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논문 기본 정보

자료유형
학술저널
저자정보
NamKoong, Eun-Mi (Research Institute of Pharmaceutical Sciences & Department of Pharmaceutics, College of Pharmacy, Seoul National University) Kim, In-Wha (Research Institute of Pharmaceutical Sciences & Department of Pharmaceutics, College of Pharmacy, Seoul National University) Kim, Dae-Duk (Research Institute of Pharmaceutical Sciences & Department of Pharmaceutics, College of Pharmacy, Seoul National University) Chung, Suk-Jae (Research Institute of Pharmaceutical Sciences & Department of Pharmaceutics, College of Pharmacy, Seoul National University) Shim, Chang-Koo (Research Institute of Pharmaceutical Sciences & Department of Pharmaceutics, College of Pharmacy, Seoul National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제11호
발행연도
2007.1
수록면
1,482 - 1,488 (7page)

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The purpose of this study was to investigate the effect of probenecid, an inhibitor of the MRP2/ABCC transporter, on the pharmacokinetics and transport of belotecan (7-[2-(N-isopropy-lamino)ethyl]-(20S)-camptothecin). The effect of probenecid on the pharmacokinetics of belotecan was studied in rats. When belotecan was injected as a bolus dose of 5 mg/kg after probenecid was infused at a rate of 42.8 mg/2 mL/h/kg, the cumulative biliary excretion amounts and biliary clearance $(CL_b)$ of belotecan decreased ($28.29{\pm}2.83$ versus $19.96{\pm}1.45%$ of dose and $161.01{\pm}26.95$ versus $92.66{\pm}1.45$ mL/min/kg), whereas the systemic pharmacokinetics did not change. This indicates that the MRP2 transporter is involved in the biliary excretion of belotecan. The involvement of MRP2 in the secretory transport was further characterized using Caco-2 cell monolayers expressing MRP2. The apparent permeability across Caco-2 cell monolayers from basolateral to apical was 2.3 times greater than that from the apical to the basolateral side at the $50{\mu}M$ belotecan. In addition, probenecid significantly decreased the basolateral-to-apical transport of belotecan (52.9%). These results indicate that MRP2 is involved in the secretory transport of belotecan in biliary excretion.

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