Kinetics of ultrasonic drug delivery from targeted micelles

Ghaleb A. Husseini, Laura Kherbeck, William G. Pitt, Jeffrey A. Hubbell, Douglas A. Christensen, Diana Velluto

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


To minimize the adverse side effects of conventional chemotherapy, a targeted micellar drug carrier was investigated that retains hydrophobic drugs in its core and then releases the drug via ultrasonic activation. This paper compares the percent drug release from folated versus non-folated micelles by insonation at 70 kHz and different acoustic power densities. The encapsulated drug is Doxorubicin (Dox). A physical model of zero-order release with first-order re-encapsulation was used to fit the experimental kinetic data. Additionally, the acoustic activation power density and Gibbs free energy were introduced and calculated for folated and non-targeted micelles. The data suggests an important role of inertial cavitation in drug release and the presence of a power density threshold for inertial cavitation.

Original languageEnglish (US)
Article numberA23
Pages (from-to)2099-2104
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Issue number3
StatePublished - Mar 1 2015


  • 70-kHz ultrasound
  • Drug release
  • Folated micelles
  • Kinetic models
  • Pluronic P105
  • Re-encapsulation
  • Targeted drug delivery

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering


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