通过补充依赖的突触消除的微介质遗忘
Chao Wang1,2, Huimin Yue1,2, Zhechun Hu1,2
1Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou 310058, China.
概括
微会吞大脑中的突触,导致记忆丧失. 抑制这一过程,特别是补充通路, 防止记忆丧失, 保持内细胞连接.
科学领域:
- 神经科学
- 免疫学
- 记忆研究
背景情况:
- 脑细胞中的突触对于存储记忆至关重要.
- 记忆丧失与这些突触的减弱或丧失有关.
- 脑部的免疫细胞微细胞与突触可塑性有关.
研究的目的:
- 调查微质在远程记忆的遗忘中的作用.
- 阐明微质细胞导致记忆衰退的机制.
- 要确定补充路径是否参与微质介导的遗忘.
主要方法:
- 在小鼠海马体中观察突触成分的微质吞.
- 微质细胞的消耗和微质细胞的抑制.
- 引入CD55以抑制恩格拉姆细胞中的补体通路.
- 评价记忆保留和内细胞解离.
主要成果:
- 在健康的成年小鼠中观察到突触元件的微囊包裹.
- 消耗小质细胞或抑制它们的细胞形成, 防止记忆失忆.
- 抑制补充细胞的途径也可以防止遗忘.
- 微细胞参与了与神经发生相关的和无关的记忆退化.
结论:
- 微细胞以一种依赖补充和依赖活动的方式消除突触,导致记忆失忆.
- 通过微细胞的辅助性突触消除是遗忘远程记忆的关键机制.
- 向微质活动和补充通路可能提供对抗记忆丧失的策略.
相关概念视频
Role of Neurotransmitters in Memory
2.3K
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...
2.3K
Higher Mental Functions of Brain: Learning and Memory
1.8K
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
1.8K
Long-term Depression
3.0K
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...
3.0K
Long-term Depression
32.9K
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.
32.9K
Forgetting
303
Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
Encoding...
303
Interference and Decay
368
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
368


