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Resuscitation of Ischemic Donor Livers with Normothermic Machine Perfusion: A Metabolic Flux Analysis of Treatment in Rats

Overview of attention for article published in PLOS ONE, July 2013
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Title
Resuscitation of Ischemic Donor Livers with Normothermic Machine Perfusion: A Metabolic Flux Analysis of Treatment in Rats
Published in
PLOS ONE, July 2013
DOI 10.1371/journal.pone.0069758
Pubmed ID
Authors

Maria-Louisa Izamis, Herman Tolboom, Basak Uygun, Francois Berthiaume, Martin L. Yarmush, Korkut Uygun

Abstract

Normothermic machine perfusion has previously been demonstrated to restore damaged warm ischemic livers to transplantable condition in animal models. However, the mechanisms of recovery are unclear, preventing rational optimization of perfusion systems and slowing clinical translation of machine perfusion. In this study, organ recovery time and major perfusate shortcomings were evaluated using a comprehensive metabolic analysis of organ function in perfusion prior to successful transplantation. Two groups, Fresh livers and livers subjected to 1 hr of warm ischemia (WI) received perfusion for a total preservation time of 6 hrs, followed by successful transplantation. 24 metabolic fluxes were directly measured and 38 stoichiometrically-related fluxes were estimated via a mass balance model of the major pathways of energy metabolism. This analysis revealed stable metabolism in Fresh livers throughout perfusion while identifying two distinct metabolic states in WI livers, separated at t = 2 hrs, coinciding with recovery of oxygen uptake rates to Fresh liver values. This finding strongly suggests successful organ resuscitation within 2 hrs of perfusion. Overall perfused livers regulated metabolism of perfusate substrates according to their metabolic needs, despite supraphysiological levels of some metabolites. This study establishes the first integrative metabolic basis for the dynamics of recovery during perfusion treatment of marginal livers. Our initial findings support enhanced oxygen delivery for both timely recovery and long-term sustenance. These results are expected to lead the optimization of the treatment protocols and perfusion media from a metabolic perspective, facilitating translation to clinical use.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 72 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 1 1%
France 1 1%
Unknown 70 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 17 24%
Researcher 17 24%
Student > Doctoral Student 8 11%
Other 7 10%
Professor > Associate Professor 5 7%
Other 11 15%
Unknown 7 10%
Readers by discipline Count As %
Medicine and Dentistry 28 39%
Engineering 11 15%
Agricultural and Biological Sciences 8 11%
Biochemistry, Genetics and Molecular Biology 4 6%
Pharmacology, Toxicology and Pharmaceutical Science 1 1%
Other 4 6%
Unknown 16 22%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 July 2013.
All research outputs
#20,196,821
of 22,715,151 outputs
Outputs from PLOS ONE
#173,072
of 193,929 outputs
Outputs of similar age
#173,941
of 197,903 outputs
Outputs of similar age from PLOS ONE
#4,264
of 4,870 outputs
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