Abstract
To accelerate the fabrication of thick-walled autologous tissue-engineered vascular grafts (TEVGs), a novel biotube inserting technique was developed. After 2 weeks of subcutaneous embedding in rabbits, silicone rods (diameter, 3 mm; length, 35 mm) became encapsulated in connective tissues. Single-layered biotubes were obtained after removing the silicone rods. One silicone rod encapsulated in tissues was inserted into a single-layered biotube to form two layers of autologous tubular tissues. Three layers of autologous tubular tissues were also obtained by applying the same technique. Following a 2-week re-embedding procedure, two layers or three layers of autologous tubular tissues were integrated to form two-layered or three-layered TEVGs. Both wall thickness and burst pressure of three-layered TEVGs were significantly higher than those of two-layered and single-layered TEVGs (P < 0.05). The two-layered TEVGs could be applied as small-caliber vascular grafts, and three-layered TEVGs could be applied as medium- or large-caliber vascular grafts.
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This work was supported by a grant from Science and Technology Committee of Shanghai (09JC1410400).
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Ma, N., Wang, Z., Chen, H. et al. Development of the novel biotube inserting technique for acceleration of thick-walled autologous tissue-engineered vascular grafts fabrication. J Mater Sci: Mater Med 22, 1037–1043 (2011). https://doi.org/10.1007/s10856-011-4257-z
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DOI: https://doi.org/10.1007/s10856-011-4257-z