Evidence map›Paper›PMID 23499992›Full record

ArticleBiochimica et biophysica acta2013

Fibrosis of two: Epithelial cell-fibroblast interactions in pulmonary fibrosis.

Norihiko Sakai, Andrew M Tager

Open access · greenAbstract read
In one paragraph

Article in Biochimica et biophysica acta, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 168 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
168citing papers in PubMed, 1 pooled it
11.1field-weighted citation impact, top 1% 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

168 citing papers in PubMed, 1 synthesis or guideline pooled it, 287 citations in OpenAlex.

  1. Pooled it
  2. Article
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  7. Article
  8. Combined impact of ROR2 and its ligands on the pathogenesis and prognosis of idiopathic pulmonary fibrosis.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2026
    Article
  9. Article
  10. Article
  11. Antifibrotic Effects ofInternational journal of molecular sciences · 2026
    Article
  12. Article
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  14. Review
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  19. p53-miR-34a feedback in lung fibroblasts regulates antifibrotic effects of CSP7, nintedanib, and pirfenidone.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  20. Article

108 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

2 authors at 1 institution in 1 country.

Norihiko SakaiCenter for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA; Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA.
Andrew M Tager
Harvard University · US

Funding

Protective Role of the S1P-S1P1 Pathway in Pulmonary FibrosisR01HL108975 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI TAGER, ANDREW M · 2011 to 2015
$1.8M
The LPA Pathway in Lung Fibrosis: Novel Mediators and New Therapeutic TargetsR01HL095732 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI TAGER, ANDREW M · 2009 to 2010
$922k
NHLBI NIH HHS R01 HL095732NHLBI NIH HHS R01 HL108975
6 · The paper itself

Abstract

Idiopathic pulmonary fibrosis (IPF) is characterized by the progressive and ultimately fatal accumulation of fibroblasts and extracellular matrix in the lung that distorts its architecture and compromises its function. IPF is now thought to result from wound-healing processes that, although initiated to protect the host from injurious environmental stimuli, lead to pathological fibrosis due to these processes becoming aberrant or over-exuberant. Although the environmental stimuli that trigger IPF remain to be identified, recent evidence suggests that they initially injure the alveolar epithelium. Repetitive cycles of epithelial injury and resultant alveolar epithelial cell death provoke the migration, proliferation, activation and myofibroblast differentiation of fibroblasts, causing the accumulation of these cells and the extracellular matrix that they synthesize. In turn, these activated fibroblasts induce further alveolar epithelial cell injury and death, thereby creating a vicious cycle of pro-fibrotic epithelial cell-fibroblast interactions. Though other cell types certainly make important contributions, we focus here on the "pas de deux" (steps of two), or perhaps more appropriate to IPF pathogenesis, the "folie à deux" (madness of two) of epithelial cells and fibroblasts that drives the progression of pulmonary fibrosis. We describe the signaling molecules that mediate the interactions of these cell types in their "fibrosis of two", including transforming growth factor-β, connective tissue growth factor, sonic hedgehog, prostaglandin E2, angiotensin II and reactive oxygen species. This article is part of a Special Issue entitled: Fibrosis: Translation of basic research to human disease.

Indexed as

FibroblastsPulmonary FibrosisEpithelial CellsHumansIdiopathic Pulmonary FibrosisLungPulmonary Alveoli

Identifiers

PMID23499992
PMCPMC4041487
OpenAlexW1982159478

What OpenQuestion holds

Textmetadata
LicenceTDM
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.