Evidence map›Paper›PMID 20581666›Full record

ArticleCritical care medicine2010

Ratio of angiopoietin-2 to angiopoietin-1 as a predictor of mortality in acute lung injury patients.

Thida Ong, Dana E McClintock, Richard H Kallet, Lorraine B Ware, Michael A Matthay, Kathleen D Liu

Registry-linked trialAbstract read
In one paragraph

Article in Critical care medicine, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03682757 (Post-Injury Platelet Biology), which is not on this map. Cited by 74 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 2 pooled it
5.1field-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.

NCT03682757 completednot on this mapstarted 2018, after this paper: background citation

Post-Injury Platelet Biology: Mechanisms and Outcomes

TypeobservationalSponsorUniversity of California, San FranciscoRan2018 to 2023Enrolled367ConditionsWound and Injuries, Blood Platelets, Endothelium
3 · Its place in the literature

Who cites it

74 citing papers in PubMed, 2 syntheses or guidelines pooled it, 138 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Changes in cerebral oxygenation and cerebral blood flow during hemodialysis - A simultaneous near-infrared spectroscopy and positron emission tomography study.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Trial
  4. Angiopoietin-2 and outcome in patients with acute decompensated heart failure.Clinical research in cardiology : official journal of the German Cardiac Society · 2015
    Trial
  5. Trial
  6. Trial
  7. Trial
  8. Review
  9. Early Dysregulation of Angiopoietin-1 and -2 as a Predictor of Mortality in Critically Ill Burn Patients.Journal of burn care & research : official publication of the American Burn Association · 2026
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review

14 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

Thida OngDivision of Pulmonary Medicine, Department of Pediatrics, University of California, San Francisco, California, USA.
Dana E McClintock
Richard H Kallet
Lorraine B Ware
Michael A Matthay
Kathleen D Liu
University of California, San Francisco · US

Funding

CTSA: K12 COMPONENTKL2RR024130 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI JOHNSTON, S. CLAIBORNE · 2006 to 2011
$19.3M
Biomarker Profiles in the Diagnosis/Prognosis of ARDSU01HL081332 · NHLBI · VANDERBILT UNIVERSITY · PI WARE, LORRAINE B · 2005 to 2008
$6.0M
Resolution of Clinical Lung InjuryR37HL051856 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MATTHAY, MICHAEL A. · 2006 to 2015
$3.9M
RESOLUTION OF CLINICAL LUNG INJURYR01HL051856 · NHLBI · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MATTHAY, MICHAEL A. · 1996 to 2005
$1.7M
CCTG CLINICAL NETWORK FOR ARDS TREATMENT--CRITICAL CAREN01HR046059 · HR · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MATTHAY, MICHAEL A. · 1994 to 2000
$682k
NCRR NIH HHS KL2 RR024130NCRR NIH HHS KL2RR024130NHLBI NIH HHS HL081332NHLBI NIH HHS HL51856NHLBI NIH HHS HR046059NHLBI NIH HHS N01 HR046059NHLBI NIH HHS R01 HL051856NHLBI NIH HHS R37 HL051856NHLBI NIH HHS U01 HL081332
6 · The paper itself

Abstract

objectiveTo test the hypothesis that the concentration of angiopoietin-2 relative to angiopoietin-1 may be a useful biological marker of mortality in acute lung injury patients. We also tested the association of concentration of angiopoietin-2 relative to angiopoietin-1 with physiologic and biological markers of activated endothelium.

designProspective, observational cohort study.

settingIntensive care units in a tertiary care university hospital and a university-affiliated city hospital. PATIENTS: Fifty-six mechanically ventilated patients with acute lung injury.

interventionsBaseline plasma samples and pulmonary dead-space fraction measurements were collected within 48 hrs of acute lung injury diagnosis. MEASUREMENTS AND MAIN

resultsPlasma levels of angiopoietin-1 and angiopoietin-2 and of biomarkers of endothelial activation were measured by enzyme-linked immunosorbent assay. Baseline concentration of angiopoietin-2 relative to angiopoietin-1 was significantly higher in patients who died (median, 58 [interquartile range, 17-117] vs. 14 [interquartile range, 6-35]; p = .01). In a multivariable analysis stratified by dead-space fraction, concentration of angiopoietin-2 relative to angiopoietin-1 was an independent predictor of death, with an adjusted odds ratio of 4.3 (95% confidence interval, 1.3-13.5; p = .01) in those with an elevated pulmonary dead-space fraction (p = .03 for interaction between pulmonary dead-space fraction and concentration of angiopoietin-2 relative to angiopoietin-1). Moderate to weak correlation was found with biological markers of endothelial activation.

conclusionsThe ratio of concentration of angiopoietin-2 relative to angiopoietin-1 may be a prognostic biomarker of endothelial activation in acute lung injury patients and, along with pulmonary dead-space fraction, may be useful for risk stratification of acute lung injury patients, particularly in identifying subgroups for future research and therapeutic trials.

Indexed as

Acute Lung InjuryAdultAngiopoietin-1Angiopoietin-2BiomarkersEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedMultivariate AnalysisPrognosisProspective StudiesAngiopoietin-1Angiopoietin-2ANGPT1 protein, humanBiomarkers

Identifiers

PMID20581666
PMCPMC4009623
OpenAlexW2025598879

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

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.