Pseudomonas aeruginosa adaptation in the nasopharyngeal reservoir leads to migration and persistence in the lungs

Chronic bacterial infections are a key feature of a variety of lung conditions. The opportunistic bacterium, Pseudomonas aeruginosa , is extremely skilled at both colonizing and persisting in the airways of patients with lung damage. It has been suggested that the upper airways (including the parana...

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Veröffentlicht in:Nature communications 2014-09, Vol.5 (1), p.4780, Article 4780
Hauptverfasser: Fothergill, Joanne L., Neill, Daniel R., Loman, Nick, Winstanley, Craig, Kadioglu, Aras
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Neill, Daniel R.
Loman, Nick
Winstanley, Craig
Kadioglu, Aras
description Chronic bacterial infections are a key feature of a variety of lung conditions. The opportunistic bacterium, Pseudomonas aeruginosa , is extremely skilled at both colonizing and persisting in the airways of patients with lung damage. It has been suggested that the upper airways (including the paranasal sinuses and nasopharynx) play an important role as a silent reservoir of bacteria. Over time, P. aeruginosa can adapt to its niche, leading to increased resistance in the face of the immune system and intense therapy regimes. Here we describe a mouse inhalation model of P. aeruginosa chronic infection that can be studied for at least 28 days. We present evidence for adaptation in vivo , in terms of genotype and phenotype including antibiotic resistance. Our data suggest that there is persistence in the upper respiratory tract and that this is key in the establishment of lung infection. This model provides a unique platform for studying evolutionary dynamics and therapeutics. Pseudomonas aeruginosa causes chronic infections in patients with lung damage. Here, Fothergill et al . develop an intranasal inhalation model of P. aeruginosa infection and describe genetic and phenotypic changes that the bacteria undergo during adaptation and spread through the respiratory tract.
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subjects 631/250/255/1318
631/326/41/2529
64
64/60
692/699/1785
Adaptation, Physiological - genetics
Administration, Inhalation
Administration, Intranasal
Amino Acid Sequence
Animals
Anti-Bacterial Agents - pharmacology
Bacterial Proteins - genetics
Bacterial Proteins - metabolism
Base Sequence
Biofilms - growth & development
Colony Count, Microbial
Disease Models, Animal
Female
Gene Expression Regulation, Bacterial
Genotype
Host-Pathogen Interactions
Humanities and Social Sciences
Humans
Lung - microbiology
Lung - pathology
Mice
Mice, Inbred BALB C
Molecular Sequence Data
multidisciplinary
Nasopharynx - microbiology
Nasopharynx - pathology
Paranasal Sinuses - microbiology
Paranasal Sinuses - pathology
Phenotype
Polymorphism, Single Nucleotide
Pseudomonas aeruginosa - drug effects
Pseudomonas aeruginosa - genetics
Pseudomonas aeruginosa - pathogenicity
Pseudomonas Infections - drug therapy
Pseudomonas Infections - microbiology
Pseudomonas Infections - pathology
Science
Science (multidisciplinary)
title Pseudomonas aeruginosa adaptation in the nasopharyngeal reservoir leads to migration and persistence in the lungs
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