旨在专门抑制血小板与·维勒布兰德因子相互作用的肝素
M Sobel1, K E Bird, R Tyler-Cross
1Division of Vascular Surgery, Medical College of Virginia, Virginia Commonwealth University, Richmond, USA.
Circulation
|March 1, 1996
概括
研究人员开发出更强大的肝素来阻断血小板和·威尔布兰德因子 (vWF) 相互作用,这对于预防动脉血栓形成至关重要. 这些修改后的氨酸显示出对血小板聚合和vWF结合的增强抑制.
科学领域:
- 心血管研究的心血管研究.
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 血小板与·维勒布兰德因子 (vWF) 的相互作用在心血管干预中至关重要.
- 肝素对血小板/vWF机制的干扰包括与vWF的糖蛋白Ib结合域结合.
- 现有的肝素需要精细化,以加强对血小板/vWF相互作用的抑制.
研究的目的:
- 开发和精制具有针对血小板/vWF相互作用的强度增加的肝素.
- 调查增强肝素对依赖vWF的血小板功能的抑制作用的方法.
主要方法:
- 利用vWF的肝素结合域的固定合成来进行肝素分离.
- 在标准上使用化学修饰,包括周期性氧化和化还原.
- 应用亲和染色法来分离高强度的肝素分离物.
主要成果:
- 新型肝素分离物显示抑制vWF依赖的血小板凝结和结合的效果增加了7倍.
- 经过化学修饰的肝素在抑制血小板/vWF相互作用方面表现出三倍的增强.
- 亲密性染色学产生了具有八倍更高抑制功效的氨酸,抗凝剂活性降低.
结论:
- 肝素亚种可以被设计为显著增强抑制vWF/血小板相互作用.
- 肝素的vWF抑制能力可以从其抗血素结合活性中分离出来.
- 结合亲和分离和化学修饰策略,可以产生氨酸,用于预防动脉血栓形成.
相关概念视频
Biopharmaceutical Factors Influencing Drug Product Design: Overview
289
Rational drug product design integrates knowledge of the drug’s physicochemical properties, formulation components, manufacturing techniques, and intended route of administration. Each factor influences the drug’s performance, including how it is released, absorbed, and eliminated in the body.The physicochemical properties of a drug—such as solubility, stability, and particle size—affect its compatibility with excipients and the choice of dosage form. Excipients, though...
289
Factorial Design
13.8K
Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
13.8K
Feedback Inhibition
57.2K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.2K
Factors Affecting Protein-Drug Binding: Drug Interactions
605
Drug interactions are a critical aspect of pharmacology and can occur when two or more drugs compete for the same binding site. This competition can result in one drug displacing another, altering the effect of the displaced drug. Drug interactions are complex processes that rely heavily on how much of the displacer drug is present and how strongly it can bind to the same sites as the displaced drug.
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
605
Anticoagulant Drugs: Low-Molecular-Weight Heparins
1.9K
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...
1.9K
Transcription Factors
82.8K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
82.8K


