| Literature DB >> 14595000 |
Benoit Colsch1, Carlos Afonso, Iuliana Popa, Jacques Portoukalian, Françoise Fournier, Jean-Claude Tabet, Nicole Baumann.
Abstract
Sphingoglycolipids (SGLs) are cell membrane constituents. As the ceramide structure influences the biological properties of the SGL, we characterized by electrospray ionization tandem mass spectrometry the molecular species of ceramides present in SGL of mouse brain. We report here for the first time the presence in mammalian brain of sphingadienine (d18:2). Sphingenine (d18:1) is present in all SGL species, in contrast to eicosasphingenine (d20:1), which is a constituent of only gangliosides. Sphingadienine is present in galactosylceramide and sulfatides. Free ceramides contain the three types of bases. Thus, there could be two separate pools of free ceramides (d18:1, d18:2 and d20:1, d18:1) as precursors of complex SGL.Entities:
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Year: 2003 PMID: 14595000 DOI: 10.1194/jlr.M300331-JLR200
Source DB: PubMed Journal: J Lipid Res ISSN: 0022-2275 Impact factor: 5.922