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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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Registro original : |
INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
26/06/2019 |
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Tipo de producción científica : |
Documentos |
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Autor : |
INIA TACUAREMBÓ |
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Afiliación : |
ESTACIÓN EXPERIMENTAL DEL NORTE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Tecnologías de engorde de corderos pesados sobre mejoramientos de campo para el Basalto. 1. Efecto de la especie forrajera, la carga animal y la concentración de taninos condensados en la producción de carne ovina de calidad. |
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Fecha de publicación : |
2004 |
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Fuente / Imprenta : |
In: INIA TACUAREMBÓ. UNIDAD EXPERIMENTAL GLENCOE. DÍA DE CAMPO, 21 DE OCTUBRE, U.E. GLENCOE, PAYSANDÚ, 2004. Producción animal en suelos de basalto. Tacuarembó (Uruguay): INIA, 2004. |
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Páginas : |
p. 22-24 |
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Serie : |
(INIA Serie Actividades de Difusión ; 377) |
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Idioma : |
Español |
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Contenido : |
Evaluar el efecto de la especie forrajera, la carga animal y la concentración de taninos condensados en la producción y calidad de lana y carne de corderos pesados, sobre mejoramientos de campo para la región de Basalto, en dos años consecutivos. |
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Palabras claves : |
CORDERO PESADO; TANINOS CONDENSADOS. |
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Thesagro : |
CAMPO NATURAL; CARGA GANADERA; CORDERO; ENGORDE; PLANTAS FORRAJERAS; SUELO BASALTICO; TANINOS. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/9458/1/SAD-377p22-24.pdf
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Marc : |
LEADER 01280naa a2200253 a 4500
001 1025491
005 2019-06-26
008 2004 bl uuuu u00u1 u #d
100 1 $aINIA TACUAREMBÓ
245 $aTecnologías de engorde de corderos pesados sobre mejoramientos de campo para el Basalto. 1. Efecto de la especie forrajera, la carga animal y la concentración de taninos condensados en la producción de carne ovina de calidad.
260 $c2004
300 $ap. 22-24
490 $a(INIA Serie Actividades de Difusión ; 377)
520 $aEvaluar el efecto de la especie forrajera, la carga animal y la concentración de taninos condensados en la producción y calidad de lana y carne de corderos pesados, sobre mejoramientos de campo para la región de Basalto, en dos años consecutivos.
650 $aCAMPO NATURAL
650 $aCARGA GANADERA
650 $aCORDERO
650 $aENGORDE
650 $aPLANTAS FORRAJERAS
650 $aSUELO BASALTICO
650 $aTANINOS
653 $aCORDERO PESADO
653 $aTANINOS CONDENSADOS
773 $tIn: INIA TACUAREMBÓ. UNIDAD EXPERIMENTAL GLENCOE. DÍA DE CAMPO, 21 DE OCTUBRE, U.E. GLENCOE, PAYSANDÚ, 2004. Producción animal en suelos de basalto. Tacuarembó (Uruguay): INIA, 2004.
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INIA Tacuarembó (TBO) |
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