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Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model
05:32

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Published on: August 11, 2023

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Selective middle cerebral artery occlusion in the rabbit: Technique and characterization with pathologic findings and

Reza Jahan1, J Pablo Villablanca1, Robert J Harris1

  • 1Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.

Journal of Neuroscience Methods
|December 12, 2018
PubMed
Abstract

Insights

Researchers developed a reproducible rabbit model for middle cerebral artery (MCA) embolic occlusion, crucial for testing stroke therapies. This model accurately mimics human ischemic stroke progression using advanced imaging and tissue analysis.

Area of Science:

  • Neurology
  • Medical Imaging
  • Pre-clinical Research

Background:

  • Developing reliable animal models is essential for evaluating stroke therapies.
  • Ischemic stroke research requires accurate pre-clinical models.

Purpose of the Study:

  • To establish and characterize a reproducible rabbit model of middle cerebral artery (MCA) embolic occlusion.
  • To utilize multimodal MRI and histopathology for detailed analysis of the induced ischemia.

Main Methods:

  • Fluoroscopic-guided microcatheter placement for MCA occlusion using an autologous clot in French Lop rabbits.
  • Serial multimodal MRI (including ADC and FLAIR sequences) and angiography were performed.
  • Histopathologic examination of brain tissue post-mortem.

Main Results:

  • Successful and durable (>6 hours) MCA occlusion was confirmed angiographically in all subjects.
  • MRI revealed increasing ADC volume, cytotoxic edema (FLAIR hyperintensity), and blood-brain barrier disruption.
  • Histopathology confirmed edema and structural alterations consistent with infarction in the ischemic brain.

Conclusions:

  • A feasible rabbit model for embolic MCA occlusion was established and angiographically documented.
  • Serial MRI demonstrated ischemic evolution comparable to human stroke.
  • Histopathological findings validated the model's accuracy in replicating ischemic stroke characteristics.
Keywords:
AngiographyBrainEmbolicMR perfusionMRIStroke

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