使用IVPT和体内开放流微输的先进局部阿西克洛维尔配方的详细药理动力学特征
Gerd Schwagerle1, Matthew J Sharp2, Alan Parr3
1Health - Institute for Biomedical Research and Technologies, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstrasse 2, 8010 Graz, Austria.
International journal of pharmaceutics
|July 26, 2023
概括
一种新的局部阿西克洛维尔配方显著改善了治疗单纯疹病毒 (HSV) 的皮肤药物输送. 这种优化的配方为口服药物提供了有希望的替代品,副作用可能更少.
科学领域:
- 皮肤病学 皮肤病学
- 药理动力学 药理动力学
- 病毒学 病毒学
背景情况:
- 对简单疹病毒 (HSV) 的局部治疗有效性有限,目前的阿西克洛维尔产品只能带来边际益处.
- 增强的阿西克洛维尔溶解性和透皮肤对于提高局部治疗疗效至关重要.
- 新配方需要经过验证的进入表皮/皮肤并持续释放.
研究的目的:
- 为了比较不同阿西克洛维尔配方的体外透试验 (IVPT) 和体内皮肤开放流微 perfusion (dOFM).
- 与参考产品相比,评估新型阿西克洛维尔配方的皮肤透和药物动力学行为.
主要方法:
- 实验室透测试 (IVPT) 用于选四种有前途的阿西克洛维尔配方.
- 在体内进行了临床前皮肤开放流微 perfusion (dOFM) 实验,以评估皮肤透.
- 从dOFM获得的药理动力学数据与参考产品Zovirax® 5%奶油进行了比较.
主要成果:
- 在四种测试的阿西克洛维尔配方中,其中一种表现明显优于其他三种和dOFM中的参考产品.
- 在体内,dOFM显示了皮肤上阿西克洛维尔度的差异,IVPT无法检测到.
- 优化的配方实现了与口服阿西克洛维尔相比的治疗性皮肤度,尽管药物负载较低.
结论:
- 新的局部阿西克洛维尔配方增强了药物到皮肤的输送,超过了参考产品的性能.
- dOFM是识别优质局部药物输送配方的宝贵工具.
- 这种优化的配方为更有效的局部HSV治疗提供了潜在的潜力,并减少了全身副作用.
相关概念视频
01:19One-Compartment Open Model for IV Bolus Administration: General Considerations
249
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,...
249
01:16Methods for Studying Drug Absorption: In vitro
261
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...
261
01:18Two-Compartment Open Model: IV Bolus Administration
576
The two-compartment model for intravenous (IV) bolus administration illustrates drug distribution in the body, subdividing it into central and peripheral compartments. This model operates on the concept of two-compartment kinetics. The drug's plasma concentration shows a bi-exponential decline following IV bolus administration, signaling the presence of two disposition processes: distribution and elimination.
The disparity between drug input and the sum of drug transfer rates between...
The disparity between drug input and the sum of drug transfer rates between...
576
00:56One-Compartment Open Model for IV Bolus Administration: Estimation of Clearance
104
Clearance is a key pharmacokinetic parameter that quantifies the volume of body fluid from which a drug is entirely removed within a specific time frame. It is crucial in assessing how a drug is eliminated from the body and has critical clinical applications.
In the one-compartment open model for intravenous (IV) bolus administration, clearance is estimated by dividing the elimination rate by the plasma drug concentration. This equation leverages the elimination rate constant and the apparent...
In the one-compartment open model for intravenous (IV) bolus administration, clearance is estimated by dividing the elimination rate by the plasma drug concentration. This equation leverages the elimination rate constant and the apparent...
104
01:09One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution
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The one-compartment open model is a simplified approach used in pharmacokinetics to understand the distribution and elimination of a drug administered through an intravenous bolus. This model assumes rapid drug dispersal throughout the body and elimination using a first-order process. Key pharmacokinetic parameters, such as the elimination rate constant (k), half-life (t1/2), and the apparent volume of distribution (Vd), can be estimated from this model. The elimination rate is calculated...
336
01:15Two-Compartment Open Model: IV Infusion
274
A two-compartment model is a vital tool in pharmacokinetics, providing an essential understanding of drug behavior, especially for those administered via zero-order intravenous infusion. This model outlines two compartments: the central compartment, where elimination occurs, and the peripheral compartment.
The model illustrates the decrease in plasma drug concentration from the central compartment with a specific equation. It shows that under steady-state conditions, the drug's input rate...
The model illustrates the decrease in plasma drug concentration from the central compartment with a specific equation. It shows that under steady-state conditions, the drug's input rate...
274