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相关概念视频

Analysis of Population Pharmacokinetic Data01:12

Analysis of Population Pharmacokinetic Data

235
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...
235
Nonlinear Pharmacokinetics: Overview01:19

Nonlinear Pharmacokinetics: Overview

285
Nonlinear or dose-dependent pharmacokinetics is a phenomenon that occurs when the pharmacokinetic parameters of certain drugs deviate from linear pharmacokinetics at higher doses. These drugs do not follow the expected first-order kinetics, where the rate of drug elimination is directly proportional to the drug concentration. Instead, they exhibit a nonlinear relationship, which can be attributed to several factors.
Nonlinearity can arise due to the saturation of plasma protein-binding or...
285
Rational Dosage Regimen: Maintenance Dose and Loading Dose01:24

Rational Dosage Regimen: Maintenance Dose and Loading Dose

3.9K
A rational dosage regimen considers a drug's pharmacokinetics, including its absorption, distribution, metabolism, and elimination from the body. By understanding these factors, the appropriate dosage can be determined, and the dosing schedule can be designed to achieve and maintain the desired therapeutic effect while minimizing adverse effects.
In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady...
3.9K
Pharmacokinetic Models: Comparison and Selection Criterion01:26

Pharmacokinetic Models: Comparison and Selection Criterion

46
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.
46
Drug Dosage Regimen: Overview01:15

Drug Dosage Regimen: Overview

3.5K
A drug dosage regimen describes the specific instructions and schedule for administering a drug to a patient. It considers factors such as drug dosage, frequency, route of administration, and duration of treatment. Designing an appropriate dosage regimen for a patient aims to achieve a target drug concentration at the site of action.
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...
3.5K
Analysis Methods of Pharmacokinetic Data: Model and Model-Independent Approaches01:14

Analysis Methods of Pharmacokinetic Data: Model and Model-Independent Approaches

94
Drug disposition in the body is a complex process and can be studied using two major approaches: the model and the model-independent approaches.
The model approach uses mathematical models to describe changes in drug concentration over time. Pharmacokinetic models help characterize drug behavior in patients, predict drug concentration in the body fluids, calculate optimum dosage regimens, and evaluate the risk of toxicity. However, ensuring that the model fits the experimental data accurately...
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相关实验视频

Updated: Jun 8, 2025

Use of Rabbit Eyes in Pharmacokinetic Studies of Intraocular Drugs
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对剂量优化进行药量计和统计方面的考虑.

Palang Chotsiri1, Prasert Yodsawat1, Richard M Hoglund1,2

  • 1Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.

CPT: pharmacometrics & systems pharmacology
|November 6, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的药量计方法,用于在目标度未知时优化药物剂量,特别是在儿科患者群体中. 该方法确保了与典型患者群体相等的药理动力学和药理动力学结果,有助于制定有效的治疗策略.

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A Computerized Test Battery to Study Pharmacodynamic Effects on the Central Nervous System of Cholinergic Drugs in Early Phase Drug Development
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Stepwise Dosing Protocol for Increased Throughput in Label-Free Impedance-Based GPCR Assays
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Stepwise Dosing Protocol for Increased Throughput in Label-Free Impedance-Based GPCR Assays

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相关实验视频

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A Computerized Test Battery to Study Pharmacodynamic Effects on the Central Nervous System of Cholinergic Drugs in Early Phase Drug Development
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科学领域:

  • 药学指标 (Pharmacometrics) 是一个指标.
  • 药物开发 药物开发
  • 儿科药理学 儿科药理学

背景情况:

  • 目标实现的概率 (PTA) 对于药物剂量优化至关重要,但需要知道目标度.
  • 目标值通常无法用于特定的患者群体,特别是儿童.
  • 现有的方法对于未知的药理动力学 (PK) 和药理动力学-药理动力学 (PKPD) 目标缺乏灵活性.

研究的目的:

  • 探索用于确定最佳药物剂量的统计方法,当未知PK和PKPD目标时.
  • 开发一种可靠和可重复的药量测量方法,用于在不同人群中优化剂量.
  • 创建一个免费可访问的工具,用于临床环境中的实际应用.

主要方法:

  • 通过使用标准成年人剂量作为参考配置文件进行药理动力学和PKPD模拟.
  • 在目标人群中比较不同剂量方案的模拟结果.
  • 结果的实证累积分布函数之间的统计距离计算.
  • 选择最佳剂量,以匹配未知的目标的基准PK/PKPD配置文件.

主要成果:

  • 开发了一种新的药量测量方法,用于优化用已知和未知目标的剂量.
  • 已证明开发方法的稳定性和可重复性.
  • 在一个开源,免费可用的Shiny网络应用程序中实现了所有方法.

结论:

  • 新的药量测量方法有效地优化了在未知PK/PKPD目标的人群中药物剂量.
  • 可访问的Shiny网络应用程序促进了广泛采用和使用剂量优化.
  • 这种方法为量身定制药物疗法提供了有价值的工具,特别是对于儿科患者.