Evidence map›Paper›PMID 23658641›Full record

ArticlePloS one2013

Male-female differences in upregulation of vasoconstrictor responses in human cerebral arteries.

Hilda Ahnstedt, Lei Cao, Diana N Krause, Karin Warfvinge, Hans Säveland, Ola G Nilsson, Lars Edvinsson

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 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
0.7field-weighted citation impact, top 24% 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

24 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Sex-Specific MicroRNAs in Neurovascular Units in Ischemic Stroke.International journal of molecular sciences · 2021
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Sex differences in the structure and function of rat middle cerebral arteries.American journal of physiology. Heart and circulatory physiology · 2020
    Article
  15. Perivascular neurotransmitters: Regulation of cerebral blood flow and role in primary headaches.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    Review
  16. Article
  17. Brain Vasculature and Cognition.Arteriosclerosis, thrombosis, and vascular biology · 2019
    Review
  18. Article
  19. Article
  20. Review
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 2 institutions in 2 countries.

Hilda AhnstedtDivision of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden. hilda.ahnstedt@med.lu.se
Lei Cao
Diana N Krause
Karin Warfvinge
Hans Säveland
Ola G Nilsson
Lars Edvinsson
Lund University · SEUniversity of California, Irvine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeMale-female differences may significantly impact stroke prevention and treatment in men and women, however underlying mechanisms for sexual dimorphism in stroke are not understood. We previously found in males that cerebral ischemia upregulates contractile receptors in cerebral arteries, which is associated with lower blood flow. The present study investigates if cerebral arteries from men and women differ in cerebrovascular receptor upregulation. EXPERIMENTAL APPROACH: Freshly obtained human cerebral arteries were placed in organ culture, an established model for studying receptor upregulation. 5-hydroxtryptamine type 1B (5-HT1B), angiotensin II type 1 (AT1) and endothelin-1 type A and B (ETA and ETB) receptors were evaluated using wire myograph for contractile responses, real-time PCR for mRNA and immunohistochemistry for receptor expression. KEY

resultsVascular sensitivity to angiotensin II and endothelin-1 was markedly lower in cultured cerebral arteries from women as compared to men. ETB receptor-mediated contraction occurred in male but not female arteries. Interestingly, there were similar upregulation in mRNA and expression of 5-HT1B, AT1, and ETB receptors and in local expression of Ang II after organ culture. CONCLUSIONS AND IMPLICATIONS: In spite of receptor upregulation after organ culture in both sexes, cerebral arteries from women were significantly less responsive to vasoconstrictors angiotensin II and endothelin-1 as compared to arteries from men. This suggests receptor coupling and/or signal transduction mechanisms involved in cerebrovascular contractility may be suppressed in females. This is the first study to demonstrate sex differences in the vascular function of human brain arteries.

Indexed as

Angiotensin IICerebral ArteriesEndothelin-1FemaleGene ExpressionHumansMaleMiddle AgedMyographyOrgan Culture TechniquesProtein IsoformsReceptor, Angiotensin, Type 1Receptor, Endothelin AReceptor, Serotonin, 5-HT1BRNA, MessengerSex FactorsAngiotensin IIEndothelin-1Protein IsoformsReceptor, Angiotensin, Type 1Receptor, Endothelin AReceptor, Serotonin, 5-HT1BRNA, Messenger

Identifiers

PMID23658641
PMCPMC3639206
OpenAlexW2092504389

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.