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Cited by 254

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Implantable arterial grafts from human fibroblasts and fibrin using a multi-graft pulsed flow-stretch bioreactor with noninvasive strength monitoring

Open access
Syedain, Zeeshan H., Meier, Lee A., Bjork, Jason W., Lee, Ann, Tranquillo, Robert T.·2011·Biomaterials

Abstract

Tissue-engineered arteries based on entrapment of human dermal fibroblasts in fibrin gel yield completely biological vascular grafts that possess circumferential alignment characteristic of native arteries and essential to their mechanical properties. A bioreactor was developed to condition six grafts in the same culture medium while being subjected to similar cyclic distension and transmural flow resulting from pulsed flow distributed among the graft lumens via a manifold. The lumenal pressure and circumferential stretch were noninvasively monitored and used to calculate stiffness in the range of 80-120 mmHg and then to successfully predict graft burst strength. The length of the graft was incrementally shortened during bioreactor culture to maintain circumferential alignment and achieve mechanical anisotropy comparable to native arteries. After 7-9 weeks of bioreactor culture, the fibrin-based grafts were extensively remodeled by the fibroblasts into circumferentially-aligned tubes of collagen and other extracellular matrix with burst pressures in the range of 1400-1600 mmHg and compliance comparable to native arteries. The tissue suture retention force was also suitable for implantation in the rat model and, with poly(lactic acid) sewing rings entrapped at both ends of the graft, also in the ovine model. The strength achieved with a biological scaffold in such a short duration is unprecedented for an engineered artery.

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Metadata

Authors
Syedain, Z. H., Meier, L. A., Bjork, J. W., Lee, A., & Tranquillo, R. T.
Venue
Biomaterials
Publisher
Elsevier BV
Published
2011-01
Volume
32
Issue
3
Pages
714-722
ISSN
0142-9612 (ISSN-L)
OpenAlex
W1996481646
Cited by
254
References
29
FWCI
12.11
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Implantable arterial grafts from human fibroblasts and fibrin using a multi-graft pulsed flow-stretch bioreactor with noninvasive strength monitoring. https://app.cochat.ai/papers/10.1016/j.biomaterials.2010.09.019
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Syedain, Z. H., Meier, L. A., Bjork, J. W., Lee, A., & Tranquillo, R. T. (2011). Implantable arterial grafts from human fibroblasts and fibrin using a multi-graft pulsed flow-stretch bioreactor with noninvasive strength monitoring. Biomaterials. https://doi.org/10.1016/j.biomaterials.2010.09.019

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