相关实验视频
Updated: Jul 29, 2026
09:45
An Isolated Working Heart System for Large Animal Models
Published on: June 11, 2014
30.9K
现场心脏输液:一种新的平台,用于在人类心脏中测试心血管治疗方法
John Onsy Louca1,2,3, Magnus Althage4, Marco Öchsner3
1Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, The University of Cambridge, Cambridge, Cambridgeshire, UK.
JHLT open
|August 1, 2025
概括
这项研究测试了AZD8601,一种用于VEGF-A的新型mRNA疗法,在被扩展的人类心脏中进行测试. 该疗法成功地增加了心肌中的VEGF-A蛋白水平,显示了新的心肌病治疗的潜力.
科学领域:
- 心脏病学 心脏病学
- 分子生物学分子生物学
- 再生医学是一种再生医学.
背景情况:
- 从心脏移植接受者的心脏提供了心肌病研究的模型.
- 外置心脏输液可以进行受控的生理和生化实验.
- 在EPICCURE临床试验中,AZD8601,一种用于VEGF-A的新型modRNA,已证明其安全性.
研究的目的:
- 评估 ex situ 透式开拓人心的实用性,以测试新型治疗方法.
- 在使用AZD8601.1的人类心肌病模型中评估VEGF-A的表达.
主要方法:
- 在心脏移植过程中被剥离的人类心脏被输送到 ex situ 6 小时.
- AZD8601 (高剂量和低剂量) 被注射到心肌中部的左心室.
- 输液后活检通过免疫组织化学分析了VEGF-A蛋白水平.
主要成果:
- 在AZD8601注射部位的下内心和心肌中部观察到VEGF-A蛋白水平升高.
- 低剂量和高剂量AZD8601都显著增加了心肌中VEGF-A蛋白度.
结论:
- 这项研究建立了一个新的实验模型,使用现场注射患病的人类心脏.
- 这些发现支持AZD8601在心血管疾病中的治疗应用的潜力.
- 该模型推进了新疗法的测试,基于EPICCURE试验的安全数据.
相关概念视频
01:30Pulse rhythm
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
01:11Pulse Assessment Sites
Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
01:21Sites for measuring blood pressure
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:30Equipments Used To Measure Blood Pressure
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:26Exercise Stress Test
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
01:21Cardiac Catheterization II: Right Heart Catheterization
Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...