Evidence map›Paper›PMID 18772258›Full record

ArticleLearning & memory (Cold Spring Harbor, N.Y.)2008

Different phases of long-term memory require distinct temporal patterns of PKA activity after single-trial classical conditioning.

Maximilian Michel, Ildikó Kemenes, Uli Müller, György Kemenes

Abstract read
In one paragraph

Article in Learning & memory (Cold Spring Harbor, N.Y.), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

12 citing papers in PubMed.

  1. Review
  2. Article
  3. Long-Term DL-3-Frontiers in aging neuroscience · 2018
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Critical role for protein kinase A in the acquisition of gregarious behavior in the desert locust.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Article
  9. Article
  10. Article
  11. Article
  12. 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.

Maximilian MichelDepartment of Biology and Environmental Sciences, Sussex Centre for Neuroscience, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, United Kingdom.
Ildikó Kemenes
Uli Müller
György Kemenes

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council G0400551
6 · The paper itself

Abstract

The cAMP-dependent protein kinase (PKA) is known to play a critical role in both transcription-independent short-term or intermediate-term memory and transcription-dependent long-term memory (LTM). Although distinct phases of LTM already have been demonstrated in some systems, it is not known whether these phases require distinct temporal patterns of learning-induced PKA activation. This question was addressed in a robust form of associative LTM that emerges within a matter of hours after single-trial food-reward classical conditioning in the pond snail Lymnaea stagnalis. After establishing the molecular and functional identity of the PKA catalytic subunit in the Lymnaea nervous system, we used a combination of PKA activity measurement and inhibition techniques to investigate its role in LTM in intact animals. PKA activity in ganglia involved in single-trial learning showed a short latency but prolonged increase after classical conditioning. However, while increased PKA activity immediately after training (0-10 min) was essential for an early phase of LTM (6 h), the late phase of LTM (24 h) required a prolonged increase in PKA activity. These observations indicate mechanistically different roles for PKA in recent and more remote phases of LTM, which may underpin different cellular and molecular mechanisms required for these phases.

Indexed as

AnimalsBlotting, WesternBrainConditioning, ClassicalCyclic AMP-Dependent Protein KinasesGanglia, InvertebrateImmunohistochemistryIn Situ HybridizationLymnaeaMemoryPhylogenyCyclic AMP-Dependent Protein Kinases

Identifiers

PMID18772258
PMCPMC2632788

What OpenQuestion holds

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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.