Sonodynamic therapy on chemically induced mammary tumor: Pharmacokinetics, tissue distribution and sonodynamically induced antitumor effect of porfimer sodium

Nagahiko Yumita, Nobuo Okuyama, Kazuaki Sasaki, Shin Ichiro Umemura

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22 Citations (Scopus)

Abstract

The sonodynamically induced antitumor effect of porfimer sodium (PF) was evaluated on a chemically induced mammary tumor in Sprague-Dawley rats. The timing of 24 h after the administration of PF was chosen for the ultrasonic exposure, based on pharmacokinetic analysis of the PF concentrations in the tumor, plasma, skin and muscle. At a PF dose not less than 2.5 mg/kg and at a free-field ultrasonic intensity not less than 3 W/cm2, the synergistic effect between PF administration and ultrasonic exposure on the tumor growth inhibition was significant. The ultrasonic intensity showed a relatively sharp threshold for the synergistic antitumor effect, which is typical of an ultrasonic effect mediated by acoustic cavitation. These results suggest that PF is a potentially useful as a sonosensitizer for sonodynamic treatment of chemically induced tumors.

Original languageEnglish
Pages (from-to)765-769
Number of pages5
JournalCancer science
Volume95
Issue number9
DOIs
Publication statusPublished - 2004 Sep

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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