Document Detail


Assessment of stent strut endothelialization in iliac arteries of rabbits.
MedLine Citation:
PMID:  23152288     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Fast post-implantation stent endothelialization is desirable for theoretically reducing the possibility of stent thrombosis. OBJECTIVE: To evaluate the extent of sirolimus-eluting stent strut endothelialization (delivered from the luminal and abluminal aspects or abluminal aspect only) in the iliac arteries of rabbits. METHODS: The iliac arteries of 10 rabbits were implanted with four sirolimus-eluting stents in the luminal and abluminal aspects, three sirolimus-eluting stents in the abluminal aspect, six polymer-coated stents, and four uncoated stents. After four weeks, the rabbits were euthanized and scanning electron microscopy was performed to quantify the area of exposed stent strut as well as the percentage of endothelialization. RESULTS: The area (mean ± SD) (mm²) of exposed uncoated stent struts, polymer-coated stents, sirulimus-eluting stent in the abluminal and luminal aspects and sirolimus-eluting stent in the abluminal aspect was 0.12 ± 0.08, 0.09 ± 0.12, 0.60 ± 0.67 and 0.05 ± 0.04, respectively (p = 0.120). The percentage of endothelialization (mean ± SD) (%) of uncoated stents, polymer-coated stents, sirolimus-eluting stents in the luminal and abluminal aspects and sirolimus-eluting stents in the abluminal aspect was 99 ± 01, 99 ± 0. 97 ± 03 and 99 ± 0, respectively (p = 0.133). CONCLUSION: After four weeks of implantation in the iliac arteries of rabbits, both the sirolimus-eluting stents in the luminal plus abluminal aspects and those in the abluminal aspect only showed stent strut endothelialization rates similar to those of the other types of non-drug eluting stents.
Authors:
Celso Kiyochi Takimura; Ii-Sei Watanabe; Francisco Rafael Martins Laurindo; Paulo Sampaio Gutierrez; Vera Demarchi Aiello; Spero Penha Morato; Pedro Alves Lemos Neto
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-16
Journal Detail:
Title:  Arquivos brasileiros de cardiologia     Volume:  -     ISSN:  1678-4170     ISO Abbreviation:  Arq. Bras. Cardiol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421031     Medline TA:  Arq Bras Cardiol     Country:  -    
Other Details:
Languages:  ENG; POR     Pagination:  -     Citation Subset:  -    
Affiliation:
Hospital das Clínicas, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
Vernacular Title:
Avaliação da endotelização de hastes de stents em artérias ilíacas de coelhos.
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