Absorption, Biliary Excretion, and Metabolism of a New Cholelitholytic Agent, Ursodeoxycholyl N-Carboxymethylglycine and Its Esters in Rats
スポンサーリンク
概要
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Intestinal absorption, biliary excretion and metabolism of a calcium gallstone dissolving agent, [11,12-^3H] ursodeoxycholyl-N-carboxymethylglycine (UDC-CMG) and its monoethyl, diethyl and dipivaloyloxyethyl esters (UDC-CMG-Et, UDC-CMG-Et_2 and UDC-CMG-PV_2) were studied in bile duct cannulated rats. Biliary recovery of [^3H]-labeled UDC-CMG, UDC-CMG-Et and UDC-CMG-Et_2 after intraduodenal administration were 65%, 80%, 98%, respectively. Radio-thin layer chromatography analysis of the bile revealed that UDC-CMG didn't undergo any biotransformation during administration and excretion. About 80% and 20% of radioactivity recovered in the bile was identified as UDC-CMG-Et and UDC-CMG, respectively, after intraduodenal administrations of [^3H] UDC-CMG-Et_2 and [^3H] UDC-CMG-Et. The administered intact UDC-CMG-Et_2 was not found in the bile. Intraduodenally administered [^3H] UDC-CMG-PV_2 was rapidly recovered in the bile. The total recovery rate was 78% within a 24 h period. More than 80% of the radioactivity recovered in the bile was found as UDC-CMG. Lesser amounts of the monopivaloyloxyethyl ester of UDC-CMG were also found, but intact UDC-CMG-PV_2 was not detected in the bile as in the case of UDC-CMG-Et_2. Among the esters of UDC-CMG investigated in the present studies, only UDC-CMG-PV_2 was excreted in the bile mainly as the perhydrolyzed form, UDC-CMG. These results suggest the usefulness of UDC-CMG-PV_2 as the pro-drug in calcium gallstone dissolution therapy.
- 公益社団法人日本薬学会の論文
著者
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Kuramoto T
Hiroshima Univ. School Of Medicine Hiroshima Jpn
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Kihira K
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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Kihira Kenji
Department Of Pharmaceutical Services Hiroshima University Hospital : Division Of Clinical Pharmaceu
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HATONO Shunso
Wakunaga Pharmaceutical Co., Ltd.
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YOSHIDA Harumi
Wakunaga Pharmaceutical Co., Ltd.
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MATSUNAMI Masumi
Wakunaga Pharmaceutical Co., Ltd.
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IDE Yukako
Wakunaga Pharmaceutical Co., Ltd.
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MATSUDA Kaoru
Wakunaga Pharmaceutical Co., Ltd.
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YATSUNAMI Takashi
Wakunaga Pharmaceutical Co., Ltd.
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FUWA Tohru
Wakunaga Pharmaceutical Co., Ltd.
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KIHIRA Kenji
Wakunaga Pharmaceutical Co., Ltd.
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KURAMOTO Taiju
Wakunaga Pharmaceutical Co., Ltd.
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HOSHITA Takahiko
Wakunaga Pharmaceutical Co., Ltd.
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Ide Yukako
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Fuwa Tohru
Wakunaga Pharmaceutical Co.
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Fuwa Tohru
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Hatono Shunso
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Matsuda Kaoru
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Yoshida Harumi
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Matsunami Masumi
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Yatsunami Takashi
Wakunaga Pharmaceutical Co. Ltd.:institute Of Pharmaceutical Sciences Hiroshima University School Of
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Hoshita T
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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