Mouse Model of Intraluminal MCAO: Cerebral Infarct Evaluation by Cresyl Violet Staining

Overview

This article presents the intraluminal middle cerebral occlusion model in mice, a method to simulate ischemic stroke. The evaluation of cerebral infarct is conducted using a neurologic score and cresyl violet staining, which allows for parallel testing of various markers.

Key Study Components

Area of Science

• Neuroscience
• Stroke Research
• Animal Models

Background

• The transient middle cerebral artery occlusion (T-MCAO) model mimics ischemic stroke.
• It allows for the study of neurological deficits and infarct volume.
• This model is particularly useful for genetic studies in mice.
• Evaluation methods include neurologic scoring and brain staining techniques.

Purpose of Study

• To establish a reliable model for studying ischemic stroke in mice.
• To assess the neurological outcomes post-reperfusion.
• To enable the use of genetic tools for investigating target proteins in stroke.

Methods Used

• Temporary ligation of the common carotid artery and permanent ligation of the external carotid artery.
• Insertion of a silicone-coated monofilament to occlude the internal carotid artery.
• Restoration of blood flow by removing the monofilament after one hour.
• Evaluation of neurological deficits using a six-point scale at various time points post-reperfusion.

Main Results

• The model successfully mimics ischemic stroke with restoration of blood flow.
• Neurological deficits were assessed and scored at multiple intervals.
• Cresyl violet staining provided a method for quantifying infarct volume.
• The procedure demonstrated reproducibility in infarct volume measurements.

Conclusions

• The intraluminal filament technique is effective for studying ischemic stroke in mice.
• This model allows for the exploration of genetic factors influencing stroke outcomes.
• Future studies can leverage this model for therapeutic interventions.

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