TY - JOUR
T1 - Pharmacometabolomics Informs About Pharmacokinetic Profile of Methylphenidate
AU - Kaddurah-Daouk, Rima
AU - Hankemeier, Thomas
AU - Scholl, Elizabeth H.
AU - Baillie, Rebecca
AU - Harms, Amy
AU - Stage, Claus
AU - Dalhoff, Kim P.
AU - Jűrgens, Gesche
AU - Taboureau, Olivier
AU - Nzabonimpa, Grace S.
AU - Motsinger-Reif, Alison A.
AU - Thomsen, Ragnar
AU - Linnet, Kristian
AU - Rasmussen, Henrik B.
AU - INDICES Consortium
AU - Pharmacometabolomics Research Network
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Carboxylesterase 1 (CES1) metabolizes methylphenidate and other drugs. CES1 gene variation only partially explains pharmacokinetic (PK) variability. Biomarkers predicting the PKs of drugs metabolized by CES1 are needed. We identified lipids in plasma from 44 healthy subjects that correlated with CES1 activity as determined by PK parameters of methylphenidate including a ceramide (q value = 0.001) and a phosphatidylcholine (q value = 0.005). Carriers of the CES1 143E allele had decreased methylphenidate metabolism and altered concentration of this phosphatidylcholine (q value = 0.040) and several high polyunsaturated fatty acid lipids (PUFAs). The half-maximal inhibitory concentration (IC50) values of chenodeoxycholate and taurocholate were 13.55 and 19.51 μM, respectively, consistent with a physiological significance. In silico analysis suggested that bile acid inhibition of CES1 involved both binding to the active and superficial sites of the enzyme. We initiated identification of metabolites predicting PKs of drugs metabolized by CES1 and suggest lipids to regulate or be regulated by this enzyme.
AB - Carboxylesterase 1 (CES1) metabolizes methylphenidate and other drugs. CES1 gene variation only partially explains pharmacokinetic (PK) variability. Biomarkers predicting the PKs of drugs metabolized by CES1 are needed. We identified lipids in plasma from 44 healthy subjects that correlated with CES1 activity as determined by PK parameters of methylphenidate including a ceramide (q value = 0.001) and a phosphatidylcholine (q value = 0.005). Carriers of the CES1 143E allele had decreased methylphenidate metabolism and altered concentration of this phosphatidylcholine (q value = 0.040) and several high polyunsaturated fatty acid lipids (PUFAs). The half-maximal inhibitory concentration (IC50) values of chenodeoxycholate and taurocholate were 13.55 and 19.51 μM, respectively, consistent with a physiological significance. In silico analysis suggested that bile acid inhibition of CES1 involved both binding to the active and superficial sites of the enzyme. We initiated identification of metabolites predicting PKs of drugs metabolized by CES1 and suggest lipids to regulate or be regulated by this enzyme.
UR - http://www.scopus.com/inward/record.url?scp=85052515415&partnerID=8YFLogxK
U2 - 10.1002/psp4.12309
DO - 10.1002/psp4.12309
M3 - Journal article
C2 - 30169917
AN - SCOPUS:85052515415
SN - 2163-8306
VL - 7
SP - 525
EP - 533
JO - CPT: Pharmacometrics and Systems Pharmacology
JF - CPT: Pharmacometrics and Systems Pharmacology
IS - 8
ER -