Abstract
We examined whether pancreas grafts preserved by the two-layer method maintained adenine nucleotides pool as substrates for ATP synthesis before reperfusion and had the ability to recover pancreatic tissue perfusion and synthesize ATP promptly after reperfusion. After preservation by the two-layer cold storage method using EC for 48 h (group 1) or simple cold storage in EC for 48 h (group 2), canine pancreas grafts were autotransplanted. In controls (group 3), canine pancreas grafts were autotransplanted without preservation. Tissue adenine nucleotide concentrations were measured using high-performance liquid chromatography, and pancreatic tissue perfusions were measured using the hydrogen gas clearance method. Graft survival rates were five of five, zero of five, and five of five in groups 1, 2, and 3, respectively. Total adenine nucleotide levels before reperfusion in group 1 were almost the same as in group 2. Furthermore, ATP tissue levels in group 1 before reperfusion were also the same as in group 2. However, tissue ATP levels in group 1 after 2 h of reperfusion (6.71 +/- 1.19 mumol/g dry weight) were significantly higher than group 2 (4.51 +/- 0.51 mumol/g dry weight; p < 0.05). On the other hand, pancreatic tissue perfusions in grafts preserved by the two-layer method (group 1) after 2 h of reperfusion were significantly higher than in group 2. We conclude that oxygenation of pancreas grafts during preservation by the two-layer method allows for ATP synthesis and leads to maintenance of the grafts' ability to recover ATP levels and tissue perfusions after reperfusion.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call