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Long-term levothyroxine treatment decreases the oral bioavailability of cyclosporin A by inducing P-glycoprotein in small intestine.
http://hdl.handle.net/2297/11554
http://hdl.handle.net/2297/1155418e13638-9802-46d6-8c55-e72df658b32a
名前 / ファイル | ライセンス | アクション |
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PH-PR-MIYAMOTO-K-324.pdf (411.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | Long-term levothyroxine treatment decreases the oral bioavailability of cyclosporin A by inducing P-glycoprotein in small intestine. | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Jin, Mingji
× Jin, Mingji× Shimada, Tsutomu× Shintani, Miki× Yokogawa, Koichi× Nomura, Masaaki× Miyamoto, Ken-ichi |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学附属病院薬剤部 | |||||
書誌情報 |
Drug metabolism and pharmacokinetics. 巻 20, 号 5, p. 324-330, 発行日 2005-10-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1347-4367 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1162652X | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.2133/dmpk.20.324 | |||||
出版者 | ||||||
出版者 | 日本薬物動態学会 Japanese Society for the Study of Xenobiotics (JSSX) | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We have noticed that the trough level of blood concentration of cyclosporin A (CyA) tends to be lower in patients receiving long-term oral levothyroxine (LTX) than in patients not receiving LTX. We confirmed this clinical observation in experiments using Wistar rats orally given LTX (8 microg/kg) or saline (control) for 3 weeks, followed by CyA (10 mg/kg). The LTX treatment had little effect on the blood concentrations of CyA after i.v. administration, whereas they were decreased significantly after p.o. administration. After p.o. administration, the value of the area under the blood concentration-time curve from 0 to 24 hr and the bioavailability of CyA in the LTX group were decreased to only about one-fifth and a quarter of those in the control group, respectively. After treatment with LTX, the expression levels of mdr1a, mdr1b and CYP3A2 mRNAs in the duodenum were markedly increased to about twice the control, but in jejunum, ileum and liver the expression levels were little changed. These findings suggest that the absorption of CyA, which occurs mainly from the upper intestine, is reduced as a result of efflux transport via P-glycoprotein induced by LTX. In conclusion, careful monitoring of CyA levels is required in the event of LTX administration to patients receiving immunotherapy with CyA. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |