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Model of Ischemia and Reperfusion Injury in Rabbits
Published on: November 3, 2023
A new ischemic model using a radiofrequency wire electrode in a rabbit hindlimb
Hye Won Baik1, Byung Kook Kwak, Hyung Jin Shim
1Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, South Korea. hyewonbaik@hanmail.net
Cardiovascular and Interventional Radiology
|February 16, 2008
Summary
Researchers developed a reproducible rabbit hindlimb ischemia model using radiofrequency ablation (RFA) with a specialized wire. This method effectively creates and measures limb ischemia, aiding future research into blood flow restoration and angiogenesis.
Area of Science:
- Vascular Surgery
- Medical Devices
- Animal Models
Background:
- Ischemic rabbit hindlimb models are crucial for studying peripheral artery disease.
- Existing models may have limitations in reproducibility or measurement.
Purpose of the Study:
- To establish a reproducible and measurable ischemic rabbit hindlimb model.
- To utilize radiofrequency ablation (RFA) with a novel wire electrode for inducing ischemia.
Main Methods:
- Seven New Zealand white rabbits underwent endovascular RFA using a polytetrafluoroethylene-coated wire.
- Ischemia was induced in the left superficial femoral artery.
- Assessments included clinical findings, angiography, CT perfusion, and permeability surface up to 6 weeks post-RFA.
Main Results:
- Angiography confirmed complete arterial obstruction from the iliac to femoral artery.
- A significant positive correlation was observed between the angiogenic score and angiogenesis (r = 0.86, p < 0.0001).
- CT perfusion and permeability surface ratios decreased initially, then gradually increased, indicating vascular recovery.
Conclusions:
- Endovascular RFA with an RF wire electrode is a viable method for creating a reproducible ischemic rabbit hindlimb model.
- This model allows for measurable assessment of ischemia and subsequent angiogenic responses.
