Evidence map›Paper›PMID 20453130›Full record

ArticleApplied and environmental microbiology2010

Increase in acid tolerance of Campylobacter jejuni through coincubation with amoebae.

Diana Axelsson-Olsson, Lovisa Svensson, Jenny Olofsson, Paulo Salomon, Jonas Waldenström, Patrik Ellström, Björn Olsen

Abstract read
In one paragraph

Article in Applied and environmental microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Genetic Factors ofPathogens (Basel, Switzerland) · 2025
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  3. Review
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  5. Article
  6. Waterborne Isolates ofFrontiers in microbiology · 2021
    Article
  7. Inhibition and Interactions ofMicroorganisms · 2019
    Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

7 authors.

Diana Axelsson-OlssonSection for Zoonotic Ecology and Epidemiology, Linnaeus University, SE-391 82 Kalmar, Sweden. diana.axelsson-olsson@lnu.se
Lovisa Svensson
Jenny Olofsson
Paulo Salomon
Jonas Waldenström
Patrik Ellström
Björn Olsen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Campylobacter jejuni is a recognized and common gastrointestinal pathogen in most parts of the world. Human infections are often food borne, and the bacterium is frequent among poultry and other food animals. However, much less is known about the epidemiology of C. jejuni in the environment and what mechanisms the bacterium depends on to tolerate low pH. The sensitive nature of C. jejuni stands in contrast to the fact that it is difficult to eradicate from poultry production, and even more contradictory is the fact that the bacterium is able to survive the acidic passage through the human stomach. Here we expand the knowledge on C. jejuni acid tolerance by looking at protozoa as a potential epidemiological pathway of infection. Our results showed that when C. jejuni cells were coincubated with Acanthamoeba polyphaga in acidified phosphate-buffered saline (PBS) or tap water, the bacteria could tolerate pHs far below those in their normal range, even surviving at pH 4 for 20 h and at pH 2 for 5 h. Interestingly, moderately acidic conditions (pH 4 and 5) were shown to trigger C. jejuni motility as well as to increase adhesion/internalization of bacteria into A. polyphaga. Taken together, the results suggest that protozoa may act as protective hosts against harsh conditions and might be a potential risk factor for C. jejuni infections. These findings may be important for our understanding of C. jejuni passage through the gastrointestinal tract and for hygiene practices used in poultry settings.

Indexed as

Coculture TechniquesAcanthamoebaAcanthamoeba castellaniiAnimalsBacterial AdhesionCampylobacter jejuniCulture MediaHumansHydrogen-Ion ConcentrationMovementCulture Media

Identifiers

PMID20453130
PMCPMC2897417

What OpenQuestion holds

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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.