title: Population-based mechanistic prediction of oral drug absorption.
abstract: 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.
authors.affiliation: Modelling and Simulation Group, Simcyp Limited, Blades Enterprise Centre, John Street, Sheffield, S2 4SU, UK. M.Jamei@simcyp.com
authors.forename: Masoud
authors.initials: M
authors.lastname: Jamei
authors.forename: David
authors.initials: D
authors.lastname: Turner
authors.forename: Jiansong
authors.initials: J
authors.lastname: Yang
authors.forename: Sibylle
authors.initials: S
authors.lastname: Neuhoff
authors.forename: Sebastian
authors.initials: S
authors.lastname: Polak
authors.forename: Amin
authors.initials: A
authors.lastname: Rostami-Hodjegan
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Tucker
mesh_terms: D000818:Animals; D001682:Biological Availability; D001711:Biotransformation; D002626:Chemistry, Pharmaceutical; D005544:Forecasting; D006801:Humans; D007408:Intestinal Absorption; D004364:Pharmaceutical Preparations / Q000378:metabolism*; D010599:Pharmacokinetics; D011153:Population; D012995:Solubility
chemical_list: D004364:Pharmaceutical Preparations