Evidence map›Paper›PMID 22419692›Full record

ArticleAmerican journal of physiology. Renal physiology2012

Addition of endothelial progenitor cells to renal revascularization restores medullary tubular oxygen consumption in swine renal artery stenosis.

Behzad Ebrahimi, Zilun Li, Alfonso Eirin, Xiang-Yang Zhu, Stephen C Textor, Lilach O Lerman

Abstract read
In one paragraph

Article in American journal of physiology. Renal physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Endothelial Progenitor Cells: Disease Markers and Potential Therapy in Kidney Disease.Journal of the American Society of Nephrology : JASN · 2025
    Review
  3. Review
  4. Patterns of cortical oxygenation may predict the response to stenting in subjects with renal artery stenosis: A radiomics-based model.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2024
    Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Novel therapeutic strategies for renovascular disease.Current opinion in nephrology and hypertension · 2019
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Atherosclerotic renal artery stenosis: current status.Advances in chronic kidney disease · 2015
    Review
  15. Review
  16. Review
  17. Article
  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

6 authors at 2 institutions in 2 countries.

Behzad EbrahimiDivision of Nephrology and Hypertension, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA.
Zilun Li
Alfonso Eirin
Xiang-Yang Zhu
Stephen C Textor
Lilach O Lerman
Mayo Clinic · USThe First Affiliated Hospital, Sun Yat-sen University · CN

Funding

Tissue Oxygenation in Human Renovascular HypertensionP01HL085307 · NHLBI · MAYO CLINIC ROCHESTER · PI LERMAN, LILACH O · 2007 to 2011
$10.4M
CT imaging for the assessment of kidney injury distal to renal artery stenosisR01DK073608 · NIDDK · MAYO CLINIC ROCHESTER · PI LERMAN, LILACH O · 2006 to 2015
$3.1M
CT Evaluation of the Myocardial Effects of Risk FactorsR01HL077131 · NHLBI · MAYO CLINIC ROCHESTER · PI LERMAN, LILACH O · 2004 to 2013
$2.8M
EXTRAMURAL RES FACIL IMPROVEMENT PROG: POLYCYSTIC KIDNEY DISEASE, RENAL STUDIES,C06RR018898 · NCRR · MAYO CLINIC · PI BURNETT, JOHN C · 2004 to 2004
$2.3M
Autologous Progenitor Cells Delivery in Renovascular DiseaseR21DK077013 · NIDDK · MAYO CLINIC ROCHESTER · PI LERMAN, LILACH O · 2008 to 2009
$416k
NCRR NIH HHS C06 RR018898NCRR NIH HHS C06-RR018898NHLBI NIH HHS HL085307NHLBI NIH HHS HL77131NHLBI NIH HHS P01 HL085307NHLBI NIH HHS R01 HL077131NIDDK NIH HHS DK73608NIDDK NIH HHS DK77013NIDDK NIH HHS R01 DK073608NIDDK NIH HHS R21 DK077013
6 · The paper itself

Abstract

Renal artery stenosis (RAS) promotes microvascular rarefaction and fibrogenesis, which may eventuate in irreversible kidney injury. We have shown that percutaneous transluminal renal angioplasty (PTRA) or endothelial progenitor cells (EPC) improve renal cortical hemodynamics and function in the poststenotic kidney. The renal medulla is particularly sensitive to hypoxia, yet little is known about reversibility of medullary injury on restoration of renal blood flow. This study was designed to test the hypothesis that PTRA, with or without adjunct EPC delivery to the stenotic kidney, may improve medullary remodeling and tubular function. RAS was induced in 21 pigs using implantation of irritant coils, while another group served as normal controls (n = 7 each). Two RAS groups were then treated 6 wk later with PTRA or both PTRA and EPC. Four weeks later, medullary hemodynamics, microvascular architecture, and oxygen-dependent tubular function of the stenotic kidneys were examined using multidetector computed tomography, microcomputed tomography, and blood oxygenation level-dependent MRI, respectively. Medullary protein expression of vascular endothelial growth factor, endothelial nitric oxide synthase, hypoxia-inducible factor-1α, and NAD(P)H oxidase p47 were determined. All RAS groups showed decreased medullary vascular density and blood flow. However, in RAS+PTRA+EPC animals, EPC were engrafted in tubular structures, oxygen-dependent tubular function was normalized, and fibrosis attenuated, despite elevated expression of hypoxia-inducible factor-1α and sustained downregulation of vascular endothelial growth factor. In conclusion, EPC delivery, in addition to PTRA, restores medullary oxygen-dependent tubular function, despite impaired medullary blood and oxygen supply. These results support further development of cell-based therapy as an adjunct to revascularization of RAS.

Indexed as

Hematopoietic Stem Cell TransplantationAnimalsBlood VolumeEndothelial CellsFemaleFibrosisHypoxia-Inducible Factor 1, alpha SubunitImage Processing, Computer-AssistedKidneyKidney MedullaKidney TubulesMagnetic Resonance ImagingMicrovesselsOxygenOxygen ConsumptionProteinuriaHypoxia-Inducible Factor 1, alpha SubunitOxygenVascular Endothelial Growth Factor A

Identifiers

PMID22419692
PMCPMC3378175
OpenAlexW2000294090

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.