Biofabrication and testing of a fully cellular nerve graft.
Biofabrication and testing of a fully cellular nerve graft.
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全细胞神经移植物的生物制作和测试。
DOI:
10.1088/1758-5082/5/4/045007
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发表时间:
2013-12
期刊:
影响因子:
9
通讯作者:
Heesch CM
中科院分区:
文献类型:
--
作者:
Owens CM;Marga F;Forgacs G;Heesch CM
Rupture of a nerve is a debilitating injury with devastating consequences for the individual’s quality of life. The gold standard of repair is the use of an autologous graft to bridge the severed nerve ends. Such repair however involves risks due to secondary surgery at the donor site and may result in morbidity and infection. Thus the clinical approach to repair often involves non-cellular solutions, grafts composed of synthetic or natural materials. Here we report on a novel approach to biofabricate fully biological grafts composed exclusively of cells and cell secreted material. To reproducibly and reliably build such grafts of composite geometry we use bioprinting. We test our grafts in a rat sciatic nerve injury model for both motor and sensory function. In particular we compare the regenerative capacity of the biofabricated grafts with that of autologous grafts and grafts made of hollow collagen tubes by measuring the compound action potential (for motor function) and the change in mean arterial blood pressure as consequence of electrically eliciting the somatic pressor reflex. Our results provide evidence that bioprinting is a promising approach to nerve graft fabrication and as a consequence to nerve regeneration.
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通讯作者:
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通讯作者:
Weir, AI