RESUMEN
BACKGROUND/AIM: Numerous studies have demonstrated an anti-cancer action of plant-derived polyphenols. Their action is mainly related to antioxidant, anti-inflammatory, immunomodulatory and inhibitory properties. It is expected that proper composition of nutrition factors with anti-cancer activity may prevent from cancer incidence or inhibit cancer progression. The aim of the study was to investigate the anti-cancer properties of a standardized composition of compounds: trans-resveratrol, quercetin, vitamin E and selenium (Neoplasmoxan, Vebiot) in a mouse model of CT26 colorectal carcinoma. MATERIALS AND METHODS: Colorectal carcinoma cells (CT26) were introduced subcutaneously (2×105/mouse) on the back of the mice. Neoplasmoxan suspension was administered intragastrically, daily, for 21 consecutive days. In collected tumors, the area occupied by tumor blood vessels and the number of immune cells; macrophages and CD8-positive cytotoxic T lymphocytes were evaluated. RESULTS: It was observed that administration of Neoplasmoxan inhibits the growth of colorectal carcinoma in mice. Tumor volume after Neoplasmoxan administration was 40% smaller than in control groups. No overall toxicity of Neoplasmoxan was observed. The area of blood vessels in tumors of mice that received Neoplasmoxan was reduced by approximately 20%. The area occupied by macrophages increased about 60% compared to the control group. However, no increased number of CD8-positive cytotoxic T lymphocytes was observed in the group that received Neoplasmoxan. CONCLUSION: A tendency of Neoplasmoxan to inhibit the growth of colorectal carcinoma was recorded. It also seems that additional combination of the tested preparation with standard chemotherapy or radiotherapy should bring a synergistic therapeutic effect.