Evidence map›Paper›PMID 20172962›Full record

ArticleMolecular endocrinology (Baltimore, Md.)2010

Dehydroepiandrosterone sulfate directly activates protein kinase C-beta to increase human neutrophil superoxide generation.

David J Radford, Keqing Wang, Joanne C McNelis, Angela E Taylor, Georg Hechenberger, Johann Hofmann, Hema Chahal, Wiebke Arlt, Janet M Lord

Open access · bronzeAbstract read
In one paragraph

Article in Molecular endocrinology (Baltimore, Md.), 2010. 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
4.4field-weighted citation impact, top 5% 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, 69 citations in OpenAlex.

  1. Trial
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  7. Observational
  8. Estradiol Metabolism: Crossroads in Pulmonary Arterial Hypertension.International journal of molecular sciences · 2019
    Review
  9. Review
  10. Review
  11. Immunological aspects of age-related diseases.World journal of biological chemistry · 2017
    Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Age-dependent dysregulation of innate immunity.Nature reviews. Immunology · 2013
    Review
  18. Article
  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

9 authors at 3 institutions in 2 countries.

David J RadfordMedical Research Council Centre for Immune Regulation, School of Immunity & Infection, University of Birmingham, Birmingham, United Kingdom.
Keqing Wang
Joanne C McNelis
Angela E Taylor
Georg Hechenberger
Johann Hofmann
Hema Chahal
Wiebke Arlt
Janet M Lord
Medical Research Council · GBUniversity of Birmingham · GBInnsbruck Medical University · AT

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council 0900567Medical Research Council G0801473Medical Research Council G116/172
6 · The paper itself

Abstract

Dehydroepiandrosterone sulfate (DHEAS) is the most abundant steroid in the human circulation and is secreted by the adrenals in an age-dependent fashion, with maximum levels during the third decade and very low levels in old age. DHEAS is considered an inactive metabolite, whereas cleavage of the sulfate group generates dehydroepiandrosterone (DHEA), a crucial sex steroid precursor. However, here we show that DHEAS, but not DHEA, increases superoxide generation in primed human neutrophils in a dose-dependent fashion, thereby impacting on a key bactericidal mechanism. This effect was not prevented by coincubation with androgen and estrogen receptor antagonists but was reversed by the protein kinase C inhibitor Bisindolylmaleimide 1. Moreover, we found that neutrophils are unique among leukocytes in expressing an organic anion-transporting polypeptide D, able to mediate active DHEAS influx transport whereas they did not express steroid sulfatase that activates DHEAS to DHEA. A specific receptor for DHEAS has not yet been identified, but we show that DHEAS directly activated recombinant protein kinase C-beta (PKC-beta) in a cell-free assay. Enhanced PKC-beta activation by DHEAS resulted in increased phosphorylation of p47(phox), a crucial component of the active reduced nicotinamide adenine dinucleotide phosphate complex responsible for neutrophil superoxide generation. Our results demonstrate that PKC-beta acts as an intracellular receptor for DHEAS in human neutrophils, a signaling mechanism entirely distinct from the role of DHEA as sex steroid precursor and with important implications for immunesenescence, which includes reduced neutrophil superoxide generation in response to pathogens.

Indexed as

Cells, CulturedDehydroepiandrosterone SulfateHumansIndolesMaleMaleimidesNADPH OxidasesNeutrophilsOrganic Anion TransportersPhosphorylationPolymerase Chain ReactionProtein Kinase CProtein Kinase C betaSuperoxidesbisindolylmaleimide IDehydroepiandrosterone SulfateIndolesMaleimidesNADPH Oxidasesneutrophil cytosolic factor 1Organic Anion TransportersProtein Kinase CProtein Kinase C betaSuperoxides

Identifiers

PMID20172962
PMCPMC5417533
OpenAlexW2168472005

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.