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The use of the regenerating frog sciatic nerve for pharmacological studies of orthograde and retrograde axonal transport

Edström, Anders LU ; Ekström, Per LU ; Kanje, Martin LU and Sjöberg, Jacob (1987) In Brain Research 401(1). p.34-42
Abstract

The outgrowth region of the regenerating frog sciatic nerve shows an increased permeability for various drugs, which has been utilized for pharmacological studies of axonal transport. Six days after a bilateral crush lesion, the nerves, including the spinal ganglia, were incubated in a compartmented chamber. Orthograde transport was assessed from the proximodistal distribution and the accumulation of labelled proteins in the nerve growth region. Retrograde transport was examined by allowing orthogradely transported materials to reverse at the regenerating region and then to accumulate at a ligature during a second incubation period. The distribution of radioactivity along the nerve was assayed by fluorography of whole-mount nerve... (More)

The outgrowth region of the regenerating frog sciatic nerve shows an increased permeability for various drugs, which has been utilized for pharmacological studies of axonal transport. Six days after a bilateral crush lesion, the nerves, including the spinal ganglia, were incubated in a compartmented chamber. Orthograde transport was assessed from the proximodistal distribution and the accumulation of labelled proteins in the nerve growth region. Retrograde transport was examined by allowing orthogradely transported materials to reverse at the regenerating region and then to accumulate at a ligature during a second incubation period. The distribution of radioactivity along the nerve was assayed by fluorography of whole-mount nerve preparations or by scintillation counting. Fluorography made it possible to increase the spatial resolution and to demonstrate effects in the elongating part of the regenerating nerve. Colchicine at low concentrations (10-100 μM) only inhibited axonal transport in the outgrowth region (6 mm long at 6 days after crush) and along some mm of the nerve proximal to the crush. Compound 48/80 (50 μg/ml), the most specific calmodulin inhibitor so far described, inhibited the transport along the same part of the nerve. Cytochalasin B (10 μg/ml) inhibited transport by effects limited to the outgrowth region. Both orthograde and retrograde transport showed sensitivity to these and some other drugs. The regenerating frog sciatic nerve seems to have significant advantages for pharmacological studies of axonal transport.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Axonal transport, Pharmacology, Regeneration
in
Brain Research
volume
401
issue
1
pages
34 - 42
publisher
Elsevier
external identifiers
  • scopus:0023088427
ISSN
0006-8993
DOI
10.1016/0006-8993(87)91160-7
language
English
LU publication?
yes
id
8ab50e02-ac5a-4e4b-a416-2692af6298b9
date added to LUP
2016-12-07 14:31:14
date last changed
2017-01-25 16:28:05
@article{8ab50e02-ac5a-4e4b-a416-2692af6298b9,
  abstract     = {<p>The outgrowth region of the regenerating frog sciatic nerve shows an increased permeability for various drugs, which has been utilized for pharmacological studies of axonal transport. Six days after a bilateral crush lesion, the nerves, including the spinal ganglia, were incubated in a compartmented chamber. Orthograde transport was assessed from the proximodistal distribution and the accumulation of labelled proteins in the nerve growth region. Retrograde transport was examined by allowing orthogradely transported materials to reverse at the regenerating region and then to accumulate at a ligature during a second incubation period. The distribution of radioactivity along the nerve was assayed by fluorography of whole-mount nerve preparations or by scintillation counting. Fluorography made it possible to increase the spatial resolution and to demonstrate effects in the elongating part of the regenerating nerve. Colchicine at low concentrations (10-100 μM) only inhibited axonal transport in the outgrowth region (6 mm long at 6 days after crush) and along some mm of the nerve proximal to the crush. Compound 48/80 (50 μg/ml), the most specific calmodulin inhibitor so far described, inhibited the transport along the same part of the nerve. Cytochalasin B (10 μg/ml) inhibited transport by effects limited to the outgrowth region. Both orthograde and retrograde transport showed sensitivity to these and some other drugs. The regenerating frog sciatic nerve seems to have significant advantages for pharmacological studies of axonal transport.</p>},
  author       = {Edström, Anders and Ekström, Per and Kanje, Martin and Sjöberg, Jacob},
  issn         = {0006-8993},
  keyword      = {Axonal transport,Pharmacology,Regeneration},
  language     = {eng},
  month        = {01},
  number       = {1},
  pages        = {34--42},
  publisher    = {Elsevier},
  series       = {Brain Research},
  title        = {The use of the regenerating frog sciatic nerve for pharmacological studies of orthograde and retrograde axonal transport},
  url          = {http://dx.doi.org/10.1016/0006-8993(87)91160-7},
  volume       = {401},
  year         = {1987},
}