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相关概念视频

The Neuromuscular Junction01:19

The Neuromuscular Junction

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The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
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Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Neuromuscular Junction And Blockade01:29

Neuromuscular Junction And Blockade

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The site of chemical communication between a motor neuron and a muscle fiber is called the neuromuscular junction (NMJ). The end of the motor neuron at the NMJ divides into a cluster of synaptic end bulbs. The cytoplasm of these bulbs consists of synaptic vesicles enclosing acetylcholine molecules, the principal neurotransmitter released at the NMJ. The region opposite the synaptic bulb that ends in the muscle fiber is called the motor end plate, which has acetylcholine receptors. Within the...
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Relaxation of Skeletal Muscles01:29

Relaxation of Skeletal Muscles

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The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open....
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Nervous System01:21

Nervous System

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The nervous system coordinates body functions through its complex network of nerve cells, enabling sensation and movement. It is divided into two primary parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and the spinal cord. The brain acts as the body's control center, processing sensory information and coordinating responses. The spinal cord functions as a major signaling pathway for the brain and the rest of the body.
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相关实验视频

Updated: Sep 15, 2025

Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions
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Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions

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神经肌肉结点和补体系统.

Saiju Jacob1, James F Howard2

  • 1Institute of Immunology and Immunotherapy, University of Birmingham, United Kingdom; University Hospitals Birmingham, Birmingham, United Kingdom.

International review of neurobiology
|July 17, 2025
PubMed
概括

补充抑制通过防止乙胆受体 (AChR) 抗体诱导的神经肌肉结节损伤,对一般化肌痛性肌痛症 (MG) 有希望. 针对补充蛋白5 (C5) 的疗法正在推进,对MG患者有潜在的长期益处.

关键词:
C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5 C5补充 补充 补充 补充在Eculizumab中使用.骨髓灰质炎 (Myasthenia gravis) 是一个严重的疾病.拉夫鲁兹马布的使用情况齐卢科普兰是Zilucoplan的一种.

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Characterization of Neuromuscular Junctions in Mice by Combined Confocal and Super-Resolution Microscopy
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相关实验视频

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Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions
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Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions

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科学领域:

  • 神经学 神经学
  • 免疫学 免疫学 免疫学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 一般化骨髓灰质炎 (MG) 通常是由乙胆受体 (AChR) 抗体引起的.
  • 这些抗体触发补充激活,导致通过膜攻击复合体 (MAC) 破坏神经肌肉结 (NMJ).
  • 实验模型证实了补充剂在MG病变发生过程中的作用.

研究的目的:

  • 审查对一般化肌痛性骨髓灰质炎的补充抑制疗法的开发和有效性.
  • 突出行动机制和针对MG的补充系统的潜在好处.
  • 讨论MG的补充性治疗的安全考虑和未来方向.

主要方法:

  • 对MG中补充途径的科学文献的审查.
  • 实验性自身免疫MG (EAMG) 模型的分析.
  • 对针对C5.5的抗补充疗法的临床试验数据的摘要.

主要成果:

  • 近90%的MG患者具有IgG1或IgG3抗AChR抗体.
  • 补充抑制,特别是C5阻断,可以防止MAC的形成和NMJ的破坏.
  • 一些抗补剂疗法 (eculizumab,齐卢科普兰等) 在MG小组中显示出长期益处.
  • 由于感染风险,可能需要接种疫苗和预防性抗生素.

结论:

  • 补充抑制是一种有前途的治疗策略,用于通用MG.
  • 准C5有效地减轻了补充介导的NMJ损伤.
  • 对生物标志物的进一步研究可能会优化患者选择基于补充的疗法.