title: Structural characterization of non-acid glycosphingolipids in kidneys of single blood group O and A pigs.
abstract: Total non-acid glycosphingolipids were isolated from the kidneys of single pigs serologically typed on their red blood cells as blood groups O and A. Glycolipid species were purified by HPLC and structurally characterized by thin-layer chromatography, mass spectrometry, proton NMR spectroscopy, degradation analysis, and reactivity with various monoclonal antibodies, Gal alpha 1-4Gal-specific E. coli bacteria, and lectins. Glucosyl-, globotriaosyl-, and globotetraosylceramides were the predominant molecular species with lactosyl- and globopentaosylceramides (IV3GalGb4Cer) as abundant constituents too. Small amounts of galactosyl- and digalactosylceramides were also present. In the blood group O pig kidneys, blood group H antigens based on four different core saccharides (types 1, 2, 4, and lactosyl core) were identified and the major blood group structure was V2FucIV3Gal-Gb4Cer. In the kidneys from the blood group A pig the corresponding blood group A antigens were found and in addition, a type 3 chain blood group A antigen was indicated by mass spectrometry and by its reactivity with a monoclonal antibody. Trace amounts of the type 2 chain-based X and Y antigens were found while blood group B antigens and the type 1 chain based Lewis antigens could not be detected. The ceramide part of the glycolipids was mainly composed of dihydroxy 18:0 long chain bases and non-hydroxy 16:0-24:0 fatty cids.
authors.affiliation: Department of Medical Biochemistry, University of Göteborg, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Holgersson
authors.forename: P A
authors.initials: PA
authors.lastname: Jovall
authors.forename: B E
authors.initials: BE
authors.lastname: Samuelsson
authors.forename: M E
authors.initials: ME
authors.lastname: Breimer
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D000818:Animals; D001803:Blood Transfusion; D002240:Carbohydrate Sequence; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D006028:Glycosphingolipids / Q000737:chemistry* / Q000276:immunology; D007668:Kidney / Q000737:chemistry* / Q000276:immunology; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008954:Models, Biological; D008969:Molecular Sequence Data; D013552:Swine
chemical_list: D000017:ABO Blood-Group System; D006028:Glycosphingolipids