Evidence map›Paper›PMID 10188962›Full record

ArticleBritish journal of pharmacology1999

Deficiency of nitric oxide in polycation-induced airway hyperreactivity.

H Meurs, F E Schuurman, M Duyvendak, J Zaagsma

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In one paragraph

Article in British journal of pharmacology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

13 citing papers in PubMed, 40 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

H MeursDepartment of Molecular Pharmacology, University Centre for Pharmacy, Groningen, The Netherlands.
F E Schuurman
M Duyvendak
J Zaagsma
University of Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Using a perfused guinea-pig tracheal tube preparation, we investigated the role of endogenous nitric oxide (NO) in polycation-induced airway hyperreactivity (AHR) to methacholine. Intraluminal (IL) administration of the NO synthase inhibitor Nomega-nitro-L-arginine methyl ester (L-NAME; 100 microM) caused a 1.8 fold increase in the maximal contractile response (Emax) to IL methacholine compared to control, without an effect on the pEC50 (-log10 EC50). The polycation poly-L-arginine (100 microg ml(-1), IL) similarly enhanced the Emax for methacholine; however, the pEC50 value was also increased, by one log10 unit. L-NAME had no effect on the enhanced methacholine response of poly-L-arginine-treated airways, while the enhanced agonist response was completely normalized by the polyanion heparin (25 u ml(-1), IL). In addition, the effect of L-NAME was fully restored in the poly-L-arginine plus heparin treated airways. The results indicate that, in addition to enhanced epithelial permeability, a deficiency of endogenous NO contributes to polycation-induced AHR. The latter finding may represent a novel mechanism of AHR induced by eosinophil-derived cationic proteins in allergic asthma.

Indexed as

AnimalsBronchial HyperreactivityBronchoconstrictionBronchoconstrictor AgentsEnzyme InhibitorsGuinea PigsHeparinIn Vitro TechniquesMethacholine ChlorideNG-Nitroarginine Methyl EsterNitric OxidePeptidesPolyaminesPolyelectrolytesPolymersSpecific Pathogen-Free OrganismsBronchoconstrictor AgentsEnzyme InhibitorsHeparinMethacholine ChlorideNG-Nitroarginine Methyl EsterNitric OxidePeptidesPolyaminespolyargininePolyelectrolytesPolymers

Identifiers

PMID10188962
PMCPMC1565870
OpenAlexW2138337206

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.