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相关概念视频

Modified-Release Drug Delivery Systems: Rate-Programmed II01:19

Modified-Release Drug Delivery Systems: Rate-Programmed II

Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...
Modified-Release Drug Delivery Systems: Rate-Programmed I01:22

Modified-Release Drug Delivery Systems: Rate-Programmed I

Rate-programmed drug delivery systems (DDS) are designed to release drugs at specific, controlled rates to maintain consistent therapeutic levels. These systems are categorized based on their release mechanisms, including dissolution-controlled DDS, diffusion-controlled DDS, and combined dissolution-diffusion-controlled DDS.In dissolution-controlled DDS, the release rate depends on the slow dissolution of the drug itself or the surrounding matrix. Drugs with inherently slow dissolution rates,...
Modified-Release Drug Delivery Systems: Stimuli-Activated01:30

Modified-Release Drug Delivery Systems: Stimuli-Activated

Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...

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一种遥控的多功能尼丁醇-PMMA智能生物复合材料:微细胞泡,形状变形和受控的药物释放.

Donghwan Lim1, Jaehoo Kim2, Tae Young Kim3

  • 1School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea.

ACS applied materials & interfaces
|December 9, 2025
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概括

研究人员开发了一种使用尼醇和PMMA用于先进医疗器械的智能生物复合材料. 这种材料提供了形状变形,可控药物释放和增强的强度,为最小侵入性疗法铺平了道路.

关键词:
药物释放药物释放药物释放药物释放药物电磁感应是一种电磁感应.微细胞泡过程的过程.形状变形,形状变形,形状变形.智能生物复合材料的使用

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科学领域:

  • 生物材料科学 生物材料科学
  • 材料工程 材料工程 材料工程
  • 医疗器械技术 医疗器械技术

背景情况:

  • 开发用于体内应用的智能生物材料对于治疗医学至关重要.
  • 现有的材料往往缺乏多功能性和远程控制功能.
  • 需要先进的复合材料来整合微创医疗器械的复杂功能.

研究的目的:

  • 使用尼丁醇和PMMA制造一个遥控的多功能智能生物复合材料.
  • 为了研究复合材料的形状变形,微细胞泡和受控药物释放的能力.
  • 评估尼丁醇-PMMA复合物的应用潜力,例如血管紧.

主要方法:

  • 尼丁醇-PMMA复合物的制造.
  • 无接触电磁场的应用以诱导形状变形和微细胞泡.
  • 在体外测试血管紧潜力和与NIH 3T3纤维细胞的细胞相容性.
  • 使用Korsmeyer-Peppas模型进行药物释放动力分析.

主要成果:

  • 尼丁醇-PMMA复合物展示了同时的形状变形和微细胞泡.
  • 由于微细胞泡,撞击强度提高了143%.
  • 实现了对甲 (NaBz) 的受控释放,由一个近乎Fickian机制控制.
  • 复合物显示出出色的细胞兼容性和血管紧的潜力.

结论:

  • 制造的尼丁醇-PMMA生物复合物成功地整合了形状变形,微细胞泡和受控的药物输送.
  • 这种遥控系统为开发先进的,最少侵入性的医疗器械提供了有前途的方法.
  • 该材料的特性表明,它具有针对客户定制的疗法和改进的医疗干预的巨大潜力.