Biomaterial Database

[Age-related changes in adenylate cyclase activity, lipid composition and lipid peroxidation in rat intestinal mucosa: comparison with the frequency of spontaneous tumors]. 1985

L M Bershteĭn, and I G Kovaleva

The study used 3, 7, 16 and 22 month-old male rats bred at the animal farm of the Institute. Identical age-related changes were established in the level of free cholesterol, its esters, free cholesterol/phospholipids and sphingomyelin/lecithin ratios in ascending and descending colon mucosa. Unlike descending colon mucosa, the basal and hormone-stimulating activity of adenylate cyclase and rate of lipid peroxidation in the mucosa of the ascending colon of 22 month-old animals were lower than in 16 month-old rats. The results are compared with the available data on the predominant localization of spontaneous tumors in the proximal (ascending) part of rat's intestine.

UI	MeSH Term	Description	Entries
D007413	Intestinal Mucosa	Lining of the INTESTINES, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. In the SMALL INTESTINE, the mucosa is characterized by a series of folds and abundance of absorptive cells (ENTEROCYTES) with MICROVILLI.	Intestinal Epithelium,Intestinal Glands,Epithelium, Intestinal,Gland, Intestinal,Glands, Intestinal,Intestinal Gland,Mucosa, Intestinal
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
D008054	Lipid Peroxides	Peroxides produced in the presence of a free radical by the oxidation of unsaturated fatty acids in the cell in the presence of molecular oxygen. The formation of lipid peroxides results in the destruction of the original lipid leading to the loss of integrity of the membranes. They therefore cause a variety of toxic effects in vivo and their formation is considered a pathological process in biological systems. Their formation can be inhibited by antioxidants, such as vitamin E, structural separation or low oxygen tension.	Fatty Acid Hydroperoxide,Lipid Peroxide,Lipoperoxide,Fatty Acid Hydroperoxides,Lipid Hydroperoxide,Lipoperoxides,Acid Hydroperoxide, Fatty,Acid Hydroperoxides, Fatty,Hydroperoxide, Fatty Acid,Hydroperoxide, Lipid,Hydroperoxides, Fatty Acid,Peroxide, Lipid,Peroxides, Lipid
D008297	Male		Males
D000262	Adenylyl Cyclases	Enzymes of the lyase class that catalyze the formation of CYCLIC AMP and pyrophosphate from ATP.	Adenyl Cyclase,Adenylate Cyclase,3',5'-cyclic AMP Synthetase,Adenylyl Cyclase,3',5' cyclic AMP Synthetase,AMP Synthetase, 3',5'-cyclic,Cyclase, Adenyl,Cyclase, Adenylate,Cyclase, Adenylyl,Cyclases, Adenylyl,Synthetase, 3',5'-cyclic AMP
D000375	Aging	The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.	Senescence,Aging, Biological,Biological Aging
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
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus