p-Aminohippurate Transport in Rat Renal Brush-Border Membranes : a Potential-Sensitive Transport System and an Anion Exchanger
スポンサーリンク
概要
- 論文の詳細を見る
Transport mechanisms of p-aminohippurate (PAH) were investigated in rat renal brush-border membrane vesicles. The uptake of PAH was stimulated by an inside-positive membrane potential created by K^+ and valinomycin. This potential-stimulated uptake of PAH was inhibited by various anion transport inhibitors and was saturable. In addition, PAH uptake in the presence of valinomycin was linearly increased in proportion to log[K^+]_<out>/[K^+]_<in>. On one hand, PAH uptake was stimulated by [^<14>C]PAH/PAH or [^<14>C]PAH/Cl^- exchange, and the [^<14>C]PAH/PAH exchange was insensitive to the membrane potential. The uptake by the exchanger was also inhibited by anion transport inhibitors, but the potential-stimulated uptake of PAH was more sensitive to furosemide and 4,4'-diiso-thiocyano-2,2'-disulfonic stilbene. On the contrary, [^<14>C]PAH/PAH exchange was more sensitive to urate than the potential-stimulated uptake of PAH. These findings indicate that PAH is transported by two distinct transport systems in rat renal brush-border membranes, a potential-sensitive transport system and an anion exchanger.
- 社団法人日本薬学会の論文
- 1993-04-15
著者
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高野 幹久
京都大学医学部附属病院薬剤部
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高野 幹久
京都大学医学部附属病院 薬剤部
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岡野 友信
京都大学医学部附属病院薬剤部
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堀 了平
京都大学医学部附属病院薬剤部
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前田 咲弥子
Geriatric Medicine Kyoto University Hospital Faculty Of Medicine Kyoto University
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大岡 康
Departments of Pharmacy Kyoto University Hospital, Faculty of Medicine, Kyoto University
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高野 幹久
Departments of Pharmacy Kyoto University Hospital, Faculty of Medicine, Kyoto University
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岡野 友信
Departments of Pharmacy Kyoto University Hospital, Faculty of Medicine, Kyoto University
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乾 賢一
Departments of Pharmacy Kyoto University Hospital, Faculty of Medicine, Kyoto University
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堀 了平
Departments of Pharmacy Kyoto University Hospital, Faculty of Medicine, Kyoto University
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高野 幹久
Department Of Pharmacy Kyoto University Hospital Faculty Of Medicine Kyoto University
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堀 了平
Department Of Pharmacy Kyoto University Hospital
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乾 賢一
Department Of Pharmacy Kyoto University Hospital
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大岡 康
Departments Of Pharmacy Kyoto University Hospital Faculty Of Medicine Kyoto University
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