使用ex vivo皮肤透分析模型来预测眼部药物透:用黄素配方进行可行性研究
Christian Raab1, Stefan Brugger2, Jara-Sophie Lechner1
1Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany.
Pharmaceutics
|October 26, 2024
概括
数字图像处理有效地研究药物通过皮肤和角膜透. 赛克洛德克斯的配方显示,水性药物库尔库明的角膜透率是最好的.
科学领域:
- 眼科医生 眼科 眼科
- 药品制造 药品制造 药品制造
- 生物医学工程 生物医学工程
背景情况:
- 评估药物通过角膜等生物屏障的透率对于开发有效治疗至关重要.
- 疏水性药物在制剂方面存在挑战,以实现充分的生物可用性.
- 数字图像处理为药物透的半定量分析提供了一个潜在的方法.
研究的目的:
- 评估使用数字图像处理技术研究角膜药物透的可行性.
- 研究各种配方策略,以提高黄素的皮肤和角膜生物可用性,黄素是一种模范性疏水药物.
- 将以前开发的 ex vivo 皮肤透的数字图像分析方法与 ex vivo 角膜透模型相适应.
主要方法:
- 探索配方策略,包括油性溶液,悬浮剂,纳米悬浮剂,菌体,脂质体和环极.
- 测试皮肤透效果,使用已建立的ex vivo猪耳朵模型与数字图像处理.
- 应用数字图像分析方法来研究 ex vivo 猪整眼模型中的角膜透.
主要成果:
- 对于皮肤透,油性溶液,悬浮剂和纳米悬浮剂的透率最低.
- 脂质体和环氧素显示皮肤透率提高.
- 黄素的角质透与皮肤透相关,其中环氧素配方实现了最深的透.
结论:
- 数字图像分析方法,最初是为ex vivo皮肤透而开发的,可以很容易地适应用于研究角膜透.
- 配方策略显著影响疏水性药物的角膜透.
- 环极素代表了一种有前途的配方方法,用于增强角膜药物输送.
相关概念视频
01:16Methods for Studying Drug Absorption: In vitro
209
In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
209
01:12Two-Compartment Open Model: Extravascular Administration
158
The two-compartment model for extravascular administration represents a drug's absorption and distribution process. It features a central compartment, where the drug is first absorbed, and a peripheral compartment, which illustrates the drug's distribution throughout the body. The rate of change in drug concentration in the central compartment is calculated by three exponents: absorption, distribution, and elimination.
The absorption exponent (ka) indicates the speed at which the drug...
The absorption exponent (ka) indicates the speed at which the drug...
158
01:12One-Compartment Open Model for Extravascular Administration: Zero-Order Absorption Model
65
Extravascular administration, such as oral or intramuscular routes, is a non-invasive drug delivery method, often preferred for ease and patient compliance. A key factor here is absorption, which dictates how quickly and effectively the drug enters the bloodstream from the administration site. Absorption follows either zero-order or first-order kinetics.
Zero-order absorption maintains a steady rate irrespective of the amount of drug left to be absorbed, making it a constant process. In the...
Zero-order absorption maintains a steady rate irrespective of the amount of drug left to be absorbed, making it a constant process. In the...
65
01:06Three-Compartment Open Model
154
The three-compartment open model is a pharmacokinetic model used to describe the distribution and elimination of drugs following extravascular administration. It comprises a central compartment representing the plasma and two peripheral compartments. The highly perfused peripheral compartment represents organs and tissues with a rich blood supply, such as the liver, kidneys, and lungs. The scarcely perfused peripheral compartment represents tissues with lower blood supply, such as adipose...
154
01:19One-Compartment Open Model for IV Bolus Administration: General Considerations
165
The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant,...
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant,...
165
01:15One-Compartment Open Model for Extravascular Administration: First-Order Absorption Model
197
The first-order absorption model for extravascular administration describes the rate at which a drug is absorbed and eliminated, following the principles of first-order kinetics. This model is vital as it provides a mathematical representation of drug behavior within the body. It also allows for the prediction and interpretation of drug absorption and elimination based on the rate of change in drug concentration over time. This model can be visualized as a plasma concentration-time profile...
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