*Purpose: Preservation solutions (UW, HTK and IGL-1) are widely used in clinical liver transplantation. It is well known that the composition of the preservation solution determines the outcome of the transplanted liver. It has been demonstrated that PEG35 is a key factor in the IGL-1 preservation solution. Therefore, a modified IGL-1 solution (with increased PEG concentration) was compared to HTK and UW preservation solutions. The aim of this communication is to investigate the effects of the oncotic agent PEG 35 on NLRP3 inflammasome activity and redox state during static preservation.

*Methods: Fatty livers from male Zücker obese rats were preserved for 24 h at 4ºC in the studied solutions. After organ recovery and rinsing liver grafts with Ringer Lactate solution, liver injury was measured as AST/ALT and GLDH; redox state as GSH/GSSG, GST, GR, GPx, 4HNE; and inflammasome and precursors measured as NLRP3, HMGB1, and GRP78.

*Results: Increases in the reducing redox capability of the cell are associated with decreased inflammasome activation and liver damage.

*Conclusions: Data reported here show that the solution with increased content of PEG35 (Modified IGL-1) well correlated with a better protection through a significant prevention of inflammation in front of UW and HTK.

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