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Transport mechanism and affinity of [99mTc]Tc-mercaptoacetyltriglycine ([99mTc]MAG3) on the apical membrane of renal proximal tubule cells
https://repo.qst.go.jp/records/80274
https://repo.qst.go.jp/records/80274ee5f4883-d096-40a3-92cb-343b32779ccb
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-08-04 | |||||
タイトル | ||||||
タイトル | Transport mechanism and affinity of [99mTc]Tc-mercaptoacetyltriglycine ([99mTc]MAG3) on the apical membrane of renal proximal tubule cells | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Kobayashi, Masato
× Kobayashi, Masato× Nishi, Kodai× Mizutani, Asuka× Okudaira, Hiroyuki× Nakanishi, Takeo× Shikano, Naoto× Nishii, Ryuichi× Tamai, Ikumi× Kawai, Keiichi× Nishii, Ryuichi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Technetium-99m-labeled mercaptoacetyltriglycine ([99mTc]MAG3) is widely used for evaluation of transplanted kidneys, diagnosis of tubular necrosis, and scintigraphic studies of tubular function. [99mTc]MAG3 is a substrate for organic anion transporter (OAT)1 and OAT3 on the basolateral membrane side for renal secretion. We investigated the transport mechanism and affinity of [99mTc]MAG3 on the apical membrane of renal proximal tubule cells for renal secretion. Adenosine triphosphate-binding cassette (ABC) transporters for renal secretion of [99mTc]MAG3 were examined using ABC transporter vesicles expressing multiple drug resistance 1 (MDR1), breast cancer resistance protein (BCRP), multidrug resistance-associated protein (MRP)2, and MRP4. MK-571, a MRP inhibitor, was applied to measure the Km and Vmax of MRP2 and MRP4 in a vesicle transport assay. Single photon emission computed tomography (SPECT) was performed in normal rats and MRP2-deficient Eisai hyperbilirubinuria rats (EHBR) using [99mTc]MAG3 with and without MK-571. [99mTc]MAG3 uptake in adenosine triphosphate was significantly higher than that in adenosine monophosphate in vesicles that highly expressed MRP2 and MRP4. The affinity of [99mTc]MAG3 for MRP4 was higher than that for MRP2. Renal secretion via MRP2 and MRP4 was identified by comparing normal and EHBR rats with and without MK-571 on SPECT. [99mTc]MAG3 is transported via MRP2 and MRP4 on the apical membrane of renal proximal tubule cells. The affinity of MRP4 is higher than that of MRP2. | |||||
書誌情報 |
Nuclear Medicine and Biology 巻 84-85, p. 33-37, 発行日 2020-08 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0969-8051 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.nucmedbio.2020.01.002 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S0969805119305426 |