透反应在 perfusion 在异或低载体溶液中的冷保护剂
Ross M Warner1, Jun Yang1, Andrew Drake1
1School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, United States.
PeerJ
|November 29, 2023
概括
器官冷保存使用冷保护剂 (CPA) 防止冰损伤. 这项研究揭示了CPA车辆溶液强度对脏大小和血液流量产生影响,这对于优化冷保存协议至关重要.
科学领域:
- 器官冷保存器官的冷保存方法
- 移植科学 移植科学
- 生物医学工程 生物医学工程
背景情况:
- 器官冷保存为存储用于移植的器官的有限保质期提供了一个解决方案.
- 冷保护剂 (CPA) 对于防止冷保存过程中的冰损伤至关重要,但可能导致毒性和透性损伤.
- 在开发成功的冷保存协议方面,平衡CPA有效性与最小的细胞损伤是关键的挑战.
研究的目的:
- 为了研究冷保护剂 (CPA) 载体溶液强度对器官 perfusion 动态的影响.
- 了解CPA输液对脏大小和血管阻力的影响.
- 为改进器官冷保存协议的设计提供信息.
主要方法:
- (猪和人类) 输液与CPA的比较,在低压和同位素载体溶液中.
- 在CPA输液过程中评估质量变化和血管阻力.
- 通过乳酸脱酶 (LDH) 水平和通过计算机断层扫描 (CT) 的CPA输送来评估透损伤.
主要成果:
- 在新鲜脏中,CPA输液诱导脏质量变化 (收缩-胀反应),在缺血后减少.
- 在低压溶液中注入CPA显著增加了血管抵抗,表明细胞胀和毛细血管直径减少.
- 通过切换到同位素CPA溶液,这种血管抵抗的增加是可逆的.
- 假定CPA溶液不会造成显著的透损伤 (低LDH) 或阻碍CPA输送 (CT评估).
结论:
- CPA载体溶液的强度显著影响器官大小和输液期间的血管阻力.
- 这些发现对设计有效的器官冷保存协议具有关键意义,以尽量减少与 perfusion 相关的损害.
- 优化载体溶液强度是促进移植器官冷保存的关键因素.
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