20
Views
12
CrossRef citations to date
0
Altmetric
Original Article

Dose Related Biodistribution & Elimination of 100% PFOB Emulsion

, , , , , & show all
Pages 683-684 | Published online: 11 Jul 2009
 

Abstract

Perfluoroctylbromide (PFOB) has been applied successfully as an oxygen carrier and a contrast agent for X-ray, computed tomography, ultrasound and Magnetic Resonance Imaging (MRI). Knowledge of the pharmacokinetics of emulsion particle uptake and elimination is critical for determining proper dose and timing of diagnostic studies. This study was intended to define major organ biodistribution and half-life as well as total body half-life as a function of dose.

Determination of biodistribution and major organ half-life was achieved by administering 100% PFOB emulsion intravenously to 180 rats divided into 3 dose groups of 0.3, 0.6 & 1.0 g/kg. Each group was divided into 6 subgroups (n = 10; S male and 5 female). Each subgroup was sacrificed at either 6 or 90 min., 1,2,7, or 28 days post injection. 16 different tissue samples were collected and PFOB concentration determined by iso-octane extraction and gas chromatographic (GC) analysis. Total body half-life was determined by administering PFOB intravenously to 60 rats divided into 3 dose groups of 0.6, 1.5 & 5.0 g/kg. Each group contained 10 pairs (5 male and S female). Pairs were placed in a metabolic cage at 1, 6 & 12 hrs., 1, 2, 4, 7, 11, 16, & 21 days following PFOB infusion. The metabolic cage facilitated the seperate collection of expired air, urine & feces. PFOB was extracted from expired air by a series of iso-octane traps. PFOB losses from expired air, urine and feces were quantified by GC analysis.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.