Evidence map›Paper›PMID 20649596›Full record

ArticleBritish journal of pharmacology2010

Exposing rodents to a combination of tobacco smoke and lipopolysaccharide results in an exaggerated inflammatory response in the lung.

E L Hardaker, M S Freeman, N Dale, P Bahra, F Raza, K H Banner, C Poll

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

30 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
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  4. Research Progress on Animal Models of Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2026
    Review
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  6. Article
  7. American journal of respiratory cell and molecular biology · 2023
    Article
  8. Antioxidants (Basel, Switzerland) · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Protective Effect of Jianpiyifei II Granule against Chronic Obstructive Pulmonary Disease via NF-Evidence-based complementary and alternative medicine : eCAM · 2018
    Article
  18. Article
  19. Article
  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

7 authors at 2 institutions in 2 countries.

E L HardakerNovartis Institutes for Biomedical Research, Horsham, UK. liz.hardaker@novartis.com
M S Freeman
N Dale
P Bahra
F Raza
K H Banner
C Poll
Novartis (United Kingdom) · GBNovartis (Switzerland) · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeAcute exacerbations of chronic obstructive pulmonary disease (COPD), which are often associated with respiratory infections, are defined as a worsening of symptoms that require a change in medication. Exacerbations are characterized by a reduction in lung function, quality of life and are associated with increased pro-inflammatory mediators in the lung. Our aim was to develop an animal model to mimic aspects of this exaggerated inflammatory response by combining key etiological factors, tobacco smoke (TS) and bacterial lipopolysaccharide (LPS). EXPERIMENTAL APPROACH: Rats were exposed to TS for 30 min twice a day for 2 days. On day 3 animals were exposed to LPS for 30 min followed by exposure to TS 5 h later. Inflammation, mucus and lung function were assessed 24 h after LPS. KEY

resultsNeutrophils, mucus, oedema and cytotoxicity in lung and/or bronchoalveolar lavage was increased in animals exposed to combined LPS and TS, compared with either stimulus alone. Lung function was impaired in animals exposed to combined LPS and TS. Inflammatory cells, oedema and mucus were unaffected by pretreatment with the corticosteroid, budesonide, but were reduced by the phosphodiesterase 4 selective inhibitor roflumilast. Additionally, lung function was improved by roflumilast. CONCLUSIONS AND IMPLICATIONS: We have established an in vivo model mimicking characteristic features of acute exacerbations of COPD including lung function decline and increased lung inflammation. This model may be useful to investigate molecular and cellular mechanisms underlying such exacerbations, to identify new targets and to discover novel therapeutic agents.

Indexed as

LipopolysaccharidesAdrenal Cortex HormonesAminopyridinesAnimalsAnti-Inflammatory AgentsBenzamidesBronchoalveolar Lavage FluidBudesonideCyclopropanesDisease Models, AnimalInflammation MediatorsLungMaleMucusNeutrophil InfiltrationPhosphodiesterase 4 InhibitorsAdrenal Cortex HormonesAminopyridinesAnti-Inflammatory AgentsBenzamidesBudesonideCyclopropanesInflammation Mediatorslipopolysaccharide, Escherichia coli O111 B4LipopolysaccharidesPhosphodiesterase 4 InhibitorsPhosphodiesterase InhibitorsRoflumilastTobacco Smoke Pollution

Identifiers

PMID20649596
PMCPMC2958644
OpenAlexW1708551356

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.