风险因素在调节组织因子活性和血液血栓生成性方面的作用
Antonia Sambola1, Julio Osende, James Hathcock
1Cardiovascular Biology Research Laboratory, Mount Sinai School of Medicine, New York, NY 10029, USA.
Circulation
|February 26, 2003
概括
循环组织因子 (TF) 活性增加有助于糖尿病,吸烟和高脂血症的血栓性并发症. 管理这些心血管风险因素可能会降低TF水平和相关的血栓形成风险.
科学领域:
- 心血管科学 心血管科学
- 血液学 血液学 血液学
- 代谢性疾病研究研究
背景情况:
- 动脉血性疾病与循环组织因子 (TF) 的升高有关.
- 糖尿病,高脂血症和吸烟等心血管风险因素与血栓并发症增加相关.
- 这项研究调查了增加的TF活性是否会在2型糖尿病患者,吸烟者和超脂症患者中调解血栓发生率 (BT) 的增加.
研究的目的:
- 确定循环组织因子 (TF) 活性在2型糖尿病患者血栓发生性 (BT) 中的作用.
- 研究吸烟和高脂血症对循环TF和BT水平的影响.
- 通过TF活动探索心血管风险因素和血栓并发症之间的关系.
主要方法:
- 通过免疫捕获,再脂化和XA因子 (FXa) 生成量化循环TF.
- 在巴迪蒙输液室中使用血栓形成来评估血液血栓性 (BT).
- 研究了控制不良的2型糖尿病患者 (n=36),吸烟者 (n=10) 和高脂血症患者 (n=10).
主要成果:
- 改善糖尿病患者的血糖控制减少了循环TF和BT.
- 吸两支香烟急剧增加了TF水平.
- 与健康志愿者相比,高脂血症受试者表现出更高的循环TF水平.
结论:
- 循环TF升高可能是糖尿病,吸烟和高脂血症患者血栓形成风险增加的关键机制.
- 这些发现强调了评估和管理全球心血管风险的重要性.
- 向TF活动可能是减少血栓性并发症的治疗策略.
相关概念视频
Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
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...
Coagulation
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...
Extrinsic and Intrinsic Pathways of Hemostasis
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 forms a...
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 forms a...
Clot Retraction and Fibrinolysis
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.
Disorders of Hemostasis
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.


