相关实验视频

Updated: Jul 12, 2025

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

Published on: April 27, 2016

NTPDase1/CD39 Ectonucleotidase 对于正常的动脉直径适应流动是必要的

Julie Favre¹, Charlotte Roy¹, Anne-Laure Guihot¹

¹MITOVASC Institute, CARFI Facility, CNRS UMR 6015, INSERM U1083, Angers University, 49045 Angers, France.

International journal of molecular sciences

|October 28, 2023

概括

乙核酶CD39 (NTPDase1) 通过控制纯能信号传递,在调节动脉直径方面发挥着至关重要的作用. 缺乏CD39的小鼠对血液流量变化的血管反应受损.

科学领域:

血管生物学血管生物学
心血管生理学心血管生理学
纯能信号传递的功能

背景情况:

乙核酸酶CD39 (NTPDase1) 通过管理内皮P2受体激活,对血管血栓免疫调节至关重要.
虽然已知内皮细胞释放的ATP,但CD39在调节动脉直径方面的特定作用仍未得到充分探索.

研究的目的:

调查CD39对短期动脉直径适应和长期动脉重塑的贡献,以应对血液流动.
使用基因缺陷小鼠阐明CD39在流量介导血管反应中的作用.

主要方法:

使用了雄性淘汰赛小鼠及其野生类型的 littermates.
使用隔离动脉制剂评估了各种动脉 (大动脉,介质,冠状动脉) 的内皮依赖放松.
通过压力肌图测量了急性流量介导扩张,并在体内慢性增加剪切应力后评估了动脉重塑.
在隔离的 perfused 心脏中分析了冠状动脉输出.

主要成果:

Entpd1小鼠在导电性和抵抗性动脉中表现出对ATP的潜在血管松.
乙胆诱导的放松在Entpd1小鼠中发生了改变,在主动脉中超正常化,但阻力动脉减少.
在Entpd1小鼠中,急性流媒扩张显著减少,外向动脉重塑被改变.
与野生类型相比,Entpd1小鼠的冠状动脉输出减少了.

结论:

CD39是内皮依赖性动脉直径适应血液流量的短期和长期变化的关键调节者.
由CD39介导的纯能信号传递对于维持血管对血液动力学刺激的正常反应至关重要.

关键词:

这就是ATPATPATP ATP.在 NTPDase1/CD3939 中.通过流体介导的血管扩张.剪切压力的压力.血管改造血管改造血管改造

更多相关视频

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research

Published on: October 22, 2014

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology

Published on: February 7, 2015

相关概念视频

Transducer Mechanism: Enzyme-Linked Receptors

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:

Nitric Oxide Signaling Pathway

Nitric Oxide Signaling Pathway

Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...

Autoregulation of Blood Flow

Autoregulation of Blood Flow

Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....

Arteries and Arterioles

Arteries and Arterioles

Arteries, the vasculature responsible for transporting blood from the heart, possess robust walls capable of enduring the elevated pressures exerted by the heartbeat. Arteries near the heart are especially thick-walled and enriched with elastic fibers across their three tunics, classifying them as elastic or conducting arteries. These arteries, usually with a diameter exceeding 10 mm, are characterized by their ability to dilate in response to the blood pumped from the heart's ventricles...