title: Characterization of gangliosides from equine kidney and spleen.
abstract: Gangliosides were isolated from equine kidney and spleen, and their carbohydrate and lipid moieties were characterized. Among the long-chain bases, considerable proportions of trihydroxy bases (42.3 to 61.2% of the total bases), in which phytosphingosine was predominant were found in all the ganglioside classes. The other major base was sphingosine. Among the constituent fatty acids, long-chain acids (with a carbon number of more than 20), comprised approximately half the total acids, with some alpha-hydroxy and mono-unsaturated acids. By means of sequential hydrolysis with glycosidases coupled with methylation analysis, the following kidney and spleen gangliosides were characterized: hematoside containing both N-acetyl and N-glycolylneuraminic acids; ganglioside GM2 having both types off sialic acid; ganglioside GM1 having mainly N-glycolylneuraminic acid (83 to 86%); ganglioside GD1a having mainly N-glycolylneuraminic acid (71 to 95%). Ganglioside GD3 containing almost exclusively N-glycolylneuraminic acid (93%) was found in the kidney, and ganglioside GD1b having both types of sialic acid in the spleen.
mesh_terms: D000818:Animals; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002518:Ceramides / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005732:Gangliosides / Q000032:analysis*; D006028:Glycosphingolipids / Q000032:analysis; D006736:Horses; D007668:Kidney / Q000032:analysis*; D008745:Methylation; D012794:Sialic Acids / Q000032:analysis; D013110:Sphingosine / Q000032:analysis; D013154:Spleen / Q000032:analysis*
chemical_list: D002518:Ceramides; D005227:Fatty Acids; D005732:Gangliosides; D006028:Glycosphingolipids; D012794:Sialic Acids; D013110:Sphingosine