Key result
In a porcine model, biodegradable biolimus-eluting and durable everolimus-eluting stents demonstrated significantly lower inflammatory scores at 3 months compared to sirolimus-eluting stents (P=0.001).
Why the study?
Does biodegradable polymer-based biolimus-eluting stent improve vascular response and biocompatibility compared to durable polymer-based sirolimus- and everolimus-eluting stents in a porcine coronary model?
Population
Porcine coronary artery model (n=12 animals total, 6 sacrificed at 3 months and 6 at 6 months)
Comparison
Biodegradable polymer-based biolimus-eluting… vs Durable polymer-based sirolimus-eluting and…
Design
Preclinical
Follow-up
up to 6 months
Authors
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Hypothesis-generating for drug-polymer interactions over degradability alone; leaves open translation to human stent selection.
Does biodegradable polymer-based biolimus-eluting stent improve vascular response and biocompatibility compared to durable polymer-based sirolimus- and everolimus-eluting stents in a porcine coronary model?
Late inflammatory reaction to drug-eluting stents depends more on the biocompatibility of the drug-metal-polymer combination than solely on polymer degradability.
Nakazawa et al. (2014) studied Coronary artery disease (porcine model) (n=12). Biodegradable polymer-based biolimus-eluting stents (BES) vs. Durable polymer-based sirolimus-eluting (SES) and everolimus-eluting (EES) stents was evaluated on Biocompatibility (vascular response, strut coverage, and inflammatory score). In a porcine model, biodegradable biolimus-eluting and durable everolimus-eluting stents demonstrated significantly lower inflammatory scores at 3 months compared to sirolimus-eluting stents (P=0.001).
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