Modeling amantadine treatment of influenza A virus in vitro |
| |
Authors: | Beauchemin Catherine A A McSharry James J Drusano George L Nguyen Jack T Went Gregory T Ribeiro Ruy M Perelson Alan S |
| |
Institution: | a Department of Physics, Ryerson University, 350 Victoria St., Toronto, ON, M5B 2K3 Toronto, ON, Canada b Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM, USA c Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM, USA d Ordway Research Institute, Albany, NY, USA e Adamas Pharmaceuticals, Emeryville, CA, USA |
| |
Abstract: | We analyzed the dynamics of an influenza A/Albany/1/98 (H3N2) viral infection, using a set of mathematical models highlighting the differences between in vivo and in vitro infection. For example, we found that including virion loss due to cell entry was critical for the in vitro model but not for the in vivo model. Experiments were performed on influenza virus-infected MDCK cells in vitro inside a hollow-fiber (HF) system, which was used to continuously deliver the drug amantadine. The HF system captures the dynamics of an influenza infection, and is a controlled environment for producing experimental data which lend themselves well to mathematical modeling. The parameter estimates obtained from fitting our mathematical models to the HF experimental data are consistent with those obtained earlier for a primary infection in a human model. We found that influenza A/Albany/1/98 (H3N2) virions under normal experimental conditions at rapidly lose infectivity with a half-life of , and that the lifespan of productively infected MDCK cells is . Finally, using our models we estimated that the maximum efficacy of amantadine in blocking viral infection is ∼74%, and showed that this low maximum efficacy is likely due to the rapid development of drug resistance. |
| |
Keywords: | Drug Resistance Hollow-fiber Mathematical modeling Infectious diseases |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|