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相关概念视频

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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Updated: May 4, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
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装有微球的多层微针.

Andrew R Tadros1, Xin Dong Guo1, Mark R Prausnitz2

  • 1School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia, 30332-0100, U.S.A.

AAPS PharmSciTech
|January 3, 2025
PubMed
概括
此摘要是机器生成的。

装有可生物降解微球的微针 (MN) 贴片通过皮肤屏障提供受控,持续的药物输送. 这项创新技术使得45天以上的向治疗可以持续进行.

关键词:
在 PLGA 微球上.有控制释放的释放.皮肤学 皮肤学微针贴片微针贴片聚乳-同-甘氨酸酸的聚乳-同-甘氨酸皮肤 皮肤 皮肤通过皮肤传递药物.

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科学领域:

  • 生物材料科学 生物材料科学
  • 皮肤药物输送 皮肤药物输送
  • 纳米技术 纳米技术

背景情况:

  • 角质层对有效的透皮疗法提供构成重大障碍.
  • 微针 (MN) 贴片为非侵入性皮肤药物输送提供了一个有希望的途径.
  • 可生物降解的聚合物配方可以使MNs的药物释放得到控制.

研究的目的:

  • 用MN贴片来增强使用MN贴片的治疗交付的时空控制.
  • 开发多层的MN贴片,包含可生物降解的微球,用于持续释放.
  • 调查微球载MNs的可行性,以通过皮肤给予药物.

主要方法:

  • 聚乳-同-甘油酸 (PLGA) 微球被制造成封装一个模型染料.
  • 用层次制造来创建装有PLGA微球的多层MN补丁.
  • 评估了MNs的机械性能,并进行了ex vivo/in vivo皮肤插入研究.

主要成果:

  • 在MN补丁中,PLGA微球的含量高达5μg/MN.
  • 越来越多的微球层降低了MNs的机械强度.
  • 用微球装载的MN贴片在15分钟内溶解在猪和小鼠皮肤中,在45天内开始控制释放.

结论:

  • 多层,带有微球的MN贴片是可行的,用于有针对性和持续的透皮治疗.
  • 这项技术解决了医学应用中角层屏障的局限性.
  • 开发的MN贴片显示了先进的疫苗接种和皮肤病治疗的潜力.