PMID- 25264342 OWN - NLM STAT- MEDLINE DCOM- 20150909 LR - 20231213 IS - 1099-081X (Electronic) IS - 0142-2782 (Linking) VI - 36 IP - 1 DP - 2015 Jan TI - Effects of the inhibition of intestinal P-glycoprotein on aliskiren pharmacokinetics in cynomolgus monkeys. PG - 15-33 LID - 10.1002/bdd.1920 [doi] AB - Aliskiren is a substrate for P-glycoprotein (P-gp) and is metabolized via cytochrome P450 3A4 (CYP3A4). The aim of the present study was to assess whether P-gp influenced the pharmacokinetics of aliskiren and also if drug-drug interactions (DDIs) mediated through P-gp could be reproduced in cynomolgus monkeys. The study investigated the pharmacokinetics of aliskiren in mdr1a/1b gene-deficient (P-gp KO) and wild-type (WT) mice. The area under the plasma concentration-time curve (AUC) following the oral administration of aliskiren was 6.9-fold higher in P-gp KO mice than in WT mice, while no significant differences were observed in the AUC or total plasma clearance following the intravenous administration of aliskiren to P-gp KO mice. Then the pharmacokinetics of aliskiren were evaluated and DDIs between aliskiren and P-gp inhibitors, such as cyclosporin A (CsA) and zosuquidar, examined in cynomolgus monkeys. The AUC for aliskiren were 8.3- and 42.1-fold higher after the oral administration of aliskiren with the concomitant oral administration of zosuquidar and CsA at doses of 10 and 30 mg/kg, respectively. In contrast, the AUC after the intravenous and oral administration of aliskiren was not significantly affected by the oral administration of zosuquidar or intravenous administration of CsA, respectively. These results indicated that P-gp strictly limited the intestinal absorption of aliskiren in mice and monkeys, and also that the effects of intestinal P-gp inhibition by CsA or zosuquidar on the pharmacokinetics of aliskiren were sensitively reproduced in monkeys. In conclusion, aliskiren can be used as a sensitive substrate to evaluate intestinal P-gp inhibition in monkeys. CI - Copyright (c) 2014 John Wiley & Sons, Ltd. FAU - Tsukimoto, Mikiko AU - Tsukimoto M AD - Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Toda, Saitama, Japan; Department of Clinical Pharmaceutics, School of Pharmaceutical Sciences, University of Shizuoka, Suruga, Shizuoka, Japan. FAU - Ohashi, Rikiya AU - Ohashi R FAU - Torimoto, Nao AU - Torimoto N FAU - Togo, Yoko AU - Togo Y FAU - Suzuki, Takashi AU - Suzuki T FAU - Maeda, Toshio AU - Maeda T FAU - Kagawa, Yoshiyuki AU - Kagawa Y LA - eng PT - Journal Article DEP - 20141031 PL - England TA - Biopharm Drug Dispos JT - Biopharmaceutics & drug disposition JID - 7911226 RN - 0 (ATP Binding Cassette Transporter, Subfamily B) RN - 0 (ATP Binding Cassette Transporter, Subfamily B, Member 1) RN - 0 (Amides) RN - 0 (Antihypertensive Agents) RN - 0 (Dibenzocycloheptenes) RN - 0 (Fumarates) RN - 0 (Quinolines) RN - 502FWN4Q32 (aliskiren) RN - 813AGY3126 (zosuquidar trihydrochloride) RN - 83HN0GTJ6D (Cyclosporine) RN - 9EI49ZU76O (multidrug resistance protein 3) SB - IM MH - ATP Binding Cassette Transporter, Subfamily B/*genetics MH - ATP Binding Cassette Transporter, Subfamily B, Member 1/*antagonists & inhibitors MH - Amides/*pharmacokinetics MH - Animals MH - Antihypertensive Agents/*pharmacokinetics MH - Area Under Curve MH - Cyclosporine/administration & dosage/pharmacology MH - Dibenzocycloheptenes/pharmacology MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Fumarates/*pharmacokinetics MH - Humans MH - Macaca fascicularis MH - Male MH - Mice MH - Mice, Knockout MH - Quinolines/pharmacology MH - Species Specificity MH - ATP-Binding Cassette Sub-Family B Member 4 OTO - NOTNLM OT - aliskiren OT - cynomolgus monkeys OT - inhibition OT - intestine; P-gp OT - pharmacokinetics EDAT- 2014/09/30 06:00 MHDA- 2015/09/10 06:00 CRDT- 2014/09/30 06:00 PHST- 2014/06/15 00:00 [received] PHST- 2014/09/08 00:00 [revised] PHST- 2014/09/21 00:00 [accepted] PHST- 2014/09/30 06:00 [entrez] PHST- 2014/09/30 06:00 [pubmed] PHST- 2015/09/10 06:00 [medline] AID - 10.1002/bdd.1920 [doi] PST - ppublish SO - Biopharm Drug Dispos. 2015 Jan;36(1):15-33. doi: 10.1002/bdd.1920. Epub 2014 Oct 31.