Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 404223
Title Specific coronary drug-eluting stents interfere with distal microvascular function after single stent implantation in pigs.
Author(s) Heuvel, M. van den; Sorop, O.; Batenburg, W.W.; Bakker, C.L.; Vries, R. de; Koopmans, S.J.; Beusekom, H.M.M.; Duncker, D.J.; Danser, A.H.J.; Giessen, W.J.
Source JACC: cardiovascular interventions 3 (2010)7. - ISSN 1936-8798 - p. 723 - 730.
DOI http://dx.doi.org/10.1016/j.jcin.2010.05.003
Department(s) Livestock Research
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) arteries in-vivo - endothelial dysfunction - hyperpolarizing factors - hydrogen-peroxide - s-nitrosothiols - sirolimus - paclitaxel - bradykinin - inhibition - dilation
Abstract Objectives The aim of this study was to compare the effects of single drug-eluting stents (DES) on porcine coronary function distal to the stent in vivo and in vitro. Background The mechanism of endothelial dysfunction occurring in human coronary conduit arteries up to 9 months after DES implantation is unknown. Methods A sirolimus-eluting stent (SES), paclitaxel-eluting stent (PES), and a bare-metal stent (BMS) were implanted in the 3 coronary arteries of 11 pigs. After 5 weeks, in vivo responses in distal coronary flow to different doses of bradykinin (BK) and nitrates were measured. In vitro, vasodilation to BK and nitrates, as well as vasoconstriction to endothelin (ET)-1 were assessed in both distal coronary conduit and small arteries. In addition, contributions of nitric oxide (NO) and endothelium-derived hyperpolarizing factors (EDHFs) and cyclic guanosine monophosphate (cGMP) responses to BK-stimulation were determined in vitro. Results Both DES did not alter in vivo distal vasomotion. In vitro distal conduit and small arterial responses to BK were also unaltered; DES did not alter the BK-induced increase in cGMP. However, after NO synthase blockade, PES showed a reduced BK-response in distal small arteries as compared with BMS and SES (p <0.05). The ET-1–induced vasoconstriction and vascular smooth muscle cell function were unaltered. Conclusions In this study of single stenting in healthy porcine coronaries for 5 weeks, SES did not affect distal coronary vascular function, whereas PES altered distal endothelial function of small arteries under conditions of reduced NO bioavailability. Therefore, specifically the EDH-component of microvascular function seems affected by PES.
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