In vitro and in silico evaluation of P-glycoprotein inhibition through 99m Tc-methoxyisobutylisonitrile uptake

2018 ◽  
Vol 93 (3) ◽  
pp. 283-289 ◽  
Author(s):  
Seyed Sajad Hosseini Balef ◽  
Majid Piramoon ◽  
Seyed Jalal Hosseinimehr ◽  
Hamid Irannejad

2013 ◽  
Vol 221 ◽  
pp. S179-S180
Author(s):  
Fernando Remião ◽  
Renata Silva ◽  
Vânia Vilas-Boas ◽  
Daniel José Barbosa ◽  
Andreia Palmeira ◽  
...  


2015 ◽  
Vol 238 (2) ◽  
pp. S317 ◽  
Author(s):  
R. Silva ◽  
H. Carmo ◽  
V. Vilas-Boas ◽  
D.J. Barbosa ◽  
A. Palmeira ◽  
...  


2013 ◽  
Vol 10 (4) ◽  
pp. 1249-1261 ◽  
Author(s):  
Prashant V. Desai ◽  
Geri A. Sawada ◽  
Ian A. Watson ◽  
Thomas J. Raub


2016 ◽  
Vol 105 (2) ◽  
pp. 891-896 ◽  
Author(s):  
Wataru Kishimoto ◽  
Naoki Ishiguro ◽  
Eva Ludwig-Schwellinger ◽  
Thomas Ebner ◽  
Kazuya Maeda ◽  
...  


Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 707 ◽  
Author(s):  
Eva Martins ◽  
Vera Silva ◽  
Agostinho Lemos ◽  
Andreia Palmeira ◽  
Ploenthip Puthongking ◽  
...  

P-glycoprotein (P-gp) plays a crucial role in the protection of susceptible organs, by significantly decreasing the absorption/distribution of harmful xenobiotics and, consequently, their toxicity. Therefore, P-gp has been proposed as a potential antidotal pathway, when activated and/or induced. Knowing that xanthones are known to interact with P-gp, the main goal was to study P-gp induction or/and activation by six new oxygenated xanthones (OX 1-6). Furthermore, the potential protection of Caco-2 cells against paraquat cytotoxicity was also assessed. The most promising compound was further tested for its ability to increase P-gp activity ex vivo, using everted intestinal sacs from adult Wistar-Han rats. The oxygenated xanthones interacted with P-gp in vitro, increasing P-gp expression and/or activity 24 h after exposure. Additionally, after a short-incubation period, several xanthones were identified as P-gp activators, as they immediately increased P-gp activity. Moreover, some xanthones decreased PQ cytotoxicity towards Caco-2 cells, an effect prevented under P-gp inhibition. Ex vivo, a significant increase in P-gp activity was observed in the presence of OX6, which was selectively blocked by a model P-gp inhibitor, zosuquidar, confirming the in vitro results. Docking simulations between a validated P-gp model and the tested xanthones predicted these interactions, and these compounds also fitted onto previously described P-gp induction and activation pharmacophores. In conclusion, the in vitro, ex vivo, and in silico results suggest the potential of some of the oxygenated xanthones in the modulation of P-gp, disclosing new perspectives in the therapeutics of intoxications by P-gp substrates.



2019 ◽  
Vol 16 (5) ◽  
pp. 1851-1863 ◽  
Author(s):  
Rikiya Ohashi ◽  
Reiko Watanabe ◽  
Tsuyoshi Esaki ◽  
Tomomi Taniguchi ◽  
Nao Torimoto-Katori ◽  
...  




2011 ◽  
Vol 100 (9) ◽  
pp. 4013-4023 ◽  
Author(s):  
Hiroshi Sugimoto ◽  
Shin-Ichi Matsumoto ◽  
Miho Tachibana ◽  
Shin-Ichi Niwa ◽  
Hideki Hirabayashi ◽  
...  


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