Evidence map›Paper›PMID 21526150›Full record

ArticlePloS one2011

Deciphering the role of RND efflux transporters in Burkholderia cenocepacia.

Silvia Bazzini, Claudia Udine, Andrea Sass, Maria Rosalia Pasca, Francesca Longo, Giovanni Emiliani, Marco Fondi, Elena Perrin, Francesca Decorosi, Carlo Viti and 6 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
8.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 99 citations in OpenAlex.

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  16. The Effect of 2-Thiocyanatopyridine Derivative 11026103 onAntibiotics (Basel, Switzerland) · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 5 institutions in 3 countries.

Silvia BazziniDipartimento di Genetica e Microbiologia, Università degli Studi di Pavia, Pavia, Italy.
Claudia Udine
Andrea Sass
Maria Rosalia Pasca
Francesca Longo
Giovanni Emiliani
Marco Fondi
Elena Perrin
Francesca Decorosi
Carlo Viti
Luciana Giovannetti
Livia Leoni
Renato Fani
Giovanna Riccardi
Eshwar Mahenthiralingam
Silvia Buroni
University of Florence · ITUniversity of Pavia · ITCardiff University · GBRoma Tre University · ITNational Academies of Sciences, Engineering, and Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Burkholderia cenocepacia J2315 is representative of a highly problematic group of cystic fibrosis (CF) pathogens. Eradication of B. cenocepacia is very difficult with the antimicrobial therapy being ineffective due to its high resistance to clinically relevant antimicrobial agents and disinfectants. RND (Resistance-Nodulation-Cell Division) efflux pumps are known to be among the mediators of multidrug resistance in gram-negative bacteria. Since the significance of the 16 RND efflux systems present in B. cenocepacia (named RND-1 to -16) has been only partially determined, the aim of this work was to analyze mutants of B. cenocepacia strain J2315 impaired in RND-4 and RND-9 efflux systems, and assess their role in the efflux of toxic compounds. The transcriptomes of mutants deleted individually in RND-4 and RND-9 (named D4 and D9), and a double-mutant in both efflux pumps (named D4-D9), were compared to that of the wild-type B. cenocepacia using microarray analysis. Microarray data were confirmed by qRT-PCR, phenotypic experiments, and by Phenotype MicroArray analysis. The data revealed that RND-4 made a significant contribution to the antibiotic resistance of B. cenocepacia, whereas RND-9 was only marginally involved in this process. Moreover, the double mutant D4-D9 showed a phenotype and an expression profile similar to D4. The microarray data showed that motility and chemotaxis-related genes appeared to be up-regulated in both D4 and D4-D9 strains. In contrast, these gene sets were down-regulated or expressed at levels similar to J2315 in the D9 mutant. Biofilm production was enhanced in all mutants. Overall, these results indicate that in B. cenocepacia RND pumps play a wider role than just in drug resistance, influencing additional phenotypic traits important for pathogenesis.

Indexed as

Anti-Infective AgentsBacterial AdhesionBacterial ProteinsBiofilmsBurkholderia cenocepaciaChemotaxisDown-RegulationDrug Resistance, BacterialFlagellaGene DeletionGene Expression ProfilingGene Expression Regulation, BacterialGenes, BacterialMembrane Transport ProteinsMicrobial Sensitivity TestsMovementAnti-Infective AgentsBacterial ProteinsMembrane Transport Proteins

Identifiers

PMID21526150
PMCPMC3079749
OpenAlexW1963977266

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.