Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.

<h4>Background</h4>There is strong evidence that culture-based methods detect only a small proportion of bacteria present in the respiratory tracts of cystic fibrosis (CF) patients.<h4>Methodology/principal findings</h4>Standard microbiological culture and phenotypic identifi...

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Autores principales: Fadi Bittar, Hervé Richet, Jean-Christophe Dubus, Martine Reynaud-Gaubert, Nathalie Stremler, Jacques Sarles, Didier Raoult, Jean-Marc Rolain
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Publicado: Public Library of Science (PLoS) 2008
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Acceso en línea:https://doaj.org/article/9c68aec4f6824ea1946d92454a276c7d
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spelling oai:doaj.org-article:9c68aec4f6824ea1946d92454a276c7d2021-11-25T06:11:17ZMolecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.1932-620310.1371/journal.pone.0002908https://doaj.org/article/9c68aec4f6824ea1946d92454a276c7d2008-08-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18682840/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>There is strong evidence that culture-based methods detect only a small proportion of bacteria present in the respiratory tracts of cystic fibrosis (CF) patients.<h4>Methodology/principal findings</h4>Standard microbiological culture and phenotypic identification of bacteria in sputa from CF patients have been compared to molecular methods by the use of 16S rDNA amplification, cloning and sequencing. Twenty-five sputa from CF patients were cultured that yield 33 isolates (13 species) known to be pathogens during CF. For molecular cloning, 760 clones were sequenced (7.2+/-3.9 species/sputum), and 53 different bacterial species were identified including 16 species of anaerobes (30%). Discrepancies between culture and molecular data were numerous and demonstrate that accurate identification remains challenging. New or emerging bacteria not or rarely reported in CF patients were detected including Dolosigranulum pigrum, Dialister pneumosintes, and Inquilinus limosus.<h4>Conclusions/significance</h4>Our results demonstrate the complex microbial community in sputa from CF patients, especially anaerobic bacteria that are probably an underestimated cause of CF lung pathology. Metagenomic analysis is urgently needed to better understand those complex communities in CF pulmonary infections.Fadi BittarHervé RichetJean-Christophe DubusMartine Reynaud-GaubertNathalie StremlerJacques SarlesDidier RaoultJean-Marc RolainPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 8, p e2908 (2008)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Fadi Bittar
Hervé Richet
Jean-Christophe Dubus
Martine Reynaud-Gaubert
Nathalie Stremler
Jacques Sarles
Didier Raoult
Jean-Marc Rolain
Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
description <h4>Background</h4>There is strong evidence that culture-based methods detect only a small proportion of bacteria present in the respiratory tracts of cystic fibrosis (CF) patients.<h4>Methodology/principal findings</h4>Standard microbiological culture and phenotypic identification of bacteria in sputa from CF patients have been compared to molecular methods by the use of 16S rDNA amplification, cloning and sequencing. Twenty-five sputa from CF patients were cultured that yield 33 isolates (13 species) known to be pathogens during CF. For molecular cloning, 760 clones were sequenced (7.2+/-3.9 species/sputum), and 53 different bacterial species were identified including 16 species of anaerobes (30%). Discrepancies between culture and molecular data were numerous and demonstrate that accurate identification remains challenging. New or emerging bacteria not or rarely reported in CF patients were detected including Dolosigranulum pigrum, Dialister pneumosintes, and Inquilinus limosus.<h4>Conclusions/significance</h4>Our results demonstrate the complex microbial community in sputa from CF patients, especially anaerobic bacteria that are probably an underestimated cause of CF lung pathology. Metagenomic analysis is urgently needed to better understand those complex communities in CF pulmonary infections.
format article
author Fadi Bittar
Hervé Richet
Jean-Christophe Dubus
Martine Reynaud-Gaubert
Nathalie Stremler
Jacques Sarles
Didier Raoult
Jean-Marc Rolain
author_facet Fadi Bittar
Hervé Richet
Jean-Christophe Dubus
Martine Reynaud-Gaubert
Nathalie Stremler
Jacques Sarles
Didier Raoult
Jean-Marc Rolain
author_sort Fadi Bittar
title Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
title_short Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
title_full Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
title_fullStr Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
title_full_unstemmed Molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
title_sort molecular detection of multiple emerging pathogens in sputa from cystic fibrosis patients.
publisher Public Library of Science (PLoS)
publishDate 2008
url https://doaj.org/article/9c68aec4f6824ea1946d92454a276c7d
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