Biomaterial Database

Protective effect of gamma-linolenic acid on aspirin-induced gastric hemorrhage in rats. 1987

Y S Huang, and R Drummond, and D F Horrobin

The effects of feeding with gamma-linolenic acid (GLA) in comparison with linoleic acid on aspirin-induced gastric hemorrhage were studied in the rat. Gastric damage was examined macroscopically and histologically. Intragastric administration of 100 mg aspirin daily for 4 weeks produced hemorrhage in 3 of 8 rats receiving a linoleic-acid-enriched diet, but none in 8 rats receiving GLA-enriched diet. The levels of linoleic acid in plasma and liver phospholipids were significantly increased, whereas those of arachidonic acid (AA) were reduced in plasma and liver phospholipids of aspirin-treated animals fed linoleic acid. Similar, more pronounced changes occurred in those animals with hemorrhage. The reduced ratios of arachidonate/linoleate suggest that fatty acid desaturation in these animals was depressed. Treatment with GLA prevented these changes. Our results demonstrated that GLA could protect the gastric mucosa from aspirin-induced damage by bypassing the depressed delta-6-desaturation and thus providing a precursor for the synthesis of AA and prostaglandins.

UI	MeSH Term	Description	Entries
D008041	Linoleic Acids	Eighteen-carbon essential fatty acids that contain two double bonds.	Acids, Linoleic
D008042	Linolenic Acids	Eighteen-carbon essential fatty acids that contain three double bonds.
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
D010743	Phospholipids	Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system.	Phosphatides,Phospholipid
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
D005227	Fatty Acids	Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)	Aliphatic Acid,Esterified Fatty Acid,Fatty Acid,Fatty Acids, Esterified,Fatty Acids, Saturated,Saturated Fatty Acid,Aliphatic Acids,Acid, Aliphatic,Acid, Esterified Fatty,Acid, Saturated Fatty,Esterified Fatty Acids,Fatty Acid, Esterified,Fatty Acid, Saturated,Saturated Fatty Acids
D005260	Female		Females
D005753	Gastric Mucosa	Lining of the STOMACH, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. The surface cells produce MUCUS that protects the stomach from attack by digestive acid and enzymes. When the epithelium invaginates into the LAMINA PROPRIA at various region of the stomach (CARDIA; GASTRIC FUNDUS; and PYLORUS), different tubular gastric glands are formed. These glands consist of cells that secrete mucus, enzymes, HYDROCHLORIC ACID, or hormones.	Cardiac Glands,Gastric Glands,Pyloric Glands,Cardiac Gland,Gastric Gland,Gastric Mucosas,Gland, Cardiac,Gland, Gastric,Gland, Pyloric,Glands, Cardiac,Glands, Gastric,Glands, Pyloric,Mucosa, Gastric,Mucosas, Gastric,Pyloric Gland
D006471	Gastrointestinal Hemorrhage	Bleeding in any segment of the GASTROINTESTINAL TRACT from ESOPHAGUS to RECTUM.	Hematochezia,Hemorrhage, Gastrointestinal,Gastrointestinal Hemorrhages,Hematochezias
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