Intra-arterial application of magnetic nanoparticles for targeted thrombolytic therapy: A rat embolic model

Yunn Hwa Ma, Ya Wun Hsu, Yeu Jhy Chang, Mu Yi Hua, Jyh Ping Chen, Tony Wu*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

33 Scopus citations

Abstract

Targeted delivery of thrombolytic drug to the site of emboli exhibits potential to greatly reduce hemorrhagic side effect. A rat embolic model with an easy access of a magnet was established for study of the efficacy of magnetic drug targeting. In anesthetized rats, a whole blood clot produced in vitro was injected from the right iliac artery and lodged in the left iliac artery. Intra-arterial infusion of recombinant tissue plasminogen activator (rt-PA) thereafter significantly reversed the iliac flow within 15 min. Placement of an NdFeB magnet above the left iliac artery caused magnetic nanoparticle retention against hemodynamic dragging force in the presence and absence of the clot. Our results suggest the feasibility of this rat embolic model for the study of magnetic targeted delivery of thrombolytic drugs.

Original languageEnglish
Pages (from-to)342-346
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume311
Issue number1 SPEC. ISS.
DOIs
StatePublished - 04 2007

Keywords

  • Magnetic nanoparticle
  • Nanomedicine
  • Targeted drug delivery
  • Thromboembolic disease
  • Thrombolysis
  • Tissue plasminogen activator

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