Permanent Cerebral Vessel Occlusion via Double Ligature and Transection

作者： Melissa F. Davis*1,2, Christopher Lay*1,2,3, Ron D. Frostig1,2,3,4 1Department of Neurobiology & Behavior,University of California, Irvine, 2The Center for the Neurobiology of Learning and Memory,University of California, Irvine, 3The Center for Hearing Research,University of California, Irvine, 4Department of Biomedical Engineering,University of California, Irvine

简介：

Overview

This article describes a reproducible method for the permanent occlusion of a major cerebral blood vessel in rodents. The technique minimizes peripheral damage and blood loss while ensuring high long-term survival rates and consistent infarct volumes.

Key Study Components

Area of Science

• Neuroscience
• Vascular occlusion techniques
• Rodent models

Background

• Permanent occlusion of cerebral vessels is crucial for studying stroke.
• Existing methods may lead to variability in infarct size and subject mortality.
• Consistent results are needed for translational research.
• This technique aims to address these issues effectively.

Purpose of Study

• To develop a reliable method for occluding a major cerebral vessel in rodents.
• To achieve consistent infarct regions with minimal variability.
• To enhance long-term survival rates in experimental subjects.

Methods Used

• Craniotomy performed above the target vessel.
• Suture passed below and around the vessel.
• Two ligatures secured around the vessel.
• Transection of the vessel between suture knots.

Main Results

• Blood flow reduction of ≥75% confirmed via imaging techniques.
• Consistent infarct regions observed in the rodent cortex.
• Limited variability in infarct size across subjects.
• Reduced subject mortality compared to existing methods.

Conclusions

• The described method provides a reliable approach for cerebral vessel occlusion.
• It offers advantages over traditional occlusion techniques.
• Results support its use in preclinical stroke research.

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