Evidence map›Paper›PMID 15601946›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2004

Somatostatin receptor 2 is activated in cortical neurons and contributes to neurodegeneration after focal ischemia.

Ralf K Stumm, Chun Zhou, Stefan Schulz, Matthias Endres, Golo Kronenberg, Jeremy P Allen, Giovanni Tulipano, Volker Höllt

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 22% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
  2. Neuropeptidergic systems in psychiatric disorders.Frontiers in endocrinology · 2025
    Review
  3. Article
  4. Cell-Type-Specific Effects of Somatostatin on Synaptic Transmission in the Anterior Cingulate Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  5. Article
  6. Article
  7. Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2023
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Cortistatin, a novel cardiovascular protective peptide.Cardiovascular diagnosis and therapy · 2019
    Review
  13. Review
  14. Trans-Modulation of the Somatostatin Type 2A Receptor Trafficking by Insulin-Regulated Aminopeptidase Decreases Limbic Seizures.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Dynamics of somatostatin type 2A receptor cargoes in living hippocampal neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2008
    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 4 institutions in 3 countries.

Ralf K StummInstitute of Pharmacology and Toxicology, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany. ralf.stumm@medizin.uni-magdeburg.de
Chun Zhou
Stefan Schulz
Matthias Endres
Golo Kronenberg
Jeremy P Allen
Giovanni Tulipano
Volker Höllt
Otto-von-Guericke University Magdeburg · DEBabraham Institute · GBFranklin University · USHumboldt-Universität zu Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Somatostatin receptor 2 (SSTR2) mediates neuromodulatory signals of somatostatin and cortistatin in the cerebral cortex. Recently, SSTR2 has been shown to enhance conserved death ligand- and mitochondria-mediated apoptotic pathways in non-neuronal cells. Whether somatostatin receptors are activated in cerebrocortical neurons and contribute to neurodegeneration after experimental focal ischemia was unknown until now. Here we examined internalization of SSTR2 in a rat model of middle cerebral artery occlusion (MCAO) by confocal microscopy. At 3 and 6 hr after MCAO, SSTR2 was internalized excessively in cerebrocortical neurons adjacent to the infarct, which was prevented by intracerebroventricular application of the SSTR2-selective antagonist BIM-23627. SSTR2 internalization was associated with a transient depletion of somatostatin from axonal terminals and increased expression of SSTR2 mRNA. The initial loss of somatostatin was followed by an increase in somatostatin mRNA levels, whereas cortistatin mRNA expression was decreased. In SSTR2-deficient mice with lacZ under the control of the SSTR2 promoter, MCAO-induced upregulation of SSTR2 gene expression was less pronounced than in wild types. SSTR2-deficient mice exhibited a 40% reduction of infarct size after permanent distal MCAO and a 63% reduction after transient proximal MCAO. In summary, we provide direct evidence for activation of SSTR2 by an endogenous ligand after focal ischemia. Activation of functional SSTR2 receptors contributes to increased SSTR2 gene expression and postischemic neurodegeneration.

Indexed as

AnimalsAxonsBrain IschemiaCell LineCerebral CortexCerebral InfarctionFluorescent Antibody TechniqueHumansImmunoenzyme TechniquesIn Situ HybridizationMaleMiceMice, Inbred C57BLMice, KnockoutMicroscopy, ConfocalNerve DegenerationBIM 23627cortistatinNerve Tissue ProteinsNeuropeptidesPeptidesReceptors, SomatostatinSomatostatinsomatostatin receptor 2

Identifiers

PMID15601946
PMCPMC6730368
OpenAlexW2023822662

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.