首页> 外文会议>International IEEE/EMBS Conference on Neural Engineering >Characterization of the Size, Shape, and Drug Encapsulation Efficiency of PLGA Microcapsules Produced via Electro jetting for Drug Delivery to Brain Tumors
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Characterization of the Size, Shape, and Drug Encapsulation Efficiency of PLGA Microcapsules Produced via Electro jetting for Drug Delivery to Brain Tumors

机译:通过电射流产生的PLGA微胶囊的尺寸,形状和药物包封效率的表征,用于给药到脑肿瘤

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Despite significant progress in the development of new chemotherapeutic agents and drug delivery methods for brain tumors, malignant gliomas (high grade brain tumor) remains deadly with a median one-year survival time. A major unmet challenge in the treatment of malignant gliomas is the development of effective and targeted local delivery of chemotherapeutic agents at the cellular level. Here, we report the results of a systematic study of the size, shape, and drug release profiles of Poly(lactic-co glycolic) (PLGA) microcapsules produced and loaded with the anticancer agent 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU) using an electrojetting technique. We quantify the shape and size distribution of BCNU-loaded PLGA microcapsules as a function of the polymer concentration and flow rate used during electrojetting, and measure drug release profiles for microcapsules of three different morphologies: flattened microspheres, microspheres, and microfibers. The BCNU release profiles for three microcapsule morphologies are found to be in good agreement with model predictions for drug release as a result of drug diffusion and degradation of PLGA.
机译:尽管在脑肿瘤的新化学治疗剂和药物递送方法的开发方面取得了显着的进展,但恶性胶质瘤(高级脑肿瘤)仍然是致命的中位数一年的生存时间。治疗恶性胶质瘤治疗的主要挑战是在细胞水平下的有效和靶向局部递送化学治疗剂的发展。在这里,我们报告了系统研究的尺寸,形状和药物释放曲线的系统研究结果,所述聚(Lactic-Co Glycolic)(PLGA)微胶囊和用抗癌剂1,3-双(2-氯乙基)加载的微胶囊 - 1-硝基脲(BCNU)使用电气喷射技术。我们量化了BCNU加载的PLGA微胶囊的形状和尺寸分布,作为在电气喷射期间使用的聚合物浓度和流速的函数,并测量三种不同形态的微胶囊的药物释放曲线:扁平的微球,微球和微纤维。由于药物扩散和PLGA的降解,发现三种微胶囊形态的BCNU释放型材与药物释放的模型预测有关。

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