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Previous issue date: 2007-08-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Outbreaks of infection by Lawsonia intracelullaris in swine and rabbits in the State of Rio de
Janeiro are described. The symptomathology was characterized by bloody and aquous
diarrhea, with respectively superacute and acute course. Post-mortem findings were a
reticulate aspect of the ileum. In swine its mucosa was moderately thickened and it contained
large amounts of partially coagulated blood; in rabbits the wall of the ileum was much
thickened and the contents were aquous. Histopathological examination revealed severe
hyperplastic proliferation of the epithelial cells of the Lieberk?hn crypts, sometimes
associated with inflammatory and necrotic alterations. Silver impregnation and
imunohistochemistry demonstrated the presence of large amounts of bacteria in the cytoplasm
of the cryptal epithelial cells. In swine L. intracellularis was seen also by ultramicroscopic
examination. This is the first report of the disease in the State of Rio de Janeiro. / Descrevem-se surtos de infec??o por Lawsonia intracellularis em su?nos e coelhos, ocorridos
no Estado do Rio de Janeiro. A sintomatologia caracterizou-se por diarr?ia sanguinolenta e
aquosa, com evolu??o superaguda e aguda, respectivamente. ? necropsia verificaram-se ?leo
de aspecto reticulado, com mucosa moderadamente espessada, contendo grande quantidade de
sangue parcialmente coagulado, no caso dos su?nos, e ?leo com parede muito espessada e
conte?do aquoso nos coelhos. O exame histol?gico revelou marcada prolifera??o hiperpl?sica
das c?lulas epiteliais das criptas de Lieberk?hn, por vezes, associada a altera??es
inflamat?rias e necr?ticas. Impregna??o pela prata e t?cnica imunoistoqu?mica demonstraram
presen?a da bact?ria, em grande quantidade, dentro do citoplasma das c?lulas epiteliais das
criptas de su?nos e coelhos. Em su?nos, L. intracellularis tamb?m foi visualizada pela
ultramicroscopia. Essa ? a primeira descri??o da enfermidade no Estado do Rio de Janeiro.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:jspui/2192 |
| Date | 31 August 2007 |
| Creators | Ribeiro, Carlos Torres |
| Contributors | Peixoto, Paulo Fernando Vargas, Fran?a, Ticiana do Nascimento, Brito, Marilene Farias, Dobereiner, Jurgen, Torkania, Carlos Hubinger, Pitombo, C?cero Ara?jo |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Instituto de Veterin?ria |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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