CAJ | 학술논문

目的探讨经静脉移植的骨髓间充质干细胞(BMSCs)对深低温处理的同种异体气管移植后的存活和上皮再生作用.方法用深低温冻储2周和6周的大鼠气管进行同种异体气管移植后,将PKH-26标记后的3～5代BMSCs经鼠尾静脉移植入受体内,通过观察局部PKH-26荧光检测和供体气管的组织学、上皮爬行和再生情况,评价BMSC对移植气管的新生上皮再生作用.结果骨髓间充质干细胞移植并深低温冻储后的移植气管结构完整,组织学检查管腔内为假复层纤毛柱状上皮所覆盖,软骨无变性坏死;术后均能长期存活.PKH-26;标记的BMSCs在受损气管组织定植后呈现红色荧光.结论 BMSCs可迁移并修复受损组织,并通过促进移植气管上皮再生,从而促进气管的损伤恢复.
목적 탐토경정맥이식적골수간충질간세포(BMSCs)대심저온처리적동충이체기관이식후적존활화상피재생작용.방법 용심저온동저2주화6주적대서기관진행동충이체기관이식후,장PKH-26표기후적3～5대BMSCs경서미정맥이식입수체내,통과관찰국부PKH-26형광검측화공체기관적조직학、상피파행화재생정황,평개BMSC대이식기관적신생상피재생작용.결과 골수간충질간세포이식병심저온동저후적이식기관결구완정,조직학검사관강내위가복층섬모주상상피소복개,연골무변성배사;술후균능장기존활.PKH-26;표기적BMSCs재수손기관조직정식후정현홍색형광.결론 BMSCs가천이병수복수손조직,병통과촉진이식기관상피재생,종이촉진기관적손상회복.
Objective To investigate the role of BMSCg on enhancing the implant survival and bacheal epithelium regeneration. Methods After transplanted with cryopreserved 2 weeks and 6 weeks allocraft, PHK-26 labeled 3-5 passage BMSCs were injected into the recipient rats via tail vein. Rats in the control groups were injected with the same amount of PBS.We observed the histology of the transplanted trachea including epithelium growth and regeneration, and the PKH-26 fluorescence levels at the para-anastomotic trachea to evaluate the role of BMSC transplantation on the epithelium regeneration. Results Rats from BMSCs injection group survived a long period. Histological observation showed that the tracheal lumen was covered by psudo-striated ciliated columnar epithelium. The cartilage structure was intact. There are no signs of denaturation and necrosis. In the PBS injection group, epithelium regeneration is better in PBS-6-week group than PBS-2-week group. The longest survival time in PBS-6-week group was 32 days, whereas it was 10 days in PBS-2-week group. In BMSCs injection group, rats in BMSC-6-week groups survived longer than 8-week group(12 rats were terminated at 1 week, 4 weeks and 8weeks as planned). There was one rat who survived and were terminated at the designated 8 weeks time point (there were 8regenerated epithelium was similar in the two BMSC transplanted groups. PKH-26 labeled BMSCs migrated to the implant site and showed red fluorescence, with most red fluorescence shown at the anastomotic part. Conclusion BMSCs can migrate to the impaired tissue to repair it. BMSCs may exert their reparation function via enhancing epithelium regeneration.