Evidence map›Paper›PMID 21525860›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2011

Resting glutamate levels and rapid glutamate transients in the prefrontal cortex of the Flinders Sensitive Line rat: a genetic rodent model of depression.

Kevin N Hascup, Erin R Hascup, Michelle L Stephens, Paul E A Glaser, Takashi Yoshitake, Aleksander A Mathé, Greg A Gerhardt, Jan Kehr

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

28 citing papers in PubMed, 51 citations in OpenAlex.

  1. Review
  2. Review
  3. Amyloid-βScientific reports · 2022
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  10. Calcineurin/NFAT Signaling in Activated Astrocytes Drives Network Hyperexcitability in Aβ-Bearing Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  11. Enhanced Cognition and Hypoglutamatergic Signaling in a Growth Hormone Receptor Knockout Mouse Model of Successful Aging.The journals of gerontology. Series A, Biological sciences and medical sciences · 2017
    Article
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  17. Review
  18. Synaptic abnormalities in the infralimbic cortex of a model of congenital depression.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  19. Article
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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

8 authors at 2 institutions in 2 countries.

Kevin N HascupDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Erin R Hascup
Michelle L Stephens
Paul E A Glaser
Takashi Yoshitake
Aleksander A Mathé
Greg A Gerhardt
Jan Kehr
Karolinska Institutet · SEUniversity of Kentucky · US

Funding

Neurochem Chip: Methodology to Study Untethered RatsR01DA017186 · NIDA · UNIVERSITY OF KENTUCKY · PI GERHARDT, GREG A. · 2003 to 2007
$2.0M
NIDA NIH HHS DA017186NIDA NIH HHS R01 DA017186
6 · The paper itself

Abstract

Despite the numerous drugs targeting biogenic amines for major depressive disorder (depression), the search for novel therapeutics continues because of their poor response rates (~30%) and slow onset of action (2-4 weeks). To better understand role of glutamate in depression, we used an enzyme-based microelectrode array (MEA) that was selective for glutamate measures with fast temporal (2 Hz) and high spatial (15 × 333 μm) resolution. These MEAs were chronically implanted into the prefrontal cortex of 3- to 6-month-old and 12- to 15-month-old Flinders Sensitive Line (FSL) and control Flinders Resistant Line (FRL) rats, a validated genetic rodent model of depression. Although no changes in glutamate dynamics were observed between 3 and 6 months FRL and FSL rats, a significant increase in resting glutamate levels was observed in the 12- to 15-month-old FSL rats compared with the 3- to 6-month-old FSL and age-matched FRL rats on days 3-5 post-implantation. Our MEA also recorded, for the first time, a unique phenomenon in all the four rat groups of fluctuations in resting glutamate, which we have termed glutamate transients. Although these events lasted only for seconds, they did occur throughout the testing paradigm. The average concentration of these glutamate-burst events was significantly increased in the 12- to 15-month-old FSL rats compared with 3- to 6-month-old FSL and age-matched FRL rats. These studies lay the foundation for future studies of both tonic and phasic glutamate signaling in rat models of depression to better understand the potential role of glutamate signaling in depression.

Indexed as

Disease Models, AnimalAge FactorsAnimalsDepressionGlutamic AcidMaleMicrodialysisPrefrontal CortexRatsRats, Mutant StrainsRestTime FactorsGlutamic Acid

Identifiers

PMID21525860
PMCPMC3138656
OpenAlexW2105434751

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.