Health & Environmental Research Online (HERO)


Print Feedback Export to File
8650261 
Journal Article 
In Vitro Drug Metabolism Using Liver Microsomes 
Knights, KM; Stresser, DM; Miners, JO; Crespi, CL 
2016 
0 
Current Protocols in Pharmacology
ISSN: 1934-8282
EISSN: 1934-8290 
74 
7.8.1-7.8.24 
English 
27636111 
Knowledge of the metabolic stability of newly discovered drug candidates eliminated by metabolism is essential for predicting the pharmacokinetic (PK) parameters that underpin dosing and dosage frequency. Further, characterization of the enzyme(s) responsible for metabolism (reaction phenotyping) allows prediction, at least at the qualitative level, of factors (including metabolic drug-drug interactions) likely to alter the clearance of both new chemical entities (NCEs) and established drugs. Microsomes are typically used as the enzyme source for the measurement of metabolic stability and for reaction phenotyping because they express the major drug-metabolizing enzymes cytochrome P450 (CYP) and UDP-glucuronosyltransferase (UGT), along with others that contribute to drug metabolism. Described in this unit are methods for microsome isolation, as well as for the determination of metabolic stability and metabolite formation (including kinetics). © 2016 by John Wiley & Sons, Inc.