Evidence map›Paper›PMID 29209035›Full record

ArticleScientific reports2017

Disturbed blood flow worsens endothelial dysfunction in moderate-severe chronic obstructive pulmonary disease.

Otto F Barak, Suzana Mladinov, Ryan L Hoiland, Joshua C Tremblay, Stephen R Thom, Ming Yang, Tanja Mijacika, Zeljko Dujic

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 9% 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

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

  1. Pooled it
  2. Trial
  3. Review
  4. The importance of mechanical forces in chronic respiratory diseases.European respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  5. Article
  6. Pulmonary Vascular Dysfunctions in Cystic Fibrosis.Physiology (Bethesda, Md.) · 2024
    Review
  7. Article
  8. Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Observational
  17. Article
  18. Article
  19. 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

8 authors at 5 institutions in 4 countries.

Otto F BarakDepartment of Physiology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.
Suzana MladinovClinic for Pulmonary Diseases, University Hospital Centre Split, Split, Croatia.
Ryan L HoilandCentre for Heart, Lung and Vascular Health, University of British Columbia, Okanagan Campus, Kelowna, British Columbia, Canada.ORCID 0000-0002-5657-0059
Joshua C TremblayCardiovascular Stress Response Laboratory, School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.ORCID 0000-0002-1667-294X
Stephen R ThomDepartment of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Ming YangDepartment of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Tanja MijacikaDepartment of Integrative Physiology, University of Split School of Medicine, Split, Croatia.
Zeljko DujicDepartment of Integrative Physiology, University of Split School of Medicine, Split, Croatia. zeljko.dujic@mefst.hr.
University of Split · HRUniversity of Maryland, Baltimore · USQueen's University · CAUniversity of British Columbia · CAUniversity of Novi Sad · RS

Funding

NOS1AP and Capon Associated Impaired Healing in Those with Diabetic Foot UlcersR01DK116199 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI MARGOLIS, DAVID, THOM, STEPHEN RAYMOND · 2018 to 2021
$2.3M
NIDDK NIH HHS R01 DK116199
6 · The paper itself

Abstract

The aims of this study were: (1) to test whether oscillatory shear stress further exacerbates endothelial dysfunction in patients with moderate-severe COPD, and (2) to test whether low flow oxygen administration improves endothelial function and is protective against oscillatory shear stress-induced endothelial dysfunction in patients with moderate-severe COPD. In 17 patients and 10 age-matched non-smoking control subjects we examined brachial artery flow-mediated dilation (FMD) and circulating microparticles before and after 20 minutes of experimentally-induced oscillatory shear stress. COPD patients performed this intervention a second time following a 20-minute wash in period of low flow supplemental oxygen to normalize arterial oxygen saturation. COPD patients had ~six-fold greater baseline retrograde shear rate (P < 0.05) and lower FMD (P < 0.05). The oscillatory shear stress intervention induced significant decreases in brachial artery FMD of all groups (P < 0.05). Oscillatory shear stress elevated circulating markers of endothelial cell apoptosis (CD31+/CD41b- microparticles) in COPD patients, but not age-matched controls. Supplemental oxygen administration abrogated the oscillatory shear stress-induced increase in CD31+/CD41b- microparticles, and improved FMD after accounting for the shear stress stimulus. We have demonstrated that acutely disturbed blood flow with increased retrograde shear stress further deteriorates the already impaired endothelial function with attendant endothelial apoptosis in patients with moderate-severe COPD.

Indexed as

AgedBrachial ArteryCase-Control StudiesCell-Derived MicroparticlesDilatationEndothelium, VascularFemaleHumansMaleMiddle AgedOxygenPulmonary Disease, Chronic ObstructiveRegional Blood FlowStress, MechanicalVasodilationOxygen

Identifiers

PMID29209035
PMCPMC5717042
OpenAlexW2769056269

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.