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ArticleInflammation research : official journal of the European Histamine Research Society ... [et al.]2014

Clinical associations between IL-17 family cytokines and periodontitis and potential differential roles for IL-17A and IL-17E in periodontal immunity.

Raja Azman Awang, Raja Azman, David F Lappin, Alexandrea MacPherson, Marcello Riggio, Douglas Robertson, Penny Hodge, Gordon Ramage, Shauna Culshaw, Philip M Preshaw and 2 more

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Article in Inflammation research : official journal of the European Histamine Research Society ... [et al.], 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 43 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 4 pooled it
–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

43 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. γδ T cells in oral diseases.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2024
    Pooled it
  4. Pooled it
  5. Trial
  6. Article
  7. Article
  8. Impact of LiveMicroorganisms · 2025
    Article
  9. Serum cytokines in periodontal diseases.Periodontology 2000 · 2025
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Raja Azman Awang
Raja AzmanInfection and Immunity Research Group, Immunology, Level 9, Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, 378 Sauchiehall Street, Glasgow, G2 3JZ, UK.
David F Lappin
Alexandrea MacPherson
Marcello Riggio
Douglas Robertson
Penny Hodge
Gordon Ramage
Shauna Culshaw
Philip M Preshaw
John Taylor
Christopher Nile

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIL-17A is implicated in periodontitis pathogenesis. The roles of IL-17B-IL-17F and IL-17A/F are unknown. This study aimed to determine clinical associations between IL-17 family cytokines and periodontitis and to investigate the biological roles of IL-17A and IL-17E using in vitro model systems. MATERIALS AND

methodsSamples from 97 patients with periodontitis and 77 healthy volunteers were used in the study. Serum, saliva and gingival crevicular fluid (GCF) levels of IL-17 family cytokines were measured by ELISA. Oral keratinocytes were stimulated with a P. gingivalis biofilm, or IL-17A, in the presence and absence of IL-17E and the expression of IL-8 and CXCL5 were investigated by ELISA and real-time-PCR. NF-κB phosphorylation in similar experiments was also measured using a cell-based ELISA.

resultsSerum, saliva and GCF IL-17A levels were higher in periodontitis patients and correlated positively with clinical parameters of attachment loss, pocket depth and bleeding on probing. Serum IL-17E levels were lower in periodontitis patients and the serum IL-17A:IL-17E ratio correlated positively with clinical parameters. In vitro, IL-17E inhibited Porphyromonas gingivalis and IL-17A induced expression of chemokines by reducing phosphorylation of the NF-κB p65 subunit.

conclusionsSerum IL-17A:IL-17E may be a marker of disease severity. IL-17E may have opposing roles to IL-17A in periodontitis pathogenesis. IL-17E can negatively regulate IL-17A and periodontal pathogen induced expression of chemokines by oral keratinocytes.

Indexed as

Gene Expression RegulationAdultBiofilmsBiomarkersCase-Control StudiesCoculture TechniquesCytokinesEnzyme-Linked Immunosorbent AssayFemaleGingival Crevicular FluidHumansInterleukin-17KeratinocytesMaleMiddle AgedPeriodontitisBiomarkersCytokinesInterleukin-17

Identifiers

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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.