PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12844133-8 2003 The area under the concentration-time curve ratio of S-nirvanol/S-mephenytoin, an index of CYP2B6 activity, increased 1.9-fold (P <.05) in CYP2C19 poor metabolizers during artemisinin multiple-dose administration, whereas the urinary excretion ratio of hydroxytolbutamide plus carboxytolbutamide/tolbutamide remained constant during the study period. ethylphenylhydantoin 53-63 cytochrome P450 family 2 subfamily C member 19 Homo sapiens 142-149 11854139-2 2002 In the present study, N-3-benzyl derivatives of nirvanol and phenobarbital were synthesized, their respective (+)- and (-)-enantiomers resolved chromatographically, and inhibitor potencies determined for these compounds toward CYP2C19 and other human liver cytochromes P450 (P450s). ethylphenylhydantoin 48-56 cytochrome P450 family 2 subfamily C member 19 Homo sapiens 227-234