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Updated: Jul 7, 2026
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Porcine Liver Transplantation Without Veno-Venous Bypass As an Extended Criteria Donor Model
Published on: August 17, 2022
Optimising post-conditioning time of marginal donor livers.
Steffen Manekeller1, Alexandra Seinsche, Judith Stegemann
1Department of Surgery, Faculty of Medicine, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany. Steffen.Manekeller@ukb.uni-bonn.de
Langenbeck'S Archives of Surgery
|February 20, 2008
Summary
One hour of machine perfusion post-conditioning significantly improves marginal liver viability after cold storage. This duration optimizes organ quality for transplantation, with longer or shorter times showing no additional benefit.
Area of Science:
- Transplantation research
- Organ preservation techniques
- Surgical innovation
Background:
- Increasing demand for organ transplants necessitates using marginal donor livers.
- Cold storage (CS) is standard but can compromise organ quality.
- Machine perfusion, specifically post-conditioning (PC), shows promise for improving marginal graft viability.
Purpose of the Study:
- To determine the optimal duration of aerobic machine perfusion (post-conditioning) for marginal rat livers after cold storage.
- To evaluate the impact of varying post-conditioning times on liver viability markers.
Main Methods:
- Rat livers underwent cold storage (18 hours) in histidine tryptophan ketoglutarate (HTK) solution.
- Post-conditioning (PC) involved cold perfusion with HTK for 0.5, 1, 2, or 3 hours.
- Organ viability was assessed via warm reperfusion and measurement of bile production, enzyme release, ATP content, and apoptosis markers.
Main Results:
- One hour of PC significantly increased bile production and decreased liver enzyme release compared to CS alone.
- Adenosine triphosphate (ATP) levels were significantly higher in livers treated with 1-hour PC.
- No apoptosis markers were detected after 1-hour PC, suggesting preserved cellular integrity.
Conclusions:
- A 1-hour cold machine perfusion post-conditioning period effectively enhances the viability of marginal rat livers after cold storage.
- Extending or shortening the post-conditioning time beyond 1 hour did not yield further improvements in organ viability.
