Comparison of endothelium-dependent and -independent vasomotor response after abluminal biodegradable polymer biolimus-eluting stent and persistent polymer everolimus-eluting stent implantation (COMPARE-IT)

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• 作者：Serban Puricel ; ¹ ; ^{serbanpuricel@icloud.com" class="auth_mail" title="E-mail the corresponding author} ; Zacharenia Kallinikou¹ ; Jaqueline Espinola ; Diego Arroyo ; Jean-Jacques Goy ; Jean-Christophe Stauffer ; Gé ; rard Baeriswyl ; Pieter Cornelis Smits ; Sté ; phane Cook ; Mario Togni
• 关键词：Biolimus-eluting stent ; Everolimus-eluting stent ; Coronary artery disease ; Endothelial function
• 刊名：International Journal of Cardiology
• 出版年：2016
• 出版时间：1 January 2016
• 年：2016
• 卷：202
• 期：Complete
• 页码：525-531
• 全文大小：726 K

文摘

Drug-eluting stents (DES) have been associated with local endothelial dysfunction in the segments proximal and distal to the stent (peristent segments) and increased thrombotic risk in long term follow-up. Little data exists on endothelial function post-implantation of new DES with biodegradable polymer. The aim of our study was to compare the local endothelial function assessed by exercise induced coronary vasomotion after implantation of a biolimus A9-eluting stent with biodegradable polymer (BES) with an everolimus-eluting stent with durable polymer (EES).

Methods

Coronary vasomotion was evaluated with quantitative coronary angiography at rest and during supine bicycle exercise in nine patients with EES and thirteen patients with BES, 16 months after stent implantation. Mean luminal diameter of the stent, peristent segments, and of a control vessel were determined at rest, during exercise, and after the administration of nitroglycerine.

Results

The control vessel showed exercise-induced vasodilatation in both groups (EES: + 6.4 ± 5.5%, p = 0.07; BES: + 7.8 ± 10.1%, p = 0.07). Vasomotion in the stented vessel segment was abolished. There was exercise-induced vasoconstriction in both groups in the segments proximal (EES: − 9.6 ± 4.5%; p = 0.03; BES: − 4.3 ± 5.4%, p = 0.02) and distal to the stent (EES: − 3.2 ± 9.3%; p = 0.41, BES − 8.6 ± 8.0%, p < 0.01). Sublingual nitroglycerin was associated with maximal vasodilatation of the peristent segments in both groups.

Conclusion

Alike DES with durable polymer, stents with a biodegradable polymer are associated with exercise-induced paradoxical coronary vasoconstriction of the peristent segments. This data suggests that endothelial dysfunction after DES implantation is not primarily caused by the durability of the polymer coating.