• 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
10.11606/D.10.2009.tde-07012010-145728
Document
Author
Full name
Luise Zozula Blind Carrenho
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Sinhorini, Idércio Luiz (President)
Dagli, Maria Lucia Zaidan
Kreuger, Maria Regina Orofino
Title in Portuguese
Avaliação dos efeitos da subfração Acetato de etila III de Vemonia scorpioides em modelo de melanoma murino in vivo e in vitro
Keywords in Portuguese
Vernonia scorpioides
B16F10
Subfração acetato de etila III
Abstract in Portuguese
Vernonia Scorpioides tem sido utilizada popularmente no Brasil para tratar problemas de pele e úlceras crônicas, como as úlceras de perna decorrentes de diabetes. No presente estudo foi investigado o efeito da subfração acetato de etila III obtida do extrato bruto das folhas de Vernonia scorpioides in vitro, onde células de melanoma murino B16F10 foram submetidas à tratamento com várias concentrações no período de 24, 48, 72 e 96 horas, com o propósito de analisar a citotoxicidade da subfração frente às células. Percebemos uma alta citotoxicidade da subfração matando as células nas concentrações acima de 5 μg/ml, as células que receberam o tratamento de 1 g/ml não sofreram morte celular total. A morte celular foi elucidada com laranja de acridina e brometo de etídio. Um estudo mais detalhado das células foi feito com microscopia eletrônica. No estudo in vivo foi investigada a ação da subfração acetato de etila III na concentração de 5mg/Kg em camundongos C57BL6 com o objetivo de verificar a ação da subfração, sete dias de tratamento após dez dias da inoculação, tratamento profilático em dose única no primeiro dia da inoculação e tratamento precoce após 48 horas da inoculação com intervalos de dois dias. Os animais receberam via subcutânea, na região lombar dorsal 1,5 x 105 células de melanoma B16F10. Percebemos que o local em que a subfração acetato de etila III consegue disseminar-se pela massa tumoral ocorre a morte do tumor, extensa área de necrose é observada, quanto mais cedo e precoce o tratamento melhor o comportamento da massa tumoral a subfração acetato de etila III, o único órgão que reage é o baço se apresenta muito reativo proporcionalmente ao tamanho do tumor, os demais órgão não apresentam lesões, a subfração não causou nefrocitotoxicidade e hepatotoxicidade aparente.
Title in English
Vernonia scorpioides ethyl acetate III subfraction effect evaluation in model of in vivo and in vitro murine melanoma
Keywords in English
Vernonia scorpioides
B16F10
Ethyl acetate III subfraction
Abstract in English
Vernonia scorpioides has been tradionally used in Brazil in order to treat skin disorders and chronic wounds, such as leg ulcers in result to diabetes. The present study investigated the ethyl acetate III subfraction effect obtained from fresh leaves of Vernonia scorpioides in vitro, where B16F10 murine melanoma cells were submitted to treatment with several concentrations during 24, 48, 72 and 96 hours, to analyze citotoxicity subfraction before the cells. A high citotoxicity level of subfraction could be noticed killing cells above 5 μg/ml concentration, the cells which received 1 g/ml treatment have not suffered total cellular death. This death was elucidated with acridine orange/ethidium bromide staining, a deeper study of the cells was performed with electron microscopy, the action of ethyl acetate III subfraction in the 5mg/Kg concentration in C57BL6 mice was investigated in the in vivo study so that it is possible to verify the action of the subfraction seven days of treatment after ten days of inoculation, single dose of prophylactic treatment on the first day of inoculation and precocious treatment after 48 hours of inoculation with 48-hour intervals. The animals received subcutaneously 1,5 x 105 B16F10 murine melanoma cells. Tumor death is noticeable in the area where the ethyl acetate III subfraction could disseminate inside, a comprehensive necrosed area was observed, the sooner and more precocious the treatment the better the tumor will react to the ethyl acetate III subfraction, the only organ that reacts is the spleen which presents itself very reactive to the size of the tumor, the other organs do not display wounds, the subfraction did not cause apparent nefrotoxicity and hepatoxicity.
 
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
2010-05-20
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
Centro de Informática de São Carlos
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2021. All rights reserved.