Tissue preservation

Tissue preservation is a multidisciplinary biological and medical process aimed at maintaining the structural and functional integrity of cells, tissues, or organs outside their natural physiological environment. It is a cornerstone of organ transplantation, regenerative medicine, and clinical diagnostics. The primary objective is to arrest or significantly slow down metabolic processes and enzymatic degradation, typically through hypothermia or chemical stabilization, to prevent irreversible cellular injury during periods of ischemia or storage (NIH, 2023). While not a specific molecular target like a receptor or enzyme, it involves the modulation of various pathways including apoptosis, oxidative stress, and ion transport to ensure viability upon reperfusion or thawing. Modern strategies involve the use of specialized preservation solutions that provide metabolic substrates and prevent cellular edema, as well as emerging technologies like normothermic machine perfusion (PubMed, 2022).

Other names

Organ preservationCryopreservationBiostasisEx vivo preservation

Prevention of cellular degradation by utilizing hypothermia to reduce metabolic rate, buffering pH, providing osmotic support to prevent swelling, and using antioxidants to mitigate oxidative stress during ischemia.