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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 La Estanzuela. |
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Fecha actual : |
13/06/2018 |
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Actualizado : |
09/10/2019 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
NIEVES. C; HAMOND, C.; BURONI, F.; RIVERO, R.; SUANES, A.; SALABERRY, X.; MACÍAS-RIOSECO, M.; SILVEIRA, C.S.; GIANNITTI, F.; RIET-CORREA, F.; BUSCHIAZZO, A.; ZARANTONELLI, L. |
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Afiliación : |
CECILIA NIEVES, Laboratorio de Microbiología Molecular y Estructural. Unidad Mixta Pasteur + INIA (UMPI), Montevideo,Uruguay.; CAMILA HAMOND, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Unidad Mixta Pasteur + INIA (UMPI), Montevideo,Uruguay.; FLORENCIA BURONI, DILAVE "Miguel C. Rubino", Uruguay.; RODOLFO RIVERO, DILAVE "Miguel C.Rubino", Uruguay.; ALEJANDRA SUANES, DILAVE "Miguel C.Rubino", Uruguay.; XIMENA SALABERRY, DILAVE "Miguel C.Rubino", Uruguay.; MELISSA MACÍAS RIOSECO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINE DA SILVA SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO BUSCHIAZZO, Laboratorio de Microbiología Molecular y Estructural, Montevideo,Uruguay.; LETICIA ZARANTONELLI, Laboratorio de Microbiología Molecular y Estructural. Unidad Mixta Pasteur + INIA (UMPI), Montevideo,Uruguay. |
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Título : |
Aplicación de métodos moleculares para la identificación y genotipicación de especies patógenas de Leptospira en muestras clínicas de bovinos. |
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Fecha de publicación : |
2018 |
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Fuente / Imprenta : |
In: Jornadas Uruguayas de Buiatría, 46., 2018, Paysandú, Uy., Matto, C.; Delpiazzo, R.(Ed.). Trabajos presentados. Paysandú: Centro Médico Veterinario de Paysandú/Sociedad Uruguaya de Buiatría, 2018. |
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Páginas : |
p. 207-210. |
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Idioma : |
Español |
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Palabras claves : |
ABORTOS EN BOVINOS; L. INTERROGANS; PLATAFORMA SALUD ANIMAL; SALUD ANIMAL. |
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Thesagro : |
ENFERMEDADES BACTERIANAS. |
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Asunto categoría : |
L73 Enfermedades de los animales |
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Marc : |
LEADER 01091naa a2200313 a 4500
001 1058705
005 2019-10-09
008 2018 bl uuuu u00u1 u #d
100 1 $aNIEVES. C
245 $aAplicación de métodos moleculares para la identificación y genotipicación de especies patógenas de Leptospira en muestras clínicas de bovinos.
260 $c2018
300 $ap. 207-210.
650 $aENFERMEDADES BACTERIANAS
653 $aABORTOS EN BOVINOS
653 $aL. INTERROGANS
653 $aPLATAFORMA SALUD ANIMAL
653 $aSALUD ANIMAL
700 1 $aHAMOND, C.
700 1 $aBURONI, F.
700 1 $aRIVERO, R.
700 1 $aSUANES, A.
700 1 $aSALABERRY, X.
700 1 $aMACÍAS-RIOSECO, M.
700 1 $aSILVEIRA, C.S.
700 1 $aGIANNITTI, F.
700 1 $aRIET-CORREA, F.
700 1 $aBUSCHIAZZO, A.
700 1 $aZARANTONELLI, L.
773 $tIn: Jornadas Uruguayas de Buiatría, 46., 2018, Paysandú, Uy., Matto, C.; Delpiazzo, R.(Ed.). Trabajos presentados. Paysandú: Centro Médico Veterinario de Paysandú/Sociedad Uruguaya de Buiatría, 2018.
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