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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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INIA La Estanzuela (LE) |
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
13/05/2019 |
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Actualizado : |
23/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
LOPES, J.R.G.; ARAÚJO, J.A.S.; DANIELLE A.N. PESSOA; LEE, S.; RIET-CORREA, F.; MEDEIROS, R.M.T. |
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Afiliación : |
JOSÉ R.G. LOPES, Hospital Veterinário, Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Brazil.; JOSÉ A.S. ARAÚJO, Escola Superior Batista do Amazonas (ESBAM), Brazil.; DANIELLE A.N. PESSOA, Hospital Veterinário, Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Brazil.; STEPHEN LEE, Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, University Hill Way, USA.; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.//Hospital Veterinário, Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Brazil.; ROSANE M.T. MEDEIROS, Hospital Veterinário, Centro de Saúde e Tecnologia Rural (CSTR), Universidade Federal de Campina Grande (UFCG), Brazil. |
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Título : |
Neonatal mortality associated with sodium monofluoracetate in kids fed with colostrum from goats ingesting Amorimia septentrionalis. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Pesquisa Veterinaria Brasileira, 39(3):163-167, March 2019.OPEN ACCESS. |
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DOI : |
10.1590/1678-5150-PVB-5949 |
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Idioma : |
Inglés |
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Notas : |
Article History: Received on September 3, 2018.// Accepted for publication on October 9, 2019. |
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Contenido : |
ABSTRACT:Sudden deaths after colostrum ingestion in kids and lambs born to mothers grazing in areas with Amorimia septentrionalis have been reported in the Brazilian northeastern semi-arid region, in Paraíba state. This study aimed to determine whether the sodium monofluoracetate (MF) contained in A. septentrionalis is eliminated in milk, causing the death of kids. After confirming gestation on the 25th day after mating, 26 goats were randomly distributed into three groups. In Group 1, eight goats received fresh leaves of A. septentrionalis in daily doses of 1g/kg body weight, administered at three different periods during gestation: from days 91 to 100, 116 to 125, and from day 140 until delivery day. In Group 2, consisting of 10 females, eight goats received 1g/kg body weight of A. septentrionalis dried and milled leaves, fed daily from the 140th day of gestation until delivery. The other two goats of this group did not ingest the plant during gestation and after delivery the colostrum supplied to their kids was replaced by colostrum of goats from that same group that had ingested the plant. Eight goats from Group 3 (control) did not ingest A. septentrionalis. Seven goats from Group 1 showed signs of poisoning from 2nd to 8th days of plant administration, in all periods, and recovered within 7 to 12 days. Another goat presented severe clinical signs and was submitted to euthanasia in extremis. Two goats aborted. Four kids, from two goats, received colostrum and, after 15 minutes, presented depression, breathing wheezing, lateral recumbence, bleating, and death. Two goats gave birth at night; the two kids were found dead and, at necropsy, it was verified that they were born alive. The last goat in this group gave birth to two kids which showed no signs of poisoning after colostrum ingestion. In Group 2, the eight goats that ingested dry leaves of the plant presented tachycardia and engorgement of the jugular veins; six aborted, and the kids of the other two goats died immediately after delivery without ingesting colostrum. The three kids of the two goats that did not ingest the plant during gestation did not show signs of poisoning after ingesting colostrum from the goats that had ingested the plant. In Group 3, all females kidded normally and the kids showed no signs of poisoning. Ten leaf samples of A. septentrionalis contained 0.00074% ±0.00018 MF. These results demonstrate that the MF of A. septentrionalis is eliminated in colostrum and may cause the death of kids. As in previous reports, the plant also caused abortion.
RESUMO:
Mortes súbitas, após a ingestão do colostro, em cabritos e cordeiros nascidos de mães que pastejam em áreas com Amorimia septentrionalis são relatadas no semiárido da Paraíba. O objetivo deste trabalho foi determinar se o monofluoracetato de sódio (MF) contido em Amorimia septentrionalis é eliminado pelo leite, causando a morte dos cabritos. Após a confirmação da gestação no 25º dia após a cobertura, 26 cabras foram aleatoriamente distribuídas em três grupos. No Grupo 1, oito cabras receberam folhas frescas de A. septentrionalis em doses diárias de 1g/kg de peso vivo, administradas em três períodos diferentes durante a gestação: entre os dias 91 a 100, 116 a 125 e do 140º dia até o parto. No Grupo 2, composto por 10 fêmeas, oito cabras receberam 1g/kg de peso vivo de folhas secas e trituradas de A. septentrionalis, fornecida diariamente do 140º dia de gestação até o parto. As outras duas cabras desse grupo não ingeriram a planta durante a gestação e, ao parirem, o colostro fornecido aos seus cabritos foi substituído pelo colostro de cabras, desse mesmo grupo, que ingeriram a planta. Oito cabras do Grupo 3 (controle) não ingeriram A. septentrionalis. Sete cabras do Grupo 1 apresentaram sinais de intoxicação entre o 2º e 8º dia de administração da planta, em todos os períodos, e se recuperavam em 7 a 12 dias. Outra apresentou sinais clínicos graves e foi eutanasiada in extremis. Duas cabras abortaram. Quatro cabritos, oriundos de duas cabras, receberam colostro e, após 15 minutos, apresentaram depressão, respiração ofegante, decúbito lateral, berros e morte. Dois cabritos, nascidos de duas cabras que pariram durante a noite, foram encontrados mortos e os achados de necropsia permitem afirmar que nasceram vivos. A outra cabra desse grupo pariu dois cabritos que, mesmo mamando o colostro, não apresentaram sinais de intoxicação. No Grupo 2, as oito cabras que ingeriram a planta seca apresentaram taquicardia e ingurgitamento das veias jugulares; seis abortaram e os cabritos das outras duas morreram imediatamente após o parto, sem ingerir colostro. Os três filhotes das duas cabras que não ingeriram a planta durante a gestação não apresentaram sinais de intoxicação após ter ingerido colostro das cabras que tinham ingerido a planta. No Grupo 3, todas as fêmeas pariram normalmente e os filhotes não apresentaram sinais de intoxicação. Dez amostras de folhas de A. septentrionalis continham 0,00074% ± 0,00018 de MF. Estes resultados demonstram que o MF de A. septentrionalis, além de causar abortos, é eliminado pelo colostro podendo causar a morte dos cabritos. MenosABSTRACT:Sudden deaths after colostrum ingestion in kids and lambs born to mothers grazing in areas with Amorimia septentrionalis have been reported in the Brazilian northeastern semi-arid region, in Paraíba state. This study aimed to determine whether the sodium monofluoracetate (MF) contained in A. septentrionalis is eliminated in milk, causing the death of kids. After confirming gestation on the 25th day after mating, 26 goats were randomly distributed into three groups. In Group 1, eight goats received fresh leaves of A. septentrionalis in daily doses of 1g/kg body weight, administered at three different periods during gestation: from days 91 to 100, 116 to 125, and from day 140 until delivery day. In Group 2, consisting of 10 females, eight goats received 1g/kg body weight of A. septentrionalis dried and milled leaves, fed daily from the 140th day of gestation until delivery. The other two goats of this group did not ingest the plant during gestation and after delivery the colostrum supplied to their kids was replaced by colostrum of goats from that same group that had ingested the plant. Eight goats from Group 3 (control) did not ingest A. septentrionalis. Seven goats from Group 1 showed signs of poisoning from 2nd to 8th days of plant administration, in all periods, and recovered within 7 to 12 days. Another goat presented severe clinical signs and was submitted to euthanasia in extremis. Two goats aborted. Four kids, from two goats, received colostrum and, after 15 m... Presentar Todo |
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Palabras claves : |
ABORTION; ABORTO; AMORIMIA SEPTENTRIONALIS; CALOSTRO; COLOSTRUM; GOATS; KIDS; MONOFLUOROACETATO DE SODIO; MORTALIDAD NEONATAL; NEONATAL MORTALITY; PLATAFORMA SALUD ANIMAL; SALUD ANIMAL; SODIUM MONOFLUORACETATE; TOXINAS EN LA LECHE; TOXINS IN MILK. |
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Thesagro : |
ABORTO; BRASIL; CABRAS; TOXICIDAD POR INGESTION. |
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Asunto categoría : |
L73 Enfermedades de los animales |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12656/1/Pesq.-Vet.-Bras.-393-163-167-2019.-Lopes-et-al.pdf
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Marc : |
LEADER 06594naa a2200433 a 4500
001 1059762
005 2019-10-23
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1590/1678-5150-PVB-5949$2DOI
100 1 $aLOPES, J.R.G.
245 $aNeonatal mortality associated with sodium monofluoracetate in kids fed with colostrum from goats ingesting Amorimia septentrionalis.$h[electronic resource]
260 $c2019
500 $aArticle History: Received on September 3, 2018.// Accepted for publication on October 9, 2019.
520 $aABSTRACT:Sudden deaths after colostrum ingestion in kids and lambs born to mothers grazing in areas with Amorimia septentrionalis have been reported in the Brazilian northeastern semi-arid region, in Paraíba state. This study aimed to determine whether the sodium monofluoracetate (MF) contained in A. septentrionalis is eliminated in milk, causing the death of kids. After confirming gestation on the 25th day after mating, 26 goats were randomly distributed into three groups. In Group 1, eight goats received fresh leaves of A. septentrionalis in daily doses of 1g/kg body weight, administered at three different periods during gestation: from days 91 to 100, 116 to 125, and from day 140 until delivery day. In Group 2, consisting of 10 females, eight goats received 1g/kg body weight of A. septentrionalis dried and milled leaves, fed daily from the 140th day of gestation until delivery. The other two goats of this group did not ingest the plant during gestation and after delivery the colostrum supplied to their kids was replaced by colostrum of goats from that same group that had ingested the plant. Eight goats from Group 3 (control) did not ingest A. septentrionalis. Seven goats from Group 1 showed signs of poisoning from 2nd to 8th days of plant administration, in all periods, and recovered within 7 to 12 days. Another goat presented severe clinical signs and was submitted to euthanasia in extremis. Two goats aborted. Four kids, from two goats, received colostrum and, after 15 minutes, presented depression, breathing wheezing, lateral recumbence, bleating, and death. Two goats gave birth at night; the two kids were found dead and, at necropsy, it was verified that they were born alive. The last goat in this group gave birth to two kids which showed no signs of poisoning after colostrum ingestion. In Group 2, the eight goats that ingested dry leaves of the plant presented tachycardia and engorgement of the jugular veins; six aborted, and the kids of the other two goats died immediately after delivery without ingesting colostrum. The three kids of the two goats that did not ingest the plant during gestation did not show signs of poisoning after ingesting colostrum from the goats that had ingested the plant. In Group 3, all females kidded normally and the kids showed no signs of poisoning. Ten leaf samples of A. septentrionalis contained 0.00074% ±0.00018 MF. These results demonstrate that the MF of A. septentrionalis is eliminated in colostrum and may cause the death of kids. As in previous reports, the plant also caused abortion. RESUMO: Mortes súbitas, após a ingestão do colostro, em cabritos e cordeiros nascidos de mães que pastejam em áreas com Amorimia septentrionalis são relatadas no semiárido da Paraíba. O objetivo deste trabalho foi determinar se o monofluoracetato de sódio (MF) contido em Amorimia septentrionalis é eliminado pelo leite, causando a morte dos cabritos. Após a confirmação da gestação no 25º dia após a cobertura, 26 cabras foram aleatoriamente distribuídas em três grupos. No Grupo 1, oito cabras receberam folhas frescas de A. septentrionalis em doses diárias de 1g/kg de peso vivo, administradas em três períodos diferentes durante a gestação: entre os dias 91 a 100, 116 a 125 e do 140º dia até o parto. No Grupo 2, composto por 10 fêmeas, oito cabras receberam 1g/kg de peso vivo de folhas secas e trituradas de A. septentrionalis, fornecida diariamente do 140º dia de gestação até o parto. As outras duas cabras desse grupo não ingeriram a planta durante a gestação e, ao parirem, o colostro fornecido aos seus cabritos foi substituído pelo colostro de cabras, desse mesmo grupo, que ingeriram a planta. Oito cabras do Grupo 3 (controle) não ingeriram A. septentrionalis. Sete cabras do Grupo 1 apresentaram sinais de intoxicação entre o 2º e 8º dia de administração da planta, em todos os períodos, e se recuperavam em 7 a 12 dias. Outra apresentou sinais clínicos graves e foi eutanasiada in extremis. Duas cabras abortaram. Quatro cabritos, oriundos de duas cabras, receberam colostro e, após 15 minutos, apresentaram depressão, respiração ofegante, decúbito lateral, berros e morte. Dois cabritos, nascidos de duas cabras que pariram durante a noite, foram encontrados mortos e os achados de necropsia permitem afirmar que nasceram vivos. A outra cabra desse grupo pariu dois cabritos que, mesmo mamando o colostro, não apresentaram sinais de intoxicação. No Grupo 2, as oito cabras que ingeriram a planta seca apresentaram taquicardia e ingurgitamento das veias jugulares; seis abortaram e os cabritos das outras duas morreram imediatamente após o parto, sem ingerir colostro. Os três filhotes das duas cabras que não ingeriram a planta durante a gestação não apresentaram sinais de intoxicação após ter ingerido colostro das cabras que tinham ingerido a planta. No Grupo 3, todas as fêmeas pariram normalmente e os filhotes não apresentaram sinais de intoxicação. Dez amostras de folhas de A. septentrionalis continham 0,00074% ± 0,00018 de MF. Estes resultados demonstram que o MF de A. septentrionalis, além de causar abortos, é eliminado pelo colostro podendo causar a morte dos cabritos.
650 $aABORTO
650 $aBRASIL
650 $aCABRAS
650 $aTOXICIDAD POR INGESTION
653 $aABORTION
653 $aABORTO
653 $aAMORIMIA SEPTENTRIONALIS
653 $aCALOSTRO
653 $aCOLOSTRUM
653 $aGOATS
653 $aKIDS
653 $aMONOFLUOROACETATO DE SODIO
653 $aMORTALIDAD NEONATAL
653 $aNEONATAL MORTALITY
653 $aPLATAFORMA SALUD ANIMAL
653 $aSALUD ANIMAL
653 $aSODIUM MONOFLUORACETATE
653 $aTOXINAS EN LA LECHE
653 $aTOXINS IN MILK
700 1 $aARAÚJO, J.A.S.
700 1 $aDANIELLE A.N. PESSOA
700 1 $aLEE, S.
700 1 $aRIET-CORREA, F.
700 1 $aMEDEIROS, R.M.T.
773 $tPesquisa Veterinaria Brasileira, 39(3):163-167, March 2019.OPEN ACCESS.
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