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Rasmussen AJ, Pedersen M, Griffin BT, Holm R, Nielsen CU. Digestion of surfactants does not affect their ability to inhibit P-gp-mediated transport in vitro. Int J Pharm 2024; 656:124120. [PMID: 38621613 DOI: 10.1016/j.ijpharm.2024.124120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/17/2024]
Abstract
While various non-ionic surfactants at low concentrations have been shown to increase the transport of P-gp substrates in vitro, in vivo studies in rats have shown that a higher surfactant concentration is needed to increase the oral absorption of e.g. the P-gp substrates digoxin and etoposide. The aim of the present study was to investigate if intestinal digestion of surfactants could be the reason for this deviation between in vitro and in vivo data. Therefore, Kolliphor EL, Brij-L23, Labrasol and polysorbate 20 were investigated for their ability to inhibit P-gp and increase digoxin absorption in vitro. Transport studies were performed in Caco-2 cells, while P-gp inhibition and cell viability assays were performed in MDCKII-MDR1 cells. Polysorbate 20, Kolliphor EL and Brij-L23 increased absorptive transport and decreased secretory digoxin transport in Caco-2 cells, whereas only polysorbate 20 and Brij-L23 showed P-gp inhibiting properties in the MDCKII-MDR1 cells. Polysorbate 20 and Brij-L23 were chosen for in vitro digestion prior to transport- or P-gp inhibiting assays. Brij-L23 was not digestible, whereas polysorbate 20 reached a degree of digestion around 40%. Neither of the two surfactants showed any significant difference in their ability to affect absorptive or secretory transport of digoxin after pre-digestion. Furthermore, the P-gp inhibiting effects of polysorbate 20 were not decreased significantly. In conclusion, the mechanism behind the non-ionic surfactant mediated in vitro P-gp inhibition seemed independent of the intestinal digestion and the results presented here did not suggest it to be the cause of the observed discrepancy between in vitro and in vivo.
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Affiliation(s)
- Asbjørn Jaensch Rasmussen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55 DK-5230, Odense M, Denmark
| | - Maria Pedersen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55 DK-5230, Odense M, Denmark
| | - Brendan T Griffin
- School of Pharmacy, University College Cork, College Road, Cork T12 YN60, Ireland
| | - René Holm
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55 DK-5230, Odense M, Denmark
| | - Carsten Uhd Nielsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55 DK-5230, Odense M, Denmark.
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Georgantzopoulou A, Cambier S, Serchi T, Kruszewski M, Balachandran YL, Grysan P, Audinot JN, Ziebel J, Guignard C, Gutleb AC, Murk AJ. Inhibition of multixenobiotic resistance transporters (MXR) by silver nanoparticles and ions in vitro and in Daphnia magna. Sci Total Environ 2016; 569-570:681-689. [PMID: 27376922 DOI: 10.1016/j.scitotenv.2016.06.157] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/19/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
The P-glycoprotein (P-gp, ABCB1) and multidrug resistance associated protein 1 (MRP1), important members of the ABC (ATP-binding cassette) transporters, protect cells and organisms via efflux of xenobiotics and are responsible for the phenomenon of multidrug or multixenobiotic resistance (MXR). In this study we first evaluated, in vitro, the interaction of silver nanoparticles (Ag NPs, 20, 23 and 27nm), Ag 200nm particles and Ag ions (AgNO3) with MXR efflux transporters using MDCKII and the P-gp over-expressing MDCKII-MDR1 cells and calcein-AM as a substrate of the transporters. Next the in vivo modulation of MXR activity was studied in Daphnia magna juveniles with the model P-gp and MRP1 inhibitors verapamil-HCl and MK571, respectively. The common environmental contaminants perfluorooctane sulfonate and bisphenol A, previously observed to interfere with the P-gp in vitro, also inhibited the efflux of calcein in vivo. Small-sized Ag NPs (with biomolecules present on the surface) and AgNO3 inhibited the MXR activity in daphnids and MDCKII-MDR1 cells, but abcb1 gene expression remained unchanged. Both Ag NPs and dissolved ions contributed to the effects. This study provides evidence of the interference of Ag NPs and AgNO3 with the MXR activity both in vitro and in D. magna, and should be taken into account when Ag NP toxicity is assessed.
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Affiliation(s)
- Anastasia Georgantzopoulou
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Sébastien Cambier
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Tommaso Serchi
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Marcin Kruszewski
- Faculty of Medicine, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland; Institute of Nuclear Chemistry and Technology, Centre for Radiobiology and Biological Dosimetry, Dorodna 16, 03-195 Warszawa, Poland
| | | | - Patrick Grysan
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Jean-Nicolas Audinot
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Johanna Ziebel
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Cédric Guignard
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Arno C Gutleb
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Forneaux, L-4362 Esch-sur-Alzette, Luxembourg.
| | - AlberTinka J Murk
- Marine Animal Ecology Group, Wageningen University, Wageningen, The Netherlands; Wageningen Institute for Marine Resources & Ecosystem Studies, IMARES, IJmuiden, The Netherlands.
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