Occurrence of N-acylethanolamine phospholipids in fish brain and spinal cord.
N-Acylethanolamine phospholipids were identified in the central nervous system of the fresh water fish, pike (Esox lucius) and carp (Cyprinus carpio), at levels ranging from 0.1 to 0.9% of total phospholipid. The N-acylethanolamine phospholipids of carp brain were isolated and characterized by chemical, biochemical and spectroscopic methods. Two major species, 1,2-diacyl-sn-glycero-3-phospho(N-acyl)ethanolamines (approx. 30%) and 1-O-(1'-alkenyl)-2-acyl-sn-glycero-3-phospho(N-acyl)ethanolamines (approx. 70%) were identified. The N-acyl groups of each species consisted primarily of 16:0 (approx. 60%) but also contained 16:1, 18:0 and 18:1 (approx. 10% each) and a number of trace constituents. The N-acylethanolamine phospholipids had O-acyl and O-alkenyl group compositions similar but not identical to those of the ethanolamine phospholipids of the same tissue. N-Acylethanolamine phospholipids were present in all subcellular fractions of carp brain, except mitochondria.
D000818:Animals; D001921:Brain / Q000378:metabolism* / Q000648:ultrastructure; D002347:Carps / Q000378:metabolism*; D055598:Chemical Phenomena; D002621:Chemistry; D003530:Cyprinidae / Q000378:metabolism*; D004983:Ethanolamines / Q000378:metabolism*; D005227:Fatty Acids / Q000378:metabolism; D005399:Fishes / Q000378:metabolism*; D010743:Phospholipids / Q000378:metabolism*; D010955:Plasmalogens / Q000378:metabolism; D013116:Spinal Cord / Q000378:metabolism*; D013347:Subcellular Fractions / Q000378:metabolism
D004983:Ethanolamines; D005227:Fatty Acids; C022203:N-acylethanolamines; D010743:Phospholipids; D010955:Plasmalogens