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Reorganization and orientation of regenerating nerve fibres, perineurium, and epineurium in preformed mesothelial tubes - an experimental study on the sciatic nerve of rats

Lundborg, G LU ; Dahlin, L B LU ; Danielsen, N P LU ; Hansson, H A LU and Larsson, K LU (1981) In Journal of Neuroscience Research 6(3). p.81-265
Abstract

Regeneration of severed peripheral nerves is unfortunately often incomplete, due to loss of nerve fibers and neuroma formation. A new approach is presented with the intention of improving the conditions for nerve repair. In the first of the two stages, a pseudosynovial tube is formed around a silicone rubber rod, surrounded by a stainless steel spiral, which was placed in the backs of rats. This tube, in the second stage, is used as a free "tube graft" to bridge gaps of about 10-12 mm lengths in the severed sciatic nerve. The tube was kept open by the metal spiral. Regenerating nerve fibers with their sprouts grew into the initially open space in the tube. A new nerve trunk was formed, comprised of closely packed myelinated and... (More)

Regeneration of severed peripheral nerves is unfortunately often incomplete, due to loss of nerve fibers and neuroma formation. A new approach is presented with the intention of improving the conditions for nerve repair. In the first of the two stages, a pseudosynovial tube is formed around a silicone rubber rod, surrounded by a stainless steel spiral, which was placed in the backs of rats. This tube, in the second stage, is used as a free "tube graft" to bridge gaps of about 10-12 mm lengths in the severed sciatic nerve. The tube was kept open by the metal spiral. Regenerating nerve fibers with their sprouts grew into the initially open space in the tube. A new nerve trunk was formed, comprised of closely packed myelinated and unmyelinated axons, organized into fascicles. Demonstration by electron microscopy and by EMG recording of reinnervation of foot muscles supported successful long-term results. The fascicles were delimited by perineurial and epineurial sheaths and, furthermore, showed signs of maturation. It was also demonstrated that the nerve-fiber regeneration ceased after a few weeks if there was no distal nerve inserted into the tube. The importance of optimizing the interaction between local factors and regenerating nerve fibers for reestablishment of functionally valuable motor units is discussed.

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organization
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Contribution to journal
publication status
published
subject
keywords
Animals, Electromyography, Microscopy, Electron, Nerve Fibers, Nerve Regeneration, Peripheral Nerves, Rats, Rats, Inbred Strains, Sciatic Nerve, Time Factors, Journal Article, Research Support, Non-U.S. Gov't
in
Journal of Neuroscience Research
volume
6
issue
3
pages
81 - 265
publisher
John Wiley & Sons
external identifiers
  • scopus:0019393371
ISSN
0360-4012
DOI
10.1002/jnr.490060302
language
English
LU publication?
yes
id
8e29b9f2-fa57-4023-ba21-23f772eec13f
date added to LUP
2017-10-13 14:10:57
date last changed
2017-10-16 10:30:48
@article{8e29b9f2-fa57-4023-ba21-23f772eec13f,
  abstract     = {<p>Regeneration of severed peripheral nerves is unfortunately often incomplete, due to loss of nerve fibers and neuroma formation. A new approach is presented with the intention of improving the conditions for nerve repair. In the first of the two stages, a pseudosynovial tube is formed around a silicone rubber rod, surrounded by a stainless steel spiral, which was placed in the backs of rats. This tube, in the second stage, is used as a free "tube graft" to bridge gaps of about 10-12 mm lengths in the severed sciatic nerve. The tube was kept open by the metal spiral. Regenerating nerve fibers with their sprouts grew into the initially open space in the tube. A new nerve trunk was formed, comprised of closely packed myelinated and unmyelinated axons, organized into fascicles. Demonstration by electron microscopy and by EMG recording of reinnervation of foot muscles supported successful long-term results. The fascicles were delimited by perineurial and epineurial sheaths and, furthermore, showed signs of maturation. It was also demonstrated that the nerve-fiber regeneration ceased after a few weeks if there was no distal nerve inserted into the tube. The importance of optimizing the interaction between local factors and regenerating nerve fibers for reestablishment of functionally valuable motor units is discussed.</p>},
  author       = {Lundborg, G and Dahlin, L B and Danielsen, N P and Hansson, H A and Larsson, K},
  issn         = {0360-4012},
  keyword      = {Animals,Electromyography,Microscopy, Electron,Nerve Fibers,Nerve Regeneration,Peripheral Nerves,Rats,Rats, Inbred Strains,Sciatic Nerve,Time Factors,Journal Article,Research Support, Non-U.S. Gov't},
  language     = {eng},
  number       = {3},
  pages        = {81--265},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Neuroscience Research},
  title        = {Reorganization and orientation of regenerating nerve fibres, perineurium, and epineurium in preformed mesothelial tubes - an experimental study on the sciatic nerve of rats},
  url          = {http://dx.doi.org/10.1002/jnr.490060302},
  volume       = {6},
  year         = {1981},
}