大脑代谢物概况与选择性神经元脆弱性和肌缩侧面硬化症的潜在机制有关
Enam Alhagh Gorgich1,2, Zahra Heidari2,3, Hamidreza Mahmoudzadeh-Sagheb2,3
1Department of Anatomy, School of Medicine, Iranshahr University of Medical Sciences, Iranshahr 99166-43535, Iran.
ACS chemical neuroscience
|March 29, 2025
概括
肌缩侧面硬化症 (ALS) 在主要运动皮质和眼睛运动核中显示出明显的神经化学变化. 这些代谢物变化与疾病的严重程度和进展相关,为ALS病理生理学提供了洞察力.
科学领域:
- 神经学 神经学
- 神经成像是一种神经成像.
- 生物化学 生化学
背景情况:
- 肌缩侧面硬化症 (ALS) 是一种致命的神经退行性疾病,其特征是运动神经元损失.
- 眼动核在ALS中相对较少,这表明特定区域的脆弱性.
- 了解受影响和幸免的大脑区域的神经化学变化对于ALS研究至关重要.
研究的目的:
- 通过使用质子磁共振光谱 (1H-MRS) 来研究ALS患者和健康对照者之间的初级运动皮层 (PMC) 和Cajal (INC) 间歇性核中的代谢物差异.
- 探索已识别的1H-MRS标志物与ALS疾病严重程度和进展的临床测量之间的相关性.
主要方法:
- 一项涉及20名ALS患者和20名健康对照者的病例控制研究.
- 用1.5 T MRI和多素1H-MRS量化代谢物水平 (tNAA,mIns,tCr,tCho) 和PMC和INC中的比率.
- 分析了1H-MRS标志物与ALS功能评级表 (ALSFRS-R),强迫生命能力 (FVC) 和疾病进展率 (ΔFS) 之间的关联.
主要成果:
- 在PMC中,与对照组相比,ALS患者的tNAA和tNAA/tCr较低,mIns和mIns/tNAA较高 (p <0.05).
- 在INC中,ALS患者表现出增加的tCho和mIns度,以及更高的mIns/tNAA比率 (p <0.05),tNAA或tNAA/tCr没有显著变化.
- 在PMC中,tNAA/tCr比率与ALSFRS-R,FVC和ΔFS有显著的相关性. PMC mIns/tNAA比率与 ΔFS 相对应. INC tCho和mIns/tNAA比率与ALSFRS-R和ΔFS相关联.
结论:
- 在ALS患者中,PMC和INC的神经化学变化是明显的.
- 这些代谢物变化与选择性神经元脆弱性和疾病进展有关.
- 1H-MRS标志物显示出评估ALS疾病状态和进展的生物标志物的潜力.
更多相关视频
08:59Real-Time Fluorescent Measurement of Synaptic Functions in Models of Amyotrophic Lateral Sclerosis
Published on: July 16, 2021
2.5K
11:03Use of Capillary Electrophoresis Immunoassay to Search for Potential Biomarkers of Amyotrophic Lateral Sclerosis in Human Platelets
Published on: February 10, 2020
7.2K
相关概念视频
Alzheimer's Disease: Overview
313
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
313
Neural Regulation
39.0K
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.
39.0K
Long-term Depression
2.4K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
2.4K
