Evidence map›Paper›PMID 22981426›Full record

SynthesisPsychiatry research

Neurometabolites in schizophrenia and bipolar disorder - a systematic review and meta-analysis.

Nina Vanessa Kraguljac, Meredith Reid, David White, Rebecca Jones, Jan den Hollander, Deborah Lowman, Adrienne Carol Lahti

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Psychiatry research. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed, 5 pooled it
11.7field-weighted citation impact, top 1% 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

104 citing papers in PubMed, 5 syntheses or guidelines pooled it, 200 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Trial
  7. Trial
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  10. Ventral tegmental area/midbrain functional connectivity and response to antipsychotic medication in schizophrenia.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    Trial
  11. Reduced prefrontal total choline MRS levels characterize the neurodevelopmental phenotype of bipolar disorder.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Mitochondrial Oxidative Phosphorylation System Dysfunction in Schizophrenia.International journal of molecular sciences · 2025
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

44 more citing papers are in PubMed but not listed here.

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

7 authors at 1 institution in 1 country.

Nina Vanessa KraguljacDepartment of Psychiatry and Behavioral Neurobiology, University of Alabama, Birmingham, AL, USA. nkraguljac@uab.edu
Meredith Reid
David White
Rebecca Jones
Jan den Hollander
Deborah Lowman
Adrienne Carol Lahti
University of Alabama at Birmingham · US

Funding

Treatment response in schizophrenia: bridging imaging and postmortem studiesR01MH081014 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LAHTI, ADRIENNE C · 2009 to 2013
$1.8M
NIMH NIH HHS R01 MH081014NIMH NIH HHS R01MH081014PHS HHS R01 NCI141663
6 · The paper itself

Abstract

This meta-analysis evaluates alterations of neurometabolites in schizophrenia and bipolar disorder. PubMed was searched to find controlled studies evaluating N-acetylaspartate (NAA), Choline (Cho) and Creatine (Cr) assessed with ((1))H-MRS (proton magnetic resonance spectroscopy) in patients with schizophrenia and bipolar disorder up to September 2010. Random effects meta-analyses were conducted to estimate pooled standardized mean differences. The statistic was used to quantify inconsistencies. Subgroup analyses were conducted to explore potential explanations for inconsistencies. The systematic review included 146 studies with 5643 participants. NAA levels were affected in schizophrenia and bipolar disorder. Decreased levels in the basal ganglia and frontal lobe were the most consistent findings in schizophrenia; decreased levels in the basal ganglia were the most consistent findings in bipolar disorder. Cho and Cr levels were not altered in either disorder. Findings for Cr were most consistent in the thalamus, frontal lobe and dorsolateral prefrontal cortex in schizophrenia and the basal ganglia and frontal lobe in bipolar disorder. Findings for Cho were most consistent in the thalamus, frontal lobe and anterior cingulate cortex in schizophrenia and basal ganglia in bipolar disorder. Large, carefully designed studies are needed to better estimate the extent of alterations in neurometabolites.

Indexed as

Magnetic Resonance SpectroscopySchizophrenic PsychologyAspartic AcidBasal GangliaBipolar DisorderCholineCreatineGyrus CinguliHumansPrefrontal CortexReference ValuesSchizophreniaThalamusAspartic AcidCholineCreatineN-acetylaspartate

Identifiers

PMID22981426
PMCPMC3466386
OpenAlexW1992675137

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.