Stability of perfluorocarbon blood substitutes determined by sedimentation field-flow fractionation.
It is shown that the method known as sedimentation field-flow fractionation, which has been applied to the separation and characterization of many industrial and biological particles and recently to emulsions, can be used to obtain high-resolution droplet diameter profiles for perfluorocarbon blood substitutes. Following a description of the methodology, experiments are described for two commercial perfluorocarbon emulsions, Fluosol-DA 20% and Fluosol-43. The droplet diameter profiles for both of these blood substitutes are shown to shift to noticeably higher diameter values in less than 2 months. The diameter at the profile peak for Fluosol-DA 20%, for example, shifts from 0.19 to 0.27 micron in 56 days.
D001802:Blood Substitutes / Q000032:analysis*; D004338:Drug Combinations / Q000032:analysis; D004655:Emulsions; D005466:Fluorocarbons / Q000032:analysis*; D006895:Hydroxyethyl Starch Derivatives; D008722:Methods; D010316:Particle Size; D013997:Time Factors
D001802:Blood Substitutes; D004338:Drug Combinations; D004655:Emulsions; D005466:Fluorocarbons; D006895:Hydroxyethyl Starch Derivatives; C008807:perfluorotributylamine; C017323:glucose, glycerol, hydroxyethyl starch, perfluorodecalin, perfluorotripropylamine, pluronic F-68, salts, yolk phospholipids drug combination