Evidence map›Paper›PMID 19270179›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2009

MMP9 modulates tight junction integrity and cell viability in human airway epithelia.

Paola D Vermeer, James Denker, Miriam Estin, Thomas O Moninger, Shaf Keshavjee, Philip Karp, Joel N Kline, Joseph Zabner

Abstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
–field-weighted citation impact
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

86 citing papers in PubMed.

  1. Trial
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  11. Matrix Metallopeptidase 9 Promotes Contraction in Human Uterine Myometrium.Reproductive sciences (Thousand Oaks, Calif.) · 2025
    Article
  12. Article
  13. Article
  14. In vitro Study of Fungus-Like OrganismsJournal of inflammation research · 2025
    Article
  15. Revealing the impact ofFrontiers in immunology · 2025
    Article
  16. The Potential Proallergenic Activity ofJournal of inflammation research · 2025
    Article
  17. Matrix Metalloproteinase-9 Signaling Regulates Colon Barrier Integrity in Models of HIV Infection.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2024
    Article
  18. Article
  19. Article
  20. Review

26 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

8 authors.

Paola D VermeerDepartment of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.
James Denker
Miriam Estin
Thomas O Moninger
Shaf Keshavjee
Philip Karp
Joel N Kline
Joseph Zabner

Funding

Ligand-Receptor Segregation and Airway RemodelingR01HL075276 · NHLBI · UNIVERSITY OF IOWA · PI ZABNER, JOSEPH · 2004 to 2007
$1.3M
NHLBI NIH HHS R01-HL-075276-04
6 · The paper itself

Abstract

The family of zinc- and calcium-dependent matrix metalloproteases (MMPs) play an important role in remodeling of the airways in disease. Transcriptional regulation by proinflammatory cytokines increases lymphocyte-derived MMP9 levels in the airway lumen of asthmatics. Moreover, the levels of the MMP9 inhibitor, tissue inhibitor of metalloprotease (TIMP1), are decreased leading to increased protease activity. The mechanism by which MMP9 activity leads to asthma pathogenesis and remodeling remains unclear. Using a model of well-differentiated human airway epithelia, we found that apical MMP9 significantly increases transepithelial conductance. Moreover, apical MMP9 treatment decreased immunostaining of tight junction proteins suggesting disruption of barrier function. Consistent with this, viruses gained access to the epithelial basolateral surface after MMP9 treatment, which increased infection efficiency. All of these effects were blocked by TIMP1. In addition, loss of epithelial integrity correlated with increased epithelial cell death. Thus we hypothesized that MMP9 exerts its effects on the epithelium by cleaving one or more components of cell-cell junctions and triggering anoikis. Taken together, these data suggest that a component of airway remodeling associated with asthma may be directly regulated by MMP9.

Indexed as

Adherens JunctionsAnoikisCell Membrane PermeabilityCell PolarityCell SurvivalClaudin-1Electric ConductivityEpithelial CellsFas Ligand Proteinfas ReceptorHumansLungMatrix Metalloproteinase 9Membrane ProteinsOccludinProtein TransportClaudin-1CLDN1 protein, humanFas Ligand ProteinFAS protein, humanfas ReceptorMatrix Metalloproteinase 9Membrane ProteinsOccludinOCLN protein, humanReceptor, PAR-1Thrombin

Identifiers

PMID19270179
PMCPMC2681350

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.