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Biological performances of collagen-based scaffolds tor vascular tissue engineering

机译:胶原基支架对血管组织工程的生物学性能

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摘要

Collagen is widely used for biomedical applications and it could represent a valid alternative scaffold material for vascular tissue engineering. In this work, reconstituted collagen films were prepared from neutralized acid-soluble solutions for subsequent haemocompatibility and cell viability performance assays. First, haemoglobin-free, thrombelastography and platelet adhesion tests were performed in order to investigate the blood contact performance. Secondly, specimens were seeded with endothelial cells and smooth muscle cells, and cell viability tests were carried out by MTT and SEM. Results show that neutralized acid-soluble type I collagen films do not enhance blood coagulation, do not alter normal viscoelastic properties of blood and slightly activate platelet adhesion and aggregation. Cell culture shows that the samples are adequate substrates to support the adhesion and proliferation of endothelial and smooth muscle cells. (c) 2005 Elsevier Ltd. All rights reserved.
机译:胶原蛋白广泛用于生物医学应用,它可以代表血管组织工程的有效替代支架材料。在这项工作中,从中和的酸溶性溶液中制备了胶原蛋白膜,用于随后的血液相容性和细胞活力性能测定。首先,进行无血红蛋白,血栓弹性描记术和血小板粘附试验,以研究血液接触性能。其次,将标本分别接种内皮细胞和平滑肌细胞,并通过MTT和SEM进行细胞活力测试。结果表明,中和的酸溶性I型胶原膜不会增强血液凝结,不会改变血液的正常粘弹性,并会轻微激活血小板的粘附和聚集。细胞培养表明,样品是支持内皮细胞和平滑肌细胞粘附和增殖的合适底物。 (c)2005 Elsevier Ltd.保留所有权利。

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