Related Experiment Video
Updated: May 15, 2026
Myocardial Infarction by Percutaneous Embolization Coil Deployment in a Swine Model
Published on: November 4, 2021
Aneurysm embolization with biologically active coils: an animal study
1Division of Neurosurgery, Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA. agrawals@unmc.edu
Objectives:
Cellular adhesion on the surface of Guglielmi detachable coils (GDC) promotes accelerated occlusion of aneurysms. We hypothesized that coils coated with transforming growth factor beta (TGF-beta) and vascular endothelial growth factor (VEGF) will promote clot organization and endothelial or cellular proliferation to facilitate closure of large experimental aneurysms relative to uncoated GDC coils.
Methods:
GDC were inserted either uncoated, coated with albumin, coated with TGF-beta (500 μg/ml) or with VEGF (500 μg/ml) into the ligated common carotid artery of adult male wistar rats for 14 days. Twenty-four adult male Wistar rats (280-300 g) were divided into four groups (n = 6 per group). Subjects were killed 2 weeks after implantation and common carotid artery (CCA) segments were harvested and coils were removed. Arterial tissue was evaluated histopathologically.
Results:
Significant differences in the proportion of aneurysm luminal area (mm(2)) was shown among Group i (0·22±0·14 SD) and Group ii (0·16±0·8 SD) compared to Group iii (0·04±0·03 SD; P<0·05), and Group iv (0·02±0·02 SD; P<0·05) analyzed 2 weeks postoperatively. Light microscopy showed well organized fibrous tissue formation of epithelial cells and intimal hyperplasia around the coils when using the coated GDC's (Group iii and Group iv).
Conclusion:
The result of this study suggests that the coated GDC with TGF-beta or VEGF appears beneficial in promoting endothelization, clot organization, and cellular tissue integration of the coils.
