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相关概念视频

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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Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

34
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...
34
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

52
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...
52
Cerebral Edema l: Introduction01:19

Cerebral Edema l: Introduction

34
Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
34
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

31
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this...
31
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

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Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous...
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相关实验视频

Updated: May 6, 2026

Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
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补充抑制在慢性腹膜血瘤液体中的补充抑制.

Niklas Marklund1, Shaian Zolfaghari1, Gustaf Westerberg1

  • 1Department of Clinical Sciences Lund, Division of Neurosurgery, Department of Neurosurgery, Lund University and Skane University Hospital, Lund, Sweden.

Inflammation
|December 9, 2024
PubMed
概括

慢性腹膜下血腫 (CSDH) 涉及到補體系統水平的變化. 补充抑制剂Clusterin增加,而C5a和C9减少,表明碎片清除和炎症受损.

关键词:
生物标志物生物标志物慢性腹膜下血腫 慢性腹膜下血腫补充因素是补充因素.

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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells

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A Choroid Plexus Epithelial Cell-based Model of the Human Blood-Cerebrospinal Fluid Barrier to Study Bacterial Infection from the Basolateral Side
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A Choroid Plexus Epithelial Cell-based Model of the Human Blood-Cerebrospinal Fluid Barrier to Study Bacterial Infection from the Basolateral Side

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相关实验视频

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Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
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Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase

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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
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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
  • 生物化学 生化学

背景情况:

  • 慢性腹膜下血瘤 (CSDH) 的病理生理学是复杂的,炎症可能起作用.
  • 在CSDH中补充系统的参与仍然在很大程度上是未知的.
  • 研究补充系统对CSDH的贡献对于了解疾病机制至关重要.

研究的目的:

  • 调查补充系统在慢性腹腔内血瘤 (CSDH) 病理生理学中的作用.
  • 在CSDH液体和外周血液中分析炎症和补充激活的生物标志物.
  • 检查CSDH膜和dura对补充元件沉积的情况.

主要方法:

  • 从20名CSDH患者同时采集CSDH液体和外周血液.
  • 针对C5b-C9和C5a的CSDH囊和杜拉的免疫组织化学.
  • 对炎症和补充生物标志物的多重测定 (阿迪波涅克丁,克卢斯特林,C9,CRP) 和C5a分析.

主要成果:

  • 在CSDH液体和外围血液之间,有10个生物标志物显著不同.
  • 在CSDH流体中,聚素和细胞素C的含量增加;C5a,补充剂9和阿迪波内克丁的含量减少.
  • 在硬膜或CSDH膜中没有发现C5a或C5b-C9膜攻击复合体免疫活性.

结论:

  • CSDH表现出补充抑制剂Clusterin的水平增加以及C5a和C9.9的水平降低.
  • 缺少膜攻击复合体C5b-C9表明它不是CSDH膜的主要因素.
  • 补充抑制可能会损害CSDH碎片的清除,并促进二次炎症.