Details

Autor(en) / Beteiligte

• Peng, Weifeng
• Mao, Lingyan
• Yin, Dazhi
• Sun, Wei
• Wang, He
• Zhang, Qianqian
• Wang, Jing
• Chen, Caizhong
• Zeng, Mengsu
• Ding, Jing
• Wang, Xin

Titel

Functional network changes in the hippocampus contribute to depressive symptoms in epilepsy

Ist Teil von

• Seizure (London, England), 2018-08, Vol.60, p.16-22

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• •The hippocampus may take part in the comorbidity of epilepsy and depression.•Epilepsy patients with depression have abnormal hippocampus-cerebellum circuit.•Modulating cerebellum might be a target for treating depression in epilepsy. Our study aimed to investigate the functional connectivity (FC) between the hippocampus and other brain regions in epilepsy patients with depressive symptoms. Epilepsy patients with and without depressive symptoms, assessed using the 17-item Hamilton Depression Rating Scale scores, were enrolled. Healthy volunteers were recruited as the control group. Resting state functional magnetic resonance imaging was performed, and the data were processed using Resting-State fMRI (DPARSFA2.0) software. The regional homogeneity (ReHo) values and the FC between the right hippocampus and other brain regions were analysed. The ReHo value of the cerebellum (particularly the left cerebellar hemisphere) was significantly lower in epilepsy patients than in healthy controls, and was lower in epilepsy patients with depressive symptoms (EP + DS group) than in those without depressive symptoms (EP-DS group, p < 0.05). Additionally, the FC between the right hippocampus and the bilateral cerebellum was significantly greater in the EP + DS group than in the EP-DS group (p < 0.05). Moreover, abnormal ReHo values in the bilateral frontal lobes, including the right anterior cingulate cortex, and changes in the FC between the right hippocampus and the bilateral frontal lobes were found in the EP + DS group. Minor changes in the FC between the temporal and parietal lobes were also found in the epilepsy patients. The functional right hippocampus–cerebellum circuit might contribute to the pathogenesis of depressive symptoms in epilepsy, with the exception of brain areas associated with emotion such as the frontal and temporal lobes. Modulating the hippocampus–cerebellum circuit is a potential therapeutic strategy for epilepsy patients with depressive symptoms.