大脑动脉的组成和基底动脉的起源在脊椎动物之间是不同的
Céline Salaud1,2,3, Victor Moreau4, Cyrille Decante4
1Department of Anatomy, Medicine University, Nantes, France. celine.salaud@chu-nantes.fr.
Surgical and radiologic anatomy : SRA
|March 13, 2024
概括
基底动脉 (BA) 的起源在脊椎动物之间有所不同. 非哺乳动物使用内动脉 (ICA),而哺乳动物则表现出涉及脊柱动脉 (VA) 和心动脉神奇回路的多样化模式.
科学领域:
- 比较解剖学的比较.
- 神经科学是一个神经科学.
- 兽医解剖学 兽医解剖学
背景情况:
- 内动脉解剖学,特别是基底动脉的起源,在许多脊椎动物模型中了解得很少.
- 知识差距阻碍了准确的动物模型的开发和理解人类解剖变异.
研究的目的:
- 研究和比较脑动脉解剖学,专注于基底动脉的起源,跨不同的哺乳动物和非哺乳动物物种.
- 为改进动物模型和理解人类神经血管解剖提供基础.
主要方法:
- 来自三种鸟类和八种哺乳动物的甲胺固定大脑被解剖.
- 使用红色乳注射可视化动脉系统.
- 对现有文献进行了比较分析.
主要成果:
- 在所有脊椎动物中,内动脉 (ICA) 分为头骨和尾骨分支,供给大脑.
- 非哺乳动物:尾部ICA分支形成基底动脉 (BA);脊椎动脉 (VA) 不涉及.
- 哺乳动物:观察到两种模式 - - 1) Carotid rete mirabile dominant (无动物),BA来自尾部 ICA,VA间接提供 rete. 2) 类似人类的图案,尾部ICA作为后部沟通动脉,BA来自两个VA.
结论:
- 对比分析揭示了哺乳动物和非哺乳动物之间基底动脉起源的明显模式.
- 了解这些变异对于在外科和放射学研究中选择合适的动物模型至关重要.
- 这项研究增强了对罕见的人类脑动脉变异的理解.
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