Evidence map›Paper›PMID 26597361›Full record

ArticleBrain structure & function2016

Fornix deep brain stimulation enhances acetylcholine levels in the hippocampus.

Sarah Hescham, Ali Jahanshahi, Judith V Schweimer, Stephen N Mitchell, Guy Carter, Arjan Blokland, Trevor Sharp, Yasin Temel

Open access · hybridAbstract read
In one paragraph

Article in Brain structure & function, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Prelimbic Cortical Stimulation Improves Spatial Memory Through Distinct Patterns of Hippocampal Gene Expression in Aged Rats.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2020
    Article
  11. The effect of fornix deep brain stimulation in brain diseases.Cellular and molecular life sciences : CMLS · 2020
    Review
  12. Review
  13. Review
  14. Review
  15. Deep brain stimulation: potential for neuroprotection.Annals of clinical and translational neurology · 2019
    Review
  16. Article
  17. Article
  18. Deep brain stimulation for Alzheimer's Disease: An update.Surgical neurology international · 2018
    Review
  19. Article
  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

8 authors at 5 institutions in 2 countries.

Sarah HeschamDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands. sarah.hescham@maastrichtuniversity.nl.
Ali JahanshahiDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Judith V SchweimerUniversity Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK.
Stephen N MitchellEli Lilly and Company Ltd., Windlesham, GU20 6PH, UK.
Guy CarterEli Lilly and Company Ltd., Windlesham, GU20 6PH, UK.
Arjan BloklandDepartment of Neuropsychology and Psychopharmacology, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands.
Trevor SharpUniversity Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK.
Yasin TemelDepartment of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands. y.temel@maastrichtuniversity.nl.
Eli Lilly (United Kingdom) · GBMaastricht University · NLUniversity of Oxford · GBEuropean Graduate School of Neuroscience · NLMaastricht University Medical Centre · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Deep brain stimulation (DBS) of the fornix has gained interest as a potential therapy for advanced treatment-resistant dementia, yet the mechanism of action remains widely unknown. Previously, we have reported beneficial memory effects of fornix DBS in a scopolamine-induced rat model of dementia, which is dependent on various brain structures including hippocampus. To elucidate mechanisms of action of fornix DBS with regard to memory restoration, we performed c-Fos immunohistochemistry in the hippocampus. We found that fornix DBS induced a selective activation of cells in the CA1 and CA3 subfields of the dorsal hippocampus. In addition, hippocampal neurotransmitter levels were measured using microdialysis before, during and after 60 min of fornix DBS in a next experiment. We observed a substantial increase in the levels of extracellular hippocampal acetylcholine, which peaked 20 min after stimulus onset. Interestingly, hippocampal glutamate levels did not change compared to baseline. Therefore, our findings provide first experimental evidence that fornix DBS activates the hippocampus and induces the release of acetylcholine in this region.

Indexed as

AcetylcholineAnimalsDeep Brain StimulationFornix, BrainGlutamic AcidHippocampusMaleNeuronsProto-Oncogene Proteins c-fosRatsRats, Sprague-DawleyAcetylcholineGlutamic AcidProto-Oncogene Proteins c-fosAcetylcholineDeep brain stimulationFornixHippocampusMemory

Identifiers

PMID26597361
PMCPMC5065894
OpenAlexW2178858574

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.