通过应用基于使用开源PBPK模型预测的血液度的修改因子,估计输静脉TTC (TTCiv)
Tae Hayashi1, Akira Kotaki1, Asako Fukushima1
1Chemicals Assessment and Research Center, Chemicals Evaluation and Research, Institute, Japan (CERI).
The Journal of toxicological sciences
|August 31, 2025
概括
这项研究确定了药物可提取物和可浸物 (E&Ls) 静脉内暴露的毒理关注门 (TTCiv). 建议TTCiv为27μg/天/人,有助于患者安全的风险管理.
科学领域:
- 制药科学
- 毒理学
- 风险评估
背景情况:
- 化学物质从包装中迁移到药品中,被称为可提取物和可浸物 (E&L),对患者构成风险.
- 静脉接触E&Ls是一个重大问题,但毒性数据和允许每日暴露 (PDE) 值很少.
- 确定静脉输入途径暴露 (TTCiv) 的毒理关注门对于管理E&L风险至关重要.
研究的目的:
- 建立一个TTCiv用于药品中E&L的风险管理.
- 获得287个E&L的口服PDEs,并估计静脉注射PDEs.
- 提出一种科学有效的TTCiv用于静脉内输出和输出.
主要方法:
- 从923个名单中获得287个口服PDEs.
- 使用PBPK建模 (ICE) 计算一个修饰因子 (α) 来估计基于AUC和Cmax的口服PDE的静脉PDE.
- 基于HTTK模型RMSE的修改系数为3,因为缺乏生物可用性数据而导致的不确定性.
主要成果:
- 对287种化学物质进行了静脉注射PDE的分布分析.
- 根据Cmax比率,建议TTCiv为27μg/天/人.
- 证明了用于建立TTC的路径推断方法.
结论:
- 建议的每天27μg/人TTCiv为管理与静脉输入和输出相关风险提供了基础.
- 路径推断方法可以应用于缺乏毒性数据的其他杂质.
- 这项研究有助于确定药物杂质的科学有效的TTC.
更多相关视频
相关概念视频
Physiological Pharmacokinetic Models: Incorporating Hepatic Transporter-Mediated Clearance
79
Drug transporters are critical in drug absorption, distribution, and excretion processes. They should be included in physiological-based pharmacokinetic (PBPK) models, which help predict human drug disposition. However, predicting this is challenging during drug development, especially when liver transport is involved. However, with a realistic representation of body transport processes, an accurate model may be possible.
A recent model describes pravastatin's hepatobiliary excretion,...
A recent model describes pravastatin's hepatobiliary excretion,...
79
One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution
494
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...
494
One-Compartment Open Model for IV Bolus Administration: General Considerations
315
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,...
315
Two-Compartment Open Model: IV Bolus Administration
696
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...
696
Physiological Pharmacokinetic Models: Assumption with Protein Binding
91
Physiological models with protein binding in pharmacokinetics offer a sophisticated approach to understanding drug disposition. These models consider drug-protein interactions, enabling them to effectively predict drug concentrations in different organs and tissues. This precision aids in accurate drug dosing, providing a significant advantage over conventional models. A key process within these models is equilibration, which ensures that drug concentrations achieve a steady state within the...
91
Two-Compartment Open Model: IV Infusion
331
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...
331


