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相关概念视频

Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

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The Application Of Permanent Middle Cerebral Artery Ligation in the Mouse
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在TREM2,微质和缺血性中风中.

Hongxia Wang1, Xiaoling Li1, Qi Wang1

  • 1Department of Neurology, Lanzhou University Second Hospital, Cuiyingmen 82, Chengguan District, Lanzhou, Gansu 730030, China.

Journal of neuroimmunology
|June 11, 2023
PubMed
概括
此摘要是机器生成的。

本综述探讨了肌肉细胞2 (TREM2) 上表达的触发受体在缺血性中风 (IS) 炎症和微细胞表型中的作用. 它澄清了TREM2的情况.

关键词:
免疫和炎症 免疫和炎症缺血性中风是因为缺血性中风.微细胞表型 微细胞表型在TREM2中,我们可以使用TREM2.

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科学领域:

  • 神经科学是一个神经科学.
  • 免疫学 免疫学 免疫学
  • 病理生理学 病理生理学

背景情况:

  • 缺血性中风 (IS) 是一个主要的全球健康问题,炎症和免疫反应在它的发展和进展中发挥着关键作用.
  • 微质,大脑的居住免疫细胞,表现出不同的激活状态 (例如,M1,M2,DAM,WAM,SAM) 影响中风的结果.
  • 在骨髓细胞2 (TREM2) 上表达的触发受体与微质炎症和IS后的细胞发生有关,但其与特定微质表现型的确切联系尚不清楚.

研究的目的:

  • 审查和综合当前关于微质表型变化的知识,以及它们与缺血性中风炎症因素的关系.
  • 阐明TREM2受体表达,炎症媒介和缺血性中风后明显的微质表型之间的联系.
  • 探索TREM2相关的信号通路,潜在的治疗点,以及TREM2,炎症和IS中的微质之间的相互作用.

主要方法:

  • 在缺血性中风的背景下对微质表型,炎症和TREM2的现有文献进行系统审查.
  • 转录组数据的分析和TREM2表达模式及其与炎症标志物的相关性研究.
  • 对研究TREM2信号通路及其在实验性中风模型中的调制的研究进行了审查.

主要成果:

  • 微质激活模式在缺血性中风的不同病理阶段演变,与特定的炎症概况相关.
  • 在IS后,TREM2的表达上调,并与炎症反应和细胞活动有关.
  • 虽然TREM2在微质炎症和细胞形成中的作用已得到认可,但其与SAM等特定复杂表型的直接关系需要进一步研究.

结论:

  • 在缺血性中风后,TREM2在调节微质反应,炎症和潜在的神经保护或神经毒性方面发挥着重要作用.
  • 了解TREM2,炎症和多种微质表型之间的复杂关系对于开发有针对性的IS疗法至关重要.
  • 需要进一步的研究,以充分阐明涉及TREM2和新型微质表型的机制,如中风相关的微质 (SAM),以进行潜在的治疗干预.