Biomaterial Database

[Effect of age on induction of intestinal tumors in mice by 1,2-dimethylhydrazine]. 1981

V S Turusov, and N S Lanko, and Iu D Parfenov

1,2-Dimethylhydrazine was administered subcutaneously in a dose of 8 mg/kg bw to 2-, 8- and 12-month-old female CBA mice for 25 weeks. The animals were serially killed 26-35 weeks after the beginning of treatment. The incidence of colon tumors in 2-month-old mice was always significantly lower (P less than 0.001) than in 8- or 12-month-old mice. The incidence of tumors with invasive growth in 12-month-old mice was significantly higher (P less than 0.05) than in 8-month-old mice. Mathematical evaluation allowed the conclusion about the 1.8-fold shortening of the colon tumor latency period in old mice as compared to the young mice.

UI	MeSH Term	Description	Entries
D007414	Intestinal Neoplasms	Tumors or cancer of the INTESTINES.	Cancer of Intestines,Intestinal Cancer,Cancer of the Intestines,Intestines Cancer,Intestines Neoplasms,Neoplasms, Intestinal,Cancer, Intestinal,Cancer, Intestines,Cancers, Intestinal,Cancers, Intestines,Intestinal Cancers,Intestinal Neoplasm,Intestines Cancers,Intestines Neoplasm,Neoplasm, Intestinal,Neoplasm, Intestines,Neoplasms, Intestines
D007420	Intestine, Large	A segment of the LOWER GASTROINTESTINAL TRACT that includes the CECUM; the COLON; and the RECTUM.	Large Intestine
D008763	Methylhydrazines	Hydrazines substituted by one or more methyl groups in any position.
D008808	Mice, Inbred CBA	An inbred strain of mouse that is widely used in BIOMEDICAL RESEARCH.	Mice, CBA,Mouse, CBA,Mouse, Inbred CBA,CBA Mice,CBA Mice, Inbred,CBA Mouse,CBA Mouse, Inbred,Inbred CBA Mice,Inbred CBA Mouse
D009374	Neoplasms, Experimental	Experimentally induced new abnormal growth of TISSUES in animals to provide models for studying human neoplasms.	Experimental Neoplasms,Experimental Neoplasm,Neoplasm, Experimental
D002273	Carcinogens	Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.	Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D004127	Dimethylhydrazines	Hydrazines substituted with two methyl groups in any position.	Dimethylhydrazine
D000367	Age Factors	Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.	Age Reporting,Age Factor,Factor, Age,Factors, Age
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
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor