Landgraf R.G. & Baccarin R.Y.A. 2008. [Exercise induced apoptosis and necrosis in the synovial fluid cells of athletic horses.] Influência do exercício na indução da apoptose e necrose das células do líquido sinovial de eqüinos atletas. Pesquisa Veterinária Brasileira 28(5):231-236. Departamento de Clínica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva 87, Butantan, São Paulo, SP 05508-270, Brazil. E-mail: baccarin@usp.br The effects of biomechanical stress on inflammatory and adaptative responses of articular tissues in athletic horses were investigated. Synovial fluid was collected from the metacarpophalangeal joints of athletic horses before exercise and 3, 6, 24 hours after exercise, and as well as from the control group (without exercise). Apoptosis/necrosis percentage, TNF-a and PGE2 were determined by annexin V/PI assay, bioassay (L929) and ELISA, respectively. The results showed that total leukocyte count was higher in the athletic group when is compared with the control group. Three hours after the exercise was done there were increases of cellular apoptosis (P>0.05) and necrosis (P<0.05) percentage, PGE2 concentration (P<0.05) and protein concentration (P<0.05), and the TNF-a level has dropped. The athletic group showed moderate level of joint inflammation after the strenuous exercise. This articular tissue response to biomechanical insult due to the exercise, with high intensity after 3 hours after training associated with normality after 24 hours, reveals the articular adaptation to physical stress in athletic horses.


#90 - Ehrlichiose monocítica eqüina no Rio Grande do Sul: aspectos clínicos, anátomo-patológicos e epidemiológicos

Abstract in English:

ABSTRACT.- Coimbra H.S., Fernandes C.G., Soares M.P., Meireles M.C.A., Radamés R. & Schuch L.F.D. 2006. [Equine monocytic Ehrlichiosis in Rio Grande do Sul: clinical, pathological and epidemiological aspects.] Ehrlichiose monocítica eqüina no Rio Grande do Sul: aspectos clínicos, anátomo-patológicos e epidemiológicos. Pesquisa Veterinária Brasileira 26(2):97-101. Laboratório de Doenças Infecciosas, Faculdade de Veterinária, Universidade Federal de Pelotas, Campus Universitário, Pelotas, RS 96010-900, Brazil. E-mail: bitoxu@ig.com.br A spontaneous outbreak of equine monocytic Ehrlichiosis (EME) is described. The disease occurred from November 2001 to February 2002 on a farm in the municipality of Arroio Grande, located at the western edge of the Mirim Lake, state of Rio Grande do Sul. Out of 50 horses 13 were affected and 6 died. The morbidity was 26% and the mortality 46.1%. The affected horses were 1-5 years old. The most important clinical sign was a profuse acute diarrhea. At necropsy of a horse that died with clinical signs of the disease, the main alterations were characterized by hemorrhagic areas of the mucosa of the large intestine with liquid contents, and congested and hemorrhagic areas alternating with normal areas as well as nodules with purulent secretion in the mucosa of the small intestine. The histological changes were characterized by moderate mononuclear infiltration of the mucosa, characterizing a lympho-histiocytic enteritis with predominance of macrophages. In the jejunum and ileum, related to the invagination of crypts and villi, a granulomatous enteritis was observed. To confirm the diagnosis of infection by Neorickettsia (Ehrlichia) risticii, blood samples of seven affected horses were taken and a polimerase chain reaction (PCR) was performed. Three tested blood samples were positive (42.8%) with observation of a band of 529pb characteristic of N. risticii.

Abstract in Portuguese:

ABSTRACT.- Coimbra H.S., Fernandes C.G., Soares M.P., Meireles M.C.A., Radamés R. & Schuch L.F.D. 2006. [Equine monocytic Ehrlichiosis in Rio Grande do Sul: clinical, pathological and epidemiological aspects.] Ehrlichiose monocítica eqüina no Rio Grande do Sul: aspectos clínicos, anátomo-patológicos e epidemiológicos. Pesquisa Veterinária Brasileira 26(2):97-101. Laboratório de Doenças Infecciosas, Faculdade de Veterinária, Universidade Federal de Pelotas, Campus Universitário, Pelotas, RS 96010-900, Brazil. E-mail: bitoxu@ig.com.br A spontaneous outbreak of equine monocytic Ehrlichiosis (EME) is described. The disease occurred from November 2001 to February 2002 on a farm in the municipality of Arroio Grande, located at the western edge of the Mirim Lake, state of Rio Grande do Sul. Out of 50 horses 13 were affected and 6 died. The morbidity was 26% and the mortality 46.1%. The affected horses were 1-5 years old. The most important clinical sign was a profuse acute diarrhea. At necropsy of a horse that died with clinical signs of the disease, the main alterations were characterized by hemorrhagic areas of the mucosa of the large intestine with liquid contents, and congested and hemorrhagic areas alternating with normal areas as well as nodules with purulent secretion in the mucosa of the small intestine. The histological changes were characterized by moderate mononuclear infiltration of the mucosa, characterizing a lympho-histiocytic enteritis with predominance of macrophages. In the jejunum and ileum, related to the invagination of crypts and villi, a granulomatous enteritis was observed. To confirm the diagnosis of infection by Neorickettsia (Ehrlichia) risticii, blood samples of seven affected horses were taken and a polimerase chain reaction (PCR) was performed. Three tested blood samples were positive (42.8%) with observation of a band of 529pb characteristic of N. risticii.


Colégio Brasileiro de Patologia Animal SciELO Brasil CAPES CNPQ UFRRJ CFMV