Evidence map›Paper›PMID 19068077›Full record

ArticleBritish journal of pharmacology2009

Montelukast inhibits neutrophil pro-inflammatory activity by a cyclic AMP-dependent mechanism.

Ronald Anderson, Annette J Theron, Cornelia M Gravett, Helen C Steel, Gregory R Tintinger, Charles Feldman

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 84 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Neutrophils in Atopic Dermatitis.Clinical reviews in allergy & immunology · 2024
    Review
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  12. The pulmonary route as a way to drug repositioning in COVID-19 therapy.Journal of drug delivery science and technology · 2021
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Is there any effect of montelukast on prevention of myringosclerosis after myringotomy in a rat model?European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2019
    Article
  18. The complex pathophysiology of allergic rhinitis: scientific rationale for the development of an alternative treatment option.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2019
    Review
  19. Article
  20. Article
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

6 authors at 3 institutions in 1 country.

Ronald AndersonMedical Research Council Unit for Inflammation and Immunity, Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa. ronald.anderson@up.ac.za
Annette J Theron
Cornelia M Gravett
Helen C Steel
Gregory R Tintinger
Charles Feldman
National Health Laboratory Service · ZAUniversity of Pretoria · ZAUniversity of the Witwatersrand · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe objective of this study was to characterize the effects of the cysteinyl leukotriene receptor antagonist, montelukast (0.1-2 micromol x L(-1)), on Ca(2+)-dependent pro-inflammatory activities, cytosolic Ca(2+) fluxes and intracellular cAMP in isolated human neutrophils activated with the chemoattractants, N-formyl-L-methionyl-L-leucyl-L-phenylalanine (1 micromol x L(-1)) and platelet-activating factor (200 nmol x L(-1)). EXPERIMENTAL APPROACH: Generation of reactive oxygen species was measured by lucigenin- and luminol-enhanced chemiluminescence, elastase release by a colourimetric assay, leukotriene B(4) and cAMP by competitive binding ELISA procedures, and Ca(2+) fluxes by fura-2/AM-based spectrofluorimetric and radiometric ((45)Ca(2+)) procedures. KEY

resultsPre-incubation of neutrophils with montelukast resulted in dose-related inhibition of the generation of reactive oxygen species and leukotriene B(4) by chemoattractant-activated neutrophils, as well as release of elastase, all of which were maximal at 2 micromol x L(-1) (mean percentages of the control values of 30 +/- 1, 12 +/- 3 and 21 +/- 3 respectively; P < 0.05). From a mechanistic perspective, treatment of chemoattractant-activated neutrophils with montelukast resulted in significant reductions in both post-peak cytosolic Ca(2+) concentrations and store-operated Ca(2+) influx. These montelukast-mediated alterations in Ca(2+) handling by the cells were associated with a significant elevation in basal cAMP levels, which resulted from inhibition of cyclic nucleotide phosphodiesterases. CONCLUSIONS AND IMPLICATIONS: Montelukast, primarily a cysteinyl leukotriene (CysLT(1)) receptor antagonist, exhibited previously undocumented, secondary, neutrophil-directed anti-inflammatory properties, which appeared to be cAMP-dependent.

Indexed as

3',5'-Cyclic-AMP PhosphodiesterasesAcetatesCalciumChemotactic FactorsCyclic AMPCyclopropanesDose-Response Relationship, DrugFluorescent DyesFura-2HumansIn Vitro TechniquesLeukotriene AntagonistsLeukotriene B4Neutrophil ActivationNeutrophilsN-Formylmethionine Leucyl-Phenylalanine3',5'-Cyclic-AMP PhosphodiesterasesAcetatesCalciumChemotactic FactorsCyclic AMPCyclopropanesFluorescent DyesFura-2Leukotriene AntagonistsLeukotriene B4leukotriene D4 receptormontelukastN-Formylmethionine Leucyl-PhenylalaninePancreatic ElastaseQuinolinesReactive Oxygen SpeciesReceptors, LeukotrieneSulfides

Identifiers

PMID19068077
PMCPMC2697768
OpenAlexW2082254969

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.