Evidence map›Paper›PMID 24800899›Full record

ArticlePsychopharmacology2014

The activation of the Akt/PKB signalling pathway in the brains of clozapine-exposed rats is linked to hyperinsulinemia and not a direct drug effect.

G C Smith, H McEwen, J D Steinberg, P R Shepherd

Abstract read
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In one paragraph

Article in Psychopharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 25% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Observational
  8. Article
  9. 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

4 authors at 3 institutions in 2 countries.

G C SmithDepartment of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand, g.smith@unsw.edu.au.
H McEwen
J D Steinberg
P R Shepherd
University of Auckland · NZMaurice Wilkins Centre · NZSingapore Bioimaging Consortium · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The second generation antipsychotic drug clozapine is a much more effective therapy for schizophrenia than first generation compounds, but the reasons for this are poorly understood. We have previously shown that one distinguishing feature of clozapine is its ability to raise glucagon levels in animal models and thus causes prolonged hyperinsulinemia without inducing hypoglycaemia. Previous studies have provided evidence that defects in Akt/PKB and GSK3 signalling can contribute to development of psychiatric diseases. Clozapine is known to activate Akt/PKB in the brain, and some studies have indicated that this is due to a direct effect of the drug on the neurons. However, we provide strong evidence that elevated insulin levels induced by clozapine are in fact the real cause of the drug's effects on Akt/PKB and GSK3 in the brain. This suggests that the elevated levels of insulin induced by clozapine may contribute to this drug's therapeutic efficacy.

Indexed as

AnimalsAntipsychotic AgentsBrainClozapineGlycogen Synthase Kinase 3HyperinsulinismMaleProto-Oncogene Proteins c-aktRatsRats, Sprague-DawleySchizophreniaSignal TransductionAntipsychotic AgentsClozapineGlycogen Synthase Kinase 3Proto-Oncogene Proteins c-akt

Identifiers

PMID24800899
OpenAlexW2047356082

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.