Document Type
Article
Language
eng
Format of Original
7 p.
Publication Date
3-2005
Publisher
Elsevier
Source Publication
Journal of Pharmacological and Toxicological Methods
Source ISSN
1056-8719
Original Item ID
doi: 10.1016/j.vascn.2004.08.001
Abstract
Neointimal hyperplasia remains an important problem after stent implantation. Previous investigations examining vascular responses to stent implantation and effects of drugs have used a retrograde deployment approach that may inadvertently alter the local fluid dynamics surrounding the stent. We present a model of antegrade iliac artery stent implantation that facilitates the analysis of stent-induced alterations in neointimal hyperplasia and wall shear stress in vivo. Methods: Stent delivery catheters were inserted through the left carotid artery in anesthetized rabbits (n=37). Catheters were advanced under fluoroscopic guidance to the distal iliac arteries, where the stent was deployed. Hemotoxylin and eosin (H&E) staining of unstented and stented vascular sections was performed 21 days after implantation. Results: Selective unilateral stent implantation was successful in 32 of 37 rabbits. No histological abnormalities were observed in the aorta, contralateral unstented iliac, or distal femoral arteries. Neointimal hyperplasia was localized to the stented region. Discussion: The model of stent implantation was relatively easy to perform and produced selective neointimal hyperplasia within the stented region without evidence of damage, cellular proliferation, or flow disruption in the surrounding normal arterial vessels. The model will allow detailed examination of the influence of stent implantation on indices of wall shear stress, neointimal hyperplasia, the mechanisms of cellular proliferation in vivo, and their modification by drugs.
Recommended Citation
LaDisa, John F.; Meier, Heidi T.; Olson, Lars E.; Kersten, Judy R.; Warltier, David C.; and Pagel, Paul S., "Antegrade Iliac Artery Stent Implantation for the Temporal and Spatial Examination of Stent-Induced Neointimal Hyperplasia and Alterations in Regional Fluid Dynamics" (2005). Biomedical Engineering Faculty Research and Publications. 215.
https://epublications.marquette.edu/bioengin_fac/215
ADA Accessible Version
Comments
Accepted version. Journal of Pharmacological and Toxicological Methods, Vol. 51, No. 2 (March-April 2005): 115-121. DOI. © 2005 Elsevier. Used with permission.