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• W2942019273 endingPage "e0215619" @default.
• W2942019273 startingPage "e0215619" @default.
• W2942019273 abstract "One of the most promising applications of liver normothermic machine perfusion (NMP) is the potential to directly assess graft viability and injury. In most NMP studies, perfusate transaminases are utilized as markers of graft injury. Our aim was to further elucidate the metabolism of transaminases by healthy porcine livers during NMP, specifically whether such livers could clear circuit perfusate transaminases.A highly concentrated transaminase solution was prepared from homogenized liver, with an aspartate aminotransferase (AST) level of 107,427 U/L. Three livers in the treatment group were compared to three controls, during 48 hours of NMP. In the treatment group, the circuit perfusate was injected with the transaminase solution to artificially raise the AST level to a target of 7,500 U/L. Perfusate samples were taken at two-hour intervals and analyzed for biochemistry until NMP end. Graft oxygen consumption and vascular parameters were monitored.Compared to controls, treated perfusions demonstrated abrupt elevations in transaminase levels (p>0.0001) and lactate dehydrogenase (LDH) (p>0.0001), which decreased over time, but never to control baseline. Liver function, as demonstrated by lactate clearance and oxygen consumption was not different between groups. The treatment group demonstrated a higher portal vein resistance (p = 0.0003), however hepatic artery resistance was similar. Treated livers had higher bile production overall (p<0.0001).Addition of high levels of transaminases and LDH to a healthy porcine liver during ex situ perfusion results in progressive clearance of these enzymes, suggesting preserved liver metabolism. Such tolerance tests may provide valuable indicators of prospective graft function." @default.
• W2942019273 created "2019-05-03" @default.
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• W2942019273 date "2019-04-24" @default.
• W2942019273 modified "2023-10-14" @default.
• W2942019273 title "Clearance of transaminases during normothermic ex situ liver perfusion" @default.
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• W2942019273 doi "https://doi.org/10.1371/journal.pone.0215619" @default.
• W2942019273 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6481840" @default.
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