Evidence map›Paper›PMID 26283334›Full record

ArticleInfection and immunity2015

Gingipains from the Periodontal Pathogen Porphyromonas gingivalis Play a Significant Role in Regulation of Angiopoietin 1 and Angiopoietin 2 in Human Aortic Smooth Muscle Cells.

Boxi Zhang, Hazem Khalaf, Allan Sirsjö, Torbjörn Bengtsson

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

22 citing papers in PubMed, 38 citations in OpenAlex.

  1. OralJournal of oral microbiology · 2026
    Article
  2. Review
  3. Review
  4. The Roles of Periodontal Bacteria in Atherosclerosis.International journal of molecular sciences · 2023
    Review
  5. Observational
  6. Frontiers in oncology · 2023
    Article
  7. Implications ofFrontiers in cellular and infection microbiology · 2022
    Review
  8. Review
  9. The Effects ofFrontiers in immunology · 2021
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Observational
  18. Article
  19. Review
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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 1 institution in 1 country.

Boxi ZhangDepartment of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden boxi.zhang@oru.se.ORCID http://orcid.org/0000-0001-7758-6204
Hazem KhalafDepartment of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden.
Allan SirsjöDepartment of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden.
Torbjörn BengtssonDepartment of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden.
Örebro University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Angiopoietin 1 (Angpt1) and angiopoietin 2 (Angpt2) are the ligands of tyrosine kinase (Tie) receptors, and they play important roles in vessel formation and the development of inflammatory diseases, such as atherosclerosis. Porphyromonas gingivalis is a Gram-negative periodontal bacterium that is thought to contribute to the progression of cardiovascular disease. The aim of this study was to investigate the role of P. gingivalis infection in the modulation of Angpt1 and Angpt2 in human aortic smooth muscle cells (AoSMCs). We exposed AoSMCs to wild-type (W50 and 381), gingipain mutant (E8 and K1A), and fimbrial mutant (DPG-3 and KRX-178) P. gingivalis strains and to different concentrations of tumor necrosis factor (TNF). The atherosclerosis risk factor TNF was used as a positive control in this study. We found that P. gingivalis (wild type, K1A, DPG3, and KRX178) and TNF upregulated the expression of Angpt2 and its transcription factor ETS1, respectively, in AoSMCs. In contrast, Angpt1 was inhibited by P. gingivalis and TNF. However, the RgpAB mutant E8 had no effect on the expression of Angpt1, Angpt2, or ETS1 in AoSMCs. The results also showed that ETS1 is critical for P. gingivalis induction of Angpt2. Exposure to Angpt2 protein enhanced the migration of AoSMCs but had no effect on proliferation. This study demonstrates that gingipains are crucial to the ability of P. gingivalis to markedly increase the expressed Angpt2/Angpt1 ratio in AoSMCs, which determines the regulatory role of angiopoietins in angiogenesis and their involvement in the development of atherosclerosis. These findings further support the association between periodontitis and cardiovascular disease.

Indexed as

Adhesins, BacterialAngiopoietin-1Angiopoietin-2AortaBacteroidaceae InfectionsCells, CulturedCysteine EndopeptidasesGingipain Cysteine EndopeptidasesHumansMyocytes, Smooth MusclePeriodontitisPorphyromonas gingivalisTumor Necrosis Factor-alphaUp-RegulationAdhesins, BacterialAngiopoietin-1Angiopoietin-2Cysteine EndopeptidasesGingipain Cysteine EndopeptidasesTumor Necrosis Factor-alpha

Identifiers

PMID26283334
PMCPMC4598411
OpenAlexW2172712625

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.