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- W2148487725 abstract "Abstract Functional recovery after large excision of dorsal roots is absent because of both the limited regeneration capacity of the transected root, and the inability of regenerating sensory fibers to traverse the dorsal root entry zone. In this study, bioresorbable guidance conduits were used to repair 6‐mm dorsal root lesion gaps in rats, while neurotrophin‐encoding adenoviruses were used to elicit regeneration into the spinal cord. Polyester conduits with or without microfilament bundles were implanted between the transected ends of lumbar dorsal roots. Four weeks later, adenoviruses encoding NGF or GFP were injected into the spinal cord along the entry zone of the damaged dorsal roots. Eight weeks after injury, nerve regeneration was observed through both types of implants, but those containing microfilaments supported more robust regeneration of calcitonin gene‐related peptide (CGRP)‐positive nociceptive axons. NGF overexpression induced extensive regeneration of CGRP(+) fibers into the spinal cord from implants showing nerve repair. Animals that received conduits containing microfilaments combined with spinal NGF virus injections showed the greatest recovery in nociceptive function, approaching a normal level by 7–8 weeks. This recovery was reversed by recutting the dorsal root through the centre of the conduit, demonstrating that regeneration through the implant, and not sprouting of intact spinal fibers, restored sensory function. This study demonstrates that a combination of PNS guidance conduits and CNS neurotrophin therapy can promote regeneration and restoration of sensory function after severe dorsal root injury." @default.
- W2148487725 created "2016-06-24" @default.
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- W2148487725 date "2004-09-01" @default.
- W2148487725 modified "2023-10-15" @default.
- W2148487725 title "Functional repair after dorsal root rhizotomy using nerve conduits and neurotrophic molecules" @default.
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- W2148487725 doi "https://doi.org/10.1111/j.1460-9568.2004.03595.x" @default.
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