• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.10.2006.tde-04072007-120303
Document
Author
Full name
Thais Lourenço Ferreira
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2006
Supervisor
Committee
Jerez, José Antonio (President)
Brandão, Paulo Eduardo
Gregori, Fabio
Title in Portuguese
Perfil eletroforético de rotavírus em amostras fecais diarréicas e após isolamento em cultura de células da linhagem MA104
Keywords in Portuguese
Cultivo celular
PAGE
Perfil eletroferótipo
RNA
Rotavirus
Abstract in Portuguese
No presente estudo foi analisado o perfil eletroforético de 15 amostras de rotavírus, sendo 11 de bezerros, 02 de leitões e 02 de criança, que foram cultivadas até a sexta passagem em células da linhagem MA104, com o monitoramento realizado pela técnica de eletroforese em gel de poliacrilamida (PAGE). O objetivo foi comparar o perfil eletroforético de amostras fecais e após o isolamento As amostras leitões não revelaram mudanças de migração aparente, mas uma amostra apresentou um segmento adicional entre os segmentos 5 e 6, tanto no material anterior ao cultivo, quanto na amostra isolada. Em relação as amostras de crianças, uma apresentou diferença na velocidade de migração eletroforética. Além disso, uma amostra de bezerro apresentou um segmento adicional entre os segmentos 5 e 6. Estes dados ressaltam a importância da PAGE como uma técnica de triagem de amostras, que podem, posteriormente serem analisadas por técnicas moleculares mais especificas. As mudanças de comportamento na migração eletroforética dos segmentos genômicos do RNA viral podem ser sugestivas de alteração nas propriedades antigênicas, além do fato de que mudanças que ocorreram in vitro poderão, também, ocorrer in vivo.
Title in English
Rotaviruses electropherotyes in diarrhoeal faeces and after isolation in MA104 cell cultures
Keywords in English
Cell culture
Electropherotic profile
PAGE
RNA
Rotavirus
Abstract in English
In the present work, we have analyzed the electrophoretic profile of 15 samples of rotavírus, 11 of calves, 02 of pigs and 02 of children, that have been cultivated on MA,104 cell up to the sixth passage. The polyacrilamide gel electrophoresis(PAGE) was used to confirm the viral isolation. The aim of the work was to compare the electropherotic profile of fecal samples before and after isolation in MA104 cells. The samples from pigs did not reveal apparent changes in bands migration. However, an additional segment, betweem segments 5 and 6 was detected, in one fecal sample and after isolation. Furthermore, one child sample showed differences in the electrophoretic mobility and also an additional segment was detected between segments 5 - 6 in one sample from a calf. The results emphasize the importance of PAGE as a technique to screen samples that could be analyzed posteriorly by more specific molecular techniques. The changes in the electrophoretic profiles of genomic segments of viral RNA might be suggestive of changes in the antigenic properties, besides the fact that changes that occurred in vitro may also happen in vivo.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2007-07-13
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.