脑下核深层大脑刺激缓解了帕金森病的序列效应和步态结
medRxiv : the preprint server for health sciences
|May 19, 2025
概括
帕金森病 (PD) 步态中的序列效应有助于步态结 (FOG). 脑下核深度大脑刺激 (STN-DBS) 有效地减轻了这种序列效应,并降低了PD患者的FOG严重程度.
科学领域:
- 神经学 神经学
- 生物医学工程 生物医学工程
- 运动科学 运动科学
背景情况:
- 序列效应,以渐进的步伐缩短为特征,是帕金森病 (PD) 中步伐结 (FOG) 的关键因素.
- 这种行走障碍往往对多巴胺类药物治疗和注意力策略等常规治疗有抗性.
- 外部暗示已经显示出一些有效性,但亚体内核深脑刺激 (STN-DBS) 在管理序列效应和FOG方面的作用仍在调查中.
研究的目的:
- 在患有PD的个体中量化描述空间时间步态参数中的序列效应.
- 研究双边STN-DBS对PD患者的序列效应和FOG的影响.
主要方法:
- 一个利用的替代任务被用来引起FOG在18个患有PD的个人 (与双边STN-DBS) 和14个年龄相匹配的健康对照.
- 步行参数测量使用部安装的惯性测量单元,既关闭和开启STN-DBS (在药物关闭状态下).
- 序列效应是使用指数式衰变函数对步态参数随时间推移而建模的.
主要成果:
- 序列效应在PD参与者身上观察到腿部摆动的角度速度和范围,但在对照组中没有.
- 在关闭STN-DBS时,序列效应的严重程度和结事件的持续时间之间发现了显著的相关性 (p < 0.001).
- STN-DBS显著降低了序列效应 (p = 0.002) 并减少了结时间 (p = 0.01).
结论:
- 在PD中,一步到位任务有效地展示了速度和空间步态参数的序列效应.
- 序列效应是导致帕金森病FOG严重程度的一个重要因素.
- 双边STN-DBS证明有效地减轻了序列效应,从而改善了PD患者的FOG.
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