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相关概念视频

Structure and Function of Platelets01:18

Structure and Function of Platelets

1.1K
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...
1.1K
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

5.7K
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...
5.7K
Clot Retraction and Fibrinolysis01:16

Clot Retraction and Fibrinolysis

5.4K
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.
5.4K

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相关实验视频

Updated: Jun 21, 2025

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
05:49

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Published on: November 29, 2024

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来自一个小分子的同心空心的多六角血小板.

Chenglong Liao1,2, Yanjun Gong1,2, Yanxue Che3

  • 1Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.

Nature communications
|July 6, 2024
PubMed
概括

研究人员创建了空洞的二维有机血小板,其宽度和细分可调节. 这种新的制造方法使用选择性氧化和溶解,使光电子学中的新应用成为可能.

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Live-cell Imaging of Platelet Degranulation and Secretion Under Flow
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Live-cell Imaging of Platelet Degranulation and Secretion Under Flow

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Microfluidics in Assessing Platelet Function

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相关实验视频

Last Updated: Jun 21, 2025

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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

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Live-cell Imaging of Platelet Degranulation and Secretion Under Flow
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科学领域:

  • 材料科学 材料科学 材料科学
  • 有机化学 有机化学
  • 纳米技术纳米技术

背景情况:

  • 从小型有机分子中创建定义良好的空心二维结构是具有挑战性的.
  • 控制这些结构中的宽度和段数特别困难.

研究的目的:

  • 报告一种新的方法,用于制造具有可编程宽度和细分的明确的空心2D血小板.
  • 为了证明这些结构的实用性,作为先进的石版印刷的模板.

主要方法:

  • 通过替代性两种捐赠-接受分子的异质生长来制造集中的多块2D前体.
  • 使用紫外线照射产生的单一氧气选择性氧化一个捐赠-接受分子.
  • 通过溶剂溶解选择性去除氧化部分,以创建空洞结构.

主要成果:

  • 成功地制造出具有可编程宽度和段数的精确定义的同心空心2D血小板.
  • 通过选择性氧化和溶解,证明了通过选择性氧化和溶解来创建空洞的多块2D结构的能力.
  • 利用空洞的血小板作为模板,以光刻复杂的电极与受控的间隙大小.

结论:

  • 开发的方法为精确设计的空心二维有机结构提供了一条新的途径.
  • 这些结构作为制造用于光电子应用的先进电极的多功能模板.