Evidence map›Paper›PMID 21486789›Full record

ArticleThe Journal of physiology2011

Dehydroepiandrosterone protects against oxidative stress-induced endothelial dysfunction in ovariectomized rats.

João Paulo Gabriel Camporez, Eliana Hiromi Akamine, Ana Paula Davel, Celso Rodrigues Franci, Luciana Venturini Rossoni, Carla Roberta de Oliveira Carvalho

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
6.6field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 80 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Cerebral arteriolar and neurovascular dysfunction after chemically induced menopause in mice.American journal of physiology. Heart and circulatory physiology · 2022
    Article
  8. Article
  9. Steroidogenic cytochrome P450 17A1 structure and function.Molecular and cellular endocrinology · 2021
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Dehydroepiandrosterone Prevents HOxidative medicine and cellular longevity · 2019
    Article
  16. Article
  17. Article
  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

6 authors at 1 institution in 1 country.

João Paulo Gabriel CamporezDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of S˜ao Paulo, SP, Brazil.
Eliana Hiromi Akamine
Ana Paula Davel
Celso Rodrigues Franci
Luciana Venturini Rossoni
Carla Roberta de Oliveira Carvalho
Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cardiovascular disease is less frequent in premenopausal women than in age-matched men or postmenopausal women. Moreover, the marked age-related decline in serum dehydroepiandrosterone (DHEA) level has been associated to cardiovascular disease. The aim of this study was to evaluate the effects of DHEA treatment on vascular function in ovariectomized rats. At 8 weeks of age, female Wistar rats were ovariectomized (OVX) or sham (SHAM) operated and 8 weeks after surgery both groups were treated with vehicle or DHEA (10mg kg⁻¹ week⁻¹) for 3 weeks. Aortic rings were used to evaluate the vasoconstrictor response to phenylephrine (PHE) and the relaxation responses to acetylcholine (ACh) and sodium nitroprusside (SNP). Tissue reactive oxygen species (ROS) production and SOD, NADPH oxidase and eNOS protein expression were analysed. PHE-induced contraction was increased in aortic rings from OVX compared to SHAM, associated with a reduction in NO bioavailability. Furthermore, the relaxation induced by ACh was reduced in arteries from OVX, while SNP relaxation did not change. The incubation of aortic rings with SOD or apocynin restored the enhanced PHE-contraction and the impaired ACh-relaxation only in OVX. DHEA treatment corrected the increased PHE contraction and the impaired ACh-induced relaxation observed in OVX by an increment in NO bioavailability and decrease in ROS production. Besides, DHEA treatment restores the reduced Cu/Zn-SOD protein expression and eNOS phosphorylation and the increased NADPH oxidase protein expression in the aorta of OVX rats. The present results suggest an important action of DHEA, improving endothelial function in OVX rats by acting as an antioxidant and enhancing the NO bioavailability.

Indexed as

AcetophenonesAcetylcholineAnimalsAorta, ThoracicCardiovascular AgentsDehydroepiandrosteroneEndothelium, VascularFemaleNADPH OxidasesNitric OxideNitric Oxide Synthase Type IIINitroprussideOvariectomyOxidative StressPhenylephrineRatsAcetophenonesacetovanilloneAcetylcholineCardiovascular AgentsDehydroepiandrosteroneNADPH OxidasesNitric OxideNitric Oxide Synthase Type IIINitroprussidePhenylephrineReactive Oxygen SpeciesSuperoxide Dismutase

Identifiers

PMID21486789
PMCPMC3115827
OpenAlexW1770463409

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.