ArticleJournal of psychiatry & neuroscience : JPN
A multimodal neuroimaging study investigating resting-state connectivity, glutamate and GABA at 7 T in first-episode psychosis.
Article in Journal of psychiatry & neuroscience : JPN. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 20 citations in OpenAlex.
- Higher-order functional brain networks and anterior cingulate glutamate + glutamine (Glx) in antipsychotic-naïve first episode psychosis patients.Translational psychiatry · 2024Trial
- Subacute changes in brain functional network connectivity after nocturnal sodium oxybate intake are associated with anterior cingulate GABA.Cerebral cortex (New York, N.Y. : 1991) · 2023Trial
- Network functional connectivity and anterior cingulate cortex gamma-aminobutyric acid in antipsychotic medication-naïve first-episode psychosis patients.Psychological medicine · 2026Article
- A Longitudinal Assessment of Anterior Cingulate Cortex Gamma-aminobutyric Acid in Antipsychotic Medication-naïve First Episode Psychosis Patients.Schizophrenia bulletin · 2026Article
- Glutamate, Contextual Insensitivity, and Disorganized Speech in First-Episode Schizophrenia: A 7T Magnetic Resonance Spectroscopy Study.Biological psychiatry global open science · 2025Article
- Cell-type specific reductions in interneuron gene expression within the cingulate gyrus of schizophrenia and bipolar disorder subjects.Schizophrenia (Heidelberg, Germany) · 2025Article
- Changes in glutamate levels in anterior cingulate cortex following 16 weeks of antipsychotic treatment in antipsychotic-naïve first-episode psychosis patients.Psychological medicine · 2025Article
- Digital psychiatry: concepts, framework, and implications.Frontiers in psychiatry · 2025Review
- Leveraging ultra-high field (7T) MRI in psychiatric research.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Review
- Discovery of early schizophrenia through neuroimaging.Psychiatry research · 2023Article
- Association of default-mode network neurotransmitters and inter-network functional connectivity in first episode psychosis.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023Article
- The neurobiology of misophonia and implications for novel, neuroscience-driven interventions.Frontiers in neuroscience · 2022Review
- The Bayesian brain and cooperative communication in schizophrenia.Journal of psychiatry & neuroscience : JPNArticle
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundThe major excitatory and inhibitory neurometabolites in the brain, glutamate and γ-aminobutyric acid (GABA), respectively, are related to the functional MRI signal. Disruption of resting-state functional MRI signals has been reported in psychosis spectrum disorders, but few studies have investigated the role of these metabolites in this context.
methodsWe included 19 patients with first-episode psychosis and 21 healthy controls in this combined magnetic resonance spectroscopy (MRS) and resting-state functional connectivity study. All imaging was performed on a Siemens Magnetom 7 T MRI scanner. Both the MRS voxel and the seed for functional connectivity analysis were located in the dorsal anterior cingulate cortex (ACC). We used multiple regressions to test for an interaction between ACC brain connectivity, diagnosis and neurometabolites.
resultsACC brain connectivity was altered in first-episode psychosis. The relationship between ACC glutamate and ACC functional connectivity differed between patients with first-episode psychosis and healthy controls in the precuneus, retrosplenial cortex, supramarginal gyrus and angular gyrus. As well, the relationship between ACC GABA and ACC functional connectivity differed between groups in the caudate, putamen and supramarginal gyrus. LIMITATIONS: We used a small sample size. As well, although they were not chronically medicated, all participants were medicated during the study.
conclusionWe demonstrated a link between the major excitatory and inhibitory brain metabolites and resting-state functional connectivity in healthy participants, as well as an alteration in this relationship in patients with first-episode psychosis. Combining data from different imaging modalities may help our mechanistic understanding of the relationship between major neurometabolites and brain network dynamics, and shed light on the pathophysiology of first-episode psychosis.
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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.