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Transfer of metformin across the rat placenta is mediated by organic cation transporter 3 (OCT3/SLC22A3) and multidrug and toxin extrusion 1 (MATE1/SLC47A1) protein
D. Ahmadimoghaddam, F. Staud,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- antiportéry metabolismus MeSH
- hypoglykemika metabolismus MeSH
- krysa rodu rattus MeSH
- maternofetální výměna látek MeSH
- metformin metabolismus MeSH
- placenta metabolismus MeSH
- potkani Wistar MeSH
- přenašeče organických aniontů nezávislé na sodíku metabolismus MeSH
- proteiny přenášející organické kationty metabolismus MeSH
- techniky in vitro MeSH
- těhotenství MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- těhotenství MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
In our previous studies we described functional expression of organic cation transporter 3 (OCT3) and multidrug and toxin extrusion 1 (MATE1) protein in the rat placenta. Since metformin is a substrate of both OCT3 and MATE1, in this study we used the model of dually perfused rat placenta to investigate the role of these transporters in metformin passage across the placenta. We observed concentration-dependent transplacental clearance of metformin in both maternal-to-fetal and fetal-to-maternal directions; in addition metformin crossed the placenta from the fetal to maternal compartment even against its concentration gradient. This transport was completely inhibited by MPP(+), a common OCT3 and MATE1 inhibitor. Furthermore, we observed that the oppositely directed H(+)-gradient can drive the secretion of metformin from placenta to maternal circulation, confirming apical efflux of metformin from trophoblast by MATE1. In conclusion, we suggest an important role of OCT3 and MATE1 in the transplacental transfer of metformin.
Citace poskytuje Crossref.org
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- $a In our previous studies we described functional expression of organic cation transporter 3 (OCT3) and multidrug and toxin extrusion 1 (MATE1) protein in the rat placenta. Since metformin is a substrate of both OCT3 and MATE1, in this study we used the model of dually perfused rat placenta to investigate the role of these transporters in metformin passage across the placenta. We observed concentration-dependent transplacental clearance of metformin in both maternal-to-fetal and fetal-to-maternal directions; in addition metformin crossed the placenta from the fetal to maternal compartment even against its concentration gradient. This transport was completely inhibited by MPP(+), a common OCT3 and MATE1 inhibitor. Furthermore, we observed that the oppositely directed H(+)-gradient can drive the secretion of metformin from placenta to maternal circulation, confirming apical efflux of metformin from trophoblast by MATE1. In conclusion, we suggest an important role of OCT3 and MATE1 in the transplacental transfer of metformin.
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