Evidence map›Paper›PMID 15891109›Full record

ArticleAmerican journal of respiratory cell and molecular biology2005

Proteinase-activated receptor-1 mediates elastase-induced apoptosis of human lung epithelial cells.

Tomoko Suzuki, Theo J Moraes, Eric Vachon, Hedy H Ginzberg, Tsun-Tsao Huang, Michael A Matthay, Morley D Hollenberg, John Marshall, Christopher A G McCulloch, Maria Teresa Herrera Abreu and 2 more

Abstract read
In one paragraph

Article in American journal of respiratory cell and molecular biology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 131 citations in OpenAlex.

  1. Neutrophilic inflammation in bronchiectasis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  2. Article
  3. Mitochondria in health, disease, and aging.Physiological reviews · 2023
    Review
  4. Review
  5. Review
  6. Article
  7. Proteolysis and Deficiency of α1-Proteinase Inhibitor in SARS-CoV-2 Infection.Biochemistry (Moscow) Supplement. Series B, Biomedical chemistry · 2022
    Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 1 institution in 2 countries.

Tomoko SuzukiDivision of Respirology, Department of Medicine, University of Toronto and Toronto General Hospital Research Institute, 1 King's College Circle, Toronto, Ontario, M5S 1A8 Canada.
Theo J Moraes
Eric Vachon
Hedy H Ginzberg
Tsun-Tsao Huang
Michael A Matthay
Morley D Hollenberg
John Marshall
Christopher A G McCulloch
Maria Teresa Herrera Abreu
Chung-Wai Chow
Gregory P Downey
University Health Network · CA

Funding

Therapy for Clinical Acute Lung Injury with APCP50HL074005 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BURLINGAME, ALMA L · 2003 to 2007
$9.6M
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
NHLBI NIH HHS HL 51856NHLBI NIH HHS P50 HL 74005
6 · The paper itself

Abstract

Apoptosis of distal lung epithelial cells plays a pivotal role in the pathogenesis of acute lung injury. In this context, proteinases, either circulating or leukocyte-derived, may contribute to epithelial apoptosis and lung injury. We hypothesized that apoptosis of lung epithelial cells induced by leukocyte elastase is mediated via the proteinase activated receptor (PAR)-1. Leukocyte elastase, thrombin, and PAR-1-activating peptide, but not the control peptide, induced apoptosis in human airway and alveolar epithelial cells as assessed by increases in cytoplasmic histone-associated DNA fragments and TUNEL staining. These effects were largely prevented by a specific PAR-1 antagonist and by short interfering RNA directed against PAR-1. To ascertain the mechanism of epithelial apoptosis, we determined that PAR-1AP, thrombin, and leukocyte elastase dissipated mitochondrial membrane potential, induced translocation of cytochrome c to the cytosol, enhanced cleavage of caspase-9 and caspase-3, and led to JNK activation and Akt inhibition. In concert, these observations provide strong evidence that leukocyte elastase mediates apoptosis of human lung epithelial cells through PAR-1-dependent modulation of the intrinsic apoptotic pathway via alterations in mitochondrial permeability and by modulation of JNK and Akt.

Indexed as

ApoptosisCaspase 3Caspase 9CaspasesCells, CulturedHumansJNK Mitogen-Activated Protein KinasesLeukocyte ElastaseMitochondriaOligopeptidesProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktReceptor, PAR-1Respiratory Distress SyndromeRespiratory MucosaAKT1 protein, humanCASP3 protein, humanCASP9 protein, humanCaspase 3Caspase 9CaspasesJNK Mitogen-Activated Protein KinasesLeukocyte ElastaseOligopeptidesPAR-1-activating peptideProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktReceptor, PAR-1RNA, Small Interfering

Identifiers

PMID15891109
PMCPMC2715314
OpenAlexW2134499077

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.