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Dong L, Liang HB, Du J, Wang Y, Zhou Q, Xin Z, Hu Y, Liu YS, Zhao R, Qiao Y, Zhou C, Liu JR, Du X. Microstructural Differences of the Cerebellum-Thalamus-Basal Ganglia-Limbic Cortex in Patients with Somatic Symptom Disorders: a Diffusion Kurtosis Imaging Study. CEREBELLUM (LONDON, ENGLAND) 2023; 22:840-851. [PMID: 35986875 DOI: 10.1007/s12311-022-01461-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
Somatic symp tom disorders (SSDs) are a group of psychiatric disorders characterized by persistent disproportionate concern and obsessive behaviors regarding physical conditions. Currently, SSDs lack effective treatments and their pathophysiology is unclear. In this paper, we aimed to examine microstructural abnormalities in the brains of patients with SSD using diffusion kurtosis imaging (DKI) and to investigate the correlation between these abnormalities and clinical indicators. Diffusion kurtosis images were acquired from 30 patients with SSD and 30 healthy controls (HCs). Whole-brain maps of multiple diffusion measures, including fractional anisotropy (FA), axial diffusivity (AD), radial diffusivity (RD), mean diffusivity (MD), mean kurtosis (MK), radial kurtosis (RK), and axial kurtosis (AK), were calculated. To analyze differences between the two groups, nonparametric permutation testing with 10,000 randomized permutations and threshold-free cluster enhancement was used with family-wise error-corrected p values < 0.05 as the threshold for statistical significance. Then, the correlations between significant changes in these diffusion measures and clinical factors were examined. Compared to HCs, patients with SSD had significantly higher FA, MK, and RK and significantly lower MD and RD in the cerebellum, thalamus, basal ganglia, and limbic cortex. The FA in the left caudate and the pontine crossing tract were negatively correlated with disease duration; the MD and the RD in the genu of the corpus callosum were positively correlated with disease duration. Our findings highlight the role of the cerebellum-thalamus-basal ganglia-limbic cortex pathway, especially the cerebellum, in SSDs and enhance our understanding of the pathogenesis of SSDs.
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Affiliation(s)
- Liao Dong
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai, 200062, China
| | - Huai-Bin Liang
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Jiaxin Du
- Centre for Advanced Imaging, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Yingying Wang
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China
| | - Qichen Zhou
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China
| | - Ziyue Xin
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China
| | - Yue Hu
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yi-Sheng Liu
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Rong Zhao
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yuan Qiao
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Chenglin Zhou
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China
| | - Jian-Ren Liu
- Department of Neurology &Jiuyuan Municipal Stroke Center, Shanghai 9Th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Xiaoxia Du
- Department of Psychology, Shanghai University of Sport, Shanghai, 200438, China.
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