Individual differences in in vitro and in vivo metabolic clearances of antipsychotic risperidone from Japanese subjects genotyped for cytochrome P450 2D6 and 3A5

Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9‐hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individu...

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Published inHuman psychopharmacology Vol. 31; no. 2; pp. 93 - 102
Main Authors Okubo, Maho, Morita, Shoko, Murayama, Norie, Akimoto, Youichi, Goto, Akiko, Yamazaki, Hiroshi
Format Journal Article
LanguageEnglish
Published England Blackwell Publishing Ltd 01.03.2016
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Abstract Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9‐hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo. Methods In vitro liver microsomal risperidone 9‐hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52 years, range: 24–75 years) genotyped for CYP2D6 and CYP3A5. Results CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9‐hydroxylation activities than extensive metabolizers did at 5 μM of risperidone; this difference was not evident at 50 μM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9‐hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9‐hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes. Conclusions Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5. Copyright © 2016 John Wiley & Sons, Ltd.
AbstractList There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo.OBJECTIVEThere are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo.In vitro liver microsomal risperidone 9-hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52 years, range: 24-75 years) genotyped for CYP2D6 and CYP3A5.METHODSIn vitro liver microsomal risperidone 9-hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52 years, range: 24-75 years) genotyped for CYP2D6 and CYP3A5.CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9-hydroxylation activities than extensive metabolizers did at 5 μM of risperidone; this difference was not evident at 50 μM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9-hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9-hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes.RESULTSCYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9-hydroxylation activities than extensive metabolizers did at 5 μM of risperidone; this difference was not evident at 50 μM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9-hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9-hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes.Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5.CONCLUSIONSIndividual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5.
Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo. Methods In vitro liver microsomal risperidone 9-hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52years, range: 24-75years) genotyped for CYP2D6 and CYP3A5. Results CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9-hydroxylation activities than extensive metabolizers did at 5µM of risperidone; this difference was not evident at 50µM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9-hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9-hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes. Conclusions Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5. Copyright © 2016 John Wiley & Sons, Ltd.
There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo. In vitro liver microsomal risperidone 9-hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52 years, range: 24-75 years) genotyped for CYP2D6 and CYP3A5. CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9-hydroxylation activities than extensive metabolizers did at 5 μM of risperidone; this difference was not evident at 50 μM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9-hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9-hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes. Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5.
Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9-hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo. Methods In vitro liver microsomal risperidone 9-hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52years, range: 24-75years) genotyped for CYP2D6 and CYP3A5. Results CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9-hydroxylation activities than extensive metabolizers did at 5 mu M of risperidone; this difference was not evident at 50 mu M of risperidone. The recombinant CYP3A5 V sub(max)/K sub(m) value for risperidone 9-hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9-hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes. Conclusions Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5.
Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its pharmacologically active metabolite, 9‐hydroxyrisperidone (paliperidone), in clinical patients. The aim of this study was to investigate individual differences in the metabolic clearance of risperidone in vitro and in vivo. Methods In vitro liver microsomal risperidone 9‐hydroxylation activities and in vivo plasma concentrations of risperidone and paliperidone were investigated in 15 male and 12 female Japanese subjects (mean age 52 years, range: 24–75 years) genotyped for CYP2D6 and CYP3A5. Results CYP2D6 intermediate and poor metabolizers showed significantly lower liver microsomal risperidone 9‐hydroxylation activities than extensive metabolizers did at 5 μM of risperidone; this difference was not evident at 50 μM of risperidone. The recombinant CYP3A5 Vmax/Km value for risperidone 9‐hydroxylation was 30% that of CYP3A4, and liver microsomes from CYP3A5 expressers had similar risperidone 9‐hydroxylation activities to those of CYP3A5 poor expressers. The plasma concentration/dose ratios for risperidone and paliperidone in 27 Japanese patients were not significantly influenced by the CYP2D6 or CYP3A5 genotypes. Conclusions Individual differences in metabolic clearance of risperidone under the present conditions were not significantly influenced by the genotypes of CYP2D6 or CYP3A5. Copyright © 2016 John Wiley & Sons, Ltd.
Author Goto, Akiko
Yamazaki, Hiroshi
Okubo, Maho
Murayama, Norie
Akimoto, Youichi
Morita, Shoko
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Keywords clearance
paliperidone
CYP2D6
CYP3A5
Japanese
risperidone
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Scordo MG, Spina E, Facciola G, et al. 1999. Cytochrome P450 2D6 genotype and steady state plasma levels of risperidone and 9-hydroxyrisperidone. Psychopharmacology (Berl) 147: 300-305.
Okubo M, Murayama N, Miura J, et al. 2012. A rapid multiplex PCR assay that can reliably discriminate the cytochrome P450 2D6 whole-gene deletion allele from 2D6*10 alleles. Clin Chim Acta 413: 1675-1677.
Yamazaki H, Mimura M, Sugahara C, et al. 1994. Catalytic roles of rat and human cytochrome P450 2A enzymes in testosterone 7 alpha- and coumarin 7-hydroxylations. Biochem Pharmacol 48: 1524-1527.
Gunes A, Spina E, Dahl ML, et al. 2008. ABCB1 polymorphisms influence steady-state plasma levels of 9-hydroxyrisperidone and risperidone active moiety. Ther Drug Monit 30: 628-633.
Lamba J, Hebert JM, Schuetz EG, et al. 2012. PharmGKB summary: very important pharmacogene information for CYP3A5. Pharmacogenet Genomics 22: 555-558.
Novalbos J, Lopez-Rodriguez R, Roman M, et al. 2010. Effects of CYP2D6 genotype on the pharmacokinetics, pharmacodynamics, and safety of risperidone in healthy volunteers. J Clin Psychopharmacol 30: 504-511.
Grant S, Fitton A. 1994. Risperidone. A review of its pharmacology and therapeutic potential in the treatment of schizophrenia. Drugs 48: 253-273.
Okubo M, Murayama N, Shimizu M, et al. 2013. CYP3A4 intron 6 C>T polymorphism (CYP3A4*22) is associated with reduced CYP3A4 protein level and function in human liver microsomes. J Toxicol Sci 38: 349-354.
Jovanovic N, Bozina N, Lovric M, et al. 2010. The role of CYP2D6 and ABCB1 pharmacogenetics in drug-naive patients with first-episode schizophrenia treated with risperidone. Eur J Clin Pharmacol 66: 1109-1117.
Yamaori S, Yamazaki H, Iwano S, et al. 2005. Ethnic differences between Japanese and Caucasians in the expression levels of mRNAs for CYP3A4, CYP3A5 and CYP3A7: lack of co-regulation of the expression of CYP3A in Japanese livers. Xenobiotica 35: 69-83.
Yamaori S, Yamazaki H, Iwano S, et al. 2004. CYP3A5 contributes significantly to CYP3A-mediated drug oxidations in liver microsomes from Japanese subjects. Drug Metab Pharmacokinet 19: 120-129.
2009; 24
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2003; 25
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SSID ssj0009909
Score 2.1393564
Snippet Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its...
There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its...
Objective There are conflicting reports regarding the effects of cytochrome P450 (P450, CYP) genotypes on the plasma concentrations of risperidone and its...
SourceID proquest
pubmed
crossref
wiley
istex
SourceType Aggregation Database
Index Database
Enrichment Source
Publisher
StartPage 93
SubjectTerms Adult
Aged
Antipsychotic Agents - pharmacokinetics
Antipsychotic Agents - therapeutic use
Asian Continental Ancestry Group - genetics
clearance
CYP2D6
CYP3A5
Cytochrome P-450 CYP1A2 - metabolism
Cytochrome P-450 CYP2D6 - genetics
Cytochrome P-450 CYP2D6 - metabolism
Cytochrome P-450 CYP3A - genetics
Cytochrome P-450 CYP3A - metabolism
Dose-Response Relationship, Drug
Female
Genotyping Techniques
Humans
Japan
Japanese
Male
Microsomes, Liver - drug effects
Microsomes, Liver - enzymology
Middle Aged
paliperidone
Recombinant Proteins - metabolism
risperidone
Risperidone - pharmacokinetics
Risperidone - therapeutic use
Smoking - genetics
Smoking - metabolism
Young Adult
Title Individual differences in in vitro and in vivo metabolic clearances of antipsychotic risperidone from Japanese subjects genotyped for cytochrome P450 2D6 and 3A5
URI https://api.istex.fr/ark:/67375/WNG-J0FRXCWG-J/fulltext.pdf
https://onlinelibrary.wiley.com/doi/abs/10.1002%2Fhup.2516
https://www.ncbi.nlm.nih.gov/pubmed/26856541
https://www.proquest.com/docview/1770798035
https://www.proquest.com/docview/1771448257
https://www.proquest.com/docview/1776646849
Volume 31
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