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相关概念视频

Structure and Function of Platelets01:18

Structure and Function of Platelets

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The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
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Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

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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.
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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

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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
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血小板蛋白质组学:临床影响 - 解码黑盒子!

Hadi Goubran1, Shahid Ahmed1, Gaafar Ragab2

  • 1Saskatoon Cancer Centre, Saskatoon, SK, Canada; Department of Oncology, College of Medicine, University of Saskatchewan, Saskatchewan, Canada.

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血小板蛋白质学揭示了它们在凝血之外的作用,有助于发现癌症和神经退行等疾病的生物标志物. 对于临床使用,需要进一步标准化.

关键词:
生物标志物 生物标志物癌症 癌症 癌症 癌症心脏病:心脏病是一种心脏病.感染 感染 感染神经退行发生神经退行.

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科学领域:

  • 血液学 血液学 血液学
  • 蛋白质组学是指蛋白质组学.
  • 分子生物学分子生物学

背景情况:

  • 血小板,无核血细胞,越来越多地被认为具有超出血静止的作用,包括免疫,炎症和组织修复.
  • 使用质谱的血小板蛋白质组学,提供了对血小板生物学和临床应用的见解.
  • 血小板蛋白质组学为血小板寿命中的累积生物事件提供了独特的回顾性观点.

研究的目的:

  • 探索血小板在血静之外的多方面的作用.
  • 要突出血小板蛋白学在理解血小板生物学和疾病中的应用.
  • 讨论血小板蛋白质组学在生物标志物识别和治疗开发中的潜力.

主要方法:

  • 高通量技术,主要是质谱,应用于血小板样本.
  • 对血小板蛋白质组的分析,以确定与生理和病理状态相关的蛋白质.
  • 研究血小板和其他细胞类型 (如神经元) 之间的共享分子通路.

主要成果:

  • 血小板蛋白质组学已经确定了心血管疾病,感染,自身免疫疾病和癌症的潜在生物标志物.
  • 血小板与神经元共享分子通路,涉及神经退行和衰老中的tau,粉样β和α-synuclein等蛋白质.
  • 蛋白质组学正在为基于证据的,量身定制的血小板衍生疗法的发展做出贡献.

结论:

  • 血小板蛋白质学显著提高了对血小板生物学及其临床相关性的理解.
  • 血小板蛋白质组学显示出对各种疾病和衰老研究中的生物标志物发现的希望.
  • 进一步的标准化和计算进步对于血小板蛋白质组学的临床翻译是必要的.