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Rational design of liposomes for sustained release drug delivery of bevacizumab to treat ocular angiogenesis

机译:脂肪酸持续释放药物递送的脂质体的理性设计,以治疗眼血管生成

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Diabetic Retinopathy (DR) and Age-related Macular Degeneration (AMD) are the most common ocular diseases and a leading cause of blindness in American adults. Laser treatments and drug intervention with Ranibizumab, Aflibercept and Bevacizumab are available for controlling angiogenesis by inhibiting the growth of new blood vessels. These antibody injections are given monthly into the eye which are inconvenient as well as very expensive. Our research focuses on encapsulating the protein drugs within the liposomes to obtain drug release over a longer period, thereby decreasing the frequency and cost of the injections. We used calorimetric, spectroscopic and light scattering methods to identify the variations in the liposomes in terms of particle size, encapsulation efficiency, time of release and thermal stabilities to screen and downsize our ideal formulations to three with the DPPC: DOPE: DPPG: cholesterol compositions of 60:10:0:30, 65:5:5:25 and 60:5:5:30. Overall, his paper focuses on developing Bevacizumab loaded liposomes for extended released drug delivery to treat ocular angiogenesis. In vitro biological activity and RPE cell cytotoxicity were also tested to determine the efficacy of the drug delivery system for potential human use.
机译:糖尿病视网膜病变(DR)和年龄相关的黄斑变性(AMD)是最常见的眼部疾病和美国成年人失明的主要原因。使用Ranibizumab,AfliBelcept和Bevacizumab的激光治疗和药物干预可用于通过抑制新血管的生长来控制血管生成。这些抗体注射每月给予眼睛,这是不方便的,也是非常昂贵的。我们的研究侧重于将脂质体内的蛋白质药物封装在较长时期内以获得药物释放,从而降低注射的频率和成本。我们使用量热,光谱和光散射方法在粒度,包封效率,释放时间和热稳定性方面鉴定脂质体的变化,并将我们的理想制剂与DPPC:DPPG:DPPG:胆固醇组合物缩小60:10:0:30,65:5:5:25和60:5:5:30。总的来说,他的论文侧重于开发膨胀型脂质体,用于延长释放的药物递送以治疗眼血管生成。还测试了体外生物活性和RPE细胞毒性,以确定药物递送系统潜在使用的疗效。

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