相关实验视频

Updated: Jun 15, 2025

In Vitro Microfluidic Disease Model to Study Whole Blood-Endothelial Interactions and Blood Clot Dynamics in Real-Time

In Vitro Microfluidic Disease Model to Study Whole Blood-Endothelial Interactions and Blood Clot Dynamics in Real-Time

Published on: May 24, 2020

在干扰的流动下,在古怪和异质的新极度增生症中,早期的血栓形成是必要的

Hualong Bai¹, Zhuo Li¹, Weichang Zhang¹

¹Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, Connecticut, USA; Department of Surgery, Yale School of Medicine, New Haven, Connecticut, USA.

Journal of thrombosis and haemostasis : JTH

|August 22, 2024

概括

早期的血栓形成是引起动脉静脉管 (AVF) 在流动干扰条件下的异常新极度增生症 (NIH) 的关键. 这一发现对于理解AVF衰竭和开发向疗法至关重要.

科学领域:

血管生物学血管生物学
心血管研究的心血管研究.
生物医学工程生物医学工程

背景情况:

新阴极性增生症 (NIH) 是动脉静脉 (AVF) 衰竭的主要原因.
与动脉和静脉系统不同,抗凝血和抗血小板疗法在预防AVF中的NIH方面是无效的.
在AVFs的近静脉流动区域经历了流动干扰,与本土动脉和静脉中的层状流动形成鲜明对比.

研究的目的:

调查早期血栓形成在异常和异质NIH的发展中的作用.
测试血栓形成是NIH在扰乱流环境中开发的先决条件的假设.

主要方法:

在小鼠 (C57BL/6,PF4-Cre × mT/mG报告员) 和老鼠 (Wistar) 中创建了AVF.
分析了人类AVF样本 (基底静脉转移).
组织学,免疫光学,免疫组织化学和面部染色被用于组织检查.

主要成果:

在小鼠和人类AVF中,扰乱的流动导致了古怪和异质的NIH.
不适应的静脉壁表现出异质的新密度,含有不同数量的血栓和光滑肌肉细胞.
在经历流动干扰的AVF中,在内皮细胞损失的区域观察到血小板沉积,这有助于NIH.

结论:

早期的血栓形成显著促进了异质NIH在流动干扰的AVF的发展.
干扰的流量,广泛的内皮细胞损失和血栓形成是推动异常和异质NIH的关键因素.
将AVF壁作为适应或不适应的分类可能会指导未来针对NIH的治疗策略.

关键词:

动脉静脉状囊动脉静脉状囊干扰了流动的干扰.新的亲密关系血小板血小板血小板是什么?血栓形成的原因是因为血栓.

更多相关视频

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

相关概念视频

Clot Retraction and Fibrinolysis

Clot Retraction and Fibrinolysis

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.

Regulation of Angiogenesis and Blood Supply

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...

Formation of the Platelet Plug

Formation of the Platelet Plug

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...