案例报告:人类气管移植随着时间的推移而经历渐进的重新表皮化
Benjamin M Laitman1, Pamela Cruz-Encarnacion1, Ronald E Gordon2
1Department of Otolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, U.S.A.
The Laryngoscope
|November 17, 2023
概括
第一次人类气管移植显示了最初的上皮损失,但随着时间的推移恢复了正常的呼吸道内膜. 观察到不同的愈合模式在瘤与中部移植.
科学领域:
- 再生医学是一种再生医学.
- 移植生物学 移植生物学
- 组织病理学 组织病理学
背景情况:
- 气管移植为长段气管缺陷提供了一个解决方案.
- 血管化单阶段气管移植成功进行.
- 纤毛表皮在粘膜清除中的作用对于气管功能至关重要.
研究的目的:
- 为了检查第一个单阶段人类气管移植的组织学变化.
- 评估复上皮质化过程和移植后的上皮质恢复.
主要方法:
- 在移植后收集了气管粘膜的连续内镜活检.
- 组织学分析包括血素和欧染色,电子显微镜和免疫组织化学.
主要成果:
- 移植后一周观察到状细胞和血清细胞的初始损失.
- 皮质的恢复开始于两周,在解和中部移植部位之间存在差异.
- 在中部移植中发现了状转化症,而静脉突起显示了表皮细胞的增殖和早期的纤毛细胞.
- 正常的状上皮和粘膜细胞随着时间的推移而重新出现,没有慢性炎症.
结论:
- 气管全移植成功地在缺血性损伤后再生了正常的呼吸上皮质.
- 显著的重新上皮化机制可能存在于解位 (受体细胞迁移) 和中部移植 (捐赠细胞增殖).
- 了解这些机制对于优化气管移植结果至关重要.
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