在莱沃多巴诱导的运动障碍期间神经运动网络活动的连贯变化,在帕金森病的老鼠模型中
Elena S Brazhnik1, Ivan E Mysin1, Lyudmila B Popova2
1Federal State Budgetary Educational Institution, Institute of Theoretical and Experimental Biophysics, 142290 Pushchino, Russia.
Journal of integrative neuroscience
|December 30, 2024
概括
对帕金森病 (PD) 的乐伏多巴治疗可以通过降低大脑中的抑制控制来引起动力障碍,从而导致异常的马振荡. 恢复这种控制可以缓解症状和异常的大脑活动.
科学领域:
- 神经科学是一个神经科学.
- 运动障碍 运动障碍
- 药理学 药理学是指药理学的学科.
背景情况:
- 利沃多巴是帕金森病 (PD) 运动症状的关键治疗方法.
- 长期使用利沃多巴可导致利沃多巴诱导的运动障碍症 (LID),其特征是非自愿的运动.
- 在PD患者和患有LID的动物模型中观察到高频马振荡.
研究的目的:
- 为了研究从利沃多巴停用到运动障碍的过渡期间运动网络活动的变化.
- 了解电机网络组件对异常马振荡和LID的贡献.
主要方法:
- 患有6-氧多巴胺 (6-OHDA) 病变的老鼠在7天内接受了高剂量的乐伏多巴.
- 从运动皮质 (MCx),腹中 thalamus (VM) 和 substantia nigra pars reticulata (SNpr) 记录了局部场潜力 (LFP) 和神经元活动.
主要成果:
- 利沃多巴降低了VM和MCx中的β振荡和诱导的马振荡,与异常的非自愿运动 (AIMs) 相关.
- 在LID期间,SNpr显示神经元活动下降,并且没有马振荡.
- 抑制VM神经元并没有取消AIMs,但SNpr神经元的激活减少了马振荡和运动障碍.
结论:
- 列沃多巴治疗减少了来自SNprGABAergic神经元的抑制控制,导致运动电路过活.
- 这种过度活跃会导致甲状腺皮层的马振荡和LID.
- 恢复SNpr抑制控制可能是LID的治疗策略.
相关概念视频
Neural Regulation
38.9K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
38.9K
Parkinson's Disease: Overview
303
Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
303
Parkinson's Disease: Treatment
148
Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
148


