相关实验视频
Updated: Jan 27, 2026

08:22
A Preclinical Model of Exertional Heat Stroke in Mice
Published on: July 1, 2021
4.3K
临床前的大血管阻塞中风模型:卡皮巴拉斯 (Hydrochoerus)
Diogo C Haussen1, Srikant Rangaraju1, Alhamza Al-Bayati1
1Emory University/Grady Memorial Hospital - Marcus Stroke and Neuroscience Center Atlanta GA.
Stroke (Hoboken, N.J.)
|January 26, 2026
概括
巴拉是研究大血管封闭性中风和测试血栓切除装置的有希望的新动物模型. 这项研究探讨了它在神经干预方面的潜力,并展示了它在支架回收器 (stent-retriever) 上的可行性.
科学领域:
- 神经科学是一个神经科学.
- 比较解剖学的比较解剖学
- 血管生物学 血管生物学
背景情况:
- 在临床前研究中,现有的大血管封闭 (LVO) 卒中模型存在重大局限性.
- 巴拉 (Hydrochoerus hydrochoeris) 是最大的动物,拥有复杂的大脑皮层和与人类相似的大脑内血管,使其成为潜在的LVO中风模型.
研究的目的:
- 评价卡皮巴拉作为大血管封闭中风和神经干预的新型临床前模型.
- 为了评估内血管血栓切除手术在卡比巴拉大脑血管系统中的可行性.
主要方法:
- 常规血管造影是在一个18个月大的鱼身上进行的.
- 在内血管中评估了微导管导航和支架取回器部署/撤回.
- 经过使用线圈栓塞的短暂大血管封闭后,评估了勒普托门关节附带模式.
- 在术后确定了心脏病的地形.
主要成果:
- 微导管导航成功,并在中脑动脉和基底动脉中部署支架取回器 (3毫米).
- 45分钟的过渡性线圈封闭导致内脏脱皮 (覆盖率<5%),但保留了更深层的动脉层.
- 组织病理学揭示了前额皮质,丘脑和海马体的神经元损伤.
- 在西尔维亚水库中观察到脑下关节下出血.
结论:
- 鱼作为神经干预的动物模型具有显著的前景,特别是在大血管阻塞中风研究中.
- 建议进行进一步的验证研究,以充分建立血栓切除术研究的卡皮巴拉模型.
相关概念视频
Preclinical Development: Overview
5.9K
Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
5.9K
Structure of Blood Vessels
9.1K
Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
9.1K
Anatomy of Blood Vessels
2.7K
The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta,...
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta,...
2.7K
Overview of Blood Vessels
10.2K
The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
10.2K
Development of Blood Vessels
1.4K
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
1.4K
Regulation of Stroke Volume
4.8K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
4.8K

