Evidence map›Paper›PMID 19596521›Full record

ReviewPsychoneuroendocrinology2009

Estradiol and the relationship between dendritic spines, NR2B containing NMDA receptors, and the magnitude of long-term potentiation at hippocampal CA3-CA1 synapses.

Caroline C Smith, Lindsey C Vedder, Lori L McMahon

Abstract readReview
In one paragraph

Review in Psychoneuroendocrinology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
5.2field-weighted citation impact, top 4% 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

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 126 citations in OpenAlex.

  1. Pooled it
  2. Scopolamine produces larger antidepressant and antianxiety effects in women than in men.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2010
    Trial
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Metabotropic NMDAR Signaling Contributes to Sex Differences in Synaptic Plasticity and Episodic Memory.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  9. Article
  10. Review
  11. Article
  12. Sex differences in synaptic plasticity underlying learning.Journal of neuroscience research · 2023
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Estrogen receptors and the aging brain.Essays in biochemistry · 2021
    Review
  18. Article
  19. Article
  20. Review

10 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

3 authors at 1 institution in 1 country.

Caroline C SmithDepartment of Physiology and Biophysics, University of Alabama at Birmingham, 1918 University Blvd, MCLM 964, Birmingham, AL 35294, USA.
Lindsey C Vedder
Lori L McMahon
University of Alabama at Birmingham · US

Funding

Alabama Neuroscience Blueprint Core CenterP30NS057098 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ROTH, KEVIN A · 2006 to 2010
$9.5M
Muscarinic Receptor Induced LTD in Rat HippocampusR01AG021612 · NIA · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI MCMAHON, LORI LYNN · 2004 to 2015
$3.0M
Estrogen and hippocampal plasticityR01MH082304 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI MCMAHON, LORI LYNN · 2008 to 2012
$1.6M
Estrogen modulates hippocampal morphology and plasticityF31MH071085 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI COFER SMITH, CAROLINE D · 2004 to 2005
$50k
NIA NIH HHS R01 AG021612NIMH NIH HHS F31 MH071085NIMH NIH HHS F32 MH-071085NIMH NIH HHS MH-082304NIMH NIH HHS R01 MH082304NINDS NIH HHS NS-57098NINDS NIH HHS P30 NS057098
6 · The paper itself

Abstract

When circulating estrogen levels decline as a natural consequence of menopause and aging in women, there is an increased incidence of deficits in working memory. In many cases, these deficits are rescued by estrogen replacement therapy. These clinical data therefore highlight the importance of defining the biological pathways linking estrogen to the cellular substrates of learning and memory. It has been known for nearly two decades that estrogen enhances dendritic spine density on apical dendrites of CA1 pyramidal cells in hippocampus, a brain region required for learning. Interestingly, at synapses between CA3-CA1 pyramidal cells, estrogen has also been shown to enhance synaptic NMDA receptor current and the magnitude of long-term potentiation, a cellular correlate of learning and memory. Given that synapse density, NMDAR function, and long-term potentiation at CA3-CA1 synapses in hippocampus are associated with normal learning, it is likely that modulation of these parameters by estrogen facilitates the improvement in learning observed in rats, primates and humans following estrogen replacement. To facilitate the design of clinical strategies to potentially prevent or reverse the age-related decline in learning and memory during menopause, the relationship between the estrogen-induced morphological and functional changes in hippocampus must be defined and the role these changes play in facilitating learning must be elucidated. The aim of this report is to provide a summary of the proposed mechanisms by which this hormone increases synaptic function and in doing so, it briefly addresses potential mechanisms contributing to the estrogen-induced increase in synaptic morphology and plasticity, as well as important future directions.

Indexed as

AnimalsCA1 Region, HippocampalCA3 Region, HippocampalDendritic SpinesEstradiolgamma-Aminobutyric AcidGlutamic AcidLong-Term PotentiationModels, NeurologicalNeural InhibitionReceptors, N-Methyl-D-AspartateSynapsesEstradiolgamma-Aminobutyric AcidGlutamic AcidNR2B NMDA receptorReceptors, N-Methyl-D-Aspartate

Identifiers

PMID19596521
PMCPMC2796081
OpenAlexW2010569679

What OpenQuestion holds

Textmetadata
LicenceTDM
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.