Journal
CURRENT OPINION IN PHARMACOLOGY
Volume 13, Issue 6, Pages 847-852Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coph.2013.08.010
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Funding
- German Federal Ministry of Education and Research (BMBF) [13EX1015B]
- DOKTOR ROBERT PFLEGER-Stiftung Bamberg
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Important export pumps expressed in the apical membrane of enterocytes are P-glycoprotein (P-gp), breast cancer resistance protein (BCRP) and multidrug resistance protein 2 (MRP2). They are believed to be a crucial part of the bodies' defense mechanisms against potentially toxic, orally administered xenobiotics. In particular P-gp and BCRP also limit the bioavailability of drugs. Inhibition of these intestinal export pumps by concomitantly administered drugs leads to increased plasma concentrations, whereas induction can reduce absorption of the substrate drugs and decrease plasma concentrations. The role of polymorphisms in genes encoding for these transporters will also be discussed. Taken together this review will focus on the role of intestinal export pumps using selected examples from clinical studies in humans.
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