Evidence map›Paper›PMID 33905434›Full record

ArticlePloS one2021

Extracellular matrix proteins produced by stromal cells in idiopathic pulmonary fibrosis and lung adenocarcinoma.

Mervi Kreus, Siri Lehtonen, Sini Skarp, Riitta Kaarteenaho

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Review
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  4. Article
  5. Beyond classical collagen: basement membrane collagen IV in age-associated lung diseases.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
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  7. Article
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  19. CRLF1 and CLCF1 in Development, Health and Disease.International journal of molecular sciences · 2022
    Review
  20. Review
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

4 authors at 2 institutions in 1 country.

Mervi KreusResearch Unit of Internal Medicine, University of Oulu, Oulu, Finland.ORCID 0000-0002-1334-7535
Siri LehtonenMedical Research Center Oulu, Oulu University Hospital, Oulu, Finland.ORCID 0000-0002-5578-8232
Sini SkarpNorthern Finland Birth Cohorts, Infrastructure for Population Studies, Faculty of Medicine, University of Oulu, Oulu, Finland.
Riitta KaarteenahoResearch Unit of Internal Medicine, University of Oulu, Oulu, Finland.
Oulu University Hospital · FIUniversity of Oulu · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Idiopathic pulmonary fibrosis (IPF) and lung cancer share common risk factors, epigenetic and genetic alterations, the activation of similar signaling pathways and poor survival. The aim of this study was to examine the gene expression profiles of stromal cells from patients with IPF and lung adenocarcinoma (ADC) as well as from normal lung. The gene expression levels of cultured stromal cells derived from non-smoking patients with ADC from the tumor (n = 4) and the corresponding normal lung (n = 4) as well as from patients with IPF (n = 4) were investigated with Affymetrix microarrays. The expression of collagen type IV alpha 1 chain, periostin as well as matrix metalloproteinase-1 and -3 in stromal cells and lung tissues were examined with quantitative real-time reverse transcriptase polymerase chain reaction and immunohistochemistry, respectively. Twenty genes were similarly up- or down-regulated in IPF and ADC compared to control, while most of the altered genes in IPF and ADC were differently expressed, including several extracellular matrix genes. Collagen type IV alpha 1 chain as well as matrix metalloproteinases-1 and -3 were differentially expressed in IPF compared to ADC. Periostin was up-regulated in both IPF and ADC in comparison to control. All studied factors were localized by immunohistochemistry in stromal cells within fibroblast foci in IPF and stroma of ADC. Despite the similarities found in gene expressions of IPF and ADC, several differences were also detected, suggesting that the molecular changes occurring in these two lung illnesses are somewhat different.

Indexed as

Adenocarcinoma of LungAgedCell Adhesion MoleculesCells, CulturedCollagen Type IVExtracellular MatrixExtracellular Matrix ProteinsFemaleFibroblastsGene ExpressionGene Expression ProfilingGene Expression RegulationHumansIdiopathic Pulmonary FibrosisLungLung NeoplasmsCell Adhesion MoleculesCollagen Type IVExtracellular Matrix ProteinsMatrix Metalloproteinase 1Matrix Metalloproteinase 3MMP1 protein, humanPOSTN protein, human

Identifiers

PMID33905434
PMCPMC8078755
OpenAlexW3158737133

What OpenQuestion holds

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Registered trials

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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.