Rykowska Iwona, Nowak Iwona, Nowak Rafał, Michałkiewicz Ola
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
Department of Ophthalmology, Józef Struś City Hospital, Szwajcarska 3, 61-285 Poznań, Poland.
Molecules. 2025 Jun 10;30(12):2542. doi: 10.3390/molecules30122542.
Ocular drug delivery presents a persistent clinical challenge due to the protective anatomical structure of the eye, physiological barriers such as reflex blinking, and continuous tear fluid turnover. These factors significantly limit the bioavailability of topically applied medications, reducing the therapeutic effectiveness of conventional formulations, such as eye drops, ointments, and suspensions, particularly in the management of chronic ocular disorders, including dry eye syndrome, diabetic retinopathy, and age-related macular degeneration. Drug-eluting contact lenses (DECLs) offer a promising alternative, enabling sustained, localized, and controlled drug release directly at the ocular surface. While several reviews have addressed contact lenses as drug delivery platforms, this work provides a distinct perspective by focusing specifically on biodegradable polymer-based systems. Emphasis is placed on recent advances in the design and fabrication of DECLs using natural and synthetic biodegradable polymers, which offer superior biocompatibility, customizable degradation kinetics, and the capacity for programmable drug release. This review discusses the selection criteria for polymer matrices, strategies for drug incorporation, and key factors influencing release profiles. Moreover, this study highlights innovative methodologies and therapeutic approaches that differentiate it from the existing literature, providing a timely and comprehensive resource for researchers developing next-generation polymeric ocular drug delivery systems.
由于眼睛的保护性解剖结构、诸如反射性眨眼等生理屏障以及泪液的持续更新,眼部给药一直是一项临床挑战。这些因素显著限制了局部应用药物的生物利用度,降低了传统制剂(如滴眼液、眼膏和混悬剂)的治疗效果,尤其是在治疗慢性眼部疾病(包括干眼症、糖尿病视网膜病变和年龄相关性黄斑变性)方面。药物洗脱隐形眼镜(DECL)提供了一种有前景的替代方案,能够在眼表直接实现持续、局部和可控的药物释放。虽然已有几篇综述将隐形眼镜作为药物递送平台进行了阐述,但本研究通过特别关注基于可生物降解聚合物的系统提供了独特的视角。重点在于使用天然和合成可生物降解聚合物设计和制造DECL的最新进展,这些聚合物具有卓越的生物相容性、可定制的降解动力学以及可编程药物释放的能力。本综述讨论了聚合物基质的选择标准、药物载入策略以及影响释放曲线的关键因素。此外,本研究突出了使其有别于现有文献的创新方法和治疗途径,为开发下一代聚合物眼部给药系统的研究人员提供了及时且全面的资源。
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