Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/200333
Type: Artigo de periódico
Title: Use Of Escherichia Coli Box-pcr Fingerprints To Identify Sources Of Fecal Contamination Of Water Bodies In The State Of São Paulo, Brazil.
Author: Carlos, Camila
Alexandrino, Fabiana
Stoppe, Nancy C
Sato, Maria Inês Z
Ottoboni, Laura M M
Abstract: Repetitive element sequence-based polymerase chain reaction (rep-PCR) is one of the commonest methods used to identify sources of fecal contamination of water systems. In this work, BOX-A1R-based repetitive extragenic palindromic-PCR (BOX-PCR) was used to discriminate Escherichia coli strains originating from different animals and water sources, and the suitability of the technique for bacterial source tracking (BST) was evaluated. A total of 214 strains from humans, 150 strains from animals, 55 strains from sewage and 77 strains from water bodies were analyzed by the BOX-PCR technique. When maximum similarity between the fingerprints was used, a correct classification rate of 84% was achieved for strains from human and animal sources. Furthermore, 95% of the strains found in sewage were classified as being from human sources by at least one of the four classification tools used. Classification of the strains found in water bodies in the State of São Paulo was based on the fingerprints obtained for human and animal sources. Most of the sampling sites appeared to be affected by mixed sources of fecal contamination. The use of BOX-PCR for BST could be especially valuable in developing countries, where simplicity and cost are important considerations.
Subject: Animals
Brazil
Dna Fingerprinting
Dna, Bacterial
Environmental Monitoring
Escherichia Coli
Feces
Humans
Polymerase Chain Reaction
Repetitive Sequences, Nucleic Acid
Water Pollutants
Water Pollution
Rights: fechado
Identifier DOI: 10.1016/j.jenvman.2011.08.012
Address: http://www.ncbi.nlm.nih.gov/pubmed/22054569
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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