Evidence map›Paper›PMID 15169552›Full record

ArticleRespiratory research2004

The effect of selective phosphodiesterase inhibitors, alone and in combination, on a murine model of allergic asthma.

Robert A Clayton, Colin A J Dick, Alison Mackenzie, Michiaki Nagasawa, Deirdre Galbraith, Stuart F Hastings, Simon J MacKenzie

Abstract readComparative Study
In one paragraph

Article in Respiratory research, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Trial
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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.

Robert A ClaytonScottish Biomedical, West of Scotland Science Park, Todd Campus, Glasgow, Scotland, G20 OXA, UK. rob.clayton@Scottish-biomedical.com
Colin A J Dick
Alison Mackenzie
Michiaki Nagasawa
Deirdre Galbraith
Stuart F Hastings
Simon J MacKenzie

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe anti-inflammatory effects of the selective phosphodiesterase (PDE) inhibitors cilostazol (PDE 3), RO 20-1724 (PDE 4) and sildenafil (PDE 5) were examined in a murine model of allergic asthma. These compounds were used alone and in combination to determine any potential synergism, with dexamethasone included as a positive control.

methodsControl and ovalbumin sensitised Balb/C mice were administered orally with each of the possible combinations of drugs at a dose of 3 mg/Kg for 10 days.

resultsWhen used alone, RO 20-1724 significantly reduced eosinophil influx into lungs and lowered tumour necrosis factor-alpha, interleukin-4 and interleukin-5 levels in the bronchoalveolar lavage fluid when compared to untreated mice. Treatment with cilostazol or sildenafil did not significantly inhibit any markers of inflammation measured. Combining any of these PDE inhibitors produced no additive or synergistic effects. Indeed, the anti-inflammatory effects of RO 20-1724 were attenuated by co-administration of either cilostazol or sildenafil.

conclusionsThese results suggest that concurrent treatment with a PDE 3 and/or PDE 5 inhibitor will reduce the anti-inflammatory effectiveness of a PDE 4 inhibitor.

Indexed as

Disease Models, AnimalAdministration, OralAnimalsAnti-Inflammatory AgentsAsthmaBronchoalveolar Lavage FluidCytokinesDrug CombinationsMaleMiceMice, Inbred BALB COvalbuminPhosphodiesterase InhibitorsTreatment OutcomeAnti-Inflammatory AgentsCytokinesDrug CombinationsOvalbuminPhosphodiesterase Inhibitors

Identifiers

PMID15169552
PMCPMC419478

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.