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Abnormal Spontaneous Neural Activity in Parkinson’s Disease With “pure” Apathy
Frontiers in Neuroscience ( IF 4.3 ) Pub Date : 2020-08-04 , DOI: 10.3389/fnins.2020.00830
Hai-Hua Sun 1 , Jian-Bin Hu 2 , Jing Chen 3 , Xue-Yang Wang 2 , Xiao-Li Wang 4 , Ping-Lei Pan 2 , Chun-Feng Liu 3, 5
Affiliation  

Background Apathy is one of the most common non-motor symptoms of Parkinson’s disease (PD). However, its pathophysiology remains unclear. Methods We analyzed resting-state functional magnetic resonance imaging (MRI) data acquired at a 3.0T MRI scanner using the amplitude of low-frequency fluctuation (ALFF) metric in 20 de novo, drug-naïve, non-demented PD patients with apathy (PD-A), 26 PD patients without apathy (PD-NA) without comorbidity of depressive or anxious symptoms, and 23 matched healthy control (HC) subjects. Results We found that the ALFF decreased significantly in the bilateral nucleus accumbens, dorsal anterior cingulate cortex (ACC), and left dorsolateral prefrontal cortex in patients with PD-A compared to patients with PD-NA and HC subjects. Furthermore, apathy severity was negatively correlated with the ALFF in the bilateral nucleus accumbens and dorsal ACC in the pooled patients with PD. Conclusion The present study characterized the functional pattern of changes in spontaneous neural activity in patients with PD-A. With the aim to better elucidate the pathophysiological mechanisms responsible for these changes, this study controlled for the potentially confounding effects of dopaminergic medication, depression, anxiety, and global cognitive impairment. The findings of the current study add to the literature by highlighting potential abnormalities in mesocorticolimbic pathways involved in the development of apathy in PD.

中文翻译:

帕金森病中的异常自发神经活动伴“纯粹”冷漠

背景 冷漠是帕金森病 (PD) 最常见的非运动症状之一。然而,其病理生理学仍不清楚。方法 我们使用低频波动幅度 (ALFF) 指标分析了 3.0T MRI 扫描仪采集的静息状态功能磁共振成像 (MRI) 数据,该指标来自 20 名从头、未用药、非痴呆的冷漠 PD 患者。 PD-A)、26 名无冷漠 (PD-NA) 且无抑郁或焦虑症状合并症的 PD 患者和 23 名匹配的健康对照 (HC) 受试者。结果 我们发现,与 PD-NA 和 HC 受试者相比,PD-A 患者双侧伏隔核、背侧前扣带皮层 (ACC) 和左背外侧前额叶皮层的 ALFF 显着降低。此外,在合并的 PD 患者中,冷漠严重程度与双侧伏隔核和背侧 ACC 的 ALFF 呈负相关。结论 本研究描述了 PD-A 患者自发神经活动变化的功能模式。为了更好地阐明导致这些变化的病理生理机制,本研究控制了多巴胺能药物、抑郁、焦虑和整体认知障碍的潜在混杂影响。当前研究的结果通过强调与 PD 冷漠发展有关的中皮质边缘通路的潜在异常,增加了文献。结论 本研究描述了 PD-A 患者自发神经活动变化的功能模式。为了更好地阐明导致这些变化的病理生理机制,本研究控制了多巴胺能药物、抑郁、焦虑和整体认知障碍的潜在混杂影响。当前研究的结果通过强调与 PD 冷漠发展有关的中皮质边缘通路的潜在异常,增加了文献。结论 本研究描述了 PD-A 患者自发神经活动变化的功能模式。为了更好地阐明导致这些变化的病理生理机制,本研究控制了多巴胺能药物、抑郁、焦虑和整体认知障碍的潜在混杂影响。当前研究的结果通过强调与 PD 冷漠发展有关的中皮质边缘通路的潜在异常,增加了文献。
更新日期:2020-08-04
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