Evidence map›Paper›PMID 22833057›Full record

ArticleNephron. Physiology2012

An intact kidney slice model to investigate vasa recta properties and function in situ.

C Crawford, T Kennedy-Lydon, C Sprott, T Desai, L Sawbridge, J Munday, R J Unwin, S S P Wildman, C M Peppiatt-Wildman

Open access · hybridAbstract read
In one paragraph

Article in Nephron. Physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
5.0field-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

31 citing papers in PubMed, 56 citations in OpenAlex.

  1. The kidney stroma in development and disease.Nature reviews. Nephrology · 2025
    Review
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  16. σ1-Receptor Agonism Protects against Renal Ischemia-Reperfusion Injury.Journal of the American Society of Nephrology : JASN · 2017
    Article
  17. Article
  18. Intravital and Kidney Slice Imaging of Podocyte Membrane Dynamics.Journal of the American Society of Nephrology : JASN · 2016
    Article
  19. Article
  20. High salt induces autocrine actions of ET-1 on inner medullary collecting duct NO production via upregulated ETB receptor expression.American journal of physiology. Regulatory, integrative and comparative physiology · 2016
    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 1 country.

C CrawfordMedway School of Pharmacy, The Universities of Kent and Greenwich at Medway, Chatham, UK.
T Kennedy-Lydon
C Sprott
T Desai
L Sawbridge
J Munday
R J Unwin
S S P Wildman
C M Peppiatt-Wildman
Royal Veterinary College · GBMedway School of Pharmacy · GBThe Royal Free Hospital · GB

Funding

Medical Research Council G0700206Wellcome Trust
6 · The paper itself

Abstract

backgroundMedullary blood flow is via vasa recta capillaries, which possess contractile pericytes. In vitro studies using isolated descending vasa recta show that pericytes can constrict/dilate descending vasa recta when vasoactive substances are present. We describe a live kidney slice model in which pericyte-mediated vasa recta constriction/dilation can be visualized in situ.

methodsConfocal microscopy was used to image calcein, propidium iodide and Hoechst labelling in 'live' kidney slices, to determine tubular and vascular cell viability and morphology. DIC video-imaging of live kidney slices was employed to investigate pericyte-mediated real-time changes in vasa recta diameter.

resultsPericytes were identified on vasa recta and their morphology and density were characterized in the medulla. Pericyte-mediated changes in vasa recta diameter (10-30%) were evoked in response to bath application of vasoactive agents (norepinephrine, endothelin-1, angiotensin-II and prostaglandin E(2)) or by manipulating endogenous vasoactive signalling pathways (using tyramine, L-NAME, a cyclo-oxygenase (COX-1) inhibitor indomethacin, and ATP release).

conclusionsThe live kidney slice model is a valid complementary technique for investigating vasa recta function in situ and the role of pericytes as regulators of vasa recta diameter. This technique may also be useful in exploring the role of tubulovascular crosstalk in regulation of medullary blood flow.

Indexed as

Adenosine TriphosphateAngiotensin IIAnimalsAntigensCapillariesCell SurvivalChondroitin Sulfate Proteoglycan 4Endothelin-1Enzyme InhibitorsImmunohistochemistryIndomethacinIn Vitro TechniquesKidney MedullaMaleMicroscopy, ConfocalNG-Nitroarginine Methyl EsterAdenosine TriphosphateAngiotensin IIAntigensChondroitin Sulfate Proteoglycan 4Endothelin-1Enzyme InhibitorsIndomethacinNG-Nitroarginine Methyl EsterNorepinephrineProteoglycansVasoconstrictor Agents

Identifiers

PMID22833057
PMCPMC5166522
OpenAlexW2049338620

What OpenQuestion holds

Textmetadata
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.