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. 2000 Feb;91(2):255-60.
doi: 10.1111/j.1349-7006.2000.tb00939.x.

Sonodynamically induced antitumor effect of 4-formyloximethylidene-3-hydroxy-2-vinyl-deuterio-porphynyl(IX)-6,7-dia spartic acid (ATX-S10)

N Yumita  1 , R Nishigaki, I Sakata, S Nakajima, S Umemura
Affiliations

Sonodynamically induced antitumor effect of 4-formyloximethylidene-3-hydroxy-2-vinyl-deuterio-porphynyl(IX)-6,7-dia spartic acid (ATX-S10)

N Yumita et al. Jpn J Cancer Res. 2000 Feb.

Abstract

The sonodynamically induced antitumor effect of 4-formyloximethylidene-3-hydroxy-2-vinyl-deuterio-porphyn yl(IX)-6,7-diaspartic acid (ATX-S10) was investigated. Both in vitro and in vivo antitumor effects were tested in combination with ultrasound at 2 MHz. The rate of ultrasonically induced damage to isolated sarcoma 180 cells in air-saturated suspension was enhanced two-fold with 80 microM ATX-S10. This enhancement was significantly inhibited by histidine, which may suggest that it was mediated by ultrasonically induced oxidation. The coadministraion of 25 mg/kg ATX-S10 followed by ultrasonic exposure at 2 MHz stopped the growth of implanted colon 26 tumors at an intensity at which ultrasound alone showed only a slight antitumor effect.

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