The Effect of Shear Stress on Neointimal Response Following Sirolimus- and Paclitaxel-Eluting Stent Implantation Compared With Bare-Metal Stents in Humans

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dc.contributor.authorPapafaklis, M. I.en
dc.contributor.authorBourantas, C. V.en
dc.contributor.authorTheodorakis, P. E.en
dc.contributor.authorKatsouras, C. S.en
dc.contributor.authorNaka, K. K.en
dc.contributor.authorFotiadis, D. I.en
dc.contributor.authorMichalis, L. K.en
dc.date.accessioned2015-11-24T17:31:03Z
dc.date.available2015-11-24T17:31:03Z
dc.identifier.issn1936-8798-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/13543
dc.rightsDefault Licence-
dc.subjectdrug-eluting stent(s)en
dc.subjectneointimal thicknessen
dc.subjectpaclitaxelen
dc.subjectshear stressen
dc.subjectsirolimusen
dc.subjectintravascular ultrasound analysisen
dc.subjecthuman coronary-arteriesen
dc.subjectcell proliferationen
dc.subjectdiabetes-mellitusen
dc.subject3d reconstructionen
dc.subjectin-vivoen
dc.subjectrestenosisen
dc.subjecttrialen
dc.subjectatherosclerosisen
dc.subjecthistopathologyen
dc.titleThe Effect of Shear Stress on Neointimal Response Following Sirolimus- and Paclitaxel-Eluting Stent Implantation Compared With Bare-Metal Stents in Humansen
heal.abstractObjectives We aimed to explore the relationship of neointimal thickness (NT) to shear stress (SS) after implantation of sirolimus-eluting stents (SES) and paclitaxel-eluting stents (PES) compared with bare-metal stents (BMS). We then tested the hypothesis that drug elution attenuates the SS effect. Background Neointimal thickness after BMS implantation has been associated with SS; pertinent data for drug-eluting stents (DES) are limited. Methods Three-dimensional coronary artery and stent reconstruction was performed in 30 patients at 6-month follow-up after SES (n = 10), PES (n = 10), or BMS (n = 10) implantation. Baseline SS at the stent surface was calculated using computational fluid dynamics and NT at follow-up was computed in 3-dimensional space. Results Neointimal thickness was lower in DES versus BMS (0.03 +/- 0.07 mm vs. 0.16 +/- 0.08 mm, p < 0.001) and maximum NT was reduced in SES versus PES (0.33 +/- 0.13 mm vs. 0.46 +/- 0.13 mm, p = 0.025). In the total population, both SS (slope: -0.05 mm/Pa, p < 0.001) and DES (coefficient for DES vs. BMS: -0.17 mm, p = 0.003) were independent predictors of NT. Subgroup analysis demonstrated a significant negative relationship of NT to SS in PES (slope: -0.05 mm/Pa, p = 0.016) and BMS (slope: -0.05 mm/Pa, p = 0.001). Sirolimus elution significantly attenuated the effect of SS on NT (interaction coefficient for SES vs. BMS: 0.04 mm/Pa, p = 0.023), whereas the SS effect remained unchanged in PES (interaction coefficient for PES vs. BMS: 0.01 mm/Pa, p = 0.71). Conclusions Neointimal thickness is significantly correlated (inversely) to SS in PES as in BMS. Sirolimus elution abrogates the SS effect on the neointimal response following stent implantation, whereas the SS effect is unchanged in PES. (J Am Coll Cardiol Intv 2010;3:1181-9) (C) 2010 by the American College of Cardiology Foundationen
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1016/j.jcin.2010.08.018-
heal.identifier.secondary<Go to ISI>://000284677500012-
heal.identifier.secondaryhttp://ac.els-cdn.com/S1936879810006424/1-s2.0-S1936879810006424-main.pdf?_tid=e954590c8159279c7e56183e8d6aa978&acdnat=1339758369_e20a70a971ede19cb7ae2648cb0e899e-
heal.journalNameJacc-Cardiovascular Interventionsen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2010-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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