Suppr超能文献

建立一种可重现且微创的猪缺血性中风模型。

Establishment of a reproducible and minimally invasive ischemic stroke model in swine.

机构信息

Interventional Neuroradiology Unit, Department of Neurosciences, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.

Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute (IGTP), Universitat Autònoma de Barcelona (UAB), Badalona, Barcelona, Spain.

出版信息

JCI Insight. 2023 Apr 24;8(8):e163398. doi: 10.1172/jci.insight.163398.

Abstract

The need for advances in the management/treatment options for ischemic stroke patients requires that upcoming preclinical research uses animals with more human-like brain characteristics. The porcine brain is considered appropriate, although the presence of the rete mirabile (RM) prevents direct catheterization of the intracranial arteries to produce focal cerebral ischemia. To develop a reproducible minimally invasive porcine stroke model, a guide catheter and guide wire were introduced through the femoral artery until reaching the left RM. Using the pressure cooker technique, Squid-12 embolization material was deposited to fill, overflow, and occlude the left RM, the left internal carotid artery, and left circle of Willis wing up to the origins of the middle cerebral arteries (MCAs), mimicking the occlusion produced in the filament model in rodents. Longitudinal multimodal cerebral MRI was conducted to assess the brain damage and cerebral blood supply. The technique we describe here occluded up to the origins of the MCAs in 7 of 8 swine, inducing early damage 90 minutes after occlusion that later evolved to a large cerebral infarction and producing no mortality during the intervention. This minimally invasive ischemic stroke model in swine produced reproducible infarcts and shows translational features common to human stroke.

摘要

为了推进缺血性脑卒中患者的治疗选择,需要在未来的临床前研究中使用具有更类似人类大脑特征的动物。猪脑被认为是合适的,尽管存在网状奇迹(RM),这阻止了对颅内动脉的直接导管插入以产生局灶性脑缺血。为了开发一种可重复的微创性猪脑卒中模型,将引导导管和导丝通过股动脉引入,直到到达左侧 RM。使用高压锅技术,将鱿鱼-12 栓塞材料沉积以填充、溢出并阻塞左侧 RM、左侧颈内动脉和左侧大脑中动脉环,直至大脑中动脉的起源处,模拟在啮齿动物中的线栓模型产生的闭塞。进行了纵向多模态脑 MRI 以评估脑损伤和脑血供。我们在这里描述的技术在 8 头猪中有 7 头阻塞了大脑中动脉的起源处,在闭塞后 90 分钟诱导早期损伤,随后发展为大面积脑梗死,并且在干预过程中没有死亡率。这种微创性猪脑卒中模型可产生可重复的梗死,并显示出与人类脑卒中常见的转化特征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6ee3/10243803/a9738ecec14e/jciinsight-8-163398-g145.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验