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- W2052514054 abstract "Energy charge and capacity for adenosine triphosphate (ATP) synthesis have been demonstrated to play a major role in the maintenance of organ function after liver preservation for transplantation. The aim of this study was to evaluate whether a supply of liposomally-entrapped ATP during preservation could improve the energy state and metabolism of cold-stored rat liver.In the first set of experiments, the uptake of ATP-containing liposomes and their effects on hepatic viability were determined in isolated perfused unstored rat liver. In the second set of experiments, rat livers were preserved for 18 h at 4 degrees C in UW solution in the presence of these liposomes, and effects on energy state, cell volume and metabolism were evaluated. In each part, data were compared with adequate control, unloaded liposome-treated, and free ATP-treated groups (n=6 in each group).In non-stored livers, ATP-containing liposomes were taken up by the liver; they did not alter hepatic viability and induced a decrease in energy substrate consumption (glucose and amino acids), and an improvement in intrahepatic ATP content (+23% vs. Control). Addition of liposomally-entrapped ATP during cold storage produced a significant attenuation of the decrease in hepatic ATP content (Lip ATP 2: 524+/-45 vs. Control 2: 364+/-106 nmol/g; p<0.05), and induced, during reperfusion, a decrease in proteolysis associated with an increase in cell volume compared with the other groups (Lip ATP 2: 633+/-63 vs. Control 2: 532+/-38, Unloaded Lip 2: 483+/-55 and Free ATP 2: 500+/-29 microl/g; p<0.01).These data indicate that liposomally-entrapped ATP represents an effective means to improve liver graft energy state and function. The decrease in protein degradation may be related to the modification of cell volume." @default.
- W2052514054 created "2016-06-24" @default.
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- W2052514054 date "2000-07-01" @default.
- W2052514054 modified "2023-10-15" @default.
- W2052514054 title "Cold preservation injury in rat liver: effect of liposomally-entrapped adenosine triphosphate" @default.
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- W2052514054 doi "https://doi.org/10.1016/s0168-8278(00)80161-0" @default.
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