Evidence map›Paper›PMID 21245212›Full record

ArticleLearning & memory (Cold Spring Harbor, N.Y.)2011

PKG-mediated MAPK signaling is necessary for long-term operant memory in Aplysia.

Maximilian Michel, Charity L Green, Arnold Eskin, Lisa C Lyons

Open access · diamondAbstract read
In one paragraph

Article in Learning & memory (Cold Spring Harbor, N.Y.), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
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  6. Postsynaptic effects ofLearning & memory (Cold Spring Harbor, N.Y.) · 2020
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  8. Successful and unsuccessful attempts to swallow in a reducedLearning & memory (Cold Spring Harbor, N.Y.) · 2019
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  20. Synchrony and desynchrony in circadian clocks: impacts on learning and memory.Learning & memory (Cold Spring Harbor, N.Y.) · 2015
    Review
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.

Maximilian MichelDepartment of Biological Science, Program in Neuroscience, Florida State University, Tallahassee, FL 32306, USA.
Charity L Green
Arnold Eskin
Lisa C Lyons
University of Houston · USFlorida State University · US

Funding

Circadian Modulation of Long-term Memory FormationR01NS050589 · NINDS · UNIVERSITY OF HOUSTON · PI ESKIN, ARNOLD NONE · 2004 to 2007
$1.2M
Signaling and Circadian Modulation Regulating Associative Memory in AplysiaR01MH081012 · NIMH · FLORIDA STATE UNIVERSITY · PI LYONS, LISA CARLSON · 2007 to 2010
$1.1M
NIMH NIH HHS MH081012NIMH NIH HHS R01 MH081012NINDS NIH HHS NS050589NINDS NIH HHS R01 NS050589
6 · The paper itself

Abstract

Signaling pathways necessary for memory formation, such as the mitogen-activated protein kinase (MAPK) pathway, appear highly conserved across species and paradigms. Learning that food is inedible (LFI) represents a robust form of associative, operant learning that induces short- (STM) and long-term memory (LTM) in Aplysia. We investigated the role of MAPK signaling in LFI memory in vivo. Inhibition of MAPK activation in animals prior to training blocked STM and LTM. Discontinuing MAPK signaling immediately after training inhibited LTM with no impact on STM. Therefore, MAPK signaling appears necessary early in memory formation for STM and LTM, with prolonged MAPK activity required for LTM. We found that LFI training significantly increased phospho-MAPK levels in the buccal ganglia. Increased MAPK activation was apparent immediately after training with greater than basal levels persisting for 2 h. We examined the mechanisms underlying training-induced MAPK activation and found that PKG activity was necessary for the prolonged phase of MAPK activation, but not for the early MAPK phase required for STM. Furthermore, we found that neither the immediate nor the prolonged phase of MAPK activation was dependent upon nitric oxide (NO) signaling, although expression of memory was dependent on NO as previously reported. These studies emphasize the role of MAPK and PKG in negatively reinforced operant memory and demonstrate a role for PKG-dependent MAPK signaling in invertebrate associative memory.

Indexed as

AnimalsAplysiaBlotting, WesternConditioning, OperantCyclic GMP-Dependent Protein KinasesMAP Kinase Signaling SystemMemory, Long-TermMemory, Short-TermMitogen-Activated Protein KinasesNeuronal PlasticityCyclic GMP-Dependent Protein KinasesMitogen-Activated Protein Kinases

Identifiers

PMID21245212
PMCPMC3032575
OpenAlexW2111611651

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.