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Advancements in xenotransplantation intersecting with modern machine perfusion technology offer promising solutions to patients with liver failure providing a valuable bridge to transplantation and extending graft viability beyond current limitations. Patients facing acute or acute chronic liver failure, post-hepatectomy liver failure, or fulminant hepatic failure often require urgent liver transplants which are severely limited by organ shortage, emphasizing the importance of effective bridging approaches. Machine perfusion is now increasingly used to test and use genetically engineered porcine livers in translational studies, addressing the limitations and costs of non-human primate models. Current reports about artificial and bioartificial liver support combined with xenografts showcase the potential in ex vivo xenogeneic perfusion. Breakthroughs, such as the perfusion of genetically modified porcine liver with FDA-approved machine perfusion systems connected to human blood circulation, underscore the interest and potential feasibility of a "liver dialysis" bridge to allotransplantation or recovery. This review provides an overview of the past and current research in the field of ex vivo pig liver xenoperfusion.
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http://dx.doi.org/10.1111/xen.70011 | DOI Listing |
Minerva Anestesiol
September 2025
Department of Cardiac, Thoracic and Vascular Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania.
Background: Postoperative cognitive dysfunction (POCD) occurs in 20% to 80% of patients following cardiac surgical interventions. The incidence of delirium is from 20% to 50%. Impaired cerebral autoregulation (CA) during cardiopulmonary bypass (CPB) contributes to these issues.
View Article and Find Full Text PDFExp Clin Transplant
August 2025
>From the Division of Transplant Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; and the Sackler School of Medicine at Tel Aviv University, Tel Aviv, Israel.
Objectives: On-site normothermic machine perfusion of the liver may require hepatic arterial reconstruction. The effect of arterial reconstruction on the deve-lopment of primary ischemic cholangiopathy has not been fully elucidated in liver transplants with organs donated after circulatory death. The aim of this study was to evaluate the effect of normothermic machine perfusion with arterial reconstruction at the onset of ischemic cholangiopathy in liver transplants with organs donated after circulatory death.
View Article and Find Full Text PDFNat Rev Nephrol
September 2025
Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
The global shortage of suitable donor kidneys is the primary challenge in kidney transplantation, and it is exacerbated by ageing donors with increased numbers of health issues. Improving organ assessment, preservation and conditioning could enhance organ utilization and patient outcomes. Hypothermic machine perfusion (HMP) is associated with better results than static cold storage by reducing delayed graft function and improving short-term graft survival, especially in kidneys recovered from marginal-quality donors.
View Article and Find Full Text PDFPerfusion
September 2025
Department of Surgery, Columbia University, New York, NY, USA.
Static cold storage (SCS) on ice has remained the gold standard preservation method for heart transplantation, and prolonged cold ischemia outside the typical 4-6 hour window is associated with an increased risk of primary graft dysfunction - a consequence attributed to ischemic damage and reperfusion injury. This, unfortunately limits the travel radius for donor heart procurement, a key factor that contributes to the overall shortage of donor organs. Recent research and clinical data have illustrated the validity of other preservation systems in preserving cardiac allografts, and many of these devices have shown promise in potentially prolonging the tolerated ischemic time beyond the accepted standard.
View Article and Find Full Text PDFJ Cardiovasc Transl Res
September 2025
Department of Cardiac Surgery, University Hospital Halle (Saale), University of Halle, Ernst-Grube-Straße 40, 06120, Halle (Saale), Germany.
We compared the effects of ex-vivo machine perfusion (EVMP) of hearts donated after circulatory death (DCD) with the single-shot solutions HTK-N and Del Nido cardioplegia (DNC) on left-ventricular (LV) contractility and myocardial microcirculation. In a DCD pig model, hearts were maintained by EVMP with hypothermic, oxygenated HTK-N (DCD-HTK-N; N = 8) or DNC (DCD-DNC; N = 8) followed by reperfusion with blood, including assessment of contractility and microcirculation with Laser-Doppler-Flow (LDF). We performed transcriptomics using microarrays.
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