Evidence map›Paper›PMID 15548654›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2004

Memory-like alterations in Aplysia axons after nerve injury or localized depolarization.

Ramal M S Weragoda, Elisa Ferrer, Edgar T Walters

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Article
  5. MNK-eIF4E signalling is a highly conserved mechanism for sensory neuron axonal plasticity: evidence fromPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  6. Evolution of mechanisms and behaviour important for pain.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Squid have nociceptors that display widespread long-term sensitization and spontaneous activity after bodily injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  18. Massed training-induced intermediate-term operant memory in aplysia requires protein synthesis and multiple persistent kinase cascades.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  19. RNA binding proteins accumulate at the postsynaptic density with synaptic activity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  20. 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

3 authors.

Ramal M S WeragodaDepartment of Integrative Biology and Pharmacology, University of Texas-Houston Medical School, Houston, Texas 77030, USA.
Elisa Ferrer
Edgar T Walters

Funding

PRIMITIVE FOUNDATIONS OF NEUROPATHIC HYPERALGESIAR01NS035979 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI WALTERS, EDGAR T. · 1997 to 2009
$3.3M
TRAINING IN NEUROSCIENCET32NS007467 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI WAXHAM, M. NEAL · 1999 to 2008
$990k
NINDS NIH HHS NS35979NINDS NIH HHS R01 NS035979NINDS NIH HHS T32 NS007467NINDS NIH HHS T32-NS07467
6 · The paper itself

Abstract

Adaptive, long-term alterations of excitability have been reported in dendrites and presynaptic terminals but not along axons. Persistent enhancement of axonal excitability has been described in proximal nerve stumps at sites of nerve section in mammals, but this hyperexcitability is considered a pathological derangement important only as a cause of neuropathic pain. Identified neurons in Aplysia were used to test the hypothesis that either axonal injury or the focal depolarization that accompanies axonal injury can trigger a local decrease in action potential threshold [long-term hyperexcitability (LTH)] having memory-like properties. Nociceptive tail sensory neurons and a giant secretomotor neuron, R2, exhibited localized axonal LTH lasting 24 hr after a crush of the nerve or connective that severed the tested axons. Axons of tail sensory neurons and tail motor neurons, but not R2, displayed similar localized LTH after peripheral depolarization produced by 2 min exposure to elevated extracellular [K(+)]. Neither the induction nor expression of either form of LTH was blocked by saline containing 1% normal [Ca(2+)] during treatment or testing. However, both were prevented by local application of the protein synthesis inhibitors anisomycin or rapamycin. The features of (1) long-lasting alteration by localized depolarization, (2) restriction of alterations to intensely depolarized regions, and (3) dependence of the alterations on local, rapamycin-sensitive protein synthesis are shared with synaptic mechanisms considered important for memory formation. This commonality suggests that relatively simple, accessible axons may offer an opportunity to define fundamental plasticity mechanisms that were important in the evolution of memory.

Indexed as

Action PotentialsAnimalsAnisomycinAplysiaAxonsAxotomyExtracellular FluidGanglia, InvertebrateIn Vitro TechniquesMemoryMotor NeuronsNeurons, AfferentPeripheral NervesPotassiumProtein Synthesis InhibitorsSirolimusAnisomycinPotassiumProtein Synthesis InhibitorsSirolimus

Identifiers

PMID15548654
PMCPMC6730315

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.