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Embolic Effect of Different Cyanoacrylates: Radiological and Histological Comparison in an In Vivo Rabbit
Pierre-Olivier Comby1,2, Kévin Guillen2,3, Olivier Chevallier2,3
1Department of Neuroradiology and Emergency Radiology, Image-Guided Therapy Center, François-Mitterrand University Hospital, 21079, Dijon, France.
Cardiovascular and Interventional Radiology
|March 11, 2025
Summary
Alpha-hexyl-cyanoacrylate (AHCA) demonstrated superior uniformity and reduced intimal arteritis in rabbit renal artery embolization compared to other cyanoacrylate glues. This suggests AHCA
Area of Science:
- Interventional Radiology
- Vascular Embolization
- Biomaterials Science
Background:
- Cyanoacrylate glues are utilized for endovascular embolization.
- Different formulations may exhibit varying radiological and histological effects.
- Understanding these effects is crucial for optimizing embolization procedures.
Purpose of the Study:
- To compare radiological and histological outcomes of three cyanoacrylate glues for renal artery embolization in rabbits.
- To evaluate N-butyl cyanoacrylate (NBCA), NBCA-methacryloxysulfolane (NBCA-MS), and α-hexyl-cyanoacrylate (AHCA).
Main Methods:
- Renal arteries in rabbits were embolized using a 1:3 glue/ethiodized oil ratio.
- Micro-computed tomography (CT) assessed glue cast distribution, fragmentation, and heterogeneity.
- Histological analysis examined lumen dilatation, intimal arteritis, necrosis, and peri-arterial edema.
Main Results:
- Consistent glue penetration into interlobar and corticomedullary arteries was observed across all groups.
- Alpha-hexyl-cyanoacrylate (AHCA) showed significantly lower heterogeneity and less intimal arteritis compared to NBCA-MS.
- Severe lumen dilatation and intimal necrosis were present in all samples; peri-arterial edema showed no significant differences.
Conclusions:
- Micro-CT findings were comparable among the three glues.
- AHCA demonstrated superior cast uniformity and reduced intimal arteritis.
- AHCA shows promise for endovascular embolization applications.
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