ArticleActa neuropsychiatrica2025
MR spectroscopic imaging and its association with EEG, CSF, and psychometric/neuropsychological findings in patients with suspected autoimmune psychosis spectrum syndromes.
Article in Acta neuropsychiatrica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Functional Brain Activity Associated With Intermittent Rhythmic Delta/Theta Activity: A Transdiagnostic Electroencephalography-Functional Magnetic Resonance Imaging Resting-State Study.Biological psychiatry global open science · 2026Article
- Multi-voxel MR-spectroscopy signatures and associations with EEG network hyperexcitability and clinical symptomatology in borderline personality disorder.Frontiers in psychiatry · 2026Article
- Alterations in functional connectivity analyzed using MREG in patients with suspected autoimmune psychosis spectrum syndromes.Brain, behavior, & immunity - health · 2025Article
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Authors and funding
15 authors.
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No grant is acknowledged in the PubMed record.
Abstract
introductionAutoimmune psychosis (AP) and other autoimmune psychiatric syndromes (APS) are associated with central nervous system antibodies. This study investigated related magnetic resonance spectroscopic imaging (MRSI) signatures and their correlations with electroencephalography (EEG), cerebrospinal fluid (CSF), and psychometric/neuropsychological measures.
methodsTwenty-eight adults with suspected antibody-positive AP spectrum syndromes were compared with 28 matched healthy controls. Inclusion in the patient group was based on the APS concept, resulting in a heterogeneous group with uniform autoimmunity. MRSI was performed using a spiral-encoded Mescher-Garwood localised adiabatic selective refocusing 3D-MRSI sequence. Glutamate+glutamine (Glx), gamma-aminobutyric acid (GABA), total N-acetylaspartate (tNAA), and total creatine (tCr) were reported as ratios to tNAA and/or tCr. EEG was analysed for intermittent rhythmic delta/theta activity (IRDA/IRTA) using independent component analysis.
resultsNo significant differences in Glx, GABA, tNAA, or tCr ratios were observed between patients and controls. Correlation analyses in patients showed a trend for a negative association of the IRDA/IRTA rate before hyperventilation with the GABA/tCr ratio in both hippocampi and with the GABA/tNAA ratio in the left hippocampus and Glx/tCr ratio in the right putamen and pallidum. Significant positive correlations were observed between inflammatory CSF markers (white blood cell count and IgG Index) and GABA/tCr and GABA/tNAA ratios in the left caudate nucleus and right isthmus cingulate and thalamus, as well as between negative symptoms in PANSS and higher GABA/tCr ratios in the right putamen. DISCUSSION: No group differences were identified; however, correlations suggest a link between neuroinflammatory CSF markers and negative symptoms with GABAergic signalling in patients. Multimodal diagnostic approaches may provide a better understanding of the link between neuroinflammation, neurochemistry, and EEG slowing.
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