UNLABELLED: Intake of trans fatty acids from hydrogenated fish oils has been related to increased risk of coronary heart diseases. The possible effect on colorectal carcinogenesis is unclear. MATERIALS AND METHODS: Multiple intestinal neoplasia (Min/+) mice were fed one of four experimental diets: either raw fish oil (FO), low (LHFO)-, high (HHFO)- or fully-hydrogenated fish oil (FFHO), from 0 to 9 weeks of age. The number and size of intestinal tumors were recorded. RESULTS: There was no difference between the intervention groups in the numbers of developed intestinal tumors. The tumor size was statistically significantly lower in HHFO vs. the FO-group in male Min/+ mice. The HHFO and FHFO groups had lower weight gain than did the FO group (p=0.008 and p=0.04, respectively), but gender differences, due to effect of dietary intervention on weight gain, were found in Min/+ mice. CONCLUSION: When compared with raw fish oil, different degrees of hydrogenation of the fish oil had no effect on intestinal carcinogenesis in Min/+ mice.
UNLABELLED: Intake of trans fatty acids from hydrogenated fish oils has been related to increased risk of coronary heart diseases. The possible effect on colorectal carcinogenesis is unclear. MATERIALS AND METHODS:Multiple intestinal neoplasia (Min/+) mice were fed one of four experimental diets: either raw fish oil (FO), low (LHFO)-, high (HHFO)- or fully-hydrogenated fish oil (FFHO), from 0 to 9 weeks of age. The number and size of intestinal tumors were recorded. RESULTS: There was no difference between the intervention groups in the numbers of developed intestinal tumors. The tumor size was statistically significantly lower in HHFO vs. the FO-group in male Min/+ mice. The HHFO and FHFO groups had lower weight gain than did the FO group (p=0.008 and p=0.04, respectively), but gender differences, due to effect of dietary intervention on weight gain, were found in Min/+ mice. CONCLUSION: When compared with raw fish oil, different degrees of hydrogenation of the fish oil had no effect on intestinal carcinogenesis in Min/+ mice.