Evidence map›Paper›PMID 31388931›Full record

ReviewNeurochemical research2020

The Struggle to Make CNS Axons Regenerate: Why Has It Been so Difficult?

James W Fawcett

Open access · hybridAbstract readReview
In one paragraph

Review in Neurochemical research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 2 pooled it
7.0field-weighted citation impact, top 2% 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

88 citing papers in PubMed, 2 syntheses or guidelines pooled it, 142 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Recovery of Retinal Terminal Fields after Traumatic Brain Injury: Evidence of Collateral Sprouting and Sexual Dimorphism.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  12. Vascular regeneration and blood flow recovery in glaucoma.Frontiers in cell and developmental biology · 2026
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. In vivo programming of adult pericytes aids axon regeneration by providing cellular bridges for SCI repair.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  20. Review

28 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 2 countries.

James W FawcettJohn Van Geest Centre for Brain Repair, University of Cambridge, Robinson Way, Cambridge, CB2 0PY, UK. jf108@cam.ac.uk.ORCID http://orcid.org/0000-0002-7990-4568
University of Cambridge · GB

Funding

Czech ministry of education Centre of Reconstructive Neuroscience", registration number CZ.02.1.01/0.0./0.0/15_003/0000419Medical Research Council MR/R004463/1Medical Research Council MR/R004544/1
6 · The paper itself

Abstract

Axon regeneration in the CNS is inhibited by many extrinsic and intrinsic factors. Because these act in parallel, no single intervention has been sufficient to enable full regeneration of damaged axons in the adult mammalian CNS. In the external environment, NogoA and CSPGs are strongly inhibitory to the regeneration of adult axons. CNS neurons lose intrinsic regenerative ability as they mature: embryonic but not mature neurons can grow axons for long distances when transplanted into the adult CNS, and regeneration fails with maturity in in vitro axotomy models. The causes of this loss of regeneration include partitioning of neurons into axonal and dendritic fields with many growth-related molecules directed specifically to dendrites and excluded from axons, changes in axonal signalling due to changes in expression and localization of receptors and their ligands, changes in local translation of proteins in axons, and changes in cytoskeletal dynamics after injury. Also with neuronal maturation come epigenetic changes in neurons, with many of the transcription factor binding sites that drive axon growth-related genes becoming inaccessible. The overall aim for successful regeneration is to ensure that the right molecules are expressed after axotomy and to arrange for them to be transported to the right place in the neuron, including the damaged axon tip.

Indexed as

AnimalsAxonal TransportAxonsCentral Nervous SystemHumansNerve RegenerationNeural InhibitionNeurogenesisProtein BiosynthesisAxonal transportAxon regenerationChondroitinaseChondroitin sulphate proteoglycansEpigeneticsIntegrinsNogoAPTENRabsRhoASchwann cellSignallingTrafficking

Identifiers

PMID31388931
PMCPMC6942574
OpenAlexW2966448894

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.