纤维素氧化和血栓形成:塑造结构和功能
Francesca Nencini1, Elvira Giurranna1, Serena Borghi1
1Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Firenze, Viale Morgagni 50, 50134 Firenze, Italy.
Antioxidants (Basel, Switzerland)
|April 29, 2025
概括
氧化应激会改变纤维素原,导致更密集,更耐药的血块,增加疾病中血栓形成的风险. 了解这种相互作用可能会揭示心血管疾病的新抗氧化疗法.
科学领域:
- 生物化学 生化学
- 血液学 血液学 血液学
- 病理生理学 病理生理学
背景情况:
- 纤维素素对静血至关重要,形成纤维素凝块结构.
- 氧化应激,即反应性氧物种 (ROS) 和抗氧化剂的不平衡,会改变纤维素原的结构和功能.
- 改变的纤维素原不仅会影响凝血,还会影响免疫反应,炎症和组织修复.
研究的目的:
- 审查纤维素氧化对凝块形成,结构和降解的影响.
- 综合了体外,体外和临床研究中的纤维素氧化结果.
- 探索潜在的治疗策略,针对与纤维素原功能相关的氧化应激.
主要方法:
- 现有科学文献的叙述性审查.
- 综合了体外,外生和临床研究的数据.
- 对氧化应激对纤维素素结构和凝块特性影响的分析.
主要成果:
- 纤维素氧化产生更密集的纤维素凝块,纤维纤维较薄,透性降低,对纤维素分解的抗性增加.
- 这些变化与心血管疾病,糖尿病,炎症和癌症中的前血栓状况有关.
- 低剂量的氧化应激可能会诱导纤维素素的保护性适应,从而保持其功能,但由于实验差异,研究结果各不相同.
结论:
- 纤维素氧化显著影响凝块的结构和功能,有助于各种疾病的血栓风险.
- 针对纤维素原的氧化应激或特定的氧化部位可能会提供新的治疗途径.
- 需要进一步的研究来阐明特定的氧化机制,并将发现转化为临床实践.
相关概念视频
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
568
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...
568
01:16Clot Retraction and Fibrinolysis
3.0K
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.
3.0K
01:20Extrinsic and Intrinsic Pathways of Hemostasis
4.2K
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...
4.2K
01:24Disorders of Hemostasis
658
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.
658
03:03Amyloid Fibrils
9.1K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.1K
01:09Coagulation
3.7K
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...
3.7K