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1.
Braz. j. med. biol. res ; 30(10): 1187-90, Oct. 1997. ilus
Article Dans Anglais | LILACS | ID: lil-201536

Résumé

Rotaviruses and reoviruses are involved in human and animal diseases. It is known that both viruses penetrate the gastrointestinal tract but their interaction with phagocytic cells is unknown. To study this interaction, peritoneal resident phagocytic cells were used and rotavirus and reovirus replication in peritoneal phagocytic cells was observed. However, rotavirus replication in these cells led to the production of defective particles since MA-104 cells inoculated with rotavirus phagocytic cell lysate did not show any evidence of virus replication. On the basis of these results, we suggest that, althought reovirus dissemination may be helped by these phagocytic cells, these cells may control rotavirus infection and probably contribute to the prevention of its dissemination.


Sujets)
Souris , Animaux , Techniques in vitro , Phagocytes/anatomopathologie , Reoviridae/pathogénicité , Rotavirus/pathogénicité , Système digestif/anatomopathologie , Infections à Reoviridae , Infections à rotavirus
2.
Rev. patol. trop ; 17(1): 9-15, jun. 1988. tab
Article Dans Portugais | LILACS | ID: lil-151057

Résumé

Três infecçöes, subsequentes, em uma única criança foram observadas ao longo de um estudo prospectivo na àrea urbana de Belém, Pará, Brasil, no decorrer de seus primeiros vinte e sete meses de vida. A detecçäo de rotavírus classificado como subgrupo II, sorotipo näo determinado, foi obtido nas duas primeiras infecçöes, sucedendo-se uma terceira pelo subgrupo I, sorotipo 2. Nesses episódios, observaram-se dois perfis eletroforéticos diferentes. A primeira infecçäo ocorreu aos 4 meses e as seguintes no 20§ e 27§, respectivamente. os processos infecciosos ocorreram de forma sintomática, sendo que em dois dos três episódios, as manifestaçöes clínicas forma mais severas, o segundo, em maior grau que o primeiro e, o terceiro, mais benigno que os anteriores


Sujets)
Humains , Nouveau-né , Nourrisson , Infections à rotavirus/diagnostic , Infections à rotavirus/étiologie , Infections à rotavirus/immunologie , Reoviridae/classification , Reoviridae/immunologie , Reoviridae/pathogénicité , Diarrhée du nourrisson/diagnostic , Diarrhée du nourrisson/étiologie , Escherichia coli , Immunité acquise d'origine maternelle
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