DM27, an enaminone, modifies the in vitro transport of antiviral therapeutic agents
Document Type
Article
Publication Title
Biopharmaceutics and Drug Disposition
Abstract
Objective - For most antiviral drugs, low or variable bioavailability is attributed to poor absorption, susceptibility to efflux, or first pass metabolism. Enaminones are beta dicarbonyl compounds, which display P-glycoprotein (P-gp) substrate properties with high efflux ratios. This study investigates the influence of DM27, an enaminone, on the in vitro transport of antiviral agents and the possibility of using DM27 as a P-gp inhibitor to prevent the efflux of certain antiretroviral agents. Methods - The transport of [3H]amprenavir, [3H]saquinavir, [3H]ritonavir, [14C]zidovudine (AZT) and [3H]acyclovir was evaluated across Caco-2 cells with DM27 (10-10-10-4 M). In addition, the effect of DM27 (10-6M) on the transport of transcellular and paracellular markers was tested to evaluate its influence on these transport pathways. The apparent permeability coefficient (Papp) for each drug or marker was calculated with/without DM27 and toxicity evaluation for DM27 was performed using the MTS assay. Results - The mean Papp for the investigated antiviral agents significantly increased by 22%-51% after DM27 incubation without any toxicity to the Caco-2 cells. In addition, DM27 did not influence the transcellular or paracellular transport of propranolol and mannitol, respectively. Conclusions - DM27, an enaminone, increased the transport of antiretroviral drugs and acyclovir in a nontoxic manner without affecting the paracellular or transcellular transport of these drugs. This study suggests that DM27 may be used as a P-gp efflux inhibitor to enhance the oral bioavailability of antiviral drugs and that drug-drug interactions will most probably be encountered upon co-administration of P-gp substrate drugs with enaminones. Copyright © 2004 John Wiley & Sons, Ltd.
First Page
227
Last Page
236
DOI
10.1002/bdd.404
Publication Date
7-1-2004
Recommended Citation
Salama, Noha N.; Scott, Kenneth R.; and Eddington, Natalie D., "DM27, an enaminone, modifies the in vitro transport of antiviral therapeutic agents" (2004). Pharmaceutical and Administrative Sciences Faculty Publications. 255.
https://doi.org/10.1002/bdd.404
https://collections.uhsp.edu/pharm-admin-sciences_pubs/255