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• W2043016721 endingPage "1206" @default.
• W2043016721 startingPage "1198" @default.
• W2043016721 abstract "Cavity formation is an important obstacle impeding regeneration after spinal cord injury and bridging strategies are essential to provide physical substrate allowing axons to grow across the lesion site. In this study we evaluated effects of biodegradable tubular conduit made from poly-beta-hydroxybutyrate (PHB) scaffold with predominantly unidirectional fiber orientation and supplemented with cultured adult Schwann cells on axonal regeneration after cervical spinal cord injury in adult rats. After transplantation into the injured spinal cord, plain PHB conduit was well-integrated into posttraumatic cavity and induced modest astroglial reaction. Regenerating axons were found mainly outside the PHB with only single fibers crossing the host-graft interface. No host Schwann cells migrated into the graft. In contrast, when suspension of adult Schwann cells was added to the PHB during transplantation, neurofilament-positive axons filled the conduit and became associated with the implanted cells. Although rubrospinal fibers did not enter the PHB, numerous raphaespinal and CGRP-positive axons were found within the conduit. Modification of PHB surface with fibronectin, laminin or collagen significantly increased Schwann cell attachment and proliferation in vitro. However, transplantation of PHB conduit pre-coated with fibronectin and seeded with Schwann cells did not alter axonal growth response. The results demonstrate that a PHB scaffold promotes attachment, proliferation and survival of adult Schwann cells and supports marked axonal regeneration within the graft." @default.
• W2043016721 created "2016-06-24" @default.
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• W2043016721 date "2008-03-01" @default.
• W2043016721 modified "2023-09-23" @default.
• W2043016721 title "Biodegradable poly-β-hydroxybutyrate scaffold seeded with Schwann cells to promote spinal cord repair" @default.
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• W2043016721 doi "https://doi.org/10.1016/j.biomaterials.2007.11.033" @default.
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• W2043016721 hasPublicationYear "2008" @default.
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