Vascular response towards biodegradable sirolimus-eluting polymeric scaffolds in the porcine model

Autor: Kischkel Sabine, Bünger Carsten M., Püschel Anja, Schareck Wolfgang, Schmitz Klaus-Peter, Grabow Niels
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Current Directions in Biomedical Engineering, Vol 4, Iss 1, Pp 465-467 (2018)
Druh dokumentu: article
ISSN: 2364-5504
DOI: 10.1515/cdbme-2018-0111
Popis: In this study, PLLA-based sirolimus-eluting polymer scaffolds and permanent bare-metal stents (316L) were implanted interventionally into both common carotid arteries (CCA) of 6 female pigs via the left common iliac artery (8F-sheath). The pigs were administered dual antiplatelet drugs peroral starting 3 days before the procedure until the end of the study. Stented CCA segments were explanted after 12 weeks, and processed for quantitative histomorphometry, and estimation of vascular inflammation and injury scores. SIR/polymer scaffolds showed a decreased residual lumen area and higher restenosis after 12 weeks (4.45 ± 2.23 mm² and 61.68 ± 22.39%) as compared to the 316L reference stent (16.53 ± 1.23 mm² and 6.65 ± 1.30%). After 12 weeks, inflammation score and vascular injury score were higher in the SIR/polymer group (1.90 ± 1.15 and 1.26 ± 0.87) compared to the 316L group (0.57 ± 0.37 and 0.83 ± 0.34).
Databáze: Directory of Open Access Journals