Evidence map›Paper›PMID 21883146›Full record

ArticleBritish journal of pharmacology2012

Slow receptor dissociation is not a key factor in the duration of action of inhaled long-acting β2-adrenoceptor agonists.

David A Sykes, Steven J Charlton

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

23 citing papers in PubMed, 75 citations in OpenAlex.

  1. Article
  2. Agonist efficacy at the βFrontiers in pharmacology · 2025
    Article
  3. Article
  4. Review
  5. Kinetic analysis of endogenous βBritish journal of pharmacology · 2023
    Article
  6. Article
  7. Exploring the kinetic selectivity of drugs targeting the βPharmacology research & perspectives · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Binding kinetics of ligands acting at GPCRs.Molecular and cellular endocrinology · 2019
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. The acute management of asthma.Clinical reviews in allergy & immunology · 2015
    Review
  18. 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

2 authors at 1 institution in 1 country.

David A SykesNovartis Institutes for Biomedical Research, West Sussex, UK.
Steven J Charlton
Novartis (United Kingdom) · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeβ(2) -Adrenoceptor agonists are important bronchodilators used for the treatment of chronic obstructive pulmonary disease and asthma. Clinical data on β(2) -adrenoceptor agonists show a range of onset and duration of action. We have investigated whether the receptor binding kinetics of β(2) -adrenoceptor agonists can explain their observed onset of action and duration of effect in the clinic. EXPERIMENTAL APPROACH: [(3) H]-DHA was used to label β(2) -adrenoceptors expressed in CHO-cell membranes (K(d) of 0.084 nM). Competition kinetic experiments were performed in the presence of unlabelled β(2) agonists at 37°C in HBSS containing GTP. To determine the kinetic parameters, three concentrations (10, 3 and 1 ×K(i) ) of the unlabelled compound were employed against a fixed concentration of [(3) H]-DHA (0.6 nM). KEY

resultsThe clinically used β(2) -adrenoceptor agonists exhibited a range of association and dissociation rates. The kinetic K(d) and the competition K(i) values of the eight β(2) -adrenoceptor agonists examined were strongly correlated, suggesting that the method had produced accurate k(off) and k(on) rates. The kinetic on-rate was highly correlated with equilibrium binding affinity. CONCLUSIONS AND IMPLICATIONS: Although the β(2) -adrenoceptor agonists displayed a range of kinetic rate parameters, simulations at relevant drug concentrations suggest that receptor kinetics do not play an important role in determining onset of action in the clinic. In addition, it is unlikely that receptor kinetics exert an important influence on the duration of action of these agonists, as indacaterol (once daily dosing) had a shorter residency time at the receptor than salmeterol (twice daily dosing).

Indexed as

Administration, InhalationAdrenergic beta-2 Receptor AgonistsAdrenergic beta-AntagonistsAnimalsBinding, CompetitiveCell MembraneCHO CellsCricetinaeCricetulusDihydroalprenololHumansIodocyanopindololKineticsRadioligand AssayReceptors, Adrenergic, beta-21-(4,6-propyl)dihydroalprenololAdrenergic beta-2 Receptor AgonistsAdrenergic beta-AntagonistsDihydroalprenololIodocyanopindololReceptors, Adrenergic, beta-2

Identifiers

PMID21883146
PMCPMC3423252
OpenAlexW1487006512

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.