首页> 外文学位 >A comparison of poly(L-lactic acid) and poly(D,L-lactide co-glycolide) biodegradable fibers as drug delivery devices.
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A comparison of poly(L-lactic acid) and poly(D,L-lactide co-glycolide) biodegradable fibers as drug delivery devices.

机译:聚(L-乳酸)和聚(D,L-丙交酯乙交酯)可生物降解纤维作为药物输送装置的比较。

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摘要

For this study, PLGA and PLLA fibers loaded with bovine serum albumin were fabricated as controlled drug delivery devices using a wet spinning technique. Fiber with 0%, 5%, and 10% v/v aqueous phase were developed, but each loaded fiber contained the same wt% BSA. The release kinetics of the PLGA fibers appears to be dependent on diffusion in initial stages and molecular weight degradation and mass loss in the later stages. The release kinetics of the PLLA fibers is predominantly dependent on diffusion in the initial stages. Cumulative effects of molecular weight degradation appear to lead to a second burst release from the core of the fiber. After the second burst release, the release kinetics appears to be diffusion dependent. BSA release proceeds in a characteristic fashion depending on fabrication conditions and polymer type. The fibers provide promising means for controlled local drug delivery.
机译:对于本研究,使用湿纺技术将负载牛血清白蛋白的PLGA和PLLA纤维制成为受控的药物输送装置。显影了具有0%,5%和10%v / v水相的纤维,但每种负载的纤维均包含相同的wt%BSA。 PLGA纤维的释放动力学似乎取决于初始阶段的扩散以及后期分子量的降低和质量损失。 PLLA纤维的释放动力学主要取决于初始阶段的扩散。分子量降低的累积效应似乎导致纤维芯的第二次爆发释放。在第二次爆发释放后,释放动力学似乎与扩散有关。取决于制造条件和聚合物类型,BSA释放以特征性方式进行。纤维为控制局部药物输送提供了有希望的手段。

著录项

  • 作者

    Borneman, Angela Fayann.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Biomedical.; Health Sciences Pharmacy.
  • 学位 M.S.
  • 年度 2002
  • 页码 p.573
  • 总页数 262
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;
  • 关键词

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