APA微囊移植免疫隔离效果的研究

Study of APA microcapsules in transplantation

目的 :探讨海藻酸钠 多聚赖氨酸 海藻酸钠 (APA)微囊在宿主体内的免疫隔离作用。方法 :分别将APA空微囊、牛嗜铬细胞 (BCCs)和APA微囊化BCCs(APA BCCs)移植到绵羊的蛛网膜下腔中 ,观察宿主细胞免疫指标和组织形态学的变化。结果 :各组移植后血中淋巴细胞数量无明显变化 ;APA微囊包裹可明显阻止BCCs移植引起的血中CD4 + T淋巴细胞比例、CD4 + CD8+ 值和脑脊液中淋巴细胞数量的增加 ;APA微囊包裹可减轻羊移植区组织反应 ,延长移植物的存活。结论 :APA微囊具有免疫隔离效果 ,可有效地阻止细胞免疫排斥反应。

Objective:To study the immunoisolation effects of alginate-polylysine-alginate(APA)-microcapsules in vito.Methods:To observe changes of cellular immune and tectology of sheeps after hollow microcapsules, Bovine Chromaffin Cells(BCCs) and APA Microencapsulated BCCs(APA-BCCs) transplanted to the spinal subarachnoid space.Results:The blood lymphocyte numbers of each group didn't change; APA-microcapsule could prevent blood CD4 +T lymphocyte , CD4 +/CD8 + and CSF lymphocyte from increasing caused by BCCs transplantation; APA microencapsulation could reduce histological reactions in transplantation area and prolong the survival of the transplant.Conclusion:APA microcapsules possess the immunoisolation effects and can efficiently prevent immunoreactions.