Transplant International (May 2024)

Machine Perfusion Enables 24-h Preservation of Vascularized Composite Allografts in a Swine Model of Allotransplantation

  • Marion Goutard,
  • Marion Goutard,
  • Marion Goutard,
  • Pierre Tawa,
  • Pierre Tawa,
  • Pierre Tawa,
  • Yanis Berkane,
  • Yanis Berkane,
  • Yanis Berkane,
  • Yanis Berkane,
  • Yanis Berkane,
  • Alec R. Andrews,
  • Alec R. Andrews,
  • Alec R. Andrews,
  • Casie A. Pendexter,
  • Casie A. Pendexter,
  • Casie A. Pendexter,
  • Reinier J. de Vries,
  • Reinier J. de Vries,
  • Reinier J. de Vries,
  • Reinier J. de Vries,
  • Victor Pozzo,
  • Victor Pozzo,
  • Victor Pozzo,
  • Golda Romano,
  • Golda Romano,
  • Golda Romano,
  • Hyshem H. Lancia,
  • Hyshem H. Lancia,
  • Hyshem H. Lancia,
  • Irina Filz von Reiterdank,
  • Irina Filz von Reiterdank,
  • Irina Filz von Reiterdank,
  • Irina Filz von Reiterdank,
  • Irina Filz von Reiterdank,
  • Nicolas Bertheuil,
  • Nicolas Bertheuil,
  • Ivy A. Rosales,
  • Ivy A. Rosales,
  • Ira Doressa Anne L. How,
  • Ira Doressa Anne L. How,
  • Mark A. Randolph,
  • Mark A. Randolph,
  • Mark A. Randolph,
  • Alexandre G. Lellouch,
  • Alexandre G. Lellouch,
  • Alexandre G. Lellouch,
  • Curtis L. Cetrulo,
  • Curtis L. Cetrulo,
  • Curtis L. Cetrulo,
  • Korkut Uygun,
  • Korkut Uygun,
  • Korkut Uygun

DOI
https://doi.org/10.3389/ti.2024.12338
Journal volume & issue
Vol. 37

Abstract

Read online

The current gold standard for preserving vascularized composite allografts (VCA) is 4°C static cold storage (SCS), albeit muscle vulnerability to ischemia can be described as early as after 2 h of SCS. Alternatively, machine perfusion (MP) is growing in the world of organ preservation. Herein, we investigated the outcomes of oxygenated acellular subnormothermic machine perfusion (SNMP) for 24-h VCA preservation before allotransplantation in a swine model. Six partial hindlimbs were procured on adult pigs and preserved ex vivo for 24 h with either SNMP (n = 3) or SCS (n = 3) before heterotopic allotransplantation. Recipient animals received immunosuppression and were followed up for 14 days. Clinical monitoring was carried out twice daily, and graft biopsies and blood samples were regularly collected. Two blinded pathologists assessed skin and muscle samples. Overall survival was higher in the SNMP group. Early euthanasia of 2 animals in the SCS group was linked to significant graft degeneration. Analyses of the grafts showed massive muscle degeneration in the SCS group and a normal aspect in the SNMP group 2 weeks after allotransplantation. Therefore, this 24-h SNMP protocol using a modified Steen solution generated better clinical and histological outcomes in allotransplantation when compared to time-matched SCS.

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