Evidence map›Paper›PMID 27520816›Full record

ArticleApplied and environmental microbiology2016

Antimicrobial and Virulence-Modulating Effects of Clove Essential Oil on the Foodborne Pathogen Campylobacter jejuni.

Judit K Kovács, Péter Felső, Lilla Makszin, Zoltán Pápai, Györgyi Horváth, Hajnalka Ábrahám, Tamás Palkovics, Andrea Böszörményi, Levente Emődy, György Schneider

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
8.7field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Factors Influencing Biofilm Formation ofFoods (Basel, Switzerland) · 2026
    Article
  5. Review
  6. A Review of Essential Oils with Anti-Foods (Basel, Switzerland) · 2026
    Review
  7. Review
  8. Article
  9. Microorganisms · 2025
    Article
  10. Review
  11. Article
  12. Article
  13. Phytogenics in Ginger,Animals : an open access journal from MDPI · 2023
    Review
  14. Review
  15. Ability of Garlic and Ginger Oil to ReduceAnimals : an open access journal from MDPI · 2022
    Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. Select Phytochemicals ReduceFrontiers in microbiology · 2021
    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

10 authors at 3 institutions in 1 country.

Judit K KovácsDepartment of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary.
Péter FelsőDepartment of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary.
Lilla MakszinInstitute of Bioanalysis, University of Pécs, Pécs, Hungary.
Zoltán PápaiDepartment of Biochemistry and Medical Chemistry, University of Pécs, Pécs, Hungary.
Györgyi HorváthDepartment of Pharmacognosy, University of Pécs, Pécs, Hungary.
Hajnalka ÁbrahámCentral Electron Microscope Laboratory, University of Pécs, Pécs, Hungary.
Tamás PalkovicsDepartment of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary.
Andrea BöszörményiDepartment of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.
Levente EmődyDepartment of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.
György SchneiderDepartment of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary gyorgy.schneider@aok.pte.hu.
University of Pecs · HUHUN-REN Veterinary Medical Research Institute · HUSemmelweis University · HU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Our study investigated the antimicrobial action of clove (Syzygium aromaticum) essential oil (EO) on the zoonotic pathogen Campylobacter jejuni After confirming the clove essential oil's general antibacterial effect, we analyzed the reference strain Campylobacter jejuni NCTC 11168. Phenotypic, proteomic, and transcriptomic methods were used to reveal changes in cell morphology and functions when exposed to sublethal concentrations of clove EO. The normally curved cells showed markedly straightened and shrunken morphology on the scanning electron micrographs as a result of stress. Although, oxidative stress, as a generally accepted response to essential oils, was also present, the dominance of a general stress response was demonstrated by reverse transcription-PCR (RT-PCR). The results of RT-PCR and two-dimensional (2D) PAGE revealed that clove oil perturbs the expression of virulence-associated genes taking part in the synthesis of flagella, PEB1, PEB4, lipopolysaccharide (LPS), and serine protease. Loss of motility was also detected by a phenotypic test. Bioautographic analysis revealed that besides its major component, eugenol, at least four other spots of clove EO possessed bactericidal activity against C. jejuni Our findings show that clove EO has a marked antibacterial and potential virulence-modulating effect on C. jejuni IMPORTANCE: This study demonstrates that the components of clove essential oil influence not only the expression of general stress genes but also the expression of virulence-associated genes. Based on this finding, alternative strategies can be worked on to control this important foodborne pathogen.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsCampylobacter jejuniEugenolOils, VolatileSyzygiumVirulenceAnti-Bacterial AgentsBacterial ProteinsEugenolOils, Volatile

Identifiers

PMID27520816
PMCPMC5068167
OpenAlexW2518135969

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.