Biomaterial Database

Effects of temporary selenium supplementation on the genesis of spontaneous mammary tumors in inbred female C3H/St mice. 1980

G N Schrauzer, and J E McGinness, and K Kuehn

Department of Chemistry, University of California at San Diego, Revelle College, La Jolla, CA 92093, USA.

Female inbred C3H/St mice infected with the Bittner Milk Particle, develop mammary adenocarcinoma with 27% incidence if maintained on a Torula Yeast diet supplemented with 1 ppm of selenium (organically bound, in yeast). Animals switched from the 1 ppm Se diet to a diet containing only 0.15 ppm Se after reaching the age of 13.8 months develop mammary tumors rapidly during their remaining lifespan, the overall tumor incidence reaches 69%, not statistically different from the 77% incidence of tumors observed in animals maintained on the 0.15 ppm Se diet over their entire post-weaning life span. Conversely, animals changed from the 0.15 ppm Se diet to that containing 1.0 ppm Se at the age of 13.8 months develop mammary tumors with a total incidence of only 46%, significantly lower (P < 0.05) than in the 0.15 ppm Se control group. This study demonstrates that dietary selenium prevents and retards tumor development only as long as it is supplied in adequate amounts, consistent with its role as a non-accumulative trace nutrient.

UI	MeSH Term	Description	Entries
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
D008809	Mice, Inbred C3H	An inbred strain of mouse that is used as a general purpose strain in a wide variety of RESEARCH areas including CANCER; INFECTIOUS DISEASES; sensorineural, and cardiovascular biology research.	Mice, C3H,Mouse, C3H,Mouse, Inbred C3H,C3H Mice,C3H Mice, Inbred,C3H Mouse,C3H Mouse, Inbred,Inbred C3H Mice,Inbred C3H Mouse
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
D012643	Selenium	An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.	Selenium-80,Selenium 80
D051379	Mice	The common name for the genus Mus.	Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D019587	Dietary Supplements	Products in capsule, tablet or liquid form that provide dietary ingredients, and that are intended to be taken by mouth to increase the intake of nutrients. Dietary supplements can include macronutrients, such as proteins, carbohydrates, and fats; and/or MICRONUTRIENTS, such as VITAMINS; MINERALS; and PHYTOCHEMICALS.	Food Supplements,Neutraceuticals,Dietary Supplementations,Food Supplementations,Herbal Supplements,Nutraceuticals,Nutriceuticals,Dietary Supplement,Food Supplement,Herbal Supplement,Neutraceutical,Nutraceutical,Nutriceutical,Supplement, Food,Supplement, Herbal,Supplementations, Dietary,Supplements, Dietary,Supplements, Food,Supplements, Herbal