已故捐赠者的功能和分支链氨基酸代谢在ex vivo正常热 perfusion 期间
Armin Ahmadi1, Jacquelyn Yu2, Jennifer E Loza2
1Department of Medicine, Division of Nephrology, University of California, Davis, California, USA.
Kidney international
|July 29, 2024
概括
外体正常热输液可以评估脏移植的活力. 六小时的输液揭示了代谢差异,特别是在分支链氨基酸代谢中,区分了良好的和差的脏表现.
科学领域:
- 移植研究 移植研究
- 器官保护科学 器官保护科学
- 损伤的生物化学
背景情况:
- 目前的 perfusion 协议不足以满足 ex vivo 生理需求.
- 活体常温输液 (Ex vivo normothermic perfusion,简称EVNP) 是一种评估高风险捐赠脏是否适合移植的方法.
研究的目的:
- 研究组织代谢变化与损伤生物标志物/功能参数之间的关系.
- 用EVNP评估已故捐赠脏的器官性能和活力.
主要方法:
- 对8个已故的捐赠脏进行分析,这些脏不适合移植,经过12小时的EVNP.
- 根据血液流动和尿液输出,将脏分为"好"和"差"的表现.
- 测量尿中性粒细胞凝酶相关的卡林 (NGAL) 和组织代谢概况 (代谢学,脂质学).
主要成果:
- 表现良好的人在6小时后表现出尿量峰值和肌素清除.
- 表现不佳的患者在6小时后尿液NGAL水平显著提高.
- 分支链氨基酸代谢和脂质积累 (甘油脂,脂) 差异化功能,与尿液输出负相关.
结论:
- 六个小时的EVNP足以观察功能恢复和识别性能差异.
- 分支链氨基酸代谢是EVNP期间功能和性的一个关键决定因素.
- 代谢分析可以区分器官活力,并预测EVNP环境中的结果.
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