title: Stereospecific analysis of phospholipid classes in skeletal muscle from rats fed different fat sources.
abstract: The fatty acid (FA) and dimethylacetal profiles of the sn-1 and sn-2 positions of different phospholipid (PL) classes from skeletal muscle of rats as affected by dietary FA profiles were studied. Rats were fed either a control diet, an olive oil-enriched diet, or a sunflower oil-enriched diet. The FA composition of both positions of the studied PL classes was affected by diet to different extents. The FA composition of the sn-2 position of phosphatidylserine was the most influenced by diet, while phosphatidylinositol was less affected by dietary modification. The FA profile of phosphatidylcholine reflected consumed FA better than any other studied PL. Thus, olive oil rats showed higher oleic acid (C18:1 n-9) contents in both positions of phosphatidylcholine, and sunflower oil rats had higher proportions of arachidonic acid (C20:4 n-6) in the sn-1 position of this PL class. Dimethylacetals were scarcely affected by diet, and only the dimethylacetal composition of phosphatidylethanolamine showed significant modifications.
authors.affiliation: Food Science, School of Veterinary Sciences, University of Extremadura, 10071 Caceres, Spain. triny@unex.es
authors.forename: Trinidad
authors.initials: T
authors.lastname: Pérez-Palacios
authors.forename: Teresa
authors.initials: T
authors.lastname: Antequera
authors.forename: Elena
authors.initials: E
authors.lastname: Muriel
authors.forename: Diana
authors.initials: D
authors.lastname: Martín
authors.forename: Jorge
authors.initials: J
authors.lastname: Ruiz
mesh_terms: D000080:Acetals / Q000032:analysis; D000818:Animals; D004041:Dietary Fats / Q000008:administration & dosage*; D005227:Fatty Acids / Q000032:analysis; D018482:Muscle, Skeletal / Q000737:chemistry*; D010743:Phospholipids / Q000737:chemistry*; D051381:Rats
chemical_list: D000080:Acetals; D004041:Dietary Fats; D005227:Fatty Acids; D010743:Phospholipids