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van Dokkum LEH, Moritz Gasser S, Deverdun J, Herbet G, Mura T, D'Agata B, Picot MC, Menjot de Champfleur N, Duffau H, Molino F, le Bars E. Resting state network plasticity related to picture naming in low-grade glioma patients before and after resection. Neuroimage Clin 2019; 24:102010. [PMID: 31734532 PMCID: PMC6861733 DOI: 10.1016/j.nicl.2019.102010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 09/09/2019] [Accepted: 09/17/2019] [Indexed: 12/01/2022]
Abstract
Patients post DLGG surgery use attentional resources to compensate deficit. Functional plasticity occurs at secondary regions at distance from the lesion. Picture naming requires the integration of multiple resting-state networks. The right hemisphere plays also an important role in language processing. A whole brain approach with clinical input in case of lesion is the way forward.
The dynamic connectome perspective states that brain functions arise from the functional integration of distributed and/or partly overlapping networks. Diffuse low-grade gliomas (DLGG) have a slow infiltrating character. Here we addressed whether and how anatomical disconnection following DLGG growth and resection might interfere with functional resting-state connectivity, specifically in relation to picture naming. Thirty-nine native French persons with a left DLGG were included. All underwent awake surgical resection of the tumor using direct brain electrostimulation to preserve critical eloquent regions. The anatomical disconnectivity risk following the DLGG volume and the resection, and the functional connectivity of resting-state fMRI images in relation to picture naming were evaluated prior to and three months after surgery. Resting-state connectivity patterns were compared with nineteen healthy controls. It was demonstrated that picture naming was strongly dependent on the semantic network that emerged from the integration and interaction of regions within multiple resting-state brain networks, in which their specific role could be explained in the light of the broader resting-state network they take part in. It emphasized the importance of a whole brain approach with specific clinical data input, during resting-state analysis in case of lesion. Adaptive plasticity was found in secondary regions, functionally connected to regions close to the tumor and/or cavity, marked by an increased connectivity of the right and left inferior parietal lobule with the left inferior temporal gyrus. In addition, an important role was identified for the superior parietal lobe, connected with the frontal operculum, suggesting functional compensation by means of attentional resources in order to name a picture via recruitment of the frontoparietal attention network.
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Affiliation(s)
- L E H van Dokkum
- I2FH, Institut d'Imagerie Fonctionelle Humaine, Montpellier University Hospital, Gui de Chauliac, 80 av. Augustin Fliche, 34295 Montpellier, France; Neuroradiology Department, Montpellier University Hospital, Gui de Chauliac, France.
| | - S Moritz Gasser
- Neurosurgery Department, Montpellier University Hospital, Gui de Chauliac, France; Team 'Plasticity of Central Nervous System, Stem Cells and Glial Tumors', INSERM U1051, Institute of Neuroscience Montpellier, France
| | - J Deverdun
- I2FH, Institut d'Imagerie Fonctionelle Humaine, Montpellier University Hospital, Gui de Chauliac, 80 av. Augustin Fliche, 34295 Montpellier, France; Neuroradiology Department, Montpellier University Hospital, Gui de Chauliac, France
| | - G Herbet
- Neurosurgery Department, Montpellier University Hospital, Gui de Chauliac, France; Team 'Plasticity of Central Nervous System, Stem Cells and Glial Tumors', INSERM U1051, Institute of Neuroscience Montpellier, France
| | - T Mura
- Epidemiology Department, Clinical Investigation Center, INSERM-CIC 1411, Montpellier University Hospital, France
| | - B D'Agata
- Epidemiology Department, Clinical Investigation Center, INSERM-CIC 1411, Montpellier University Hospital, France
| | - M C Picot
- Epidemiology Department, Clinical Investigation Center, INSERM-CIC 1411, Montpellier University Hospital, France
| | - N Menjot de Champfleur
- I2FH, Institut d'Imagerie Fonctionelle Humaine, Montpellier University Hospital, Gui de Chauliac, 80 av. Augustin Fliche, 34295 Montpellier, France; Neuroradiology Department, Montpellier University Hospital, Gui de Chauliac, France; Laboratoire Charles Coulomb, Montpellier University, France
| | - H Duffau
- Neurosurgery Department, Montpellier University Hospital, Gui de Chauliac, France; Team 'Plasticity of Central Nervous System, Stem Cells and Glial Tumors', INSERM U1051, Institute of Neuroscience Montpellier, France
| | - F Molino
- I2FH, Institut d'Imagerie Fonctionelle Humaine, Montpellier University Hospital, Gui de Chauliac, 80 av. Augustin Fliche, 34295 Montpellier, France; Laboratoire Charles Coulomb, Montpellier University, France
| | - E le Bars
- I2FH, Institut d'Imagerie Fonctionelle Humaine, Montpellier University Hospital, Gui de Chauliac, 80 av. Augustin Fliche, 34295 Montpellier, France; Neuroradiology Department, Montpellier University Hospital, Gui de Chauliac, France
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Ding Y, Lawrence N, Olié E, Cyprien F, le Bars E, Bonafé A, Phillips ML, Courtet P, Jollant F. Prefrontal cortex markers of suicidal vulnerability in mood disorders: a model-based structural neuroimaging study with a translational perspective. Transl Psychiatry 2015; 5:e516. [PMID: 25710122 PMCID: PMC4445751 DOI: 10.1038/tp.2015.1] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 12/11/2014] [Accepted: 12/19/2014] [Indexed: 11/11/2022] Open
Abstract
The vulnerability to suicidal behavior has been modeled in deficits in both valuation and cognitive control processes, mediated by ventral and dorsal prefrontal cortices. To uncover potential markers of suicidality based on this model, we measured several brain morphometric parameters using 1.5T magnetic resonance imaging in a large sample and in a specifically designed study. We then tested their classificatory properties. Three groups were compared: euthymic suicide attempters with a past history of mood disorders and suicidal behavior (N=67); patient controls with a past history of mood disorders but not suicidal behavior (N=82); healthy controls without any history of mental disorder (N=82). A hypothesis-driven region-of-interest approach was applied targeting the orbitofrontal cortex (OFC), ventrolateral (VLPFC), dorsal (DPFC) and medial (including anterior cingulate cortex; MPFC) prefrontal cortices. Both voxel-based (SPM8) and surface-based morphometry (Freesurfer) analyses were used to comprehensively evaluate cortical gray matter measure, volume, surface area and thickness. Reduced left VLPFC volume in attempters vs both patient groups was found (P=0.001, surviving multiple comparison correction, Cohen's d=0.65 95% (0.33-0.99) between attempters and healthy controls). In addition, reduced measures in OFC and DPFC, but not MPFC, were found with moderate effect sizes in suicide attempters vs healthy controls (Cohen's d between 0.34 and 0.52). Several of these measures were correlated with suicidal variables. When added to mood disorder history, left VLPFC volume increased within-sample specificity in identifying attempters in a significant but limited way. Our study, therefore, confirms structural prefrontal alterations in individuals with histories of suicide attempts. A future clinical application of these markers will, however, necessitate further research.
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Affiliation(s)
- Y Ding
- McGill Group for Suicide
Studies, Douglas Mental Health University Institute, McGill
University, Montreal, QC, Canada
| | - N Lawrence
- Mood Disorders Centre, School of
Psychology, College of Life and Environmental Sciences, University of
Exeter, Exeter, UK
| | - E Olié
- Department of Psychiatry and
Inserm, Université Montpellier I and CHU Montpellier,
Montpellier, France
| | - F Cyprien
- Department of Psychiatry and
Inserm, Université Montpellier I and CHU Montpellier,
Montpellier, France
| | - E le Bars
- Department of Radiology,
Université Montpellier I and CHU Montpellier,
Montpellier, France
| | - A Bonafé
- Department of Radiology,
Université Montpellier I and CHU Montpellier,
Montpellier, France
| | - M L Phillips
- Clinical and Translational Affective
Neuroscience Program, University of Pittsburgh School of Medicine,
Pittsburgh, PA, USA
| | - P Courtet
- Department of Psychiatry and
Inserm, Université Montpellier I and CHU Montpellier,
Montpellier, France
| | - F Jollant
- McGill Group for Suicide
Studies, Douglas Mental Health University Institute, McGill
University, Montreal, QC, Canada,CHU Nîmes, Nimes, France,McGill Group for Suicide Studies, Douglas Mental Health
University Institute, McGill University, 6875 Boulevard Lasalle,
Montréal, QC, Canada H4H 1R3.
E-mail:
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