在急性冠状动脉综合征中,同类半素,VIIa因子和血栓生成之间的关系
M K Al-Obaidi1, H Philippou, P J Stubbs
1National Heart and Lung Institute, Cardiology and Haematology Departments, Charing Cross Campus, Imperial College School of Medicine, London, UK. m.al-obaidi@rbh.nthames.nhs.uk
Circulation
|February 2, 2000
概括
在急性冠状动脉综合征 (ACS) 患者中,高水平的homocysteine与增加的血栓生成标志物相关. 这项研究表明,在ACS中,同类半氨酸与前血栓活性之间存在联系,为其临床影响提供了潜在的解释.
科学领域:
- 心血管医学 心血管医学
- 血液学 血液学 血液学
- 生物化学 生物化学
背景情况:
- 之前的研究表明,同类半氨酸促进了血栓生成.
- 这种前列血栓效应以前没有在急性冠状动脉综合征 (ACS) 患者中被证明.
研究的目的:
- 为了研究血类固醇水平和血栓生成标志物之间的关联,在患者呈现ACS.
- 为了确定同类氨酸是否有助于在ACS.中观察到的原血栓状态.
主要方法:
- 招募了117名患有ACS (急性心肌梗塞或不稳定的胸痛) 的患者和18名对照患者.
- 用高性能液态染色学和ELISA测量了血同类,VIIa因子和前热血片段F1+2.
- 在ACS和对照组中分析了这些标记物之间的相关性.
主要成果:
- 与对照组相比,患有ACS的患者表现出较高的前列血片段F1+2和因子VIIa.
- 在ACS患者中,更高的同类半氨酸水平与F1+2和因子VIIa的逐步增加有关.
- 在ACS患者中,同类氨酸与F1+2,同类氨酸与F1+2和F1+2与FACTOR VIIa,以及F1+2与FACTOR VIIa之间发现了显著的正相关性.
结论:
- 血homocysteine的升高与ACS患者中血栓生成标志物的增加显著相关.
- 这些发现表明,同类半氨酸可能在ACS中观察到的原血栓效应中起因作用.
- 这项研究提供了一种潜在的机制,解释了在急性冠状动脉综合征的背景下,同类半氨酸的原血栓性影响.
相关概念视频
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
2.6K
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...
2.6K
01:20Extrinsic and Intrinsic Pathways of Hemostasis
10.9K
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...
10.9K
01:19Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
943
The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
943
01:30Acute Coronary Syndrome III: Diagnostic Studies
495
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
495
01:30Venous Thrombosis I: Introduction
822
Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
822
01:29Venous Thrombosis III: Interprofessional Care
482
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
482