Effects of different levels of dietary fat on methyl-nitrosourea-induced mammary carcinogenesis in correlation with parameters of fat metabolism in female Sprague-Dawley rats. 1990

M Aksoy, and M Beth, and M R Berger, and D Schmähl
University of Ankara, Nutritional Department, Turkey.

The aim of this study was to elucidate the effects of different levels of dietary fat on methyl-nitrosourea-induced rat mammary carcinogenesis in correlation with parameters of the fat metabolism. 90 female Sprague-Dawley rats were initiated i.v. with 25 mg MNU/kg on day 50 of life. For a period of 6 months, beginning after the day of initiation, the animals received either a control diet (12% of total energy as fat, Group I) or one of the fat-enriched semisynthetic diets (25 en% of fat, Group II, or 45 en%, Group III, respectively) at an isocaloric level of 50 kcal/rat/day. The principal observations of this experiment were: (1) The fat content of diet did not significantly influence mammary carcinogenesis. (2) The values of plasma total lipids, cholesterol and triglycerides and their density separated VLDL and LDL-fractions showed a significant time-dependent increase. (3) HDL-values of cholesterol and triglycerides showed no changes in dependence to time and fat content of the diet. (4) The liver lipid concentrations of groups increased significantly with dietary fat content.

UI MeSH Term Description Entries
D008055 Lipids A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed) Lipid
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008325 Mammary Neoplasms, Experimental Experimentally induced mammary neoplasms in animals to provide a model for studying human BREAST NEOPLASMS. Experimental Mammary Neoplasms,Neoplasms, Experimental Mammary,Experimental Mammary Neoplasm,Mammary Neoplasm, Experimental,Neoplasm, Experimental Mammary
D008770 Methylnitrosourea A nitrosourea compound with alkylating, carcinogenic, and mutagenic properties. Nitrosomethylurea,N-Methyl-N-nitrosourea,NSC-23909,N Methyl N nitrosourea,NSC 23909,NSC23909
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002784 Cholesterol The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. Epicholesterol
D004041 Dietary Fats Fats present in food, especially in animal products such as meat, meat products, butter, ghee. They are present in lower amounts in nuts, seeds, and avocados. Fats, Dietary,Dietary Fat,Fat, Dietary
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D050356 Lipid Metabolism Physiological processes in biosynthesis (anabolism) and degradation (catabolism) of LIPIDS. Metabolism, Lipid

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