PMID: 6409003May 1, 1983Paper

Studies on biodegradable microspheres containing mitomycin C

Gan to kagaku ryoho. Cancer & chemotherapy
S FujimotoK Okui

Abstract

For the purpose of enhancing antitumor effects, we prepared heated albumin microspheres containing an antitumor drug, mitomycin C. The biodegradable MMC microspheres which have an average diameter of 45 +/- 8 mum contain approximately 10% of MMC and release in vitro approximately 20% of the MMC over 3-day period. The microspheres were injected into albino rabbit femoral artery of the hind leg into which a VX-2 tumor had been implanted. Peripheral blood levels of MMC were reduced as compared to the conventional MMC group, within 60 minutes after injection. Subsequently in the MMC-microsphere administered rabbits, the level was higher than in the conventional MMC administered group. The survival of VX-2 tumor-bearing rabbits prolonged markedly with MMC microspheres.

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