An oxygenated perfluorocarbon emulsion improves liver graft preservation evaluated in DCD livers of male sprague dawley rats

Revolution in Organ Preservation: Technological Exploration

Organ preservation plays a critical role in addressing transplantation challenges, including donor shortages and ischemia-reperfusion injury (IRI). Continuous advancements in preservation technologies are essential to meet the increasing demand for transplantable organs. This review provides a comprehensive analysis of organ preservation techniques, spanning from hypothermic storage to advanced methods such as supercooling, vitrification, and partial freezing. Historical milestones, including the development of the EuroCollins, University of Wisconsin (UW), ET-Kyoto, and Celsior solutions, are discussed alongside innovations in machine perfusion and cryopreservation technologies. Particular emphasis is placed on the underlying mechanisms of these techniques, such as metabolic rate suppression, prevention of ice crystal formation, and the application of cryoprotectants, all aimed at extending preservation duration and improving organ quality. Emerging trends, such as the integration of nanotechnology and artificial organ cultivation, are highlighted as promising directions to enhance preservation efficiency. By exploring current advancements and future trends, this review underscores the importance of technological innovation in addressing the global organ shortage crisis and improving transplantation outcomes. STATEMENT OF SIGNIFICANCE: This review offers a comprehensive analysis of the advancements in organ preservation technologies, a critical area in addressing the global organ shortage crisis. By detailing the evolution from early perfusion techniques to cutting-edge innovations like supercooling, vitrification, and nanotechnology, the work underscores the importance of extending organ viability and improving transplant outcomes. Importantly, it bridges historical milestones with emerging trends, showcasing how integration of novel materials and methodologies can revolutionize organ transplantation. This work not only enriches the scientific understanding of organ preservation but also opens pathways for interdisciplinary innovations, setting the stage for the development of sustainable and efficient organ banks. By aligning technological advancements with clinical challenges, it provides actionable insights that could reshape transplantation medicine.

Influence of Parameters Used to Prepare Sterile Solutions of Poloxamer 188 on Their Physicochemical Properties

The physicochemical properties of emulsions based on poloxamers (triblock copolymers of a hydrophobic polyoxypropylene chain and two hydrophilic polyoxyethylene chains) depend on the composition and preparation method. This study examined the impact of poloxamer P188 concentration, autoclaving mode, heating, and salt presence on the viscosity, particle size distribution, and morphology of particles using viscometric analysis, dynamic light scattering (DLS), and atomic force microscopy (AFM). It was shown that sample preparation affects the particle size and morphology but not the chemical composition of P188. The most similar properties were found for 10% P188 samples sterilized by filtration and autoclaving. The higher autoclave temperature and additional heating of the 10% P188 samples to 70 °C resulted in the formation of larger particles. For 4% P188 samples with 0.6% NaCl, samples heated at 70 °C for 15 h after sterilization filtration and autoclaving were the most similar and homogeneous. The 4% P188 sample with the higher autoclave temperature and subsequent heating had the lowest viscosity. In contrast to 10% P188, for 4% P188 in the presence of salt, the lack of heating resulted in the formation of large particles. The 4% P188 solutions with NaCl were more stable during storage than those with a higher concentration.

Research progress on anatomy reconstruction of rat orthotopic liver transplantation

Rat orthotopic liver transplantation (ROLT) serves as an ideal animal model and has gained popularity in addressing complications and perioperative treatments related to clinical liver transplantation. Through extensive research on ROLT model construction, the conventional "two-cuff" method has gradually become established. However, traditional methods still present challenges including limited visual field during vascular suturing, vascular torsion, biliary tract injuries, and prolonged anhepatic periods. Consequently, this paper aims to review the latest advancements and various techniques in this field, providing a valuable reference for individuals interested in constructing ROLT models.