Effect of ultrasound on the permeability of vascular wall to nano-emulsion droplets.
The effect of ultrasound on the permeability of blood vessels to nano-emulsion droplets was investigated using excised mouse carotid arteries as model blood vessels. Perfluorocarbon nano-droplets were formed by perfluoro-15-crown-5-ether and stabilized by poly(ethylene oxide)-co-poly(DL-lactide) block co-polymer shells. Nano-droplet fluorescence was imparted by interaction with fluorescein isothiocyanate-dextran (molecular weight = 70,000 Da). The permeability of carotid arteries to nano-droplets was studied in the presence and absence of continuous wave or pulsed therapeutic 1-MHz ultrasound. The data indicated that the application of ultrasound resulted in permeabilization of the vascular wall to nano-droplets. The effect of continuous wave ultrasound was substantially stronger than that of pulsed ultrasound of the same total energy. No effect of blood vessel pre-treatment with ultrasound was observed.
Published In/Presented At
Thakkar, D., Gupta, R., Monson, K., & Rapoport, N. (2013). Effect of ultrasound on the permeability of vascular wall to nano-emulsion droplets. Ultrasound in medicine & biology, 39(10), 1804–1811. https://doi.org/10.1016/j.ultrasmedbio.2013.04.008
Medicine and Health Sciences | Oncology
Department of Radiation Oncology