Liver preservation techniques for transplantation

Area of Science:

• Transplantation Biology
• Organ Preservation
• Surgical Innovation

Background:

• Effective liver preservation is crucial for successful liver transplantation.
• Current methods like hypothermic storage (HS) and hypothermic pulsatile perfusion (HPP) require optimization.
• Various preservation solutions impact graft viability.

Purpose of the Study:

• To compare the efficacy of hypothermic storage (HS) and hypothermic pulsatile perfusion (HPP) using different preservation solutions.
• To evaluate liver function and histology after 24-hour preservation using an isolated normothermic perfusion model (LIPM).
• To identify the optimal preservation method and solution for 24-hour liver preservation.

Main Methods:

• Canine livers were preserved for 24 hours using HS or HPP with TP-V, modified Collins, Belzer, or albumin solutions.
• Preserved livers were tested in an isolated normothermic perfusion model (LIPM) for 3 hours.
• Liver function was assessed by analyzing perfusate biochemical markers (LDH, SGOT, ATP levels, etc.) and performing HIDA scans.
• Histologic examination evaluated cellular and organ damage.

Main Results:

• Livers preserved with TP-V solution (via HS or HPP) showed superior outcomes compared to modified Collins, Belzer, or albumin solutions.
• The TP-V solution demonstrated better preservation of liver function and reduced cellular/organ damage.
• Hypothermic pulsatile perfusion (HPP) with TP-V solution yielded the best overall functional response and histologic results.

Conclusions:

• Hypothermic pulsatile perfusion (HPP) using the TP-V solution is the preferred method for 24-hour liver preservation.
• TP-V solution offers significant advantages over other tested preservation solutions.
• This study provides evidence for improved liver preservation strategies in transplantation.