Chemopreventive potential of cranberries on azoxymethane induced aberrant crypt foci in Fisher 344 male rats
In this study, the chemopreventive potential of Cranberry was analyzed in reducing the Aberrant Crypt Foci (ACF) induced by Azoxymethane (AOM) in Fisher 344 male rats. After 1 week period of acclimatization, rats were divided into five different groups. Cranberry meal was mixed in an AIN 93G based diet at 5 and 10% and juice was provided at 2.5 and 5%. Daily feed intake and weekly body weights were recorded. At 17 week of age, rats were killed and samples were collected. Number of ACF and number of crypts/foci were enumerated in the colon. There were no significant differences in feed intake, weight gain, cecal weight and cecal pH among all groups. Total ACF incidence (119) was significantly (p<0.05) higher in control group than in treatment groups. Reduction in total ACF induction was higher in rats fed 10% Cranberry (65.75%) compared to control. A two to six fold increase in selected hepatic enzymes activities (units/mg enzyme) were seen in rats fed 5 and 10% treatment diets compared to control. Results of this study showed that administration of Cranberry meal and juice resulted in significant (p<0.05) reductions in the incidence of ACF in azoxymethane induced preneoplastic lesions.