First clinical experience with polysol solution: pilot study in living kidney transplantation

Area of Science:

• Nephrology
• Transplantation immunology
• Organ preservation

Background:

• Organ preservation solutions are critical for successful kidney transplantation.
• The University of Wisconsin (UW) solution is a widely used standard.
• Polysol solution is a newer alternative organ preservation solution requiring clinical evaluation.

Purpose of the Study:

• To assess the clinical safety and efficacy of polysol solution for kidney graft preservation in living donor kidney transplantation.
• To compare rejection rates and graft function between polysol solution and the University of Wisconsin solution.

Main Methods:

• A prospective pilot study involving nine adult donor-recipient pairs using polysol solution for kidney graft washout and cold storage.
• Monitoring of adverse reactions and renal function at 1, 6, and 12 months post-transplant.
• Comparison with a historical control group (n=190) transplanted using University of Wisconsin solution between 2002-2008.

Main Results:

• The polysol solution group exhibited a higher incidence of acute rejection at all monitored time points compared to the UW solution control group.
• Antibody-mediated rejection was observed more frequently in recipients receiving grafts preserved with polysol solution.
• Post-transplant renal function was comparable between the polysol and UW solution groups.

Conclusions:

• This pilot study suggests polysol solution may be associated with increased acute and antibody-mediated rejection in living kidney transplantation.
• Despite comparable renal function, the higher rejection rates led to the premature termination of the study.
• Further research is needed to understand the implications of polysol solution in organ preservation, particularly regarding immunogenicity.