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Tytuł:
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Structural Connectivity and Cortical Thickness Alterations in Transient Global Amnesia.
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Autorzy:
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Hodel J; From the Departments of Radiology (J.H., S.G., I.G., M.Z.) .
Leclerc X; Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France.
Zuber M; Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.; INSERM UMR S919 (M.Z.), Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
Gerber S; From the Departments of Radiology (J.H., S.G., I.G., M.Z.).
Besson P; Department of Radiology (P.B.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
Marcaud V; Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.
Roubeau V; Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.
Brasme H; Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.
Ganzoui I; From the Departments of Radiology (J.H., S.G., I.G., M.Z.).
Ducreux D; Department of Neuroradiology (D.D.), Bicêtre Hospital, Kremlin-Bicêtre, France.
Pruvo JP; Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France.
Bertoux M; University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France.
Zins M; From the Departments of Radiology (J.H., S.G., I.G., M.Z.).
Lopes R; Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France.; University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France.
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Źródło:
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AJNR. American journal of neuroradiology [AJNR Am J Neuroradiol] 2020 May; Vol. 41 (5), pp. 798-803. Date of Electronic Publication: 2020 May 07.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Oak Brook, IL : American Society of Neuroradiology
Original Publication: Baltimore, Williams & Wilkins.
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MeSH Terms:
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Amnesia, Transient Global/*diagnostic imaging
Amnesia, Transient Global/*physiopathology
Connectome/*methods
Adult ; Aged ; Aged, 80 and over ; Amnesia, Transient Global/pathology ; Female ; Humans ; Image Interpretation, Computer-Assisted/methods ; Magnetic Resonance Imaging/methods ; Male ; Middle Aged
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Entry Date(s):
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Date Created: 20200509 Date Completed: 20201109 Latest Revision: 20210502
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Update Code:
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20240105
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PubMed Central ID:
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PMC7228167
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DOI:
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10.3174/ajnr.A6530
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PMID:
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32381542
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Background and Purpose: Transient global amnesia (TGA) is a sudden onset of anterograde and retrograde amnesia. We aimed to assess differences in terms of cortical thickness and structural brain connectome between patients with TGA (at acute and delayed postrecovery stages) and matched controls.
Materials and Methods: We report on 18 consecutive patients with TGA who underwent 3T MR imaging, including DTI and MPRAGE sequences, at the acute (mean delay postonset: 44 hours) and delayed post-recovery (mean delay: 35 days) stages. Structural connectome was assessed in patients with TGA and in 18 age- and sex-matched controls by using probabilistic fiber- tracking and segmentation of 164 cortical/subcortical structures ("nodes"). Connectivity graphs were computed and global network metrics were calculated. Network-based statistical analysis (NBS) was applied to compare patients with TGA at each stage with controls. We also compared cortical thickness between patients with TGA and healthy controls.
Results: Global network metrics were not altered in patients with TGA. NBS-analysis showed structural connectome alterations in patients with TGA compared with controls, in core regions involving the limbic network, with 113 nodes and 114 connections (33 left intrahemispheric, 31 right intrahemispheric, and 50 interhemispheric connections) showing significantly decreased structural connectivity ( P < .05 NBS corrected, t -values ranging from 3.03 to 8.73). Lower cortical thickness compared with controls was associated with these structural alterations in patients with TGA, involving the orbitofrontal, cingulate, and inferior temporal cortices. All the abnormalities were visible at both acute and delayed postrecovery stages.
Conclusions: Our preliminary study suggests there are structural abnormalities of the limbic network in patients with TGA compared with controls, including decreased structural connectivity and cortical thickness.
(© 2020 by American Journal of Neuroradiology.)
