title: Fatty acid composition of choline and ethanolamine glycerophospholipid subclasses in heart tissue of mammals and migratory and demersal fish.
abstract: The distribution and fatty acid composition of cardiac choline and ethanolamine glycerophospholipids in both migratory and demersal fish and bovine and pig were determined. Phospholipid contents (mg/g heart) were 4.7-9.4 in demersal fish, 14.0-16.5 in migratory fish, and 16.8-20.6 in mammals. Phosphatidylcholine (PC) and phosphatidylethanolamine (PE) were the major components in the phospholipid fraction. Diacyl forms represented 50.2-88.1% of PC in all animals, while plasmalogens comprised 47.0% in bovine, 8.2% in pig and 6.2-7.2% in four species of fish. In PE, plasmalogens varied from 45.0% in bovine and 57.9% in pig to 26.1-29.7% in fish. This glycerophospholipid subclass was identified as containing higher proportions of polyunsaturated fatty acids (PUFAs; 20:4, 20:5, and 22:6) than found in alkylacyl- and diacyl-glycerophospholipids. Qualitative and quantitative differences were found in PE-plasmalogen between land mammals and fish, especially with regard to n-3 fatty acid composition, but no significant difference was noted between migratory and demersal fish.
authors.affiliation: Biochemical R&D Division, Yaizu Suisankagaku Industry Co., Ltd., Shizuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kikuchi
authors.forename: K
authors.initials: K
authors.lastname: Sakai
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: K
authors.initials: K
authors.lastname: Takama
mesh_terms: D000818:Animals; D002417:Cattle; D005227:Fatty Acids / Q000032:analysis*; D005231:Fatty Acids, Unsaturated; D005399:Fishes; D008322:Mammals; D009206:Myocardium / Q000737:chemistry*; D019308:Palmitic Acid; D010713:Phosphatidylcholines / Q000737:chemistry*; D010714:Phosphatidylethanolamines / Q000737:chemistry*; D010955:Plasmalogens / Q000737:chemistry; D013229:Stearic Acids; D013552:Swine
chemical_list: D005227:Fatty Acids; D005231:Fatty Acids, Unsaturated; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010955:Plasmalogens; D013229:Stearic Acids; D019308:Palmitic Acid; C031183:stearic acid