缺血性中风,血栓栓塞和凝块结构
Katherine Stanton1, Helen Philippou1, Robert As Ariëns1
1Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK.
Neuroscience
|March 7, 2024
概括
缺血性中风患者的血块更密集,并且抵抗分解. 虽然体外研究显示出一致的变化,但体外凝块的组成有所不同,影响了诊断和治疗策略.
科学领域:
- 神经学 神经学
- 血液学 血液学 血液学
- 生物医学工程 生物医学工程
背景情况:
- 缺血性中风是全球死亡和残疾的主要原因.
- 血液凝固和血栓栓塞是中风发展的关键.
- 最近的研究突出显示,中风患者的血块结构和组成发生了变化.
研究的目的:
- 在缺血性中风中审查和讨论血块结构,功能和组成.
- 探索凝块特征与临床诊断之间的关系.
- 检查对血栓溶解和血栓切除等治疗选择的影响.
主要方法:
- 从患者血样本中分析体外血块结构.
- 在血栓切除手术过程中检索出的血栓的活体分析.
- 讨论影响凝块组成的机制,包括中性细胞外细胞陷和凝块收缩.
主要成果:
- 在实验室中缺血性中风患者的凝块结构始终显示出更密集的凝块,更耐纤维解.
- 来自血栓切除检索的ex vivo凝块组成和架构数据更为可变.
- 中性细胞细胞外陷和凝块收缩影响凝块结构.
结论:
- 实验室检测结果表明,在缺血性中风患者中,凝块结构的持续变化.
- 活体凝块数据中的变异性需要进一步调查.
- 使用先进的成像和检索技术的未来研究将提高对诊断和治疗的理解.
相关概念视频
Anticoagulant Drugs: Low-Molecular-Weight Heparins
696
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
696
Clot Retraction and Fibrinolysis
5.9K
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
5.9K
Disorders of Hemostasis
904
Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
904
Coagulation
6.6K
The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
6.6K
Structure and Function of Platelets
1.2K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
1.2K
Extrinsic and Intrinsic Pathways of Hemostasis
7.6K
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
7.6K


