Abstract
High fat diets promote the development of mammary tumors induced in rats by 7,12-dimethylbenz(a)anthracene (DMBA), and polyunsaturated fats are more effective than saturated fats. This difference is related to the linoleic acid content of polyunsaturated vegetable oils, but the amount of linolealte required for maximum tumor promotion appears to be higher than indicated by earlier experiments. Comparison of the effects of a polyunsaturated vegetable oil (corn oil) containing linoleate with a fish oilo (menhaden oil) containing polyunsaturated fatty acids derived from linolenic acid showed that higher dietary mammary tumors, while corresponding levels of menhaden oil had an inhibitory effect. This is further evidence that promotion of mammary tumorigenesis by polyunsaturated vegetable oils may be mediated by prostaglandins or other biologically active eicosanoids derived from n−6 fatty acids.
Similar content being viewed by others
References
Gammal, E.B., Carroll, K.K., and Plunkett, E.R. (1967)Cancer Res. 27, 1737–1742.
Carroll, K.K., and Khor, H.T. (1971)Lipids 6, 415–420.
Hopkins, G.J., and Carroll, K.K. (1979)JNCI 62, 1009–1012.
Hopkins, G.J., Kennedy, T.G., and Carroll, K.K. (1981)JNCI 66, 517–522.
Rao, G.A., and Abraham, S. (1977)J. Natl. Cancer Inst. 58, 445–447.
Hillyard, L.A., and Abraham, S. (1979)Cancer Res. 39, 4430–4437.
Carter, C.A., Milholland, R.J., Shea, W., and Ip, M.M. (1983)Cancer Res. 43, 3559–3562.
Kollmorgen, G.M., King, M.M., Kosanke, S.D., and Do, C. (1983)Cancer Res. 43, 4714–4719.
Oliw, E., Granström, E., and Änggård, E. (1983) inNew Comprehensive Biochemistry, Vol. 5. Prostaglandins and Related Substances (Pace-Asciak, C., and Granström, E., eds.) pp. 1–44, Elsevier, Amsterdam.
Kalamegham, R., and Carroll, K.K. (1984)Nutr. Cancer 6, 22–31.
Tinsley, I.J., Schmitz, J.A., and Pierce, D.A. (1981)Cancer Res. 41, 1460–1465.
Chan, P-C., Ferguson, K.A., and Dao, T.L. (1983)Cancer Res. 43, 1079–1083.
McCay, P.B., King, M.M., and Pitha, J.V. (1981)Cancer Res. 41, 3745–3748.
Ip, C., Carter, C.A., andIp, M.M. (1985)Cancer Res. 45, 1997–2001.
Jurkowski, J.J., and Cave, W.T. Jr. (1984)Proc. Am. Assoc. Cancer Res. 25, 210.
Karmali, R.A., Marsh, J., and Fuchs, C. (1984)JNCI 73, 457–461.
Gabor, H., and Abraham, S. (1985)Proc. Am. Assoc. Cancer Res. 26, 126.
O'Connor, T.P., Roebuck, B.D., Peterson, F., and Campbell, T.C. (1985)Fed. Proc. 44, 769.
Flower, R.J. (1979) inOxygen Free Radicals and Tissue Damage, Ciba Foundation Symposium 65, pp. 121–138, Excerpta Medica, Amsterdam.
Bird, R.P., Draper, H.H. and Valli, V.E.O. (1982)J. Toxicol. Environ. Health 10, 897–905.
Author information
Authors and Affiliations
About this article
Cite this article
Braden, L.M., Carroll, K.K. Dietary polyunsaturated fat in relation to mammary carcinogenesis in rats. Lipids 21, 285–288 (1986). https://doi.org/10.1007/BF02536414
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02536414