贝叶斯推理由参数子集选择为最小的PBPK大脑模型提供信息
Kamala Dadashova1, Ralph C Smith1, Mansoor A Haider1
1Department of Mathematics, North Carolina State University, Raleigh, NC 27695, USA.
概括
基于生理学的药理动力学 (PBPK) 模型需要对参数不确定性的量化. 这项研究将参数识别性分析与贝叶斯推理相结合,以改进模型,量化不确定性并改进预测.
科学领域:
- 药理动力学和系统生物学
- 计算生物学 计算生物学
- 数学建模的数学建模
背景情况:
- 基于生理学上的药理动力学 (PBPK) 模型使用普通微分方程模拟药物吸收,分布,新陈代谢和分泌 (ADME).
- 这些复杂的模型需要准确的参数量化和不确定性分析,以获得可靠的临床应用.
- 参数识别,确定哪些参数是数据独特定义的,对于强大的PBPK建模至关重要.
研究的目的:
- 在PBPK模型中开发和验证一个将参数子集选择与贝叶斯推理集成的策略.
- 通过精细的参数估计和不确定性量化,提高PBPK模型预测的准确性.
- 为了降低与复杂的PBPK模型分析相关的计算成本.
主要方法:
- 实施一种将参数识别分析与贝叶斯推理相结合的策略.
- 使用频率主义或贝叶斯推理方法来量化不确定性.
- 应用参数子集选择来完善PBPK模型中的可识别参数集.
主要成果:
- 成功整合了参数识别分析和PBPK模型的贝叶斯推理.
- 证明了可识别的参数子集的精细化,从而改善了模型预测.
- 量化参数和响应不确定性,提高模型可靠性.
- 减少对PBPK模型分析的计算需求.
结论:
- 拟议的战略通过专注于可识别的参数,有效地改进了PBPK模型.
- 将可识别性分析与贝叶斯推理相结合,可以提高预测准确度并量化不确定性.
- 这种方法为稳健的PBPK模型开发和在医疗保健中的应用提供了计算效率高的方法.
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