Evidence map›Paper›PMID 23741338›Full record

ArticlePloS one2013

Dissociations in the effects of β2-adrenergic receptor agonists on cAMP formation and superoxide production in human neutrophils: support for the concept of functional selectivity.

Irena Brunskole Hummel, Michael T Reinartz, Solveig Kälble, Heike Burhenne, Frank Schwede, Armin Buschauer, Roland Seifert

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. The role of βBrain, behavior, & immunity - health · 2021
    Article
  8. Article
  9. Review
  10. The Effect of βFrontiers in immunology · 2020
    Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Recruitment of β-arrestin 1 and 2 to the β2-adrenoceptor: analysis of 65 ligands.The Journal of pharmacology and experimental therapeutics · 2015
    Article
  16. Article
  17. Adrenergic modulation of migration, CD11b and CD18 expression, ROS and interleukin-8 production by human polymorphonuclear leukocytes.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2015
    Article
  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

7 authors at 3 institutions in 1 country.

Irena Brunskole HummelInstitute of Pharmacology, Medical School of Hannover, Hannover, Germany.
Michael T Reinartz
Solveig Kälble
Heike Burhenne
Frank Schwede
Armin Buschauer
Roland Seifert
Medizinische Hochschule Hannover · DEUniversity of Regensburg · DEBiolog Life Science Institute · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In neutrophils, activation of the β2-adrenergic receptor (β2AR), a Gs-coupled receptor, inhibits inflammatory responses, which could be therapeutically exploited. The aim of this study was to evaluate the effects of various β2AR ligands on adenosine-3',5'-cyclic monophosphate (cAMP) accumulation and N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLP)-induced superoxide anion (O2(•-)) production in human neutrophils and to probe the concept of ligand-specific receptor conformations (also referred to as functional selectivity or biased signaling) in a native cell system. This is an important question because so far, evidence for functional selectivity has been predominantly obtained with recombinant systems, due to the inherent difficulties to genetically manipulate human native cells. cAMP concentration was determined by HPLC/tandem mass spectrometry, and O2(•-) formation was assessed by superoxide dismutase-inhibitable reduction of ferricytochrome c. β2AR agonists were generally more potent in inhibiting fMLP-induced O2(•-) production than in stimulating cAMP accumulation. (-)-Ephedrine and dichloroisoproterenol were devoid of any agonistic activity in the cAMP assay, but partially inhibited fMLP-induced O2(•-) production. Moreover, (-)-adrenaline was equi-efficacious in both assays whereas the efficacy of salbutamol was more than two-fold higher in the O2(•-) assay. Functional selectivity was visualized by deviations of ligand potencies and efficacies from linear correlations for various parameters. We obtained no evidence for involvement of protein kinase A in the inhibition of fMLP-induced O2(•-) production after β2AR-stimulation although cAMP-increasing substances inhibited O2(•-) production. Taken together, our data corroborate the concept of ligand-specific receptor conformations with unique signaling capabilities in native human cells and suggest that the β2AR inhibits O2(•-) production in a cAMP-independent manner.

Indexed as

Adrenergic AgonistsAlbuterolCyclic AMPCyclic AMP-Dependent Protein KinasesEphedrineEpinephrineFemaleHumansIsoproterenolKineticsMaleNeutrophilsN-Formylmethionine Leucyl-PhenylalaninePrimary Cell CultureProtein ConformationReceptors, Adrenergic, beta-2Adrenergic AgonistsAlbuterolCyclic AMPCyclic AMP-Dependent Protein KinasesdichloroisoproterenolEphedrineEpinephrineIsoproterenolN-Formylmethionine Leucyl-PhenylalanineReceptors, Adrenergic, beta-2Superoxides

Identifiers

PMID23741338
PMCPMC3669315
OpenAlexW2169955614

What OpenQuestion holds

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LicenceCC BY
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.