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Molecular Mechanism of Ochratoxin A Transport in the Kidney

Author(s): Naohiko Anzai | Promsuk Jutabha | Hitoshi Endou

Journal: Toxins
ISSN 2072-6651

Volume: 2;
Issue: 6;
Start page: 1381;
Date: 2010;
Original page

Keywords: ochratoxin A | mycotoxin | organic anion transporter | kidney | nephrotoxicity

The mycotoxin, ochratoxin A (OTA), is thought to be responsible for Balkan endemic nephropathy. OTA accumulates in several tissues, especially in the kidneys and liver. The excretion of OTA into urine is thought to be mainly by tubular secretion, presumably via the organic anion transport system. Recently, several families of multispecific organic anion transporters have been identified: organic anion transporters (OATs), organic anion-transporting polypeptides (OATPs), oligopeptide transporters (PEPTs), and ATP-binding cassette (ABC) transporters, such as MRP2 and BCRP. These renal transporters mediate the transmembrane transport of OTA and play a pivotal role in the development of OTA-induced nephrotoxicity.
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