Cited by 77Oral microbiology and periodontitis researchAdvanced Proteomics Techniques and ApplicationsSalivary Gland Disorders and Functions

Metaproteomics of saliva identifies human protein markers specific for individuals with periodontitis and dental caries compared to orally healthy controls

Open access
Belstrøm, Daniel, Jersie-Christensen, Rosa R., Lyon, David, Damgaard, Christian, Jensen, Lars J., Holmstrup, Palle, Olsen, Jesper V.·2016·PeerJ

Abstract

Background: The composition of the salivary microbiota has been reported to differentiate between patients with periodontitis, dental caries and orally healthy individuals. To identify characteristics of diseased and healthy saliva we thus wanted to compare saliva metaproteomes from patients with periodontitis and dental caries to healthy individuals. Methods: Stimulated saliva samples were collected from 10 patients with periodontitis, 10 patients with dental caries and 10 orally healthy individuals. The proteins in the saliva samples were subjected to denaturing buffer and digested enzymatically with LysC and trypsin. The resulting peptide mixtures were cleaned up by solid-phase extraction and separated online with 2 h gradients by nano-scale C 18 reversed-phase chromatography connected to a mass spectrometer through an electrospray source. The eluting peptides were analyzed on a tandem mass spectrometer operated in data-dependent acquisition mode. Results: We identified a total of 35,664 unique peptides from 4,161 different proteins, of which 1,946 and 2,090 were of bacterial and human origin, respectively. The human protein profiles displayed significant overexpression of the complement system and inflammatory markers in periodontitis and dental caries compared to healthy controls. Bacterial proteome profiles and functional annotation were very similar in health and disease. Conclusions: Overexpression of proteins related to the complement system and inflammation seems to correlate with oral disease status. Similar bacterial proteomes in healthy and diseased individuals suggests that the salivary microbiota predominantly thrives in a planktonic state expressing no disease-associated characteristics of metabolic activity.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.7717/peerj.2433

Cites

51 of 51 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Proteomic applications have been applied to understand changes in the proteome that diverge states of periodontal health from disease and to further characterize various periodontal disease states, including gingivitis, mild, moderate, chronic, and aggressive periodontitis.

    “Proteomic applications have been applied to understand changes in the proteome that diverge states of periodontal health from disease and to further characterize various periodontal disease states, including gingivitis, mild, moderate, chronic, and aggressive periodontitis.70, 101, 102, 103, 104”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Belstrøm, D., Jersie-Christensen, R. R., Lyon, D., Damgaard, C., Jensen, L. J., Holmstrup, P., & Olsen, J. V.
Affiliations
University of Copenhagen (DK)
Corresponding author
Belstrøm, Daniel
Venue
PeerJ
Publisher
PeerJ
Published
2016-09-14
Volume
4
Pages
e2433
ISSN
2167-8359 (ISSN-L)
OpenAlex
W2520478522
Cited by
77
References
51
Citations by year
2026: 7 · 2025: 9 · 2024: 7 · 2023: 6 · 2022: 5 · 2021: 8 · 2020: 11 · 2019: 10 · 2018: 6 · 2017: 8
FWCI
11.95
Type
journal article
Language
en
Open access
Locations
  • PeerJ (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • University of Copenhagen (KU2016 programme)
  • Novo Nordisk Foundation (NNF14CC0001)
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Health Sciences › Medicine › Physiology › Salivary Gland Disorders and Functions
Keywords
periodontitis, dental caries, complement system, inflammatory markers, salivary microbiota, bacterial proteome, oral diseases, stimulated saliva

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review