Human Variability in Carboxylesterases and carboxylesterase-related Uncertainty Factors for Chemical Risk Assessment

نویسندگان

چکیده

Carboxylesterases (CES) are an important class of enzymes involved in the hydrolysis a range chemicals and show large inter-individual variability vitro. An extensive literature search was performed to identify vivo probe substrates for CES1 CES2 together with their protein content enzymatic activity. Human pharmacokinetic (PK) data on Cmax, clearance, AUC were extracted from 89 publications Bayesian meta-analysis using hierarchical model derive CES-related distributions related uncertainty factors (UF). The indicated that 97.5% healthy adults covered by kinetic default UF (3.16), except clopidogrel dabigatran etexilate. Clopidogrel is metabolised small amount polymorphic CYP2C19, which can have impact overall pharmacokinetics, while seen etexilate might be due differences absorption, since this influenced food intake. moderate high (<CV 50%), possible polymorphism enzyme but also sample size available per chemical. presented used combination vitro pathway-specific distributions.

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ژورنال

عنوان ژورنال: Toxicology Letters

سال: 2021

ISSN: ['0378-4274', '1879-3169']

DOI: https://doi.org/10.1016/j.toxlet.2021.07.005