在帕金森病的功能连接性变化和条状多巴胺缺乏症的动态性质
Adrian L Asendorf1, Hendrik Theis1,2, Marc Tittgemeyer3,4
1Department of Nuclear Medicine, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
Human brain mapping
|July 3, 2024
概括
在帕金森病 (PD) 中,条状多巴胺水平影响动态功能连接 (dFC) 和运动性能. 在早期PD中保持运动功能可能与相互连接的大脑状态的动态参与有关,这与多巴胺可用性有关.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 放射学 放射学是一门学科.
背景情况:
- 帕金森病 (PD) 的特点是动态功能连接 (dFC) 的中断.
- 条状多巴胺终端完整性对dFC指标和PD临床特征的直接影响尚不清楚.
研究的目的:
- 为了调查条状多巴胺终端完整性是否调节PD早期的dFC指标.
- 检查多巴胺相关的大脑网络动态和PD患者的临床特征之间的关系.
主要方法:
- 利用休息状态功能性磁共振成像 (rsfMRI) 和多巴胺转运器 (DaT) SPECT/PET成像从两个PD队列 (PPMI和KFO) 中.
- 应用独立组件分析,滑动窗口分析和k-means集群来导出dFC状态和时间指标.
- 与状多巴胺合成/终端数量和临床严重性相关的dFC指标 (例如,运动分数).
主要成果:
- 在PPMI队列中,PD患者表现出改变的dFC,与对照组相比,状态出席率较低,过渡次数较少.
- 较差的运动分数和多巴胺基功能障碍与全球综合状态的停留时间缩短和过渡次数减少有关.
- 虽然在KFO队列中没有完全复制,但在两个队列中,较差的运动性能与集成状态和较少连接状态之间的过渡次数较少相关.
结论:
- 相互连接的大脑状态的动态参与可能与早期PD中保存的运动性能有关.
- 狭性多巴胺的可用性似乎影响了与运动控制相关的大规模网络动态.
- 队列特异性差异突出了人口统计学或疾病特异性因素对PDdFC发现的潜在影响.
相关概念视频
01:15Parkinson's Disease: Overview
522
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...
522
01:24Parkinson's Disease: Treatment
251
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...
251
01:37Neural Regulation
39.3K
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.
39.3K
01:30Attention-Deficit/Hyperactivity Disorder
54
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
54
01:29Drugs Affecting Neurotransmitter Synthesis
1.3K
Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
1.3K