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Updated: Jul 18, 2026
Induction and Assessment of Ischemia-reperfusion Injury in Langendorff-perfused Rat Hearts
Published on: July 27, 2015
End-ischemic pharmacological cocktail treatment to mitigate rewarming/reperfusion injury
Laura Malkus1, Stefanie Bertram2, Charlotte von Horn1
1Surgical Research Department, University Hospital Essen, Germany.
Abstract:
Increasing shortage of donor organs leads to the acceptance of less than optimal grafts for transplantation, up to and including organs donated after circulatory standstill of the donor. Therefore, protective strategies and pharmacological interventions destined to reduce ischemia induced tissue injury are considered a worthwhile focus of research. The present study evaluates the potential of a multidrug pharmacological approach as single flush at the end of static preservation to protect the liver from reperfusion injury. Livers were retrieved from male Wistar rats 20 min after cardiac standstill. The organs were cold stored for 18 h, flushed with 20 ml of saline, kept at room temperature for 20 min, and reperfused at 37 °C with oxygenated Williams E solution. In half of the cases, the flush solution was supplemented with a cocktail containing metformin, bucladesine and cyclosporin A. Upon reperfusion, treated livers disclosed a massive mitigation of hepatic release of alanine aminotransferase and aspartate aminotransferase, along with a significant approximately 50 % reduction of radical mediated lipid peroxidation, caspase activation and release of TNF-alpha. Even after preceding cold preservation, a pharmacological cocktail given as single flush is capable to mitigate manifestations of reperfusion injury in the present model.
Insights
A novel drug cocktail, administered as a single flush, significantly reduces liver damage from ischemia and reperfusion injury in organ transplantation. This approach protects organs donated after circulatory standstill, improving graft viability.
Area of Science:
- Transplantation immunology
- Organ preservation
- Pharmacological interventions
Background:
- Organ donor shortage necessitates using suboptimal grafts, including those from donors after circulatory standstill.
- Ischemia-reperfusion injury remains a major challenge in organ transplantation, impacting graft survival.
- Developing protective strategies to mitigate this injury is crucial for improving transplant outcomes.
Purpose of the Study:
- To evaluate a multidrug pharmacological approach as a single flush during static preservation.
- To assess the protective potential against liver reperfusion injury in a rat model.
- To investigate the efficacy of a specific drug cocktail (metformin, bucladesine, cyclosporin A).
Main Methods:
- Rat livers were retrieved 20 minutes after cardiac standstill and cold-stored for 18 hours.
- A flush solution containing a cocktail of metformin, bucladesine, and cyclosporin A was compared to saline.
- Organs were reperfused at 37°C, and biochemical markers of injury were assessed.
Main Results:
- The drug cocktail significantly reduced the release of liver enzymes (ALT, AST) upon reperfusion.
- A ~50% reduction in lipid peroxidation, caspase activation, and TNF-alpha release was observed in treated livers.
- The protective effect was evident even after prolonged cold preservation.
Conclusions:
- A single-flush pharmacological cocktail can effectively mitigate liver reperfusion injury.
- This strategy shows promise for protecting organs donated after circulatory standstill.
- The findings support the development of targeted interventions to improve organ graft quality.
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