Change in Pharmacokinetics of Mycophenolic Acid as a Function of Age in Rats and Effect of Coadministered Amoxicillin/Clavulanate
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- Ishizaki Junko
- Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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- Tsuda Tomoko
- Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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- Suga Yukio
- Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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- Ito Satsuki
- Department of Hospital Pharmacy, Kanazawa University School of Medicine
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- Arai Kunizo
- Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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- Sai Yoshimichi
- Department of Hospital Pharmacy, Kanazawa University School of Medicine Department of Medicinal Informatics, Graduate School of Medical Science, Kanazawa University
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- Miyamoto Ken-ichi
- Department of Hospital Pharmacy, Kanazawa University School of Medicine Department of Medicinal Informatics, Graduate School of Medical Science, Kanazawa University
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Abstract
Changes of mycophenolic acid (MPA) pharmacokinetics with aging were investigated in rats. We also compared the effect of concomitant amoxicillin/clavulanate combination (CVA/AMPC) on the pharmacokinetics of MPA in 4-week-old and 12-week-old rats (the package insert of CVA/AMPC warns of possible interaction with MPA). Four-week-old rats showed a 1.4-fold higher total body clearance of MPA and a lower volume of distribution of MPA (65%), compared to the values in 12-week-old rats. However, the difference in MPA pharmacokinetics disappeared when enterohepatic circulation was eliminated by bile duct cannulation (BDC). Concomitant CVA/AMPC significantly reduced plasma MPA concentration in intact rats of both age groups, and the age-dependent difference of MPA pharmacokinetics was no longer apparent. The effect of CVA/AMPC was not seen in rats that had undergone BDC, suggesting that the drug–drug interaction can be attributed to inhibition of enterohepatic circulation by CVA/AMPC. These results indicate that the aging-related alteration of MPA pharmacokinetics is a consequence of immature enterohepatic circulation in 4-week-old rats. Higher doses of MPA may be necessary in juveniles.
Journal
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- Biological and Pharmaceutical Bulletin
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Biological and Pharmaceutical Bulletin 35 (7), 1009-1013, 2012
The Pharmaceutical Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204632299392
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- NII Article ID
- 130001872101
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- NII Book ID
- AA10885497
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- COI
- 1:STN:280:DC%2BC38jps1OgsQ%3D%3D
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- ISSN
- 13475215
- 09186158
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- NDL BIB ID
- 023765443
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- PubMed
- 22791145
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed