突触蛋白CSF水平与没有痴呆症的个体的记忆得分有关
Kirsten E J Wesenhagen1, Diederick M de Leeuw1, Jori Tomassen1
1Alzheimer Center Amsterdam, Vrije Universiteit Amsterdam, Amsterdam UMC.
Research square
|August 7, 2024
概括
大脑脊髓液中的突触蛋白水平与阿尔茨海默病 (AD) 早期阶段的记忆力下降相关,甚至在显著的认知障碍之前. 这些发现强调了早期的突触功能障碍作为潜在的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 老年学是指老年学的学科.
背景情况:
- 研究了与记忆功能相关的脑脊液 (CSF) 突触蛋白水平.
- 在正常认知 (CN) 和轻度认知障碍 (MCI) 群体中检查的关联.
- 评估了粉样蛋白阳性对这些突触蛋白-记忆关系的影响.
研究的目的:
- 为了确定CSF突触蛋白水平与记忆表现的相关性.
- 在具有正常认知和轻度认知障碍的个体中探索这些关联.
- 了解粉样状况对突触蛋白-记忆协会的影响.
主要方法:
- 分析了来自EMIF-AD MBD和ADNI队列的242名CN和278名MCI参与者的数据.
- 包括 181 种 (EMIF-AD MBD) 和 36 种 (ADNI) 具有突触注释 (SynGO) 的蛋白质.
- 利用线性模型来评估蛋白质水平与词汇学习回忆之间的关联.
主要成果:
- 确定了具有较低水平的突触蛋白的子集,与临床前阿尔茨海默病中更差的回忆相关 (EMIF-AD MBD: 7,ADNI: 5种蛋白).
- 在原始性AD (EMIF-AD MBD: 27个蛋白质) 和非AD MCI (EMIF-AD MBD: 1,ADNI: 7个蛋白质) 中观察到的关联.
- 发现大多数确定的关联是特定于研究的认知/粉样类组.
结论:
- 与突触功能障碍相关的记忆障碍在阿尔茨海默病的早期很明显.
- 表明在阿尔茨海默病早期准突触机制可能是一个有前途的治疗策略.
- 突出突出突触蛋白作为早期AD检测和干预的生物标志物的潜力.
相关概念视频
Role of Neurotransmitters in Memory
494
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
494
Long-term Depression
2.5K
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...
2.5K
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
112
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
112
Alzheimer's Disease: Overview
456
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...
456


