期刊
AAPS JOURNAL
卷 11, 期 2, 页码 225-237出版社
SPRINGER
DOI: 10.1208/s12248-009-9099-y
关键词
ADAM; ADME; inter-individual variability; in vitro-in vivo extrapolation (IVIVE); oral absorption; physiologically-based pharmacokinetic (PBPK) models
资金
- Simcyp Consortium
The bioavailability of drugs from oral formulations is influenced by many physiological factors including gastrointestinal fluid composition, pH and dynamics, transit and motility, and metabolism and transport, each of which may vary with age, gender, race, food, and disease. Therefore, oral bioavailability, particularly of poorly soluble and/or poorly permeable compounds and those that are extensively metabolized, often exhibits a high degree of inter- and intra-individual variability. While several models and algorithms have been developed to predict bioavailability in an average person, efforts to accommodate intrinsic variability in the component processes are less common. An approach that incorporates such variability for human populations within a mechanistic framework is described together with examples of its application to drug and formulation development.
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