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Updated: May 29, 2026
A Rat Carotid Balloon Injury Model to Test Anti-vascular Remodeling Therapeutics
Published on: September 19, 2016
Laser-induced carotid artery injury model in the rat for therapeutic agent screening
Chin-Hsien Chang1, Kuo-Ti Chen, Chang-Jer Wu
1Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan.
Abstract:
The aims of this study were to establish a rat model of carotid artery injury and to evaluate its suitability for evaluating therapeutic agents active against endothelial proliferation. Wistar-Kyoto rats were injected intravenously with the photochemically reactive dyes rose bengal or Evans blue, and the carotid artery was then focally irradiated with laser light of the appropriate wavelength. Histological sections of the carotid artery were analyzed to determine the appropriate parameters for this model. Ferulic acid was used to assess the suitability of this model for drug screening. No animal died as a result of the photochemical treatment. Endothelial proliferation in the carotid artery was observed in rats injected with rose Bengal and exposed to green laser light. Ferulic acid (400 mg/kg per day) significantly (p<0.05) reduced endothelial proliferation in the carotid artery 28 days after injury in dye-treated animals compared with vehicle-treated animals. This simple experimental rat model is suitable for studying factors inhibiting endothelial thickening after vessel damage and for developing therapeutic strategies active against endothelial proliferation.
Insights
This study developed a rat carotid artery injury model using rose bengal dye and laser light. Ferulic acid treatment significantly reduced endothelial proliferation, validating the model for testing anti-proliferative drugs.
Area of Science:
- Vascular Biology
- Pharmacology
Background:
- Endothelial proliferation contributes to vascular diseases.
- Developing reliable models for testing therapeutic agents is crucial.
Purpose of the Study:
- Establish a rat carotid artery injury model.
- Evaluate the model's suitability for screening drugs targeting endothelial proliferation.
Main Methods:
- Wistar-Kyoto rats received rose bengal or Evans blue intravenously.
- Carotid arteries were irradiated with laser light.
- Histological analysis assessed endothelial proliferation.
- Ferulic acid was used to test drug efficacy.
Main Results:
- Photochemical treatment successfully induced endothelial proliferation in the carotid artery.
- Ferulic acid (400 mg/kg/day) significantly inhibited endothelial thickening 28 days post-injury (p<0.05).
- The model demonstrated safety with no animal mortality.
Conclusions:
- A simple, effective rat model for carotid artery injury was established.
- This model is suitable for studying inhibitors of endothelial thickening.
- The model can be used for developing therapeutic strategies against endothelial proliferation.
