| Title | Biocompatibility of phosphorylcholine coated stents in normal porcine coronary arteries |
|---|---|
| Published in | Heart, Vol. 83, No. 3, p.338-345. ISSN 1355-6037. |
| Author | Whelan, D.M. (Deirdre); Krabbendam, S.C.; Verdouw, P.D. (Pieter); Serruys, P.W.J.C. (Patrick); Vliet, van E.A.; Giessen, van der W.J. (Wim); Beusekom, van H.M.M. (Heleen) |
| Date | 2000-01-01 |
| Language | English |
| Type | article |
| Abstract | OBJECTIVE: To improve the biocompatibility of stents using a phosphorylcholine coated stent as a form of biomimicry. INTERVENTIONS: Implantation of phosphorylcholine coated (n = 20) and non-coated (n = 21) stents was performed in the coronary arteries of 25 pigs. The animals were killed after five days (n = 6), four weeks (n = 7), and 12 weeks (n = 8), and the vessels harvested for histology, scanning electron microscopy, and morphometry. MAIN OUTCOME MEASURES: Stent performance was assessed by studying early endothelialization, neointima formation, and vessel wall reaction to the synthetic coating. RESULTS: Stent thrombosis did not occur in either group. Morphometry showed no significant differences between the two study groups at any time point. At five days both the coated and non-coated stents were equally well endothelialised (91% v 92%, respectively). At four and 12 weeks there was no difference in intimal thickness between the coated and non-coated stents. Up to 12 weeks postimplant the phosphorylcholine coating was still discernible in the stent strut voids, and did not appear to elicit an adverse inflammatory response. CONCLUSION: In this animal model the phosphorylcholine coating showed excellent blood and tissue compatibility, unlike a number of other polymers tested in a similar setting. Given that the coating was present up to 12 weeks postimplant with no adverse tissue reaction, it may be a potential candidate polymer for local drug delivery. |
| Publication | http://hdl.handle.net/1765/8355 |
| Persistent Identifier | urn:NBN:nl:ui:15-1765/8355 |
| Metadata | XML |
| Repository | Erasmus University Rotterdam |
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