• 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.42.2012.tde-01082012-101742
Document
Author
Full name
Livia de Carvalho Fontes
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2012
Supervisor
Committee
Huenuman, Nilton Erbet Lincopan (President)
Gales, Ana Cristina
Levin, Anna Sara Shafferman
Title in Portuguese
Monitoramento da resistência aos antibacterianos em membros da família enterobacteriaceae recuperados de ambientes aquáticos no Estado de São Paulo, Brasil.
Keywords in Portuguese
Enterobacteriaceae
Poluição da água por microorganismos
Resistência microbiana às drogas
Testes de sensibilidade microbiana
Abstract in Portuguese
Enterobactérias são importantes agentes de infecção podendo contaminar ambientes aquáticos poluídos por atividades antropogênicas, os quais podem ser importantes locais para a seleção e disseminação de bactérias resistentes aos antibacterianos (ATB) de uso na medicina humana e veterinária. O objetivo desse estudo foi monitorar a disseminação de enterobactérias resistentes aos ATB em ambientes aquáticos do estado de São Paulo. De 2009-2010, 135 enterobactérias resistentes à pelo menos um ATB, foram isoladas de rios, represas e estações de tratamento de esgoto. O fenótipo multirresistente (MR) foi predominante em 64% dos isolados, sendo que houve um predomino de E. coli (80%) e K. pneumoniae (48%). Oito porcento dos isolados apresentaram fenótipo ESBL (cefotaxima, CIM50 64 mg/ml) devido à presença de genes blaCTX-M-like, enquanto que a presença de genes qnr-like foi confirmada em 7% dos isolados resistentes à ciprofloxacina (CIM50 32mg/ml). A tipagem molecular revelou ausência de relação clonal entre os isolados de K. pneumoniae e E. coli.
Title in English
Surveillance of antibacterial resistance among enterobacteriaceae from environmental water samples in São Paulo State, Brazil.
Keywords in English
Enterobacteriaceae
Microbial resistance to drugs
Microbial sensitivity tests
Water pollution by microorganisms
Abstract in English
Enterobacteria are important agents of infection may contaminate aquatic environments polluted by anthropogenic activities, which may be important sites for the selection and spread of bacteria resistant to antibiotics (ATB) for use in human and veterinary medicine. The aim of this study was to monitor the spread of enterobacteria resistant to ATB in aquatic environments of the state of Sao Paulo. From 2009-2010, 135 Enterobacteriaceae resistant to at least one ATB, were isolated from rivers, dams and sewage treatment plants. The phenotype resistant (MDR) was predominant in 64% of the isolates, and there was the predominance of E. coli (80%) and K pneumoniae (48%). Eight percent of the isolates showed ESBL phenotype (cefotaxime, MIC50 64 mg/ml) due to the presence of blaCTX-M-like, while the presence qnr-like gene was confirmed in 7% of isolates resistant to (ciprofloxacin MIC50 32mg/ml). Molecular typing revealed no clonal relationship among isolates of K. pneumoniae and E. coli.
 
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
2012-08-16
 
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.