Evidence map›Paper›PMID 21566538›Full record

ArticleNeurosurgery2011

An evaluation of neuroplasticity and behavior after deep brain stimulation of the nucleus accumbens in an animal model of depression.

Steven M Falowski, Ashwini Sharan, Beverly A S Reyes, Carl Sikkema, Patricia Szot, Elisabeth J Van Bockstaele

Abstract read
In one paragraph

Article in Neurosurgery, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 5% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Biomarkers for Deep Brain Stimulation in Animal Models of Depression.Neuromodulation : journal of the International Neuromodulation Society · 2022
    Review
  11. Article
  12. The Entorhinal Cortex and Adult Neurogenesis in Major Depression.International journal of molecular sciences · 2021
    Review
  13. Neural Circuitry-Neurogenesis Coupling Model of Depression.International journal of molecular sciences · 2021
    Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. 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

6 authors at 2 institutions in 1 country.

Steven M FalowskiDepartment of Neurosurgery, Farber Institute for Neurosciences, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA. sfalowski@gmail.com
Ashwini Sharan
Beverly A S Reyes
Carl Sikkema
Patricia Szot
Elisabeth J Van Bockstaele
Thomas Jefferson University · USMental Illness Research, Education and Clinical Centers · US

Funding

OPIOID MODULATION OF THE COERULEO-CORTICAL PATHWAYR01DA009082 · NIDA · THOMAS JEFFERSON UNIVERSITY · PI VAN BOCKSTAELE, ELISABETH J · 2001 to 2017
$6.0M
NIDA NIH HHS R01 DA009082
6 · The paper itself

Abstract

backgroundRecent interest has demonstrated the nucleus accumbens (NAcc) as a potential target for the treatment of depression with deep brain stimulation (DBS).

objectiveTo demonstrate that DBS of the NAcc is an effective treatment modality for depression and that chemical and structural changes associated with these behavioral changes are markers of neuroplasticity.

methodsA deep brain stimulator was placed in the NAcc of male Wistar-Kyoto rats. Groups were divided into sham (no stimulation), intermittent (3 h/d for 2 weeks), or continuous (constant stimulation for 2 weeks). Exploratory and anxietylike behaviors were evaluated with the open-field test before and after stimulation. Tissue samples of the prefrontal cortex (PFC) were processed with Western blot analysis of markers of noradrenergic activity that included the noradrenergic synthesizing enzyme tyrosine hydroxylase. Analysis of tissue levels for catecholamines was achieved with high-performance liquid chromatography. Morphological properties of cortical pyramidal neurons were assessed with Golgi-Cox staining.

resultsSubjects undergoing intermittent and continuous stimulation of the NAcc exhibited an increase in exploratory behavior and reduced anxietylike behaviors. Tyrosine hydroxylase expression levels were decreased in the PFC after intermittent and continuous DBS, and dopamine and norepinephrine levels were decreased after continuous stimulation. Golgi-Cox staining indicated that DBS increased the length of apical and basilar dendrites in pyramidal neurons of the PFC.

conclusionDeep brain stimulation induces behavioral improvement in and neurochemical and morphological alterations of the PFC that demonstrate changes within the circuitry of the brain different from the target area of stimulation. This observed dendritic plasticity may underlie the therapeutic efficacy of this treatment.

Indexed as

AnimalsCatecholamine Plasma Membrane Transport ProteinsChromatography, High Pressure LiquidDeep Brain StimulationDepressionDisease Models, AnimalExploratory BehaviorGene Expression RegulationMaleNeuronal PlasticityNucleus AccumbensPrefrontal CortexPyramidal CellsRandom AllocationRatsRats, Inbred WKYCatecholamine Plasma Membrane Transport ProteinsTyrosine 3-Monooxygenase

Identifiers

PMID21566538
PMCPMC4707959
OpenAlexW1994684268

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.