Change of oligosaccharides of rat brain microsomes depending on dietary fatty acids and learning task
| العنوان: | Change of oligosaccharides of rat brain microsomes depending on dietary fatty acids and learning task |
|---|---|
| المؤلفون: | Mari Miyazaki, Shiro Watanabe, Kumiko Sakai, Harumi Okuyama, Atsushi Ikemoto, Qin-Zen Zhang, Kazuhiro Ikenaka, Ichiro Fujimoto, Satoshi Yoshida |
| المصدر: | Journal of Neuroscience Research. 63:185-195 |
| بيانات النشر: | Wiley, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Glycan, Sialoglycoproteins, Oligosaccharides, Mannose, Membrane Potentials, Receptors, Concanavalin A, Cellular and Molecular Neuroscience, chemistry.chemical_compound, Microsomes, Fatty Acids, Omega-3, Animals, Learning, Phosphorylation, Chromatography, High Pressure Liquid, Glycoproteins, Food, Formulated, chemistry.chemical_classification, biology, Learning Disabilities, Brain, Oligosaccharide, Perilla oil, Rats, chemistry, Biochemistry, Concanavalin A, Sialic Acids, biology.protein, Microsome, Neural cell adhesion molecule, Glycoprotein |
| الوصف: | We have analyzed oligosaccharide chains in brain microsomes of rats fed an n-3 polyunsaturated fatty acid-deficient (safflower oil group; S group) or -rich (perilla oil group; P group) diet before and after brightness-discrimination learning tasks. The amount of concanavalin A-binding sites (mainly mannoside) of the brain microsomes was found to be significantly less in the S group than the P group before the learning task. Detailed analysis of glycoprotein glycans demonstrated that high mannose type oligosaccharides were dominant in brain microsomes before the learning task in both dietary groups, whereas multiantennary complex-type oligosaccharides became dominant after the learning task and especially a tetra-antennary glycan, that had a core structure of the glycan of neural cell adhesion molecule, was more increased in the S-group than the P group. When polysialylated glycans were analyzed on serotonin-conjugated HPLC column, the glycans in the S-group microsomes before the learning task contained larger amount of higher affinity-polysialylated glycans to serotonin column than those in the P-group, and also contained larger amount of phosphoglycans that showed also high affinity to serotonin column than the P-group. Removal of mannoside from microsomes by alpha-mannosidase-treatment changed the membrane surface physical property, especially permittivity, as revealed by analysis of the interaction with 1-anilinonaphthalene-8-sulfonate. These results suggest that high mannose content and several multiantennary glycans including polysialylated and phospho-glycans were changed by dietary n-3 fatty acid deficiency and learning task in rat brain microsomal glycoproteins and that these changes may affect membrane functions through changes of membrane surface physical properties and reactivity against serotonin. |
| تدمد: | 1097-4547 0360-4012 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdc79c9084a04fd97f263960400bfed4 https://doi.org/10.1002/1097-4547(20010115)63:2<185::aid-jnr1010>3.0.co;2-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....bdc79c9084a04fd97f263960400bfed4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10974547 03604012 |
|---|