Effect of sequential release of sirolimus and rosuvastatin using silk fibroin microneedle to prevent intimal hyperplasia - 11/11/23

Abstract |
Intimal hyperplasia (IH) is a major cause of vascular restenosis after bypass surgery, which progresses as a series of processes from the acute to chronic stage in response to endothelial damage during bypass grafting. A strategic localized drug delivery system that reflects the pathophysiology of IH and minimizes systemic side effects is necessary. In this study, the sequential release of sirolimus, a mechanistic target of rapamycin (mTOR) inhibitor, and statin, an HMG-COA inhibitor, was realized as a silk fibroin-based microneedle device in vivo. The released sirolimus in the acute stage reduced neointima (NI) and vascular fibrosis through mTOR inhibition. Furthermore, rosuvastatin, which was continuously released from the acute to chronic stage, reduced vascular stiffness and apoptosis through the inactivation of Yes-associated protein (YAP). The sequential release of sirolimus and rosuvastatin confirmed the synergistic treatment effects on vascular inflammation, VSMC proliferation, and ECM degradation remodeling through the inhibition of transforming growth factor (TGF)-beta/NF-κB pathway. These results demonstrate the therapeutic effect on preventing restenosis with sufficient vascular elasticity and significantly reduced IH in response to endothelial damage. Therefore, this study suggests a promising strategy for treating coronary artery disease through localized drug delivery of customized drug combinations.
Le texte complet de cet article est disponible en PDF.Graphical Abstract |
Highlights |
• | Sequential release of sirolimus and rosuvastatin as a silk-fibroin microneedle device. |
• | Drug released via external vascular device suitably absorbed into localized lesion. |
• | Perivascular device is promising intensive drug delivery to the lesion. |
• | Strategy to prevent IH through the understanding of key signaling pathways at each stage. |
• | The safety of drug toxicity by delivering the drug to the target lesion rather than by systemic diffusion. |
Abbreviations : DDS, ECM, HMG-CoA, IH, mTOR, MN, NI, NF-κB, TNF-α, TGF-β, VSMC, YAP
Keywords : Intimal hyperplasia, Bypass surgery, Microneedle, Silk fibroin, Localized drug delivery
Plan
Vol 168
Article 115702- décembre 2023 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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