电荷对生物治疗运输,结合和吸收的影响:一项计算研究
Mario de Lucio1, Pavlos P Vlachos1, Hector Gomez1
1School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47907, USA.
International journal of pharmaceutics
|March 9, 2026
概括
在皮下注射中,电荷显著影响单克隆抗体 (mAbs) 运输和吸收. 我们的模型揭示了mAb特性和生理因素如何影响药物分配,以改善治疗效果.
科学领域:
- 药理动力学和药物输送方法
- 生物物理学的生物物理.
- 计算生物学 计算生物学
背景情况:
- 皮下注射是单克隆抗体 (mAbs) 输送的常见途径.
- 了解药物运输和吸收动态对于优化治疗疗效至关重要.
- 电荷在mAb皮下传输中的作用尚未完全理解.
研究的目的:
- 为了研究电荷对单克隆抗体 (mAbs) 在皮下注射中的运输和吸收动态的影响.
- 开发和验证用于预测皮下组织mAb行为的数学和计算模型.
- 分析各种生理和配方参数对药物分发的影响.
主要方法:
- 开发了一种基于Nernst-Planck方程和多孔介质流理论的新型数学和计算模型.
- 模拟了具有不同电性质的mAbs的短期运输动态和长期结合/吸收.
- 研究了缓冲器pH值,体重指数,注射深度和配方度的影响.
- 将数值模型输出与现有实验数据进行比较.
主要成果:
- 开发的模型准确地捕捉了mAb的运输和吸收动态.
- 电荷显著影响皮下组织中的mAb分布和停留时间.
- 像BMI和注射深度等生理因素,以及配方参数,调节药物分发模式.
结论:
- 电荷是控制单克隆抗体 (mab) 皮下药理学的关键因素.
- 开发的计算模型为预测药物行为和优化皮下注射策略提供了有价值的工具.
- 进一步的研究可以利用这个模型来设计改进的mAb配方和输送方法.
相关概念视频
01:22Factors Influencing Drug Absorption: Physicochemical Parameters
1.1K
The physicochemical characteristics of drugs play a crucial role in formulating stable and bioavailable drug products. The solubility of a drug, governed by the varying pH along the GI tract and its dissociation constant (pKa), is pivotal in determining its ionization state and absorption rate. Notably, weak acids and bases remain unionized and are absorbed more rapidly.
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...
Enhanced drug absorption can be achieved by reducing particle sizes and increasing surface areas, thereby facilitating...
1.1K
01:17Pore Transport and Ion-Pair Transport
1.5K
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
1.5K
01:22Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems
307
Bioavailability is a critical pharmacological concept that measures the extent and rate at which an active drug ingredient or therapeutic moiety enters the systemic circulation, remaining unchanged. It's a pivotal factor in determining a drug's efficacy and safety.The Biopharmaceutics Classification System (BCS) plays an essential role in drug development by categorizing drugs into four classes based on their solubility and permeability. This classification aids in understanding drug absorption...
307
01:23Drug Absorption Mechanism: Passive Membrane Transport
7.5K
Passive transport is a method of drug absorption where small, lipid-soluble drugs can move across the cell membrane. This movement happens along the concentration gradient, which is a natural flow from higher to lower concentration areas. The speed at which the drug moves is directly related to its lipid–water partition coefficient. This means that the more a drug dissolves in lipids, the faster it diffuses or spreads throughout the body. It is important to note that most drugs are either...
7.5K
01:20Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
640
Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
640
01:27Bioavailability Enhancement: Drug Permeability Enhancement
288
After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
288