Physiologically based pharmacokinetic model for composite nanodevices: effect of charge and size on in vivo disposition.

Abstract:

PURPOSE:To characterize temporal exposure and elimination of 5 gold/dendrimer composite nanodevices (CNDs) (5 nm positive, negative, and neutral, 11 nm negative, 22 nm positive) in mice using a physiologically based mathematical model. METHODS:400 ug of CNDs is injected intravenously to mice bearing melanoma cell lines. Gold content is determined from plasma and tissue samples using neutron activation analysis. A physiologically based pharmacokinetic (PBPK) model is developed for 5 nm positive, negative, and neutral and 11 nm negative nanoparticles and extrapolated to 22 nm positive particles. A global sensitivity analysis is performed for estimated model parameters. RESULTS:Negative and neutral particles exhibited similar distribution profiles. Unique model parameter estimates and distribution profiles explain similarities and differences relative to positive particles. The model also explains mechanisms of elimination by kidney and reticuloendothelial uptake in liver and spleen, which varies with particle size and charge. CONCLUSION:Since the PBPK model can capture the diverse temporal profiles of non-targeted nanoparticles, we propose that when specific binding ligands are lacking, size and charge of nanodevices govern most of their in vivo interactions.

journal_name

Pharm Res

journal_title

Pharmaceutical research

authors

Mager DE,Mody V,Xu C,Forrest A,Lesniak WG,Nigavekar SS,Kariapper MT,Minc L,Khan MK,Balogh LP

doi

10.1007/s11095-012-0784-7

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

2534-42

issue

9

eissn

0724-8741

issn

1573-904X

journal_volume

29

pub_type

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