Evidence map›Paper›PMID 31076596›Full record

ArticleScientific reports2019

Salmonella enterica persister cells form unstable small colony variants after in vitro exposure to ciprofloxacin.

Samara Paula Mattiello Drescher, Stephanie Wagner Gallo, Pedro Maria Abreu Ferreira, Carlos Alexandre Sanchez Ferreira, Sílvia Dias de Oliveira

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Widespread Distribution of Carbapenem-ResistantAntibiotics (Basel, Switzerland) · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Antibiofilm activity of a lytic Salmonella phage on different Salmonella enterica serovars isolated from broiler farms.International microbiology : the official journal of the Spanish Society for Microbiology · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Activity of Antibiotics against Pseudomonas aeruginosa in anAntimicrobial agents and chemotherapy · 2020
    Article
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

5 authors.

Samara Paula Mattiello DrescherPUCRS, Escola de Ciências, Laboratório de Imunologia e Microbiologia, Porto Alegre, RS, Brazil.
Stephanie Wagner GalloPUCRS, Escola de Ciências, Laboratório de Imunologia e Microbiologia, Porto Alegre, RS, Brazil.
Pedro Maria Abreu FerreiraPUCRS, Escola de Ciências, Programa de Pós-graduação em Ecologia e Evolução da Biodiversidade, Porto Alegre, RS, Brazil.
Carlos Alexandre Sanchez FerreiraPUCRS, Escola de Ciências, Laboratório de Imunologia e Microbiologia, Porto Alegre, RS, Brazil.
Sílvia Dias de OliveiraPUCRS, Escola de Ciências, Laboratório de Imunologia e Microbiologia, Porto Alegre, RS, Brazil. silviadias@pucrs.br.ORCID http://orcid.org/0000-0002-7296-5085

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Persistence phenotype and small colony variants (SCVs) can be part of a bacterial bet-hedging strategy for survival under environmental stresses, such as antimicrobial exposure. These phenotypes are of particular concern in persistent and relapsing infections, since cells resume to normal growth after cessation of the stressful condition. In this context, we found persisters and unstable SCVs as phenotypic variants of Salmonella enterica that were able to survive ciprofloxacin exposure. A high heterogeneity in persister levels was observed among S. enterica isolates grown under planktonic and biofilm conditions and exposed to ciprofloxacin or ceftazidime, which may indicate persistence as a non-multidrug-tolerant phenotype. Nevertheless, a comparable variability was not found in the formation of SCVs among the isolates. Indeed, similar proportions of SCV in relation to normal colony phenotype (NCP) were maintained even after three successive cycles of ciprofloxacin exposure testing colonies from both origins (SCV or NCP). Additionally, we found filamentous and dividing cells in the same scanning electron microscopy images from both SCV and NCP. These findings lead us to hypothesize that besides variability among isolates, a single isolate may generate distinct populations of persisters, where cells growing under distinct conditions may adopt different and perhaps complementary survival strategies.

Indexed as

Anti-Bacterial AgentsBiofilmsCiprofloxacinMicrobial Sensitivity TestsMicroscopy, Electron, ScanningPhenotypeSalmonella entericaAnti-Bacterial AgentsCiprofloxacin

Identifiers

PMID31076596
PMCPMC6510897

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.