Disrupted brain gray matter networks in drug-naive participants with essential tremor



Yang, Jing, Lei, Du, Peng, Jiaxin, Suo, Xueling, Pinaya, Walter HL, Li, Wenbin, Li, Junying, Kemp, Graham J ORCID: 0000-0002-8324-9666, Peng, Rong and Gong, Qiyong
(2021) Disrupted brain gray matter networks in drug-naive participants with essential tremor. NEURORADIOLOGY, 63 (9). pp. 1501-1510.

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Abstract

<h4>Purpose</h4>To use structural magnetic resonance imaging and graph theory approaches to investigate the topological organization of the brain morphological network based on gray matter in essential tremor, and its potential relation to disease severity.<h4>Methods</h4>In this prospective study conducted from November 2018 to November 2019, 36 participants with essential tremor and 37 matched healthy controls underwent magnetic resonance imaging. Brain networks based on the morphological similarity of gray matter across regions were analyzed using graph theory. Nonparametric permutation testing was used to assess group differences in topological metrics. Support vector machine was applied to the gray matter morphological matrices to classify participants with essential tremor vs. healthy controls.<h4>Results</h4>Compared with healthy controls, participants with essential tremor showed increased global efficiency (p < 0.01) and decreased path length (p < 0.01); abnormal nodal properties in frontal, parietal, and cerebellar lobes; and disconnectivity in cerebello-thalamo-cortical network. The abnormal brain nodal centralities (left superior cerebellum gyrus; right caudate nucleus) correlated with clinical measures, both motor (Fahn-Tolosa-Marìn tremor rating, p = 0.017, r = - 0.41) and nonmotor (Hamilton depression scale, p = 0.040, r = - 0.36; Hamilton anxiety scale, p = 0.008, r = - 0.436). Gray matter morphological matrices classified individuals with high accuracy of 80.0%.<h4>Conclusion</h4>Participants with essential tremor showed randomization in global properties and dysconnectivity in the cerebello-thalamo-cortical network. Participants with essential tremor could be distinguished from healthy controls by gray matter morphological matrices.

Item Type: Article
Uncontrolled Keywords: Essential tremor, Graph theory, Small world, Gray matter, Structural MR, Machine learning, Psychoradiology
Divisions: Faculty of Health and Life Sciences
Faculty of Health and Life Sciences > Faculty of Health and Life Sciences
Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User: Symplectic Admin
Date Deposited: 15 Apr 2021 07:03
Last Modified: 18 Jan 2023 22:53
DOI: 10.1007/s00234-021-02653-7
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3119285