Molecular and cellular adaptations to extended hypothermic oxygenated perfusion in donation-after-circulatory-death hearts in a porcine model - Report - MDSpire
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Molecular and cellular adaptations to extended hypothermic oxygenated perfusion in donation-after-circulatory-death hearts in a porcine model
Clinical Report: Cellular and Molecular Responses to Prolonged Hypothermic Oxygenated Perfusion
Overview
This study investigates the effects of prolonged hypothermic oxygenated perfusion (HOPE) on porcine hearts harvested after circulatory death. Findings indicate that HOPE significantly preserves cardiomyocyte viability and metabolic stability compared to static cold storage.
Background
Heart transplantation is limited by the availability of suitable donor organs, particularly from donation after circulatory death (DCD) donors. Prolonged warm ischemic times during DCD can lead to significant myocardial injury. Understanding preservation techniques like HOPE is critical for improving outcomes in heart transplantation.
Data Highlights
Preservation Method
Cardiomyocyte Viability
24-hour HOPE
Measurable populations of viable cardiomyocytes
24-hour SCS
Complete loss of viable cardiomyocytes
Key Findings
HOPE for 24 hours preserves cardiomyocyte viability compared to 24-hour static cold storage (SCS).
Minimal transcriptional and metabolic shifts were observed between 2-hour SCS and 24-hour HOPE hearts.
HOPE maintained oxidative and glycolytic balance with limited inflammatory activation.
Omission of normothermic regional perfusion (NRP) during procurement led to significant loss of contractility and cardiomyocyte integrity.
Extended HOPE sustains myocardial and metabolic integrity after circulatory death.
Clinical Implications
The findings suggest that HOPE may be a superior preservation method for DCD hearts, potentially improving transplant outcomes. Clinicians should consider the implications of procurement strategies and preservation techniques on organ viability.
Conclusion
Extended hypothermic oxygenated perfusion shows promise in preserving myocardial integrity after circulatory death, warranting further investigation in clinical settings.
by Morgan K. Moroi, Yaagnik Kosuri, Cary Karcher, Diana Albino, Anthony Campbell, Arianna Adamo, Emre Bektik, Christine Chan, Kenmond Fung, Miroslav Sekulic, Shaheer K. Faruqi, Craig J. Goergen, Melissa Tamimi, Koji Takeda, Giovanni Ferrari
Dr. Uprety discusses the current role of non-invasive testing for coronary artery disease, highlighting evidence-based diagnostic strategies and the appropriate use of imaging modalities to improve early detection, risk stratification, and clinical decision-making.
Damon B. Dixon, MD, at Phoenix Children’s Cardiology, is the author to this EndoText chapter. Dr. Dixon brings nationally recognized expertise in pediatric cardiovascular risk assessment and non?invasive vascular imaging.
