用于抑制与氧化压力相关的视网膜退化症的probucol-LCA纳米颗粒的配方和评估
Susbin Raj Wagle1, Alicia Brunet2,3, Rebekah James2,3,4
1The Biotechnology and Drug Development Research Laboratory, Curtin Medical School, Curtin Medical Research Institute, Curtin University, Bentley, Perth, Western Australia, 6102, Australia.
Drug delivery and translational research
|November 18, 2025
概括
新的纳米颗粒结合了probucol和石化酸 (LCA) 提供了针对性视网膜保护,防止氧化应激. 这些抗氧化纳米颗粒在临床前模型中显示出安全性和有效性,显示出治疗视力丧失疾病的潜力.
科学领域:
- 眼科医生 眼科 眼科
- 纳米技术纳米技术
- 药理学 药理学 是一个学科.
背景情况:
- 氧化应激是导致视力丧失的视网膜退行性疾病的主要因素.
- 为视网膜开发有效的抗氧化疗法仍然是一个重大挑战.
研究的目的:
- 创建和评估用于向视网膜保护的新型普鲁科尔-石合酸 (LCA) 纳米颗粒.
- 为了评估这些纳米颗粒的抗氧化和细胞保护作用在体外和他们的安全性在体内.
主要方法:
- 纳米粒子的配方使用喷雾干燥用probucol,酸,聚乙烯甘醇和LCA.
- 在氧化和高血糖应激下对人类视网膜色素上皮细胞 (ARPE-19) 的体外评估.
- 在体内通过野外类型和rd1小鼠的肠内注射进行体内安全性评估.
主要成果:
- 普罗布科尔-LCA纳米颗粒显著提高了ARPE-19细胞活力,并减少了氧化应激标志物 (ROS,GSH).
- 用纳米颗粒治疗的应激细胞中线粒体功能得到改善.
- 在小鼠体内注射没有对视网膜结构或功能产生不良影响.
结论:
- 普鲁科尔-LCA纳米粒子系统是一种安全有效的抗氧化剂平台,可用于静脉内输送.
- 这种系统有望在与氧化压力相关的视网膜疾病中的治疗应用.
相关概念视频
Open Angle Glaucoma: Treatment
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence
Changes in polymorphic forms can significantly influence the bioavailability of poorly soluble drugs. Although the FDA defines pharmaceutical equivalence based on having the same active ingredient, dosage form, and route of administration, it does not automatically disqualify products with different polymorphic forms. This means two products with different polymorphs can still be deemed pharmaceutically equivalent. However, polymorphic differences can affect properties like wettability,...


