Evidence map›Paper›PMID 29758129›Full record

ArticleAmerican journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons2019

Twenty-four-hour normothermic perfusion of discarded human kidneys with urine recirculation.

Annemarie Weissenbacher, Letizia Lo Faro, Olga Boubriak, Maria F Soares, Ian S Roberts, James P Hunter, Daniel Voyce, Nikolay Mikov, Andrew Cook, Rutger J Ploeg and 2 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 69 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 2 pooled it
10.9field-weighted citation impact, top 1% 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

69 citing papers in PubMed, 2 syntheses or guidelines pooled it, 129 citations in OpenAlex.

  1. Kidney protection during surgery on the thoracoabdominal aorta: a systematic review.Interdisciplinary cardiovascular and thoracic surgery · 2025
    Pooled it
  2. Perfusate Composition and Duration ofTransplant international : official journal of the European Society for Organ Transplantation · 2022
    Pooled it
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Time as a Therapeutic Ally: The Promise of Long-Term Solid Organ and Tissue Perfusion.Transplant international : official journal of the European Society for Organ Transplantation · 2026
    Review
  10. Revealing the potential of non-transplanted donor organs: a comparative analysis in the Eurotransplant region.Transplant international : official journal of the European Society for Organ Transplantation · 2026
    Article
  11. Advancements inFrontiers in transplantation · 2026
    Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Enhanced Kidney Targeting and Distribution of Tubuloids During Normothermic Perfusion.Transplant international : official journal of the European Society for Organ Transplantation · 2025
    Article
  20. Article

9 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 1 country.

Annemarie WeissenbacherOxford Transplant Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
Letizia Lo FaroOxford Transplant Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
Olga BoubriakInstitute of Biomedical Engineering, University of Oxford, Oxford, UK.
Maria F SoaresDepartment of Cellular Pathology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK.
Ian S RobertsDepartment of Cellular Pathology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK.
James P HunterOxford Transplant Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
Daniel VoyceOrganOx Limited, Oxford Science Park, Oxford, UK.
Nikolay MikovOrganOx Limited, Oxford Science Park, Oxford, UK.
Andrew CookOrganOx Limited, Oxford Science Park, Oxford, UK.
Rutger J PloegOxford Transplant Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
Constantin C CoussiosInstitute of Biomedical Engineering, University of Oxford, Oxford, UK.
Peter J FriendOxford Transplant Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
University of Oxford · GBOrganOx (United Kingdom) · GBJohn Radcliffe Hospital · GBNuffield Orthopaedic Centre · GB

Funding

Department of Health II-ES-1010-10096Department of Health NIHR200022Engineering and Physical Sciences Research CouncilOxford Centre for Drug Delivery Devices (OxCD3) EP/L024012/1UK's National Institute for Health Research II-ES-1010-10096
6 · The paper itself

Abstract

Transportable normothermic kidney perfusion for 24 hours or longer could enable viability assessment of marginal grafts, increased organ use, and improved transplant logistics. Eleven clinically declined kidneys were perfused normothermically, with 6 being from donors after brain death (median cold ischemia time 33 ± 36.9 hours) and 5 being from donors after circulatory death (36.2 ± 38.3 hours). Three kidneys were perfused using Ringer's lactate to replace excreted urine volume, and 8 kidneys were perfused using urine recirculation to maintain perfusate volume without fluid replenishment. In all cases, normothermic perfusion either maintained or slightly improved the histopathologically assessed tubular condition, and there was effective urine production in kidneys from both donors after brain death and donors after circulatory death (2367 ± 1798 mL vs 744.4 ± 198.4 mL, respectively; P = .44). Biomarkers, neutrophil gelatinase-associated lipocalin, and kidney injury molecule-1 were successfully detected and quantified in the perfusate. All kidneys with urine recirculation were readily perfused for 24 hours (n = 8) and exhibited physiological perfusate sodium levels (140.7 ± 1.2 mmol/L), while kidneys without urine recirculation (n = 3) achieved a reduced normothermic perfusion time of 7.7 ± 1.5 hours and significantly higher perfusate sodium levels (159.6 ± 4.63 mmol/:, P < .01). Normothermic machine perfusion of human kidneys for 24 hours appears to be feasible, and urine recirculation was found to facilitate the maintenance of perfusate volume and homeostasis.

Indexed as

PerfusionUrineAgedBiomarkersCold IschemiaFemaleGlucoseHemodynamicsHumansKidneyKidney TransplantationLactic AcidLipocalin-2MaleMiddle AgedOrgan PreservationBiomarkersGlucoseLactic AcidLCN2 protein, humanLipocalin-2clinical research/practicekidney (native) function/dysfunctionkidney transplantation/nephrologyorgan perfusion and preservationtranslational research/science

Identifiers

PMID29758129
PMCPMC6491986
OpenAlexW2803685415

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.