按需的低频刺激用于控制发作:疗效和行为影响
Enya Paschen1,2, Piret Kleis1,2, Diego M Vieira3
1Experimental Epilepsy Research, Department of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg 79106, Germany.
Brain : a journal of neurology
|September 7, 2023
概括
按需低频刺激 (LFS) 能够有效地控制低频刺激的模型中的发作. 这种新的方法在 mesial temporal lobe epilepsy (MTLE) 中也显示没有负面的认知影响,并可能改善记忆缺陷.
科学领域:
- 神经科学是一个神经科学.
- 的研究研究.
- 神经调节是一种神经调节.
背景情况:
- 半径叶 (MTLE) 是常见的,通常耐药,并与海马硬化症有关.
- 目前用于耐火性的深度大脑刺激使用高频率,面临错误检测和延迟干预等局限性.
- 连续低频刺激 (LFS) 在临床前模型中表现有前途,但减少刺激负载是可取的.
研究的目的:
- 开发和评估在临床前模型中进行控制的按需LFS协议.
- 研究海马体LFS对认知功能的影响,包括焦虑,记忆和空间导航.
- 为了比较按需LFS与连续LFS的有效性和刺激负载.
主要方法:
- 采用了海马体内凯纳特小鼠模型,模仿了诸如发作和海马体硬化等MTLE特征.
- 开发了一种在线检测算法,以识别型爆发并触发海马体LFS.
- 通过测试焦虑 (光暗盒),记忆 (物体位置,新物体识别) 和空间导航 (巴恩斯迷宫) 来评估行为表现.
主要成果:
- 按需LFS在预防集群方面几乎与连续LFS一样有效,刺激程度明显低.
- 与对照组相比,性小鼠表现出增加的焦虑和空间学习/记忆障碍.
- 海马体LFS没有对认知产生负面影响,甚至在性小鼠中缓解了长期记忆缺陷.
结论:
- 按需 hippocampal LFS 提供了一个有希望的,不那么繁重的替代方案,用于控制焦点的发作.
- 这种方法克服了当前高频刺激的局限性,并且不会损害认知功能.
- 对治疗的LFS进行进一步的研究是有必要的,这可能会改善耐药患者的治疗结果.
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