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Search: WFRF:(Thompson PM)

  • Result 121-130 of 153
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  • Schwarz, E, et al. (author)
  • Reproducible grey matter patterns index a multivariate, global alteration of brain structure in schizophrenia and bipolar disorder
  • 2019
  • In: Translational psychiatry. - : Springer Science and Business Media LLC. - 2158-3188. ; 9:1, s. 12-
  • Journal article (peer-reviewed)abstract
    • Schizophrenia is a severe mental disorder characterized by numerous subtle changes in brain structure and function. Machine learning allows exploring the utility of combining structural and functional brain magnetic resonance imaging (MRI) measures for diagnostic application, but this approach has been hampered by sample size limitations and lack of differential diagnostic data. Here, we performed a multi-site machine learning analysis to explore brain structural patterns of T1 MRI data in 2668 individuals with schizophrenia, bipolar disorder or attention-deficit/ hyperactivity disorder, and healthy controls. We found reproducible changes of structural parameters in schizophrenia that yielded a classification accuracy of up to 76% and provided discrimination from ADHD, through it lacked specificity against bipolar disorder. The observed changes largely indexed distributed grey matter alterations that could be represented through a combination of several global brain-structural parameters. This multi-site machine learning study identified a brain-structural signature that could reproducibly differentiate schizophrenia patients from controls, but lacked specificity against bipolar disorder. While this currently limits the clinical utility of the identified signature, the present study highlights that the underlying alterations index substantial global grey matter changes in psychotic disorders, reflecting the biological similarity of these conditions, and provide a roadmap for future exploration of brain structural alterations in psychiatric patients.
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  • Sha, ZQ, et al. (author)
  • Subtly altered topological asymmetry of brain structural covariance networks in autism spectrum disorder across 43 datasets from the ENIGMA consortium
  • 2022
  • In: Molecular psychiatry. - : Springer Science and Business Media LLC. - 1476-5578 .- 1359-4184. ; 27:4, s. 2114-2125
  • Journal article (peer-reviewed)abstract
    • Small average differences in the left-right asymmetry of cerebral cortical thickness have been reported in individuals with autism spectrum disorder (ASD) compared to typically developing controls, affecting widespread cortical regions. The possible impacts of these regional alterations in terms of structural network effects have not previously been characterized. Inter-regional morphological covariance analysis can capture network connectivity between different cortical areas at the macroscale level. Here, we used cortical thickness data from 1455 individuals with ASD and 1560 controls, across 43 independent datasets of the ENIGMA consortium’s ASD Working Group, to assess hemispheric asymmetries of intra-individual structural covariance networks, using graph theory-based topological metrics. Compared with typical features of small-world architecture in controls, the ASD sample showed significantly altered average asymmetry of networks involving the fusiform, rostral middle frontal, and medial orbitofrontal cortex, involving higher randomization of the corresponding right-hemispheric networks in ASD. A network involving the superior frontal cortex showed decreased right-hemisphere randomization. Based on comparisons with meta-analyzed functional neuroimaging data, the altered connectivity asymmetry particularly affected networks that subserve executive functions, language-related and sensorimotor processes. These findings provide a network-level characterization of altered left-right brain asymmetry in ASD, based on a large combined sample. Altered asymmetrical brain development in ASD may be partly propagated among spatially distant regions through structural connectivity.
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  • Result 121-130 of 153
Type of publication
journal article (136)
conference paper (10)
research review (1)
Type of content
peer-reviewed (120)
other academic/artistic (27)
Author/Editor
Thompson, PM (70)
Jahanshad, N (41)
Stein, DJ (39)
Martin, NG (39)
Medland, SE (39)
Andreassen, OA (36)
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Montgomery, GW (35)
Agartz, I (31)
Hottenga, JJ (30)
Kwon, JS (30)
Boomsma, DI (28)
Spalletta, G (28)
Esko, T (28)
Wang, Z. (26)
Hibar, DP (26)
Piras, F (26)
Stefansson, K (26)
Metspalu, A (25)
Baune, BT (24)
van den Heuvel, OA (24)
Mattheisen, M (24)
Teumer, A (24)
McIntosh, AM (24)
Nothen, MM (24)
Smoller, JW (24)
Willemsen, G (23)
Cichon, S (23)
Hayward, C. (23)
Milani, L (23)
Benedetti, F (22)
Yun, JY (22)
Rietschel, M (22)
Fasching, PA (22)
Easton, DF (22)
Gill, M. (22)
Westlye, LT (21)
Dennis, J (21)
Lochner, C (21)
Soriano-Mas, C (21)
Beckmann, MW (21)
Nordentoft, M (21)
Breen, G (20)
MCDONALD, C (20)
Lazaro, L (20)
Grabe, HJ (20)
Uitterlinden, AG (20)
Volzke, H (20)
Lambrechts, D (20)
Chang-Claude, J (20)
Ripke, S (20)
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University
Karolinska Institutet (149)
Uppsala University (19)
Lund University (15)
University of Gothenburg (6)
Umeå University (6)
Royal Institute of Technology (1)
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Stockholm University (1)
Örebro University (1)
Linköping University (1)
Chalmers University of Technology (1)
Högskolan Dalarna (1)
Marie Cederschiöld högskola (1)
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Language
English (153)
Research subject (UKÄ/SCB)
Medical and Health Sciences (33)
Natural sciences (4)

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