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相关概念视频

Complement System01:27

Complement System

2.7K
The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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...
909
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

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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...
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

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Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
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Formation of the Platelet Plug01:22

Formation of the Platelet Plug

7.1K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
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相关实验视频

Updated: Sep 12, 2025

Ferric Chloride-induced Murine Thrombosis Models
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Ferric Chloride-induced Murine Thrombosis Models

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补充在抗脂综合征,时间准?

Marie-Agnès Dragon Durey1, Houcine Hamidi2, Luc Darnige3

  • 1Laboratoire d'immunologie biologique, Hôpital Européen Georges Pompidou, APHP, Paris, France; INSERM UMRS 1138, team "Inflammation, Complement and Cancer", Cordeliers Research Center, Paris, France; Université de Paris Cité, Paris, France; University Hospital Federation (FHU) COMET, Paris, France.

Current opinion in immunology
|August 7, 2025
PubMed
概括

抗脂综合征 (APS) 涉及补体系统激活,但其评估不是常规的. 确定生物标志物对于评估APS患者的新补充向疗法至关重要.

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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells

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相关实验视频

Last Updated: Sep 12, 2025

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科学领域:

  • 免疫学 免疫学 免疫学
  • 血液学 血液学 血液学
  • 自免疫性疾病 自免疫性疾病

背景情况:

  • 抗脂综合征 (APS) 是一种获得的自身免疫性疾病,其特征是血栓友.
  • 补体系统与凝血级联共享组件,在APS病理生理学中起着重要作用.
  • 尽管有证据表明APS患者的补充激活 (例如C4d,C3d,C5b9片段),但其评估不是标准的临床实践.

研究的目的:

  • 要突出补充系统激活在抗脂综合征中的确定的作用.
  • 为了强调APS患者常规补充激活评估中的当前差距.
  • 强调在APS中识别新型补充向疗法的生物标志物的必要性.

主要方法:

  • 对APS中补充系统参与的现有文献的审查.
  • 对在APS患者和受影响组织中显示补充激活片段的研究分析.
  • 评估当前的治疗策略和新兴的治疗目标.

主要成果:

  • 补体激活片段 (C4d,C3d,C5b9) 在APS中被系统检测和在受影响的组织中检测到.
  • 目前APS的标准治疗包括使用维生素K对抗剂的长期抗凝药.
  • 病例报告表明,抗C5抗体在严重的APS形式中具有潜在的疗效,但需要更多的数据.

结论:

  • 补充系统的激活是抗脂综合征病理生理学的组成部分.
  • 临床上需要验证的生物标志物来指导在APS中使用补充向疗法.
  • 需要进一步的研究来确定补充抑制剂在APS管理中的有效性和作用.