Evidence map›Paper›PMID 20444277›Full record

ArticleBMC pulmonary medicine2010

Effects of phosphodiesterase 4 inhibition on bleomycin-induced pulmonary fibrosis in mice.

Sergey Udalov, Rio Dumitrascu, Soni S Pullamsetti, Hamza M Al-tamari, Norbert Weissmann, Hossein A Ghofrani, Andreas Guenther, Robert Voswinckel, Werner Seeger, Friedrich Grimminger and 1 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in BMC pulmonary medicine, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

32 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
  2. Immunological mechanisms and therapeutic approaches in pulmonary fibrosis.European respiratory review : an official journal of the European Respiratory Society · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 1 country.

Sergey UdalovUniversity of Giessen, Department of Internal Medicine, Giessen, Germany.
Rio Dumitrascu
Soni S Pullamsetti
Hamza M Al-tamari
Norbert Weissmann
Hossein A Ghofrani
Andreas Guenther
Robert Voswinckel
Werner Seeger
Friedrich Grimminger
Ralph T Schermuly
University of Giessen · DEGiessen School of Theology · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPulmonary fibrosis (PF) is a group of devastating and largely irreversible diseases. Phosphodiesterase (PDE) 4 is involved in the processes of remodeling and inflammation, which play key role in tissue fibrosis. The aim of the study was, therefore, to investigate the effect of PDE4 inhibition in experimental model of PF.

methodsPF was induced in C57BL/6N mice by instillation of bleomycin. Pharmacological inhibition of PDE4 was achieved by using cilomilast, a selective PDE4 inhibitor. Changes in either lung inflammation or remodeling were evaluated at different stages of experimental PF. Lung inflammation was assessed by bronchoalveolar lavage fluid (BALF) differential cell count and reverse transcription quantitative polymerase chain reaction (RT-qPCR) for inflammatory cytokines. Changes in tissue remodeling were evaluated by pulmonary compliance measurement, quantified pathological examination, measurement of collagen deposition and RT-qPCR for late remodeling markers. Survival in all groups was analyzed as well.

resultsPDE4 inhibition significantly reduced the total number of alveolar inflammatory cells in BALF of mice with bleomycin-induced PF at early fibrosis stage (days 4 and 7). Number of macrophages and lymphocytes, but not neutrophils, was significantly reduced as well. Treatment decreased lung tumor necrosis factor (TNF)-alpha mRNA level and increased mRNA level of interleukin (IL)-6 but did not influence IL-1 beta. At later stage (days 14 and 24) cilomilast improved lung function, which was shown by increase in lung compliance. It also lowered fibrosis degree, as was shown by quantified pathological examination of Hematoxilin-Eosin stained lung sections. Cilomilast had no significant effect on the expression of late remodeling markers such as transforming growth factor (TGF)-beta1 and collagen type Ia1 (COL(I)alpha1). However, it tended to restore the level of lung collagen, assessed by SIRCOL assay and Masson's trichrome staining, and to improve the overall survival.

conclusionsSelective PDE4 inhibition suppresses early inflammatory stage and attenuates the late stage of experimental pulmonary fibrosis.

Indexed as

Phosphodiesterase 4 InhibitorsAnimalsBleomycinCarboxylic AcidsCollagen Type ICollagen Type I, alpha 1 ChainCyclic Nucleotide Phosphodiesterases, Type 4Cyclohexanecarboxylic AcidsDisease Models, AnimalInterleukin-1betaInterleukin-6LungMaleMiceMice, Inbred C57BLNitrilesBleomycinCarboxylic AcidsCilomilastCollagen Type ICollagen Type I, alpha 1 ChainCyclic Nucleotide Phosphodiesterases, Type 4Cyclohexanecarboxylic AcidsInterleukin-1betaInterleukin-6NitrilesPhosphodiesterase 4 InhibitorsPhosphodiesterase InhibitorsTransforming Growth Factor beta1Tumor Necrosis Factor-alpha

Identifiers

PMID20444277
PMCPMC2881047
OpenAlexW2009480696

What OpenQuestion holds

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LicenceCC BY
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.