Evidence map›Paper›PMID 27178577›Full record

ArticleHormones and behavior2016

Inhibition of local estrogen synthesis in the hippocampus impairs hippocampal memory consolidation in ovariectomized female mice.

Jennifer J Tuscher, Julia S Szinte, Joseph R Starrett, Amanda A Krentzel, Ashley M Fortress, Luke Remage-Healey, Karyn M Frick

Open access · bronzeAbstract read
In one paragraph

Article in Hormones and behavior, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
15.9field-weighted citation impact, top 1% 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

81 citing papers in PubMed, 125 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article

21 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

7 authors at 2 institutions in 1 country.

Jennifer J TuscherDepartment of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
Julia S SzinteDepartment of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
Joseph R StarrettDepartment of Psychological and Brain Sciences and Neuroscience and Behavior Program, Center for Neuroendocrine Studies, University of Massachusetts Amherst, Amherst, MA, United States.
Amanda A KrentzelDepartment of Psychological and Brain Sciences and Neuroscience and Behavior Program, Center for Neuroendocrine Studies, University of Massachusetts Amherst, Amherst, MA, United States.
Ashley M FortressDepartment of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States.
Luke Remage-HealeyDepartment of Psychological and Brain Sciences and Neuroscience and Behavior Program, Center for Neuroendocrine Studies, University of Massachusetts Amherst, Amherst, MA, United States.
Karyn M FrickDepartment of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States. Electronic address: frickk@uwm.edu.
University of Wisconsin–Milwaukee · USUniversity of Massachusetts Amherst · US

Funding

Rapid Estrogen Signaling in Brain Circuits that Guide Complex BehaviorR01NS082179 · NINDS · UNIVERSITY OF MASSACHUSETTS AMHERST · PI LUKE R REMAGE-HEALEY · 2014 to 2026
$3.8M
Modulation of forebrain circuits by local neurosteroid productionR00NS066179 · NINDS · UNIVERSITY OF MASSACHUSETTS AMHERST · PI REMAGE-HEALEY, LUKE R · 2010 to 2012
$721k
NINDS NIH HHS R00 NS066179NINDS NIH HHS R01 NS082179
6 · The paper itself

Abstract

The potent estrogen 17β-Estradiol (E2) plays a critical role in mediating hippocampal function, yet the precise mechanisms through which E2 enhances hippocampal memory remain unclear. In young adult female rodents, the beneficial effects of E2 on memory are generally attributed to ovarian-synthesized E2. However, E2 is also synthesized in the adult brain in numerous species, where it regulates synaptic plasticity and is synthesized in response to experiences such as exposure to females or conspecific song. Although de novo E2 synthesis has been demonstrated in rodent hippocampal cultures, little is known about the functional role of local E2 synthesis in mediating hippocampal memory function. Therefore, the present study examined the role of hippocampal E2 synthesis in hippocampal memory consolidation. Using bilateral dorsal hippocampal infusions of the aromatase inhibitor letrozole, we first found that blockade of dorsal hippocampal E2 synthesis impaired hippocampal memory consolidation. We next found that elevated levels of E2 in the dorsal hippocampus observed 30min after object training were blocked by dorsal hippocampal infusion of letrozole, suggesting that behavioral experience increases acute and local E2 synthesis. Finally, aromatase inhibition did not prevent exogenous E2 from enhancing hippocampal memory consolidation, indicating that hippocampal E2 synthesis is not necessary for exogenous E2 to enhance hippocampal memory. Combined, these data are consistent with the hypothesis that hippocampally-synthesized E2 is necessary for hippocampus-dependent memory consolidation in rodents.

Indexed as

AnimalsAromatase InhibitorsEstradiolFemaleHippocampusLetrozoleMemoryMemory ConsolidationMiceMice, Inbred C57BLNeuronal PlasticityNitrilesOvariectomyRecognition, PsychologyTriazolesAromatase InhibitorsEstradiolLetrozoleNitrilesTriazolesAromataseEstradiolLetrozoleObject recognition

Identifiers

PMID27178577
PMCPMC4915975
OpenAlexW2390076498

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.