Evidence map›Paper›PMID 25593293›Full record

ArticleLearning & memory (Cold Spring Harbor, N.Y.)2015

Epac activation initiates associative odor preference memories in the rat pup.

Matthew T Grimes, Maria Powell, Sandra Mohammed Gutierrez, Andrea Darby-King, Carolyn W Harley, John H McLean

Open access · diamondAbstract read
In one paragraph

Article in Learning & memory (Cold Spring Harbor, N.Y.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed, 18 citations in OpenAlex.

  1. Review
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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

6 authors at 1 institution in 1 country.

Matthew T GrimesDivision of BioMedical Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada.
Maria PowellDivision of BioMedical Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada.
Sandra Mohammed GutierrezDivision of BioMedical Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada.
Andrea Darby-KingDivision of BioMedical Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada.
Carolyn W HarleyDepartment of Psychology, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada.
John H McLeanDivision of BioMedical Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3V6 Canada john.mclean@med.mun.ca.
Memorial University of Newfoundland · CA

Funding

Canadian Institutes of Health Research MOP 53761
6 · The paper itself

Abstract

Here we examine the role of the exchange protein directly activated by cAMP (Epac) in β-adrenergic-dependent associative odor preference learning in rat pups. Bulbar Epac agonist (8-pCPT-2-O-Me-cAMP, or 8-pCPT) infusions, paired with odor, initiated preference learning, which was selective for the paired odor. Interestingly, pairing odor with Epac activation produced both short-term (STM) and long-term (LTM) odor preference memories. Training using β-adrenergic-activation paired with odor recruited rapid and transient ERK phosphorylation consistent with a role for Epac activation in normal learning. An ERK antagonist prevented intermediate-term memory (ITM) and LTM, but not STM. Epac agonist infusions induced ERK phosphorylation in the mitral cell layer, in the inner half of the dendritic external plexiform layer, in the glomeruli and, patchily, among granule cells. Increased CREB phosphorylation in the mitral and granule cell layers was also seen. Simultaneous blockade of both ERK and CREB pathways prevented any long-term β-adrenergic activated odor preference memory, while LTM deficits associated with blocking only one pathway were prevented by stronger β-adrenergic activation. These results suggest that Epac and PKA play parallel and independent, as well as likely synergistic, roles in creating cAMP-dependent associative memory in rat pups. They further implicate a novel ERK-independent pathway in the mediation of STM by Epac.

Indexed as

AnimalsAnimals, NewbornAssociation LearningCyclic AMPCyclic AMP-Dependent Protein KinasesFemaleGuanine Nucleotide Exchange FactorsMaleMemoryMitogen-Activated Protein Kinase 1OdorantsOlfactory BulbPhosphorylationRatsRats, Sprague-DawleyReceptors, Adrenergic, beta8-(4-chloro-phenylthio)-2'-O-methyladenosine-3'-5'-cyclic monophosphateCyclic AMPCyclic AMP-Dependent Protein KinasesGuanine Nucleotide Exchange FactorsMitogen-Activated Protein Kinase 1Rapgef3 protein, ratReceptors, Adrenergic, beta

Identifiers

PMID25593293
PMCPMC4341366
OpenAlexW2125318280

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.