PBPK建模解决了口服吸收介导的药物相互作用
Xinyuan Zhang1, Grace Fraczkiewicz1, Viera Lukacova1
1Simulations Plus, Inc., P.O. Box 12317, Research Triangle Park, NC, 27709, USA.
Drug metabolism and pharmacokinetics
|February 8, 2026
概括
基于生理学的药理动力学 (PBPK) 建模有助于预测药物吸收如何受到相互作用的影响,例如胃pH或食物的变化. 这种方法有助于在开发过程中评估药物的安全性和有效性.
科学领域:
- 药理动力学和药物新陈代谢
- 药物相互作用和安全性
- 在药理学中的计算建模.
背景情况:
- 药物吸收是药理动力学 (PK) 和ADME (吸收,分布,新陈代谢和分泌) 的关键因素.
- 吸收过程中的药物相互作用 (DDI) 可以显著改变药物PK,影响安全性和疗效.
- 基于生理学的药理动力学 (PBPK) 建模是评估这些吸收介导的DDI的一个有价值的工具.
研究的目的:
- 审查口服吸收介导的DDI的关键机制,重点关注胃肠道因素.
- 为了说明PBPK建模在预测和评估吸收介导DDI中的应用.
- 讨论DDI评估中的PBPK建模的监管接受和未来方向.
主要方法:
- 关于口服吸收机制及其对药物相互作用的影响的文献综述.
- 应用PBPK建模来模拟和预测与胃pH,胃排空,胃肠道过境和食物影响相关的DDI.
- 分析案例研究和来自FDA和EMA等机构的监管指导.
主要成果:
- PBPK模型有效地预测了由胃pH,胃过境和食物效应变化引起的DDI.
- 案例展示了PBPK在评估吸收介导的DDI风险中的有用性.
- 监管机构越来越多地接受基于PBPK的DDI评估.
结论:
- PBPK建模提供了一种机械方法来评估吸收介导的DDI风险,支持药物开发.
- 专注于胃肠道因素为药物吸收变化提供了有价值的见解.
- 未来与机器学习和全球监管协调的整合将进一步增强PBPK应用.
相关概念视频
Non-Oral Extravascular Drug Absorption Routes
539
Non-oral extravascular routes, which encompass sublingual, buccal, topical, intramuscular, and inhalation methods, primarily utilize passive diffusion to transport drugs into the systemic circulation. The absorption rates and effectiveness of these routes depend on the drug's physicochemical properties, as well as the patient's anatomical and pathophysiological state.
Lipophilic drugs that are stable at salivary pH (6) and exhibit minimal binding to the oral mucosa are absorbed more...
Lipophilic drugs that are stable at salivary pH (6) and exhibit minimal binding to the oral mucosa are absorbed more...
539
Drug Absorption Mechanism: Carrier-Mediated Membrane Transport
6.2K
Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
6.2K
Drug Absorption: Factors Affecting GI Absorption
6.3K
The process of oral drug absorption can be influenced by several factors. Weakly acidic drugs tend to be absorbed more readily from the stomach due to their nonionized state. However, absorption may be less efficient in the upper intestine, where drugs are often ionized. Interestingly, despite the stomach's apparent advantage for drug absorption, its mucous layer can hinder diffusion. Its surface area is also smaller than the intestine's, which can further slow down the absorption rate.
6.3K
Drug Absorption: Overview
1.9K
The process of drug absorption signifies the transition of a drug from its site of administration into the plasma. This process is influenced by various factors, including the route of administration, the anatomy of the absorption site, the mechanism of absorption, gut motility, and the drug's physicochemical properties.
When drugs are injected intravenously, they directly enter the systemic circulation. Alternatively, orally administered drugs navigate through the gastrointestinal (GI)...
When drugs are injected intravenously, they directly enter the systemic circulation. Alternatively, orally administered drugs navigate through the gastrointestinal (GI)...
1.9K
Factors Influencing Drug Absorption: Drug Dissolution
1.2K
The pharmacokinetic journey of drugs from solid oral dosage forms into systemic circulation is multifaceted. It begins with disintegration, a prerequisite ensuring a solid dosage form's subdivision into minute particles. Dissolution occurs next as these granulated entities solubilize in gastrointestinal fluids. This solubilization is crucial for the succeeding stage, permeation, which describes the traversal of the drug across the intestinal membrane and its subsequent entry into the blood...
1.2K
Pharmacokinetics: Drug–Drug Interactions
455
Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
455


