Evidence map›Paper›PMID 26108066›Full record

ArticleKidney international2015

Inhibition of the purinergic P2X7 receptor improves renal perfusion in angiotensin-II-infused rats.

Robert I Menzies, Amelia R Howarth, Robert J Unwin, Frederick W K Tam, John J Mullins, Matthew A Bailey

Open access · bronzeAbstract read
In one paragraph

Article in Kidney international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
4.2field-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

38 citing papers in PubMed, 62 citations in OpenAlex.

  1. Inhibition of (interstitial) P2YPflugers Archiv : European journal of physiology · 2026
    Article
  2. Inhibition of (interstitial) P2YResearch square · 2026
    Article
  3. Inhibition of (interstitial) P2YbioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Review
  6. Resident T Cells and Intrarenal Inflammation.Journal of the American Society of Nephrology : JASN · 2025
    Article
  7. Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Diabetes and hypertension: Pivotal involvement of purinergic signaling.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2021
    Review
  18. Uncovering the Protective Mechanism of the Volatile Oil ofEvidence-based complementary and alternative medicine : eCAM · 2021
    Article
  19. P2X7 Receptors: An Untapped Target for the Management of Cardiovascular Disease.Arteriosclerosis, thrombosis, and vascular biology · 2021
    Review
  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

6 authors at 5 institutions in 2 countries.

Robert I MenziesUniversity/British Heart Foundation Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Amelia R HowarthUniversity/British Heart Foundation Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Robert J UnwinCardiovascular and Metabolic Diseases (iMed CVMD) R&D, AstraZeneca, Mölndal, Sweden.
Frederick W K TamImperial College Renal and Transplant Centre, Department of Medicine, Imperial College London, London, UK.
John J MullinsUniversity/British Heart Foundation Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
Matthew A BaileyUniversity/British Heart Foundation Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK.
British Heart Foundation · GBAstraZeneca (Sweden) · SEImperial College London · GBMRC Institute of Genetics and Molecular Medicine · GBUniversity of Edinburgh · GB

Funding

British Heart Foundation FS/13/52/30637British Heart Foundation RE/08/001British Heart Foundation RE/13/3/30183
6 · The paper itself

Abstract

Chronic activation of the renin-angiotensin system promotes hypertension, renal microvascular dysfunction, tissue hypoxia, and inflammation. Despite similar hypertension, an injurious response to excess angiotensin II is greater in F344 than in Lewis rats; the latter displaying renoprotection. Here we studied whether p2rx7, encoding the P2X7 receptor (P2X7R), is a candidate gene for the differential susceptibility to vascular dysfunction under high angiotensin II tone. A 14-day infusion of angiotensin II into F344 rats increased blood pressure by about 15 mm Hg without inducing fibrosis or albuminuria. In vivo pressure natriuresis was suppressed, medullary perfusion reduced by half, and the corticomedullary oxygenation gradient disrupted. Selective P2X7R antagonism restored pressure natriuresis, promoting a significant leftward shift in the intercept and increasing the slope. Sodium excretion was increased sixfold and blood pressure normalized. The specific P2X7R antagonist AZ11657312 increased renal medullary perfusion, but only in angiotensin II-treated rats. Tissue oxygenation was improved by P2X7R blockade, particularly in poorly oxygenated regions of the kidney. Thus, activation of P2X7R induces microvascular dysfunction and regional hypoxia when angiotensin II is elevated and these effects may contribute to progression of renal injury induced by chronic angiotensin II.

Indexed as

Angiotensin IIAnimalsBlood PressureEndothelium, VascularGene ExpressionKidney CortexKidney MedullaMaleNatriuresisNitric OxideOxygenPurinergic P2X Receptor AntagonistsRatsRats, Inbred F344Receptors, Purinergic P2X7Renal CirculationAngiotensin IINitric OxideOxygenPurinergic P2X Receptor AntagonistsReceptors, Purinergic P2X7RNA, MessengerVasoconstrictor Agents

Identifiers

PMID26108066
PMCPMC4826596
OpenAlexW1558140044

What OpenQuestion holds

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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.