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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
02/03/2017 |
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Actualizado : |
07/03/2017 |
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Autor : |
GARCIA, J.P; GIANNITTI, F.; FINNIE, J.W.; MANAVIS, J. .; BEINGESSER, J.; ADAMS ,V.; ROOD, J.I.; UZAL, F.A. |
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Afiliación : |
FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Comparative Neuropathology of Ovine Enterotoxemia Produced by Clostridium perfringens Type D Wild-Type Strain CN1020 and Its Genetically Modified Derivatives. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Veterinary Pathology, 2015, v.52.n.6. p.1250-1253, 2015. |
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Idioma : |
Inglés |
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Contenido : |
Abstract
Clostridium perfringens type D causes enterotoxemia in sheep and goats. The disease is mediated by epsilon toxin (ETX), which affects the cerebrovascular endothelium, increasing vascular permeability and leading to cerebral edema. In the present study, we compared the distribution and severity of the cerebrovascular changes induced in lambs by C. perfringens type D strain CN1020, its isogenic etx null mutant, and the ETX-producing complemented mutant. We also applied histochemical and immunohistochemical markers to further characterize the brain lesions induced by ETX. Both ETX-producing strains induced extensive cerebrovascular damage that did not differ significantly between each other in nature, neuroanatomic distribution, or severity. By contrast, lambs inoculated with the etx mutant or sterile, nontoxic culture medium did not develop detectable brain lesions, confirming that the neuropathologic effects observed in these infections are dependent on ETX production. Lambs treated with the wild-type and complemented strains showed perivascular and mural vascular edema, as well as serum albumin extravasation, particularly severe in the cerebral white matter, midbrain, medulla oblongata, and cerebellum. Brains of animals inoculated with the ETX-producing strains showed decreased expression of glial fibrillary acidic protein and increased expression of aquaporin-4 in the end-feet processes of the astrocytes around blood vessels. Early axonal injury was demonstrated with anti?amyloid precursor protein immunohistochemistry. Perivascular accumulation of macrophages/microglia with intracytoplasmic albumin globules was also observed in these animals. This study demonstrates that ETX is responsible for the major cerebrovascular changes in C. perfringens type D?induced disease. MenosAbstract
Clostridium perfringens type D causes enterotoxemia in sheep and goats. The disease is mediated by epsilon toxin (ETX), which affects the cerebrovascular endothelium, increasing vascular permeability and leading to cerebral edema. In the present study, we compared the distribution and severity of the cerebrovascular changes induced in lambs by C. perfringens type D strain CN1020, its isogenic etx null mutant, and the ETX-producing complemented mutant. We also applied histochemical and immunohistochemical markers to further characterize the brain lesions induced by ETX. Both ETX-producing strains induced extensive cerebrovascular damage that did not differ significantly between each other in nature, neuroanatomic distribution, or severity. By contrast, lambs inoculated with the etx mutant or sterile, nontoxic culture medium did not develop detectable brain lesions, confirming that the neuropathologic effects observed in these infections are dependent on ETX production. Lambs treated with the wild-type and complemented strains showed perivascular and mural vascular edema, as well as serum albumin extravasation, particularly severe in the cerebral white matter, midbrain, medulla oblongata, and cerebellum. Brains of animals inoculated with the ETX-producing strains showed decreased expression of glial fibrillary acidic protein and increased expression of aquaporin-4 in the end-feet processes of the astrocytes around blood vessels. Early axonal injury was demonstrated wi... Presentar Todo |
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Thesagro : |
ENFERMEDADES DE LOS ANIMALES. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02512naa a2200217 a 4500
001 1056750
005 2017-03-07
008 2015 bl uuuu u00u1 u #d
100 1 $aGARCIA, J.P
245 $aComparative Neuropathology of Ovine Enterotoxemia Produced by Clostridium perfringens Type D Wild-Type Strain CN1020 and Its Genetically Modified Derivatives.$h[electronic resource]
260 $c2015
520 $aAbstract Clostridium perfringens type D causes enterotoxemia in sheep and goats. The disease is mediated by epsilon toxin (ETX), which affects the cerebrovascular endothelium, increasing vascular permeability and leading to cerebral edema. In the present study, we compared the distribution and severity of the cerebrovascular changes induced in lambs by C. perfringens type D strain CN1020, its isogenic etx null mutant, and the ETX-producing complemented mutant. We also applied histochemical and immunohistochemical markers to further characterize the brain lesions induced by ETX. Both ETX-producing strains induced extensive cerebrovascular damage that did not differ significantly between each other in nature, neuroanatomic distribution, or severity. By contrast, lambs inoculated with the etx mutant or sterile, nontoxic culture medium did not develop detectable brain lesions, confirming that the neuropathologic effects observed in these infections are dependent on ETX production. Lambs treated with the wild-type and complemented strains showed perivascular and mural vascular edema, as well as serum albumin extravasation, particularly severe in the cerebral white matter, midbrain, medulla oblongata, and cerebellum. Brains of animals inoculated with the ETX-producing strains showed decreased expression of glial fibrillary acidic protein and increased expression of aquaporin-4 in the end-feet processes of the astrocytes around blood vessels. Early axonal injury was demonstrated with anti?amyloid precursor protein immunohistochemistry. Perivascular accumulation of macrophages/microglia with intracytoplasmic albumin globules was also observed in these animals. This study demonstrates that ETX is responsible for the major cerebrovascular changes in C. perfringens type D?induced disease.
650 $aENFERMEDADES DE LOS ANIMALES
700 1 $aGIANNITTI, F.
700 1 $aFINNIE, J.W.
700 1 $aMANAVIS, J. .
700 1 $aBEINGESSER, J.
700 1 $aADAMS ,V.
700 1 $aROOD, J.I.
700 1 $aUZAL, F.A.
773 $tVeterinary Pathology, 2015$gv.52.n.6. p.1250-1253, 2015.
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| Registros recuperados : 7 | |
| 1. |  | ARRUDA, F. P. DE; CALDEIRA, F.H.B.; DUCATTI, K.R.; BEZERRA, K.S.; MARCOLONGO-PEREIRA, C.; LEE, S.T.; COOK, D.; RIET-CORREA, F.; COLODEL, E.M. Experimental poisoning by Niedenzuella stannea in cattle and corresponding detection of monofluoroacetate. Intoxicação experimental por Niedenzuella stannea em bovinos e correspondente detecção de monofluoroacetato Ciencia Rural, 2017, v. 47 (3), e20160761. Article History: Received 08.14.16 //Approved 10.13.16//Returned by the author 12.05.1.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas. |
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| 2. | | CALDEIRA, F. H. B.; ARRUDA, F. P. DE; ARRUDA, F. P. DE; SHENKEL, D. M.; MARCOLONGO-PEREIRA, C.; LEE, S. T.; COOK, D.; RIET-CORREA, F.; COLODEL, E. M. Intoxicação experimental por Niedenzuella stannea (Malpighiaceae) em ovinos. (Experimental poisoning by Niedenzuella stannea (Malpighiaceae) in sheep). Pesquisa Veterinária Brasileira, Brasília, DF v. 37, n. 7, p. 681-685, julho 2017. Article histoty:Recebido em 11 de agosto de 2016.//Aceito para publicação em 5 de dezembro de 2016| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela. |
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| 5. | | MACHADO, M.; QUEIROZ C.R.R.; WILSON T.M.; SOUSA D.E.R.; CASTRO M.B.; SARAVIA, A.; LEE S.T.; ARMIEN A.G.; BARROS S.S.; RIET-CORREA, F. Endemic Xanthium strumarium poisoning in cattle in flooded areas of the Araguari River, Minas Gerais, Brazil. Toxicon, 2021, volume 200, pages 23-29. Doi: https://doi.org/10.1016/j.toxicon.2021.06.019 Article history: Received 22 May 2021; Received in revised form 29 June 2021; Accepted 30 June 2021; Available online 2 July 2021.
Corresponding author: Riet-Correa, F.; Graduate Program in Animal Science in the Tropics, Escola de...| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA Las Brujas. |
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| 6. | | OLIVEIRA NETO, T. S. DE; RIET-CORREA, F.; LEE, S.T.; COOK, D.; SOUSA BARBOSA, F.M.; SILVA NETO, J.F. DA; DANTAS SIMOES, S.V.; BARBOSA LUCENA, R. Poisoning in goats by the monofluoracetate-containing plant Palicourea aeneofusca (Rubiaceae). Toxicon, v.135, p.12-16, 2017. Article history: Received 21 April 2017 / Received in revised form 27 May 2017 / Accepted 29 May 2017 / Available online 31 May 2017.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela. |
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| 7. | | PESSOA, D.A.N.; LOPES, J.R.G.; SOUZA, E.M.; CAMPOS, É.M.; MEDEIROS, R.M.T.; COOK, D.; LEE, S.T.; RIET-CORREA, F. Herbaspirillum seropedicae as a degrading bacterium of monofluoroacetate: effects of its inoculation in goats by ingesting Amorimia septentrionalis and the concentrations of this compound in plants sprayed with the bacterium. [Herbaspirillum seropedicae como bactéria degradadora de monofluoroacetato de sódio: efeitos de sua inoculação em caprinos ingerindo Amorimia septentrionalis e nas concentrações deste composto em plantas pulverizadas com a bactéria.] Pesquisa Veterinaria Brasileira, 2019, Volume 39, Issue 10, Pages 802-806. OPEN ACCESS. Doi: 10.1590/1678-5150-PVB-6305 Article history: Received: May 28, 2019 / Accepted: June 25, 2019 / Published online: December 02, 2019.
This work was funded by the CNPq Universal Project (Process 402140/2016-8).| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 7 | |
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