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血管组织工程的研究及应用进展 被引量:6
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作者 黄德清 《生物医学工程学杂志》 EI CAS CSCD 2002年第4期688-691,702,共5页
血管组织工程是在体外构建理想的血管移植物 ,移植后无免疫排异反应 ,能维持血管腔长期通畅的一门新技术。本文综述了血管组织工程的定义 ,种子细胞的获取及生物相容性材料的选择 ,组织工程化血管的研究方法及当前进展 。
关键词 血管组织工程 种子细胞 生物材料 细胞培养 血管组织工程细胞 血管组织工程支架材料
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STUDY OF CULTURING CARDIOVASCULAR TISSUE IN VITRO
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作者 成少飞 叶清 《Journal of Shanghai Second Medical University(Foreign Language Edition)》 2004年第1期42-47,共6页
Objective To evaluate the feasibility of utilizing vascular cells combined with folded andframed culture model to develop completely autologous human tissue without using any scaffold material under the principles of ... Objective To evaluate the feasibility of utilizing vascular cells combined with folded andframed culture model to develop completely autologous human tissue without using any scaffold material under the principles of Tissue Engineering. Methods Human vascular cells cultured from ascending aorta (group A) and saphenous vein (group B) were seeded into 15cm-dishes (each n =12) and cultured to form cell sheets over a period of four weeks with Dulbecco's modified Eagle's medium supplemented with Immol/L L-ascorbic acid 2-phos-phate. Thereafter, cell sheets (6 samples of each group) were four-layer folded and cultured in a newly developed frame device for additional four weeks. Controls remained under standard culture conditions. Tissue development was evaluated by light and electron microscopy, biochemical assays. Results The formation of multi-layered cell sheets and production of extracellular matrix were observed in each group after the initial four weeks. Analysis of the folded and framed neo-tissue revealed a solid structure with increased matrix formation and tissue organization compared to the control groups after additional four weeks. DNA assay indicated significantly lower cell proliferation in folded and framed cell sheets than in that of unframed counterparts. Yet hydroxyproline assay demonstrated significant increase of collagen content in the framed aortic and venous derived tissues, which contained 82% and 42% that of human pericardium. Conclusion It is feasible to obtain completely autologous human cardiovascular tissue with the alternative new approach. Numerous issues including improvement of mechanical strength of neo-tissue remain to be investingated. 展开更多
关键词 tissue engineering autologous human tissue cardiovascular
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