Evidence map›Paper›PMID 27337945›Full record

ArticleClinical research in cardiology : official journal of the German Cardiac Society2016

Differences between perivascular adipose tissue surrounding the heart and the internal mammary artery: possible role for the leptin-inflammation-fibrosis-hypoxia axis.

Ioannis Drosos, Georgios Chalikias, Maria Pavlaki, Dimitra Kareli, Grigorios Epitropou, Georgios Bougioukas, Dimitrios Mikroulis, Fotios Konstantinou, Alexandra Giatromanolaki, Konstantinos Ritis and 4 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Clinical research in cardiology : official journal of the German Cardiac Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
5.4field-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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Pericoronary Fat Attenuation Index Mediates the Link Between TyG Index and OSA Risk in Type 2 Diabetes.Diabetes, metabolic syndrome and obesity : targets and therapy · 2026
    Article
  3. Article
  4. Progress in the Study of Fra-2 in Respiratory Diseases.International journal of molecular sciences · 2024
    Review
  5. Article
  6. Perivascular Adipose Tissue Oxidative Stress in Obesity.Antioxidants (Basel, Switzerland) · 2023
    Review
  7. Review
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Perivascular Adipose Tissue Inflammation in Ischemic Heart Disease.Arteriosclerosis, thrombosis, and vascular biology · 2021
    Article
  15. Review
  16. Article
  17. Observational
  18. Review
  19. Adipokines and Inflammation: Focus on Cardiovascular Diseases.International journal of molecular sciences · 2020
    Review
  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

14 authors at 3 institutions in 2 countries.

Ioannis DrososDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Georgios ChalikiasDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Maria PavlakiDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Dimitra KareliDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Grigorios EpitropouDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Georgios BougioukasDepartment of Cardiovascular Surgery, Democritus University of Thrace, Alexandroupolis, Greece.
Dimitrios MikroulisDepartment of Cardiovascular Surgery, Democritus University of Thrace, Alexandroupolis, Greece.
Fotios KonstantinouDepartment of Cardiovascular Surgery, Democritus University of Thrace, Alexandroupolis, Greece.
Alexandra GiatromanolakiDepartment of Pathology, Democritus University of Thrace, Alexandroupolis, Greece.
Konstantinos RitisLaboratory of Molecular Haematology, Democritus University of Thrace, Alexandroupolis, Greece.
Thomas MünzelCenter for Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
Dimitrios TziakasDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Stavros KonstantinidesDepartment of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece.
Katrin SchäferCenter for Cardiology, Department of Cardiology 1, University Medical Center of the Johannes Gutenberg University, Mainz, Germany. katrin.schaefer@unimedizin-mainz.de.
Democritus University of Thrace · GRUniversity Medical Center of the Johannes Gutenberg University Mainz · DEJohannes Gutenberg University Mainz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe factors mediating the paracrine effects of perivascular adipose tissue (PVAT) in atherosclerosis are largely unknown. The adipokine leptin has been implicated in the increased cardiovascular risk in obesity and may locally promote neointima formation independently of circulating leptin levels. In patients with established coronary artery disease, we examined the expression of leptin as well as of its possible inducers in 'cardiac' PVAT surrounding the aortic root and coronary arteries (C-PVAT), and compared it to the PVAT surrounding the internal mammary artery (IMA-PVAT), a vessel resistant to atherosclerosis. METHODS AND

resultsTissue specimens collected from male patients undergoing coronary artery bypass surgery were processed for real-time PCR, ELISA, in situ hybridization, and immunohistochemistry analysis. Leptin protein expression was elevated in C-PVAT compared to IMA-PVAT, independent of serum leptin levels. Compared to IMA-PVAT, C-PVAT exhibited more pronounced angiogenesis and inflammation, as indicated by significantly higher numbers of PECAM1-positive vessels and CD68-positive macrophages, and was characterized by a greater extent of fibrosis and hypoxia. Increased expression of hypoxia-inducible factor-1α and Fos-like antigen (FOSL)2, factors known to enhance leptin gene transcription, was observed in C-PVAT. As a proof of concept, exposure of human adipocytes to chemical hypoxia resulted in significantly increased FOSL2 and leptin mRNA levels.

conclusionsA higher degree of local tissue hypoxia and up-regulation of leptin expression in the perivascular adipose tissue, along with increased vascularization, inflammation, and fibrosis, may contribute to the increased atherosclerotic plaque burden in the coronary arteries compared to the IMA.

Indexed as

Cellular MicroenvironmentAdipocytesAdipose TissueAgedAngiogenic ProteinsBiomarkersCell HypoxiaCell Line, TumorCoronary Artery DiseaseCoronary VesselsCulture Media, ConditionedFibrosisHumansInflammation MediatorsLeptinMaleAngiogenic ProteinsBiomarkersCulture Media, ConditionedInflammation MediatorsLeptinCoronary artery diseaseFOSL2LeptinObesityPerivascular adipose tissue

Identifiers

PMID27337945
OpenAlexW2463413273

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.