载有吲哚美辛微乳的隐形眼镜用于改善眼部药物递送和治疗效果。
Indomethacin-incorporated microemulsion-laden contact lenses for improved ocular drug delivery and therapeutic efficacy.
作者信息
Panchal Kashvi, Patel Yashkumar, Jani Harshilkumar, Dalal Mittal, Chidrawar Vijay R, Datta Deepanjan, Mohite Popat, Puri Abhijeet, Ranch Ketan, Singh Sudarshan
机构信息
Department of Pharmaceutics and Pharmaceutical Technology, L. M. College of Pharmacy Ahmedabad Gujarat 380009 India
Department of Pharmacology, L. M. College of Pharmacy Ahmedabad Gujarat 380009 India
出版信息
RSC Adv. 2025 May 14;15(20):16110-16124. doi: 10.1039/d5ra01046b. eCollection 2025 May 12.
Conventional eye drops are associated with several limitations, including rapid drug clearance and low bioavailability, with only about 5% of the administered drug reaching the cornea to demonstrate therapeutic efficacy. Thus, to address these challenges, indomethacin (IND)-loaded microemulsion (Me)-embedded soft contact lenses (CLs) were developed to improve ocular drug delivery. The D-optimal mixture design was employed to optimize the composition of the Me formulation. Independent variables included Capmul MCM (oil phase), (Tween 80/isopropyl alcohol), and water, while dependent variables were the globule size, transmittance (%), and drug release profile. The optimized Me exhibited a globule diameter of 45.69 ± 1.85 nm and a transmittance of 99.4% ± 1.59%. The globule dispersion index (PDI) was 0.33 ± 0.06, and the zeta potential (ZP) was 0.657 ± 0.012 mV. Soft CLs were developed using free radical polymerization and fortified with the Me loaded with the drug through direct loading and soaking techniques. Direct loading achieved a swelling percentage of 96.37% ± 1.8% and a transmittance of 96.5% ± 0.3%, while soaking resulted in 97.57% ± 1.4% swelling and 97.3% ± 1.3% transmittance. A drug content of 19.76 ± 0.23 μg per lenses for direct loading and 29.8 ± 0.2 μg per lenses for soaking demonstrated that the efficacy of the soaking technique was higher than that of direct loading. Moreover, drug release studies showed that the Me-laden lenses prepared using the direct loading technique released 44.00% ± 0.53% to 53.00% ± 0.59% of the drug within the first 6 h, while the lenses prepared soaking released 62.58% ± 1.56% to 97.64% ± 1.52% of the drug within the first 6 h, followed by regulated drug release for up to 28 h, maintaining clarity and drug loading. Ocular irritancy test results indicated negligible irritation, suggesting that the Me-laden lenses are a safe and effective platform to manage ocular inflammation with the controlled delivery of IND.
传统眼药水存在多种局限性,包括药物快速清除和生物利用度低,给药药物中只有约5%到达角膜以显示治疗效果。因此,为应对这些挑战,研发了载有吲哚美辛(IND)的微乳(Me)包埋软性隐形眼镜(CLs)以改善眼部药物递送。采用D-最优混合设计来优化Me制剂的组成。自变量包括Capmul MCM(油相)、吐温80/异丙醇和水,而因变量是球粒大小、透光率(%)和药物释放曲线。优化后的Me球粒直径为45.69±1.85nm,透光率为99.4%±1.59%。球粒分散指数(PDI)为0.33±0.06,zeta电位(ZP)为0.657±0.012mV。通过自由基聚合制备软性CLs,并通过直接加载和浸泡技术用载有药物的Me进行强化。直接加载的溶胀率为96.37%±1.8%,透光率为96.5%±0.3%,而浸泡导致溶胀率为97.57%±1.4%,透光率为97.3%±1.3%。直接加载时每片镜片的药物含量为19.76±0.23μg,浸泡时每片镜片的药物含量为29.8±0.2μg,这表明浸泡技术的效果高于直接加载。此外,药物释放研究表明,采用直接加载技术制备的载有Me的镜片在最初6小时内释放了44.00%±0.53%至53.00%±0.59%的药物,而采用浸泡制备的镜片在最初6小时内释放了62.58%±1.56%至97.64%±1.52%的药物,随后药物持续释放长达28小时,保持透明度和药物负载量。眼部刺激性测试结果表明刺激性可忽略不计,这表明载有Me的镜片是通过IND的控释来管理眼部炎症的安全有效平台。