PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Campos K.F., De Oliveira C.H.S., Belo Reis A., Yamasaki E.M., Brito M.F., Andrade S.J.T., Duarte M.D. & Barbosa J.D. 2013. [Eastern equine encephalitis on Marajó Island, Pará state, Brazil.] Surto de encefalomielite equina Leste na Ilha de Marajó, Pará. Pesquisa Veterinária Brasileira 33(4):443-448. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br Nine cases of equine encephalomyelitis on Marajó Island, state of Pará, Brazil, were studied. The affected horses had difficulty to stand, walked in circles, with marked depression, closed eyelids, tongue paralysis, muscle tremors, bruxism, anorexia and dehydration. Some had their ear and eyelid reflexes diminished, decreased tongue tone and tachycardia; laid down frequently they kept their head on the chest. Often they were seen resting their head on tree trunks or fences. At necropsy, hemorrhages of the meninges and spinal cord, and in some animals also adhesion of the meninges were found. Histologically there was diffuse encephalitis affecting mainly the gray matter, with meningitis and choroiditis. Presence of perivascular cuffs consisting of mononuclear inflammatory cells was observed. From two horses the Eastern equine encephalitis virus was identified by semi-nested reverse transcription polymerase chain reaction (semi-nested RT-PCR).

• Equine encephalitis encefalomielite equina

Abstract in Portuguese:

RESUMO.- Campos K.F., De Oliveira C.H.S., Belo Reis A., Yamasaki E.M., Brito M.F., Andrade S.J.T., Duarte M.D. & Barbosa J.D. 2013. [Eastern equine encephalitis on Marajó Island, Pará state, Brazil.] Surto de encefalomielite equina Leste na Ilha de Marajó, Pará. Pesquisa Veterinária Brasileira 33(4):443-448. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br Nove casos de encefalomielite equina foram estudados na Ilha de Marajó, estado do Pará, Brasil. Os equinos apresentavam dificuldade em se manter em estação, andavam em círculo, tinham acentuada depressão, pálpebras cerradas, paralisia da língua, tremores musculares, bruxismo, anorexia e desidratação. Alguns apresentavam diminuição dos reflexos auricular, palpebral, de ameaça, diminuição do tônus da língua e taquicardia. Posição de auto-auscultação foi observada com frequência. Os animais muitas vezes eram encontrados apoiados em troncos e cercas para se manterem em estação. À necropsia verificou-se hemorragia das leptomeninges e da medula, alguns apresentaram ainda aderência das leptomeninges. À histopatologia verificou-se encefalite difusa que afetava principalmente a substância cinzenta, com meningite e coroidite. Foi observada perivasculite mononuclear. Em dois equinos identificou-se o vírus da encefalomielite equina Leste pela reação de Semi-Nested transcrição reversa de polimerase em cadeia (Semi-Nested RT-PCR).

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.

• Eastern equine encephalitis equine herpesvirus-1 hepatic encephalopaty intracarotid artery injection equine leucoencephalomalacia rabies tetanus

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.