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논문 기본 정보

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학술저널
저자정보
Kim, Seon-Hwa (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Kim, Kyu-Bong (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Um, So-Young (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Oh, Yun-Nim (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Chung, Myeon-Woo (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Oh, Hye-Young (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration) Choi, Ki-Hwan (Drug Metabolism Division, National Institute of Toxicological Research, Korea Food and Drug Administration)
저널정보
한국응용약물학회 Biomolecules & Therapeutics(구 응용약물학회지) Biomolecules & therapeutics 제17권 제3호
발행연도
2009.1
수록면
299 - 304 (6page)

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Rosiglitazone maleate (RGM) is widely used for improving insulin resistance. RGM is a moderate inhibitor of cytochrome P450 2C8 (CYP2C8) and is also mainly metabolized by CYP2C8. The aim of this study was to determine whether the effect of RGM on CYP2C8 is altered by co-treatment with other drugs, and whether amlodipine camsylate (AC) changes the pharmacokinetics (PK) of RGM. Of the 11 drugs that are likely to be co-administered with RGM in diabetic patients, seven drugs lowered the $IC_{50}$ value of RGM on CYP2C8 by more than 80%. In vitro CYP2C8 inhibitory assays of RGM in combination with drugs of interest showed that the $IC_{50}$ of RGM was decreased by 98.9% by AC. In a pharmacokinetic study, Sprague-Dawley (SD) rats were orally administered 1 mg/kg of RGM following by single or 10-consecutive daily administrations of 1.5 mg/kg/day of AC. No significant changes in the pharmacokinetic parameters of RGM were observed after a single administration of AC, but the AUC and $C_{max}$ values of RGM were significantly reduced by 36% and 31%, respectively, by multiple administrations of AC. In conclusion, RGM was found to be affected by AC by in vitro CYP2C8 inhibition testing, and multiple dosing of AC appreciably changed the pharmacokinetics of RGM. These findings suggest that a drug interaction exists between AC and RGM.

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