Resorbable filament structures as a scaffold for matrix formation and axonal growth in bioartificial nerve grafts: Long term observations

Nobuki Terada, Lars M. Bjursten, Michaël Papaloïzos, Göran Lundborg

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Gaps, 10 mm wide, in rat sciatic nerves were bridged by bioartificial nerve grafts consisting of a silicone tube containing seven longitudinally placed synthetic filaments, which were expected to serve as a scaffold for axonal growth. The filaments were made of non-resorbable material (polyamide [Ethilon®]) or resorbable material (polydioxanon [PDS®], polyglactin [Vicryl] or catgut). The purpose was to study the influence of resorbable materials on axonal regeneration and to choose, in the long term, the best filament material among the four. After 3 and 6 months, histological techniques were used to study the regenerated nerve structure. The total axon number in the nerve segment distal to the silicone chamber was counted in all specimens at 6 months. The histological findings were different depending on the filament materials; all the three resorbable materials showing significantly larger numbers of axons than polyamide (non-resorbable). All materials were covered with several layers of more or' less flattened cells. These results indicate that resorbable filaments are superior to non-resorbable filaments when used as a scaffold inside a silicone tube, and polyglactin seems ideal for this purpose.

Original languageEnglish
Pages (from-to)65-69
Number of pages5
JournalRestorative Neurology and Neuroscience
Volume11
Issue number1-2
Publication statusPublished - 01-04-1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Neurology
  • Developmental Neuroscience
  • Clinical Neurology

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