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相关概念视频

In Vitro Drug Dissolution: Compendial Testing Models I01:13

In Vitro Drug Dissolution: Compendial Testing Models I

369
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
369
In Vitro Drug Dissolution: Compendial Testing Models II01:09

In Vitro Drug Dissolution: Compendial Testing Models II

399
Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients,...
399
In Vitro Drug Dissolution: Alternative Methods01:17

In Vitro Drug Dissolution: Alternative Methods

290
Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...
290

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克服粘性模拟美联储国家媒体的挑战,使用计算机化数控平板电脑分解和溶解测试仪.

Valentin Stahl1, Muhammad Farooq Umer2, Jozef Al-Gousous2,3

  • 1Department of Biopharmaceutics and Pharmaceutical Technology, Johannes Gutenberg University Mainz, Staudingerweg 5, 55099, Mainz, Germany. valstahl@uni-mainz.de.

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|February 23, 2026
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概括

药物测试中的高粘度介质显著影响药片的分解和溶解. 一个新的计算机化数控装置克服了粘性条件的挑战,准确地反映了基于配方的平板电脑性能.

关键词:
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科学领域:

  • 制药科学 制药科学
  • 药物输送系统 药物输送系统
  • 生物制药生物制药公司

背景情况:

  • 在药物产品测试中的模拟食状态调查很少考虑高介质粘度.
  • 高粘度,模仿摄入的食物,可以显著改变药片的分解和药物释放.
  • 现有的综合分解和溶解装置并不是为高粘度介质设计的.

研究的目的:

  • 调查高介质粘度对药片分解和溶解的影响.
  • 开发和验证一种用于粘性介质中分解和溶解测试的新型装置.
  • 为了证明设备能够根据配方准确地描述平板电脑的性能.

主要方法:

  • 使用粘性基甲基纤维素 (HPMC) 溶液来模拟食后胃含量粘度和pH值.
  • 开发了一种基于计算机数控 (CNC) 的新型分解和溶解装置,通过介质移动样品.
  • 使用CNC仪器评估了含有不同可溶和不可溶填充剂的试验片.

主要成果:

  • 高介质粘度显著减缓了药片的分解和溶解性能.
  • 药片的成分和物理性质 (例如,多孔性,辅料) 极大地影响粘性介质中的性能.
  • 这种新的CNC装置成功地克服了与粘性介质相关的挑战,根据其成分准确区分平板电脑.

结论:

  • 高粘度介质显著影响药物释放,需要专门的测试方法.
  • 开发的CNC装置提供了一种可靠的方法,用于在粘性介质中进行分解和溶解测试.
  • 这种方法确保准确评估平板电脑的性能,与配方特性保持一致.