Evidence map›Paper›PMID 23073466›Full record

ArticleTransplantation2012

In vivo hypoxic preconditioning protects from warm liver ischemia-reperfusion injury through the adenosine A2B receptor.

Alexander Choukèr, Akio Ohta, André Martignoni, Dmitriy Lukashev, Lefteris C Zacharia, Edwin K Jackson, Jürgen Schnermann, Jerrold M Ward, Ines Kaufmann, Brenda Klaunberg and 2 more

Abstract read
In one paragraph

Article in Transplantation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed, 48 citations in OpenAlex.

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  12. Hypoxia-inducible factors as molecular targets for liver diseases.Journal of molecular medicine (Berlin, Germany) · 2016
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  19. Biological implications of extracellular adenosine in hepatic ischemia and reperfusion injury.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2013
    Review
  20. Signaling through hepatocellular A2B adenosine receptors dampens ischemia and reperfusion injury of the liver.Proceedings of the National Academy of Sciences of the United States of America · 2013
    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

12 authors at 6 institutions in 2 countries.

Alexander ChoukèrDepartment of Anesthesiology, University of Munich, Munich, Germany. achouker@med.uni-muenchen.de
Akio Ohta
André Martignoni
Dmitriy Lukashev
Lefteris C Zacharia
Edwin K Jackson
Jürgen Schnermann
Jerrold M Ward
Ines Kaufmann
Brenda Klaunberg
Michail V Sitkovsky
Manfred Thiel
National Institute of Allergy and Infectious Diseases · USLudwig-Maximilians-Universität München · DENational Institutes of Health · USNational Institute of Diabetes and Digestive and Kidney Diseases · USUniversity Medical Centre Mannheim · DEUniversity of Pittsburgh · US

Funding

Single Nephron and MetabolomicsP30DK079307 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLEYMAN, THOMAS R · 2008 to 2022
$13.4M
The Guanosine-Adenosine MechanismR01HL109002 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JACKSON, EDWIN KERRY · 2012 to 2023
$5.1M
The Renal 2',3'-cAMP-Adenosine PathwayR01DK068575 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JACKSON, EDWIN KERRY · 2005 to 2016
$4.0M
Intramural NIH HHSNHLBI NIH HHS HL109002NHLBI NIH HHS R01 HL109002NIDDK NIH HHS DK068575NIDDK NIH HHS DK079307NIDDK NIH HHS P30 DK079307NIDDK NIH HHS R01 DK068575
6 · The paper itself

Abstract

backgroundLiver ischemia-reperfusion injury (IRI) is a known risk factor for the postoperative outcome of patients undergoing liver surgery/transplantation. Attempts to protect from organ damage require multidisciplinary strategies and are of emerging interest in view of patients with higher age and American Society of Anesthesiology status. Ischemic preconditioning has been successfully applied to prevent from IRI during liver resection/transplantation. Because even short periods of ischemia during preconditioning inevitably lead to hypoxia and formation of anti-inflammatory/cytoprotective acting adenosine, we reasoned that short nonischemic hypoxia also protects against hepatic IRI.

methodsMice underwent hypoxic preconditioning (HPC) by breathing 10% oxygen for 10 min followed by 10 min of 21% oxygen before left liver lobe ischemia (45 min) and reperfusion (4 hr). The interactions of hypoxia→adenosine→adenosine receptors were tested by pharmacologic antagonism at adenosine receptor (AR) sites in wild-type mice and in mice with genetic deletions at the A1, A2A, A2B, and A3 ARs. Hepatocellular damage, inflammation, and metabolic effects were quantified by enzyme activities, cytokines, liver myeloperoxidase, blood adenosine, and tissue AMP, respectively.

resultsHepatoprotection by HPC was significant in wild-type and A1, A2A, and A3 AR knockout mice as quantified by lower alanine aminotransferase serum activities, cytokine levels, histologic damage scores, tissue myeloperoxidase concentrations, and preserved AMP concentrations. Protection by HPC was blunted in mice pretreated with the A2B AR antagonist MRS1754 or in A2B AR knockout mice.

conclusionsBecause liver protective effects of HPC are negated when the A2B receptor is nonfunctional, the hypoxia→adenosine→A2B receptor pathway plays a critical role in the prevention of warm IRI in vivo. Hypoxic activation of this pathway warrants use of selective A2B AR agonists or even intermittent hypoxia (e.g., in deceased organ donors) to protect from liver IRI.

Indexed as

Ischemic PreconditioningWarm IschemiaAcetamidesAdenosineAnimalsHepatocytesHypoxiaLiverLiver TransplantationMaleMiceMice, Inbred C57BLMice, KnockoutModels, AnimalPurinesReceptor, Adenosine A2BAcetamidesAdenosineN-(4-cyanophenyl)-2-(4-(2,3,6,7-tetrahydro-2,6-dioxo-1,3-dipropyl-1H-purin-8-yl)-phenoxy)acetamidePurinesReceptor, Adenosine A2B

Identifiers

PMID23073466
PMCPMC3491139
OpenAlexW1970062593

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.