Evidence map›Paper›PMID 19147521›Full record

ArticleThe Journal of antimicrobial chemotherapy2009

Roles of lipooligosaccharide and capsular polysaccharide in antimicrobial resistance and natural transformation of Campylobacter jejuni.

Byeonghwa Jeon, Wayne Muraoka, Alexandra Scupham, Qijing Zhang

Abstract read
In one paragraph

Article in The Journal of antimicrobial chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
6.2field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 50 citations in OpenAlex.

  1. Cas9 modulatesMicrobiology (Reading, England) · 2025
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  3. ClpB enhances thermotolerance inMicrobiology spectrum · 2025
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  11. A Newly Discovered Drug Resistance GeneInfection and drug resistance · 2019
    Article
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  15. Article
  16. Article
  17. Article
  18. Antimicrobial resistance in the food chain: a review.International journal of environmental research and public health · 2013
    Review
  19. Antibody to a conserved antigenic target is protective against diverse prokaryotic and eukaryotic pathogens.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  20. Review
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

4 authors at 2 institutions in 1 country.

Byeonghwa JeonDepartment of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA.
Wayne Muraoka
Alexandra Scupham
Qijing Zhang
Iowa State University · USNational Animal Disease Center · US

Funding

Mechanisms of Antibiotic Efflux in CampylobacterR01DK063008 · NIDDK · IOWA STATE UNIVERSITY · PI ZHANG, QIJING · 2003 to 2011
$2.1M
NIDDK NIH HHS R01DK063008
6 · The paper itself

Abstract

objectivesThis study is aimed to determine the role of capsular polysaccharide (CPS) and lipooligosaccharide (LOS) in modulating antimicrobial resistance and natural transformation of Campylobacter jejuni, an important food-borne human pathogen.

methodsA series of C. jejuni mutants, which are defective in either CPS or LOS or both, were constructed. The antimicrobial susceptibility, bacterial surface hydrophobicity, natural transformation frequency and DNA binding and uptake were measured and compared between the mutants and the wild-type strain.

resultsTruncation of LOS greatly reduced (8-fold) the intrinsic resistance of C. jejuni to erythromycin, a key antibiotic used for treating human campylobacteriosis, while the loss of CPS did not result in significant changes in the susceptibility to antimicrobial agents. Notably, mutation of LOS also significantly increased (>16-fold) the susceptibility to erythromycin in C. jejuni mutants carrying the A2074G mutation in 23S rRNA. The increased susceptibility to erythromycin in the LOS mutant was probably due to enhanced permeability to this antibiotic, because the LOS mutation rendered the surface of C. jejuni more hydrophobic. Loss of CPS and truncation of LOS increased the transformation frequency by 4- and 25-fold, respectively, and mutation of both CPS and LOS resulted in a 97-fold increase in the transformation frequency. Consistent with the increased transformation frequencies, the CPS and LOS mutants showed enhanced rates of DNA uptake.

conclusionsThese results demonstrate that the surface polysaccharides in C. jejuni contribute to the resistance to erythromycin, a clinically important antibiotic, but restrict natural transformation.

Indexed as

Drug Resistance, BacterialTransformation, BacterialAnti-Bacterial AgentsCampylobacter jejuniDNA, BacterialErythromycinHumansLipopolysaccharidesMutationPoint MutationPolysaccharides, BacterialRNA, RibosomalSequence DeletionAnti-Bacterial AgentsDNA, BacterialErythromycinlipid-linked oligosaccharidesLipopolysaccharidesPolysaccharides, BacterialRNA, Ribosomal

Identifiers

PMID19147521
PMCPMC2640156
OpenAlexW2159156173

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.