Suppression of large intestinal cancer in F344 rats by inositol hexaphosphate

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Abstract
Epidemiological data demonstrate correlations between dietary factors and the incidence of large intestinal cancer (LIC). Certain high-fiber diets are associated with a lower risk of LIC; these high-fiber diets are also rich in inositol hexaphosphate (IP6 or phytic acid). In a pilot study, we have used F344 rats to investigate the effect of sodium inositol hexaphosphate (Na-IP6) prior to (experiment I) and following injections of the carcinogen azoxymethane (AOM) (experiment II). In experiment I, rats started on 1% Na-IP6 in drinking water 1 week prior to the carcinogen treatment showed a 34.7% decrease (P6 supplementation was started 2 weeks following the last dose of the carcinogen. Comparison of the incidence of mitosis in the colonic crypts of the animals in different groups show that animals on AOM+IP6 demonstrate a significantly lower (P6. Further studies to expand this pilot data and to understand the mechanism of IP6 mediated LIC suppression are needed for it may have significance in our strategies for LIC control.

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