Evidence map›Paper›PMID 37246220›Full record

ArticleBMC microbiology2023

Increased ompW and ompA expression and higher virulence of Acinetobacter baumannii persister cells.

Brenda Landvoigt Schmitt, Bruna Ferreira Leal, Mariana Leyser, Muriel Primon de Barros, Danielle Silva Trentin, Carlos Alexandre Sanchez Ferreira, Sílvia Dias de Oliveira

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.4field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 25 citations in OpenAlex.

  1. Monoclonal Antibodies Targeting Bacterial Infections: A Broad Review of the Field.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2026
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  12. OmpW overexpression in meropenem-exposedFrontiers in microbiology · 2025
    Article
  13. Recent advances in host models in studying virulence factors and pathogenesis ofFrontiers in cellular and infection microbiology · 2025
    Review
  14. Article
  15. Article
  16. Article
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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

7 authors at 2 institutions in 1 country.

Brenda Landvoigt SchmittLaboratório de Imunologia e Microbiologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil.
Bruna Ferreira LealLaboratório de Imunologia e Microbiologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil.
Mariana LeyserLaboratório de Imunologia e Microbiologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil.
Muriel Primon de BarrosLaboratório de Bacteriologia e Modelos Experimentais Alternativos, Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, UFCSPA, R. Sarmento Leite, 245, Porto Alegre, RS, 90050-170, Brazil.
Danielle Silva TrentinLaboratório de Bacteriologia e Modelos Experimentais Alternativos, Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, UFCSPA, R. Sarmento Leite, 245, Porto Alegre, RS, 90050-170, Brazil.
Carlos Alexandre Sanchez FerreiraLaboratório de Imunologia e Microbiologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. cferreira@pucrs.br.
Sílvia Dias de OliveiraLaboratório de Imunologia e Microbiologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil. silviadiasoliveira@gmail.com.
Pontifícia Universidade Católica do Rio Grande do Sul · BRUniversidade Federal de Ciências da Saúde de Porto Alegre · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAcinetobacter baumannii is one of the main causes of healthcare-associated infections that threaten public health, and carbapenems, such as meropenem, have been a therapeutic option for these infections. Therapeutic failure is mainly due to the antimicrobial resistance of A. baumannii, as well as the presence of persister cells. Persisters constitute a fraction of the bacterial population that present a transient phenotype capable of tolerating supra-lethal concentrations of antibiotics. Some proteins have been suggested to be involved in the onset and/or maintenance of this phenotype. Thus, we investigated the mRNA levels of the adeB (AdeABC efflux pump component), ompA, and ompW (outer membrane proteins) in A. baumannii cells before and after exposure to meropenem.

resultsWe found a significant increase (p-value < 0.05) in the expression of ompA (> 5.5-fold) and ompW (> 10.5-fold) in persisters. However, adeB did not show significantly different expression levels when comparing treated and untreated cells. Therefore, we suggest that these outer membrane proteins, especially OmpW, could be part of the mechanism of A. baumannii persisters to deal with the presence of high doses of meropenem. We also observed in the Galleria mellonella larvae model that persister cells are more virulent than regular ones, as evidenced by their LD

conclusionsTaken together, these data contribute to the understanding of the phenotypic features of A. baumannii persisters and their relation to virulence, as well as highlight OmpW and OmpA as potential targets for drug development against A. baumannii persisters.

Indexed as

Acinetobacter baumanniiAnti-Bacterial AgentsBacterial ProteinsMembrane ProteinsMeropenemMicrobial Sensitivity TestsVirulenceAnti-Bacterial AgentsBacterial ProteinsMembrane ProteinsMeropenemAcinetobacter baumanniiGalleria mellonellaMeropenemOuter membrane proteinPersistenceVirulence

Identifiers

PMID37246220
PMCPMC10226259
OpenAlexW4378628194

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.