一种基于遗传算法的方法,用于预测涉及CYP2C8或CYP2B6的代谢药物相互作用
Veronica Di Paolo1, Francesco Maria Ferrari2, Davide Veronese1
1Laboratory of Drug Metabolism, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy.
Journal of pharmacological and toxicological methods
|May 22, 2024
概括
一个新的遗传算法可以从CYP2B6和CYP2C8酶活性预测药物相互作用 (DDI). 这种工具有助于确定使用CYP2B6或CYP2C8基质与相互作用药物的安全药物剂量.
科学领域:
- 药理学 药理学是指药理学的学科.
- 计算化学计算化学
- 药物新陈代谢 药物新陈代谢
背景情况:
- 涉及细胞染色体P450酶的药物相互作用 (DDI) 显著影响药物的有效性和安全性.
- 细胞染色体P450 2B6 (CYP2B6) 和细胞染色体P450 2C8 (CYP2C8) 是参与许多药物的代谢的关键酶.
- 预测DDI对于优化药物治疗和预防不良事件至关重要.
研究的目的:
- 开发和验证一种基于遗传算法 (GA) 的方法来预测DDI.
- 量化CYP2B6和CYP2C8抑制和诱导对药物药理动学的影响.
- 为评估适当的药物剂量提供一个工具,当与事者同时使用基质时.
主要方法:
- 使用遗传算法 (GA) 来估计关键的药理动力学参数,包括贡献比率 (CR) 和抑制/诱导功率 (IR,IC).
- 该模型结合了98项健康志愿者体内研究的数据,使用血药物度-时间曲线 (AUC) 下的面积比率来定义DDI.
- 使用外部数据集进行模型验证,然后使用贝叶斯直角回归进行参数精细化.
主要成果:
- 开发的GA方法成功预测了各种CYP2B6基质,抑制剂和诱导剂以及CYP2C8基质和抑制剂的AUC比率.
- 预测在观察值的50-200%范围内实现,证明了模型的准确性.
- 该方法有效地捕捉了在DDI预测中酶动力学的复杂相互作用.
结论:
- 拟议的GA方法为预测由CYP2B6和CYP2C8.8介导的DDI提供了一个有价值的计算工具.
- 这种方法可以帮助评估通过这些酶代谢的药物的合适剂量,当与相互作用药物联合使用时.
- 该研究强调了GA在推进药理动力学建模和DDI评估方面的潜力.
相关概念视频
Physiological Pharmacokinetic Models: Incorporating Hepatic Transporter-Mediated Clearance
38
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,...
38
Pharmacokinetic Models: Comparison and Selection Criterion
69
Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
69
Factors Affecting Drug Biotransformation: Biological
142
Biological factors significantly impact drug metabolism, influencing drug clearance, efficacy, and potential toxicity.
Species differences: Variations in enzyme systems across species can cause disparities in drug metabolism. For instance, humans may metabolize certain drugs faster than rodents, altering therapeutic effects.
Strain differences: Genetic variations within a species can result in differing enzyme activity, impacting drug response and toxicity. For example, some mouse strains may...
Species differences: Variations in enzyme systems across species can cause disparities in drug metabolism. For instance, humans may metabolize certain drugs faster than rodents, altering therapeutic effects.
Strain differences: Genetic variations within a species can result in differing enzyme activity, impacting drug response and toxicity. For example, some mouse strains may...
142
Analysis of Population Pharmacokinetic Data
252
Analysis of population pharmacokinetic data involves studying the behavior of drugs within diverse populations to understand their pharmacokinetic parameters. Traditional pharmacokinetic methods typically involve collecting samples from a few individuals and estimating these parameters. While these methods are commonly used, they have limitations in capturing the variability in drug response among individuals or heterogeneous populations. Population pharmacokinetics is employed to address these...
252
Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs
237
A drug's physicochemical properties fundamentally influence its metabolism. For instance, a drug's molecular size and shape critically determine its interaction with enzymes and transporters — larger drugs may face difficulty reaching enzyme active sites, altering their metabolic pathways. The pKa of a drug, which establishes its ionization state, can impact its solubility and absorption, thereby influencing metabolism.
The drug's acidity or basicity is essential in...
The drug's acidity or basicity is essential in...
237
Nonlinear Pharmacokinetics: Role of Transporters
47
A drug's nonlinear kinetics can be influenced by a diverse range of transporter proteins that serve as crucial players in drug distribution. These transporters, found within cells, can enhance or reduce local drug concentrations by facilitating the influx or efflux of drugs. For instance, the expression of xenobiotic transporters can be influenced by factors such as age and gender, potentially impacting the linearity of drug response.
Polymorphisms occurring in drug transporters can alter...
Polymorphisms occurring in drug transporters can alter...
47


