Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona
Mice infected with about 90 cercariae of Schistosoma mansoni (LE strain) were treated during five consecutive days with dexamethasone (50 mg/Kg, subcutaneously), starting on the 42th day of infection. Groups of five mice were then daily sacrificed from the first day after onset of treatment until th...
Published in: | Revista do Instituto de Medicina Tropical de São Paulo |
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Language: | English |
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Universidade de São Paulo (USP)
1994
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Online Access: | https://doi.org/10.1590/S0036-46651994000200001 https://doaj.org/article/42337e1383414b6aa35b54a10f2d1cc5 |
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ftdoajarticles:oai:doaj.org/article:42337e1383414b6aa35b54a10f2d1cc5 2024-09-09T19:28:07+00:00 Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona Marco Victor Hermeto Rosilene Siray Bicalho Roney Elias da Silva Alan Lane de Melo Leógenes Horácio Pereira 1994-04-01T00:00:00Z https://doi.org/10.1590/S0036-46651994000200001 https://doaj.org/article/42337e1383414b6aa35b54a10f2d1cc5 EN eng Universidade de São Paulo (USP) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651994000200001 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46651994000200001 0036-4665 1678-9946 https://doaj.org/article/42337e1383414b6aa35b54a10f2d1cc5 Revista do Instituto de Medicina Tropical de São Paulo, Vol 36, Iss 2, Pp 99-103 (1994) Schistosoma mansoni Schistosomiasis Dexamethasone Glucocorticoids Immunossupression Oogram Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 1994 ftdoajarticles https://doi.org/10.1590/S0036-46651994000200001 2024-08-05T17:49:31Z Mice infected with about 90 cercariae of Schistosoma mansoni (LE strain) were treated during five consecutive days with dexamethasone (50 mg/Kg, subcutaneously), starting on the 42th day of infection. Groups of five mice were then daily sacrificed from the first day after onset of treatment until the first day after. The perfusion of the portal system was performed and a piece of the intestine was processed for qualitative and quantitative oograms. This treatment carries to larger numbers of eggs in the tissues of treated mice, when compared with untreated groups. No changes were observed in the kinetics of oviposition, as all stages of viable eggs were observed in the tissues of treated and control mice. These data reinforce the hypothesis of a partial blockade of the egg excretion in immunossupressed mice. Camundongos infectados com cerca de 90 cercárias da cepa LE de Schistosoma mansoni foram tratados durante 5 dias consecutivos com dexametasona (50mg/ Kg, subcutaneamente) a partir do 42º dia de infecção. Grupos de cinco camundongos foram sacrificados diariamente após o primeiro dia do início do tratamento até o primeiro dia após o término. A perfusão do sistema porta foi feita e fragmentos do intestino foram processados para a realização de oogramas qualitativos e quantitativos. O tratamento leva a um maior número de ovos nos tecidos dos camundongos tratados, se comparado com os grupos não tratados. Nenhuma mudança foi observada na cinética de oviposição, e ovos viáveis em todos os estádios evolutivos foram observados nos tecidos de camundongos tratados e controles. Estes dados reforçam a hipótese de um bloqueio parcial na saída de ovos dos tecidos do intestino para o lúmem intestinal em camundongos imunossuprimidos. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic The Portal ENVELOPE(159.167,159.167,-78.100,-78.100) Revista do Instituto de Medicina Tropical de São Paulo 36 2 99 103 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Schistosoma mansoni Schistosomiasis Dexamethasone Glucocorticoids Immunossupression Oogram Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Schistosoma mansoni Schistosomiasis Dexamethasone Glucocorticoids Immunossupression Oogram Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Marco Victor Hermeto Rosilene Siray Bicalho Roney Elias da Silva Alan Lane de Melo Leógenes Horácio Pereira Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
topic_facet |
Schistosoma mansoni Schistosomiasis Dexamethasone Glucocorticoids Immunossupression Oogram Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Mice infected with about 90 cercariae of Schistosoma mansoni (LE strain) were treated during five consecutive days with dexamethasone (50 mg/Kg, subcutaneously), starting on the 42th day of infection. Groups of five mice were then daily sacrificed from the first day after onset of treatment until the first day after. The perfusion of the portal system was performed and a piece of the intestine was processed for qualitative and quantitative oograms. This treatment carries to larger numbers of eggs in the tissues of treated mice, when compared with untreated groups. No changes were observed in the kinetics of oviposition, as all stages of viable eggs were observed in the tissues of treated and control mice. These data reinforce the hypothesis of a partial blockade of the egg excretion in immunossupressed mice. Camundongos infectados com cerca de 90 cercárias da cepa LE de Schistosoma mansoni foram tratados durante 5 dias consecutivos com dexametasona (50mg/ Kg, subcutaneamente) a partir do 42º dia de infecção. Grupos de cinco camundongos foram sacrificados diariamente após o primeiro dia do início do tratamento até o primeiro dia após o término. A perfusão do sistema porta foi feita e fragmentos do intestino foram processados para a realização de oogramas qualitativos e quantitativos. O tratamento leva a um maior número de ovos nos tecidos dos camundongos tratados, se comparado com os grupos não tratados. Nenhuma mudança foi observada na cinética de oviposição, e ovos viáveis em todos os estádios evolutivos foram observados nos tecidos de camundongos tratados e controles. Estes dados reforçam a hipótese de um bloqueio parcial na saída de ovos dos tecidos do intestino para o lúmem intestinal em camundongos imunossuprimidos. |
format |
Article in Journal/Newspaper |
author |
Marco Victor Hermeto Rosilene Siray Bicalho Roney Elias da Silva Alan Lane de Melo Leógenes Horácio Pereira |
author_facet |
Marco Victor Hermeto Rosilene Siray Bicalho Roney Elias da Silva Alan Lane de Melo Leógenes Horácio Pereira |
author_sort |
Marco Victor Hermeto |
title |
Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
title_short |
Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
title_full |
Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
title_fullStr |
Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
title_full_unstemmed |
Oogram studies in mice infected with Schistosoma mansoni and treated with dexamethasone Oograma em camundongos infectados com Schistosoma mansoni e tratados com dexametasona |
title_sort |
oogram studies in mice infected with schistosoma mansoni and treated with dexamethasone oograma em camundongos infectados com schistosoma mansoni e tratados com dexametasona |
publisher |
Universidade de São Paulo (USP) |
publishDate |
1994 |
url |
https://doi.org/10.1590/S0036-46651994000200001 https://doaj.org/article/42337e1383414b6aa35b54a10f2d1cc5 |
long_lat |
ENVELOPE(159.167,159.167,-78.100,-78.100) |
geographic |
Arctic The Portal |
geographic_facet |
Arctic The Portal |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista do Instituto de Medicina Tropical de São Paulo, Vol 36, Iss 2, Pp 99-103 (1994) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651994000200001 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46651994000200001 0036-4665 1678-9946 https://doaj.org/article/42337e1383414b6aa35b54a10f2d1cc5 |
op_doi |
https://doi.org/10.1590/S0036-46651994000200001 |
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Revista do Instituto de Medicina Tropical de São Paulo |
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36 |
container_issue |
2 |
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99 |
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103 |
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