Cited by 254Schizophrenia research and treatmentAdvanced MRI Techniques and ApplicationsMental Health and Psychiatry

Measurement of brain metabolites by 1H magnetic resonance spectroscopy in patients with schizophrenia: a systematic review and meta-analysis

Steen, R Grant, Hamer, Robert M, Lieberman, Jeffrey A·2005·Neuropsychopharmacology

Abstract

A systematic review of the literature identified 64 published English-language papers that used proton (1H) magnetic resonance spectroscopy to measure N-acetylaspartate (NAA) concurrently in healthy controls and in patients with a diagnosis of schizophrenia (SZ). A total of 1209 controls and 1256 patients have been evaluated, with 88% of studies carried out at 1.5 T field strength, and 77% of studies focused on patients with chronic SZ. There is consistent evidence that NAA is reduced in a broad range of tissues in the SZ brain. Broad consensus (> or =10 studies) is emerging that NAA levels are reduced > or =5% in hippocampus and in both cortical gray matter (GM) and white matter (WM) of the frontal lobe. There is no evidence to support a hypothesis that relative NAA levels are reduced to a different degree in frontal lobe GM and WM, nor is there robust evidence of a difference in NAA levels between patients with first-episode and chronic SZ. Study reliability may be a problem, as most studies appear to be underpowered. With simple assumptions about the inherent difference in NAA levels between patients and controls, it can be calculated that a minimum sample size of approximately 39 patients and 39 controls is required for acceptable statistical power. Only three of 64 studies included enough subjects to have 80% power to detect a 10% NAA reduction in patients, and no studies were adequately powered to detect a 5% NAA reduction with 80% power.

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Crossref · 10.1038/sj.npp.1300850

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107 of 107 references verified0 citation errors · 0 not checkable

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  • An earlier meta-analysis made clear that N-acetyl aspartate levels are reduced in patients with schizophrenia in frontal lobe gray and white matter.

    “An earlier meta-analysis made clear that N-acetyl aspartate levels are reduced in patients with schizophrenia in frontal lobe gray and white matter.60”

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Authors
Steen, R. G., Hamer, R. M., & Lieberman, J. A.
Affiliations
University of North Carolina at Chapel Hill (US)
Corresponding author
Steen, R Grant
Venue
Neuropsychopharmacology
Published
2005-08-10
Volume
30
Issue
11
Pages
1949-1962
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W1965782412
Cited by
254
References
107
Citations by year
2025: 4 · 2024: 2 · 2023: 6 · 2022: 4 · 2021: 10 · 2020: 7 · 2019: 6 · 2018: 9 · 2017: 7 · 2016: 10 · 2015: 21 · 2014: 16 · 2013: 27 · 2012: 14
FWCI
2.02
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Alliance for Research on Schizophrenia and Depression
  • Foundation of Hope for Research and Treatment of Mental Illness
  • University of North Carolina at Chapel Hill
  • National Institute of Mental Health (MH-64065, R01MH061603, P50MH064065, MH 61603)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
schizophrenia, N-acetylaspartate, brain metabolites, 1H NMR, hippocampus, frontal lobe, cortical gray matter, white matter, chronic schizophrenia, first-episode schizophrenia
MeSH terms
Aspartic Acid, Brain Chemistry, Humans, Magnetic Resonance Spectroscopy, Schizophrenia, Tritium

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