Improvement of rat lung structure and function after preservation with celsior

Area of Science:

• Cardiovascular and Respiratory System Physiology
• Organ Transplantation and Preservation

Background:

• Ischemia/reperfusion injury increases pulmonary microvascular permeability.
• Celsior solution has shown potential in reducing this permeability.

Purpose of the Study:

• To evaluate reimplantation-induced lung injury after preservation with Celsior, Celsior + prostacyclin, and Euro-Collins solution.
• To compare structural and functional outcomes of different lung preservation solutions.

Main Methods:

• Isolated, reperfused rat lungs were preserved using Celsior, Celsior + prostacyclin, or Euro-Collins solution.
• Lungs underwent 2 hours of cold ischemia followed by 50 minutes of in vitro reperfusion.
• Arterial and venous oxygen tensions were measured, and histological changes were quantified stereologically.

Main Results:

• Celsior preservation led to a significantly higher volume of air-filled alveolar space and fewer atelectatic alveoli compared to other groups.
• Improved oxygenation parameters (arterial-venous oxygen tension difference) were observed in the Celsior group.
• No significant differences in intraalveolar edema were found, but alveolar tissue volume increased in the Euro-Collins group.

Conclusions:

• Celsior solution demonstrated superior structural characteristics and improved oxygenation compared to Euro-Collins and Celsior + prostacyclin.
• These findings support the prospective clinical advantage of Celsior for organ preservation.