Sequencing and tissue distribution of the canine MRP2 gene compared with MRP1 and MDR1

被引:48
作者
Conrad, S
Viertelhaus, A
Orzechowski, A
Hoogstraate, J
Gjellan, K
Schrenk, D
Kauffmann, HM
机构
[1] Univ Kaiserslautern, D-67663 Kaiserslautern, Germany
[2] AstraZeneca, Dept Biopharmacut & Pharmacokinet, S-15185 Sodertalje, Sweden
关键词
multidrug resistance protein 1; multidrug resistance protein 2; MDR1/P-glycoprotein; expression analysis;
D O I
10.1016/S0300-483X(00)00354-1
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
The effects of xenobiotic drugs and toxic compounds depend largely on their kinetic properties, which can be influenced by transmembrane drug transporters like MDR1/P-glycoprotein and the drug-conjugate transporters multidrug resistance protein (MRP) 1 and 2. As the dog is a preferential species used in the pharmacological and toxicological evaluation of new drugs, we sequenced the canine MRP2 cDNA and investigated its expression ill various canine tissues compared with the related transporters MRP1 and P-glycoprotein. The tissue distribution pattern of these ABC-transporters differs partially from the distribution described in humans. So we found relatively high renal and low hepatic canine MRP2 expression levels, relatively high hepatic canine MRP1 expression levels, and quite high levels of MRP1 and P-glycoprotein in the dog brain. The knowledge of the tissue distribution pattern of these transporters will aid to interpret pharmacokinetic and toxicokinetic data gained from dog studies and to extrapolate them to humans. (C) 2001 Elsevier Science ireland Ltd. All rights reserved.
引用
收藏
页码:81 / 91
页数:11
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