Influence of SLCO1B3 Gene Polymorphism on the Pharmacokinetics of Digoxin in Terminal Renal Failure
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- TSUJIMOTO Masayuki
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Kyoto Pharmaceutical University
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- DAN Yukihiko
- Department of Medico-Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University
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- HIRATA Sumio
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Kumamoto University
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- OHTANI Hisakazu
- Laboratory of Drug Informatics, Graduate School of Pharmaceutical Sciences, The University of Tokyo
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- SAWADA Yasufumi
- Laboratory of Drug Informatics, Graduate School of Pharmaceutical Sciences, The University of Tokyo
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Digoxin (DX) is mainly excreted unchanged in the urine. In patients undergoing hemodialysis (HD patients), the relative contribution of hepatic elimination is increased. DX is a substrate of OATP1B3 (SLCO1B3), expressed on the sinusoidal membranes of hepatocytes in humans. Therefore, we investigated the relationship between SLCO1B3 gene polymorphisms and the value of trough concentration-to-dose ratio (C/D ratio) of DX in HD patients.<br> We investigated two deletion polymorphisms in complete linkage disequilibrium (-28 to -11 and -7 to -4) and two SNPs in complete linkage disequilibrium (T334G and G699A). Blood was sampled 62-72 hours after the oral administration of DX.<br> The C/D ratio of DX was lower in patients with the deletion allele than in those homozygous for the insertion allele, and was lower in patients with the 334T/669G allele than in those homozygous for the 334G/699A allele, although the differences were not statistically significant. The C/D ratio of DX was significantly higher in patients with homozygous for the insert-variant allele (median: 121.8 (ng/mL)/(mg/week/kg), range: 92.5-259.4 (ng/mL)/(mg/week/kg) than in others (median: 93.4 (ng/mL)/(mg/week/kg), range: 66.5-154.3 (ng/mL)/(mg/week/kg)).<br> In conclusion, the insert-variant allele of the OATP1B3 gene may increase the C/D ratio of DX in HD patients.<br>
収録刊行物
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- Drug Metabolism and Pharmacokinetics
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Drug Metabolism and Pharmacokinetics 23 (6), 406-411, 2008
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詳細情報 詳細情報について
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- CRID
- 1390001205179821824
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- NII論文ID
- 130004463043
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- ISSN
- 18800920
- 13474367
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- 使用不可