Evidence map›Paper›PMID 16970940›Full record

ArticleExperimental neurology2007

Chondroitinase applied to peripheral nerve repair averts retrograde axonal regeneration.

James B Graham, Debbie Neubauer, Qing-Shan Xue, David Muir

Open access · greenAbstract read
In one paragraph

Article in Experimental neurology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.9field-weighted citation impact, top 33% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Glial Cell Line-Derived Neurotrophic Factor and Chondroitinase Promote Axonal Regeneration in a Chronic Denervation Animal Model.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2019
    Article
  7. Article
  8. Article
  9. Tissue engineered constructs for peripheral nerve surgery.European surgery : ACA : Acta chirurgica Austriaca · 2013
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

James B GrahamDepartment of Pediatrics, Neurology Division and the McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL 32610-0296, USA.
Debbie Neubauer
Qing-Shan Xue
David Muir
Florida College · USUniversity of Florida · US

Funding

ENZYMATIC DE-INHIBITION OF AXONAL REGENERATIONR01NS037901 · NINDS · UNIVERSITY OF FLORIDA · PI MUIR, DAVID F · 1999 to 2003
$1.3M
NINDS NIH HHS NS37901NINDS NIH HHS R01 NS037901NINDS NIH HHS R01 NS037901-04NINDS NIH HHS R01 NS037901-05
6 · The paper itself

Abstract

Antegrade, target-directed axonal regeneration is the explicit goal of nerve repair. However, aberrant and dysfunctional regrowth is commonly observed as well. At the site of surgical nerve coaptation, axonal sprouts encounter fibrotic connective tissue rich in growth-inhibiting chondroitin sulfate proteoglycan that may contribute to misdirection of axonal regrowth. In the present study, we tested the hypothesis that degradation of chondroitin sulfate proteoglycan by application of chondroitinase at the site of nerve repair can decrease aberrant axonal growth. Adult rats received bilateral sciatic nerve transection and end-to-end repair. One nerve was injected with chondroitinase ABC and the contralateral nerve treated with vehicle alone. After 28 weeks, retrograde axonal regeneration was assessed proximal to the repair by scoring neurofilament-immunopositive axons within the nerve (intrafascicular) and outside the nerve proper (extrafascicular). Intrafascicular retrograde axonal growth was equivalent in both control and chondroitinase treatment conditions. In contrast, chondroitinase treatment caused a pronounced (93%) reduction in extrafascicular retrograde axonal growth. The decrease in axon egress from the nerve was coincident with an increase in antegrade regeneration and improved recovery of motor function. Based on these findings, we conclude that chondroitinase applied at the site of nerve transection repair averts dysfunctional extrafascicular retrograde axonal growth.

Indexed as

Peripheral Nerve InjuriesAnimalsChondroitinases and Chondroitin LyasesChondroitin Sulfate ProteoglycansDisease Models, AnimalFemaleGrowth ConesGrowth InhibitorsMotor NeuronsNerve RegenerationNeurons, AfferentPeripheral NervesRatsRats, Sprague-DawleyRetrograde DegenerationSciatic NeuropathyChondroitinases and Chondroitin LyasesChondroitin Sulfate ProteoglycansGrowth Inhibitors

Identifiers

PMID16970940
PMCPMC1851897
OpenAlexW1966293570

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.