Abstract

We studied an antitumor effect of a compound of 4-aminochromene derivatives (AX-554) in the tumor system of breast cancer Ca-755. We used C57Bl / 6 mice, which were subcutaneously injected with a suspension of Ca-755 tumor cells into the right axillary region in the amount of 1×106 cells in 199 solution. AX-554 was administered intragastrically through a tube once on the 48 hours after tumor transplantation, in comparison with reference antitumor drugs with proven antitumor activity, which were used as doxorubicin, paclitaxel. The antitumor activity was judged by the survival rate of animals, the size and morphology of the tumor node. It was shown that the 4-aminochromene derivative AX-554 increases the survival rate of animals with breast cancer by 30% compared with the control group and by 10% with the group receiving doxorubicin. with control. In the study of tumor sections stained with hemotoxylin and eosin in animals treated with AX-554, there were single tumor cells in a state of severe dystrophy, the necrosis zone was 90%, which indicates drug pathomorphosis of the 3rd degree. In animals treated with doxorubicin, atypical cells in the center of the tumor node retained their structure, in the periphery - cells in a state of dystrophy, foci of necrosis accounted for 60%. The morphological picture of the tumor in animals treated with paclitaxel was a drug pathomorphosis of the 2nd degree.

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