| Autor: | Keiko Tadano-Aritomi, Naoko Iida-Tanaka, Ineo Ishizuka, Toshiyuki Hikita, Sen-itiroh Hakomori, Steven B. Levery |
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| Rok vydání: | 2002 |
| Předmět: |
Sphingosine
Chemistry Cationic polymerization General Medicine Biochemistry Cellular phenotype carbohydrates (lipids) Cellular and Molecular Neuroscience Lactosylsphingosine chemistry.chemical_compound Biological significance Distribution pattern Psychosine lipids (amino acids peptides and proteins) Signal transduction |
| Zdroj: | Neurochemical Research. 27:575-581 |
| ISSN: | 0364-3190 |
| DOI: | 10.1023/a:1020259630034 |
| Popis: | During the course of studies on natural occurrence of sphingosine base in brain, cationic glycosphingolipids bound to carboxymethyl-Sephadex and eluted with triethylamine in organic solvents were isolated and characterized. Four classes of compounds were identified: (i) plasmalopsychosine-A and -B; (ii) glyceroplasmalopsychosine; (iii) glycosphingolipids having de-N-acetyl-hexosamine, e.g., de-N-acetyl-Lc3Cer; (iv) glycosylsphingosine, i.e., lysoglycosphingolipid. Only two kinds, galactosylsphingosine (psychosine) and lactosylsphingosine, were found to occur naturally in brain. All these compounds were isolated from extract of brain white matter. Their occurrence, quantity, and distribution pattern differ from one species to another. Their quantity is much lower than that of regular acidic and neutral glycosphingolipids. They may interact with regular glycosphingolipids in glycosphingolipid-enriched microdomains to elicit signal transduction, to modify cellular phenotype, although studies along this line are highly limited at this time. |
| Databáze: | OpenAIRE |
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