Evidence map›Paper›PMID 28238067›Full record

ArticleFolia microbiologica2017

Acquisition of Tn6018-3' CS regions increases colistin MICs against Acinetobacter baumannii isolates harboring new variants of AbaRs.

Mohammad Savari, Alireza Ekrami, Saeed Shoja, Abbas Bahador

Erratum issuedAbstract read
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In one paragraph

Article in Folia microbiologica, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.3field-weighted citation impact, top 48% 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

1 citing paper in PubMed, 5 citations in OpenAlex.

  1. Efflux Pump Activity and Mutations Driving Multidrug Resistance inInternational journal of microbiology · 2021
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Mohammad SavariDepartment of Microbiology, School of Medicine, Tehran University of Medical Sciences, Keshavarz Blvd, 100 Poursina Ave, Tehran, 1416753955, Iran.
Alireza EkramiHealth Research Institute, Infectious and Tropical Disease Research Center, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran.
Saeed ShojaInfectious and Tropical Disease Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
Abbas BahadorDepartment of Microbiology, School of Medicine, Tehran University of Medical Sciences, Keshavarz Blvd, 100 Poursina Ave, Tehran, 1416753955, Iran. abahador@sina.tums.ac.ir.
Tehran University of Medical Sciences · IRAhvaz Jundishapur University of Medical Sciences · IRHormozgan University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Colistin is the last hope to treat extensively drug resistance (XDR) Acinetobacter baumannii (A. baumannii) infections, but resistance to colistin is currently reported in clinical centers all over the world. Here, we studied two colistin-resistant A. baumannii isolates with a difference in minimum inhibitory concentrations (MICs) that were isolated from a single burn patient during treatment in the hospitalization period. The international clonal (IC) lineage, multilocus sequence typing (MLST), and multiple loci variable number tandem repeat (VNTR) analysis (MLVA) typing were used to characterize the relatedness of A. baumannii isolates. Lipopolysaccharides (LPS) and PmrAB system analysis by PCR sequencing, polyacrylamide gel electrophoresis (PAGE), and real-time PCR were performed to determine the intactness and probable modifications of the LPS as the main resistance mechanisms to colistin. A combination of PCR, sequencing, and restriction fragment length polymorphism (RFLP) was used for A. baumannii resistance islands (AbaR) mapping as resistance-determinant reservoirs. Two isolates were identical at all MLST and VNTR marker loci that indicated the isolates were the same strain. In comparison to colistin-heteroresistant A. baumannii strain TEH267 (MIC = 1.5 mg/L), colistin-resistant A. baumannii strain TEH273 (MIC ≥256 mg/L) acquired two genomic regions including Tn6018-topA sequence and topA sequence-3' CS in its AbaR structure containing ispA and cadA genes which, it would appear, could be associated with eightfold increase in colistin MIC. Both isolates had new variants of AbaR-like structures which could be derivatives of the typical AbaR3. According to the results of this study, AbaRs could be associated with an increase in MIC to colistin.

Indexed as

DNA Transposable ElementsAcinetobacter baumanniiAcinetobacter InfectionsAnti-Bacterial AgentsBacterial ProteinsBurnsColistinElectrophoresis, Polyacrylamide GelGenes, BacterialGenotypeHumansLipopolysaccharidesMicrobial Sensitivity TestsMinisatellite RepeatsMultilocus Sequence TypingPolymerase Chain ReactionAnti-Bacterial AgentsBacterial ProteinsColistinDNA Transposable ElementsLipopolysaccharidespmrA protein, BacteriaPmrB protein, bacteriaTranscription Factors

Identifiers

PMID28238067
OpenAlexW4240228631

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.