Influence of cytochrom P450 CYP2C9 polymorphism on the pharmacokinetics of tolbutamide metabolism using oligonucleotide genotyping microarray / 药学学报
Acta Pharmaceutica Sinica
;
(12): 695-699, 2005.
Article
Dans Chinois
| WPRIM
| ID: wpr-353426
ABSTRACT
<p><b>AIM</b>To investigate the influence of cytochrom P450 CYP2C9 polymorphism on the pharmacokinetics of tolbutamide.</p><p><b>METHODS</b>An oligonucleotide microarray was designed and fabricated to genotype the CYP2C9 accurately and quickly. 137 healthy volunteers were genotyped with the array to investigate the frequency of CYP2C9 functional SNPs. Moreover, 1 homozygous mutant, 9 heterozygous and 10 wild-genotypes subjects in the assay were selected randomly and sequenced directly. After orally taking tolbutamide, blood samples and urine samples were collected, and their pharmacokinetics was studied with HPLC.</p><p><b>RESULTS</b>CYP2C9 *1/*3 were found in 9 of 137 volunteers, CYP2C9 *3/*3 in only one, others were all CYP2C9 *1/*1 wild types. CYP2C9 *2, CYP2C9 *4 and CYP2C9 *5 alleles were not detected. Direct sequencing of the purified PCR products of the heterozygotes, mutant homozygotes and ten wild type individuals gave a corresponding result to that genotyped by microarray. Pharmacokinetic outcome showed that the individuals with CYP2C9 *1/*3 or CYP2C9 *3/*3 had slower metabolic elimination of tolbutamide than those with CYP2C9 *1/*1.</p><p><b>CONCLUSION</b>CYP2C9 genetic polymorphism has a significant influence on the pharmacokinetics of tolbutamide. Pharmacogenomic study will be helpful in guiding rational and individualized medication. Key words tolbutamide; cytochrom P450 CYP2C9; allele; single nucleotide polymorphism; genotyping</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Tolbutamide
/
Pharmacocinétique
/
Aryl hydrocarbon hydroxylases
/
Répartition aléatoire
/
Séquençage par oligonucléotides en batterie
/
Polymorphisme de nucléotide simple
/
Cytochrome P-450 CYP2C9
/
Génétique
/
Génotype
/
Hétérozygote
Type d'étude:
Essai clinique contrôlé
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Acta Pharmaceutica Sinica
Année:
2005
Type:
Article
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